diff options
Diffstat (limited to 'arch/powerpc/sysdev')
46 files changed, 2726 insertions, 1900 deletions
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index cf736ca0cf05..5e37b4717864 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -17,11 +17,11 @@ obj-$(CONFIG_FSL_SOC) += fsl_soc.o obj-$(CONFIG_FSL_PCI) += fsl_pci.o $(fsl-msi-obj-y) obj-$(CONFIG_FSL_PMC) += fsl_pmc.o obj-$(CONFIG_FSL_LBC) += fsl_lbc.o +obj-$(CONFIG_FSL_IFC) += fsl_ifc.o obj-$(CONFIG_FSL_GTM) += fsl_gtm.o -obj-$(CONFIG_MPC8xxx_GPIO) += mpc8xxx_gpio.o obj-$(CONFIG_FSL_85XX_CACHE_SRAM) += fsl_85xx_l2ctlr.o fsl_85xx_cache_sram.o obj-$(CONFIG_SIMPLE_GPIO) += simple_gpio.o -obj-$(CONFIG_FSL_RIO) += fsl_rio.o +obj-$(CONFIG_FSL_RIO) += fsl_rio.o fsl_rmu.o obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o obj-$(CONFIG_QUICC_ENGINE) += qe_lib/ obj-$(CONFIG_PPC_BESTCOMM) += bestcomm/ diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index 265f0f09395a..1c16141c031c 100644 --- a/arch/powerpc/sysdev/axonram.c +++ b/arch/powerpc/sysdev/axonram.c @@ -25,7 +25,6 @@ #include <linux/bio.h> #include <linux/blkdev.h> -#include <linux/buffer_head.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/fs.h> @@ -104,7 +103,7 @@ axon_ram_irq_handler(int irq, void *dev) * axon_ram_make_request - make_request() method for block device * @queue, @bio: see blk_queue_make_request() */ -static int +static void axon_ram_make_request(struct request_queue *queue, struct bio *bio) { struct axon_ram_bank *bank = bio->bi_bdev->bd_disk->private_data; @@ -113,7 +112,6 @@ axon_ram_make_request(struct request_queue *queue, struct bio *bio) struct bio_vec *vec; unsigned int transfered; unsigned short idx; - int rc = 0; phys_mem = bank->io_addr + (bio->bi_sector << AXON_RAM_SECTOR_SHIFT); phys_end = bank->io_addr + bank->size; @@ -121,8 +119,7 @@ axon_ram_make_request(struct request_queue *queue, struct bio *bio) bio_for_each_segment(vec, bio, idx) { if (unlikely(phys_mem + vec->bv_len > phys_end)) { bio_io_error(bio); - rc = -ERANGE; - break; + return; } user_mem = page_address(vec->bv_page) + vec->bv_offset; @@ -135,8 +132,6 @@ axon_ram_make_request(struct request_queue *queue, struct bio *bio) transfered += vec->bv_len; } bio_endio(bio, 0); - - return rc; } /** diff --git a/arch/powerpc/sysdev/bestcomm/sram.c b/arch/powerpc/sysdev/bestcomm/sram.c index 1225012a681a..b6db23e085fb 100644 --- a/arch/powerpc/sysdev/bestcomm/sram.c +++ b/arch/powerpc/sysdev/bestcomm/sram.c @@ -13,7 +13,7 @@ #include <linux/err.h> #include <linux/kernel.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/string.h> diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c index d55d0ad0deab..bf6c7cc0a6af 100644 --- a/arch/powerpc/sysdev/cpm_common.c +++ b/arch/powerpc/sysdev/cpm_common.c @@ -3,7 +3,7 @@ * * Author: Scott Wood <scottwood@freescale.com> * - * Copyright 2007 Freescale Semiconductor, Inc. + * Copyright 2007-2008,2010 Freescale Semiconductor, Inc. * * Some parts derived from commproc.c/cpm2_common.c, which is: * Copyright (c) 1997 Dan error_act (dmalek@jlc.net) @@ -20,6 +20,7 @@ #include <linux/init.h> #include <linux/of_device.h> #include <linux/spinlock.h> +#include <linux/export.h> #include <linux/of.h> #include <linux/slab.h> @@ -146,6 +147,7 @@ unsigned long cpm_muram_alloc(unsigned long size, unsigned long align) spin_lock_irqsave(&cpm_muram_lock, flags); cpm_muram_info.alignment = align; start = rh_alloc(&cpm_muram_info, size, "commproc"); + memset(cpm_muram_addr(start), 0, size); spin_unlock_irqrestore(&cpm_muram_lock, flags); return start; diff --git a/arch/powerpc/sysdev/dcr.c b/arch/powerpc/sysdev/dcr.c index bb44aa9fd470..1bd0eba4d355 100644 --- a/arch/powerpc/sysdev/dcr.c +++ b/arch/powerpc/sysdev/dcr.c @@ -20,6 +20,7 @@ #undef DEBUG #include <linux/kernel.h> +#include <linux/export.h> #include <asm/prom.h> #include <asm/dcr.h> diff --git a/arch/powerpc/sysdev/ehv_pic.c b/arch/powerpc/sysdev/ehv_pic.c index af1a5df46b3e..b6731e4a6646 100644 --- a/arch/powerpc/sysdev/ehv_pic.c +++ b/arch/powerpc/sysdev/ehv_pic.c @@ -280,6 +280,7 @@ void __init ehv_pic_init(void) if (!ehv_pic->irqhost) { of_node_put(np); + kfree(ehv_pic); return; } diff --git a/arch/powerpc/sysdev/fsl_gtm.c b/arch/powerpc/sysdev/fsl_gtm.c index 7dd2885321ad..02cf1e7e77fc 100644 --- a/arch/powerpc/sysdev/fsl_gtm.c +++ b/arch/powerpc/sysdev/fsl_gtm.c @@ -22,6 +22,7 @@ #include <linux/spinlock.h> #include <linux/bitops.h> #include <linux/slab.h> +#include <linux/export.h> #include <asm/fsl_gtm.h> #define GTCFR_STP(x) ((x) & 1 ? 1 << 5 : 1 << 1) diff --git a/arch/powerpc/sysdev/fsl_ifc.c b/arch/powerpc/sysdev/fsl_ifc.c new file mode 100644 index 000000000000..b31f19f61031 --- /dev/null +++ b/arch/powerpc/sysdev/fsl_ifc.c @@ -0,0 +1,310 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc + * + * Freescale Integrated Flash Controller + * + * Author: Dipen Dudhat <Dipen.Dudhat@freescale.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/compiler.h> +#include <linux/spinlock.h> +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <asm/prom.h> +#include <asm/fsl_ifc.h> + +struct fsl_ifc_ctrl *fsl_ifc_ctrl_dev; +EXPORT_SYMBOL(fsl_ifc_ctrl_dev); + +/* + * convert_ifc_address - convert the base address + * @addr_base: base address of the memory bank + */ +unsigned int convert_ifc_address(phys_addr_t addr_base) +{ + return addr_base & CSPR_BA; +} +EXPORT_SYMBOL(convert_ifc_address); + +/* + * fsl_ifc_find - find IFC bank + * @addr_base: base address of the memory bank + * + * This function walks IFC banks comparing "Base address" field of the CSPR + * registers with the supplied addr_base argument. When bases match this + * function returns bank number (starting with 0), otherwise it returns + * appropriate errno value. + */ +int fsl_ifc_find(phys_addr_t addr_base) +{ + int i = 0; + + if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->regs) + return -ENODEV; + + for (i = 0; i < ARRAY_SIZE(fsl_ifc_ctrl_dev->regs->cspr_cs); i++) { + __be32 cspr = in_be32(&fsl_ifc_ctrl_dev->regs->cspr_cs[i].cspr); + if (cspr & CSPR_V && (cspr & CSPR_BA) == + convert_ifc_address(addr_base)) + return i; + } + + return -ENOENT; +} +EXPORT_SYMBOL(fsl_ifc_find); + +static int __devinit fsl_ifc_ctrl_init(struct fsl_ifc_ctrl *ctrl) +{ + struct fsl_ifc_regs __iomem *ifc = ctrl->regs; + + /* + * Clear all the common status and event registers + */ + if (in_be32(&ifc->cm_evter_stat) & IFC_CM_EVTER_STAT_CSER) + out_be32(&ifc->cm_evter_stat, IFC_CM_EVTER_STAT_CSER); + + /* enable all error and events */ + out_be32(&ifc->cm_evter_en, IFC_CM_EVTER_EN_CSEREN); + + /* enable all error and event interrupts */ + out_be32(&ifc->cm_evter_intr_en, IFC_CM_EVTER_INTR_EN_CSERIREN); + out_be32(&ifc->cm_erattr0, 0x0); + out_be32(&ifc->cm_erattr1, 0x0); + + return 0; +} + +static int fsl_ifc_ctrl_remove(struct platform_device *dev) +{ + struct fsl_ifc_ctrl *ctrl = dev_get_drvdata(&dev->dev); + + free_irq(ctrl->nand_irq, ctrl); + free_irq(ctrl->irq, ctrl); + + irq_dispose_mapping(ctrl->nand_irq); + irq_dispose_mapping(ctrl->irq); + + iounmap(ctrl->regs); + + dev_set_drvdata(&dev->dev, NULL); + kfree(ctrl); + + return 0; +} + +/* + * NAND events are split between an operational interrupt which only + * receives OPC, and an error interrupt that receives everything else, + * including non-NAND errors. Whichever interrupt gets to it first + * records the status and wakes the wait queue. + */ +static DEFINE_SPINLOCK(nand_irq_lock); + +static u32 check_nand_stat(struct fsl_ifc_ctrl *ctrl) +{ + struct fsl_ifc_regs __iomem *ifc = ctrl->regs; + unsigned long flags; + u32 stat; + + spin_lock_irqsave(&nand_irq_lock, flags); + + stat = in_be32(&ifc->ifc_nand.nand_evter_stat); + if (stat) { + out_be32(&ifc->ifc_nand.nand_evter_stat, stat); + ctrl->nand_stat = stat; + wake_up(&ctrl->nand_wait); + } + + spin_unlock_irqrestore(&nand_irq_lock, flags); + + return stat; +} + +static irqreturn_t fsl_ifc_nand_irq(int irqno, void *data) +{ + struct fsl_ifc_ctrl *ctrl = data; + + if (check_nand_stat(ctrl)) + return IRQ_HANDLED; + + return IRQ_NONE; +} + +/* + * NOTE: This interrupt is used to report ifc events of various kinds, + * such as transaction errors on the chipselects. + */ +static irqreturn_t fsl_ifc_ctrl_irq(int irqno, void *data) +{ + struct fsl_ifc_ctrl *ctrl = data; + struct fsl_ifc_regs __iomem *ifc = ctrl->regs; + u32 err_axiid, err_srcid, status, cs_err, err_addr; + irqreturn_t ret = IRQ_NONE; + + /* read for chip select error */ + cs_err = in_be32(&ifc->cm_evter_stat); + if (cs_err) { + dev_err(ctrl->dev, "transaction sent to IFC is not mapped to" + "any memory bank 0x%08X\n", cs_err); + /* clear the chip select error */ + out_be32(&ifc->cm_evter_stat, IFC_CM_EVTER_STAT_CSER); + + /* read error attribute registers print the error information */ + status = in_be32(&ifc->cm_erattr0); + err_addr = in_be32(&ifc->cm_erattr1); + + if (status & IFC_CM_ERATTR0_ERTYP_READ) + dev_err(ctrl->dev, "Read transaction error" + "CM_ERATTR0 0x%08X\n", status); + else + dev_err(ctrl->dev, "Write transaction error" + "CM_ERATTR0 0x%08X\n", status); + + err_axiid = (status & IFC_CM_ERATTR0_ERAID) >> + IFC_CM_ERATTR0_ERAID_SHIFT; + dev_err(ctrl->dev, "AXI ID of the error" + "transaction 0x%08X\n", err_axiid); + + err_srcid = (status & IFC_CM_ERATTR0_ESRCID) >> + IFC_CM_ERATTR0_ESRCID_SHIFT; + dev_err(ctrl->dev, "SRC ID of the error" + "transaction 0x%08X\n", err_srcid); + + dev_err(ctrl->dev, "Transaction Address corresponding to error" + "ERADDR 0x%08X\n", err_addr); + + ret = IRQ_HANDLED; + } + + if (check_nand_stat(ctrl)) + ret = IRQ_HANDLED; + + return ret; +} + +/* + * fsl_ifc_ctrl_probe + * + * called by device layer when it finds a device matching + * one our driver can handled. This code allocates all of + * the resources needed for the controller only. The + * resources for the NAND banks themselves are allocated + * in the chip probe function. +*/ +static int __devinit fsl_ifc_ctrl_probe(struct platform_device *dev) +{ + int ret = 0; + + + dev_info(&dev->dev, "Freescale Integrated Flash Controller\n"); + + fsl_ifc_ctrl_dev = kzalloc(sizeof(*fsl_ifc_ctrl_dev), GFP_KERNEL); + if (!fsl_ifc_ctrl_dev) + return -ENOMEM; + + dev_set_drvdata(&dev->dev, fsl_ifc_ctrl_dev); + + /* IOMAP the entire IFC region */ + fsl_ifc_ctrl_dev->regs = of_iomap(dev->dev.of_node, 0); + if (!fsl_ifc_ctrl_dev->regs) { + dev_err(&dev->dev, "failed to get memory region\n"); + ret = -ENODEV; + goto err; + } + + /* get the Controller level irq */ + fsl_ifc_ctrl_dev->irq = irq_of_parse_and_map(dev->dev.of_node, 0); + if (fsl_ifc_ctrl_dev->irq == NO_IRQ) { + dev_err(&dev->dev, "failed to get irq resource " + "for IFC\n"); + ret = -ENODEV; + goto err; + } + + /* get the nand machine irq */ + fsl_ifc_ctrl_dev->nand_irq = + irq_of_parse_and_map(dev->dev.of_node, 1); + if (fsl_ifc_ctrl_dev->nand_irq == NO_IRQ) { + dev_err(&dev->dev, "failed to get irq resource " + "for NAND Machine\n"); + ret = -ENODEV; + goto err; + } + + fsl_ifc_ctrl_dev->dev = &dev->dev; + + ret = fsl_ifc_ctrl_init(fsl_ifc_ctrl_dev); + if (ret < 0) + goto err; + + init_waitqueue_head(&fsl_ifc_ctrl_dev->nand_wait); + + ret = request_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_irq, IRQF_SHARED, + "fsl-ifc", fsl_ifc_ctrl_dev); + if (ret != 0) { + dev_err(&dev->dev, "failed to install irq (%d)\n", + fsl_ifc_ctrl_dev->irq); + goto err_irq; + } + + ret = request_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_nand_irq, 0, + "fsl-ifc-nand", fsl_ifc_ctrl_dev); + if (ret != 0) { + dev_err(&dev->dev, "failed to install irq (%d)\n", + fsl_ifc_ctrl_dev->nand_irq); + goto err_nandirq; + } + + return 0; + +err_nandirq: + free_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_ctrl_dev); + irq_dispose_mapping(fsl_ifc_ctrl_dev->nand_irq); +err_irq: + free_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_dev); + irq_dispose_mapping(fsl_ifc_ctrl_dev->irq); +err: + return ret; +} + +static const struct of_device_id fsl_ifc_match[] = { + { + .compatible = "fsl,ifc", + }, + {}, +}; + +static struct platform_driver fsl_ifc_ctrl_driver = { + .driver = { + .name = "fsl-ifc", + .of_match_table = fsl_ifc_match, + }, + .probe = fsl_ifc_ctrl_probe, + .remove = fsl_ifc_ctrl_remove, +}; + +module_platform_driver(fsl_ifc_ctrl_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Freescale Semiconductor"); +MODULE_DESCRIPTION("Freescale Integrated Flash Controller driver"); diff --git a/arch/powerpc/sysdev/fsl_lbc.c b/arch/powerpc/sysdev/fsl_lbc.c index d917573cf1a8..483126d7b3c0 100644 --- a/arch/powerpc/sysdev/fsl_lbc.c +++ b/arch/powerpc/sysdev/fsl_lbc.c @@ -15,7 +15,7 @@ */ #include <linux/init.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/kernel.h> #include <linux/compiler.h> #include <linux/spinlock.h> @@ -23,6 +23,7 @@ #include <linux/io.h> #include <linux/of.h> #include <linux/slab.h> +#include <linux/sched.h> #include <linux/platform_device.h> #include <linux/interrupt.h> #include <linux/mod_devicetable.h> @@ -327,9 +328,42 @@ static int __devinit fsl_lbc_ctrl_probe(struct platform_device *dev) err: iounmap(fsl_lbc_ctrl_dev->regs); kfree(fsl_lbc_ctrl_dev); + fsl_lbc_ctrl_dev = NULL; return ret; } +#ifdef CONFIG_SUSPEND + +/* save lbc registers */ +static int fsl_lbc_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct fsl_lbc_ctrl *ctrl = dev_get_drvdata(&pdev->dev); + struct fsl_lbc_regs __iomem *lbc = ctrl->regs; + + ctrl->saved_regs = kmalloc(sizeof(struct fsl_lbc_regs), GFP_KERNEL); + if (!ctrl->saved_regs) + return -ENOMEM; + + _memcpy_fromio(ctrl->saved_regs, lbc, sizeof(struct fsl_lbc_regs)); + return 0; +} + +/* restore lbc registers */ +static int fsl_lbc_resume(struct platform_device *pdev) +{ + struct fsl_lbc_ctrl *ctrl = dev_get_drvdata(&pdev->dev); + struct fsl_lbc_regs __iomem *lbc = ctrl->regs; + + if (ctrl->saved_regs) { + _memcpy_toio(lbc, ctrl->saved_regs, + sizeof(struct fsl_lbc_regs)); + kfree(ctrl->saved_regs); + ctrl->saved_regs = NULL; + } + return 0; +} +#endif /* CONFIG_SUSPEND */ + static const struct of_device_id fsl_lbc_match[] = { { .compatible = "fsl,elbc", }, { .compatible = "fsl,pq3-localbus", }, @@ -344,6 +378,10 @@ static struct platform_driver fsl_lbc_ctrl_driver = { .of_match_table = fsl_lbc_match, }, .probe = fsl_lbc_ctrl_probe, +#ifdef CONFIG_SUSPEND + .suspend = fsl_lbc_suspend, + .resume = fsl_lbc_resume, +#endif }; static int __init fsl_lbc_init(void) diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index 419a77239bd7..ecb5c1946d22 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -23,6 +23,8 @@ #include <asm/hw_irq.h> #include <asm/ppc-pci.h> #include <asm/mpic.h> +#include <asm/fsl_hcalls.h> + #include "fsl_msi.h" #include "fsl_pci.h" @@ -30,7 +32,7 @@ LIST_HEAD(msi_head); struct fsl_msi_feature { u32 fsl_pic_ip; - u32 msiir_offset; + u32 msiir_offset; /* Offset of MSIIR, relative to start of MSIR bank */ }; struct fsl_msi_cascade_data { @@ -126,10 +128,19 @@ static void fsl_compose_msi_msg(struct pci_dev *pdev, int hwirq, { struct fsl_msi *msi_data = fsl_msi_data; struct pci_controller *hose = pci_bus_to_host(pdev->bus); - u64 base = fsl_pci_immrbar_base(hose); + u64 address; /* Physical address of the MSIIR */ + int len; + const u64 *reg; + + /* If the msi-address-64 property exists, then use it */ + reg = of_get_property(hose->dn, "msi-address-64", &len); + if (reg && (len == sizeof(u64))) + address = be64_to_cpup(reg); + else + address = fsl_pci_immrbar_base(hose) + msi_data->msiir_offset; - msg->address_lo = msi_data->msi_addr_lo + lower_32_bits(base); - msg->address_hi = msi_data->msi_addr_hi + upper_32_bits(base); + msg->address_lo = lower_32_bits(address); + msg->address_hi = upper_32_bits(address); msg->data = hwirq; @@ -139,14 +150,49 @@ static void fsl_compose_msi_msg(struct pci_dev *pdev, int hwirq, static int fsl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) { + struct pci_controller *hose = pci_bus_to_host(pdev->bus); + struct device_node *np; + phandle phandle = 0; int rc, hwirq = -ENOMEM; unsigned int virq; struct msi_desc *entry; struct msi_msg msg; struct fsl_msi *msi_data; + /* + * If the PCI node has an fsl,msi property, then we need to use it + * to find the specific MSI. + */ + np = of_parse_phandle(hose->dn, "fsl,msi", 0); + if (np) { + if (of_device_is_compatible(np, "fsl,mpic-msi") || + of_device_is_compatible(np, "fsl,vmpic-msi")) + phandle = np->phandle; + else { + dev_err(&pdev->dev, + "node %s has an invalid fsl,msi phandle %u\n", + hose->dn->full_name, np->phandle); + return -EINVAL; + } + } + list_for_each_entry(entry, &pdev->msi_list, list) { + /* + * Loop over all the MSI devices until we find one that has an + * available interrupt. + */ list_for_each_entry(msi_data, &msi_head, list) { + /* + * If the PCI node has an fsl,msi property, then we + * restrict our search to the corresponding MSI node. + * The simplest way is to skip over MSI nodes with the + * wrong phandle. Under the Freescale hypervisor, this + * has the additional benefit of skipping over MSI + * nodes that are not mapped in the PAMU. + */ + if (phandle && (phandle != msi_data->phandle)) + continue; + hwirq = msi_bitmap_alloc_hwirqs(&msi_data->bitmap, 1); if (hwirq >= 0) break; @@ -154,16 +200,14 @@ static int fsl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) if (hwirq < 0) { rc = hwirq; - pr_debug("%s: fail allocating msi interrupt\n", - __func__); + dev_err(&pdev->dev, "could not allocate MSI interrupt\n"); goto out_free; } virq = irq_create_mapping(msi_data->irqhost, hwirq); if (virq == NO_IRQ) { - pr_debug("%s: fail mapping hwirq 0x%x\n", - __func__, hwirq); + dev_err(&pdev->dev, "fail mapping hwirq %i\n", hwirq); msi_bitmap_free_hwirqs(&msi_data->bitmap, hwirq, 1); rc = -ENOSPC; goto out_free; @@ -192,6 +236,7 @@ static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc) u32 intr_index; u32 have_shift = 0; struct fsl_msi_cascade_data *cascade_data; + unsigned int ret; cascade_data = irq_get_handler_data(irq); msi_data = cascade_data->msi_data; @@ -223,6 +268,14 @@ static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc) case FSL_PIC_IP_IPIC: msir_value = fsl_msi_read(msi_data->msi_regs, msir_index * 0x4); break; + case FSL_PIC_IP_VMPIC: + ret = fh_vmpic_get_msir(virq_to_hw(irq), &msir_value); + if (ret) { + pr_err("fsl-msi: fh_vmpic_get_msir() failed for " + "irq %u (ret=%u)\n", irq, ret); + msir_value = 0; + } + break; } while (msir_value) { @@ -240,6 +293,7 @@ static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc) switch (msi_data->feature & FSL_PIC_IP_MASK) { case FSL_PIC_IP_MPIC: + case FSL_PIC_IP_VMPIC: chip->irq_eoi(idata); break; case FSL_PIC_IP_IPIC: @@ -269,7 +323,8 @@ static int fsl_of_msi_remove(struct platform_device *ofdev) } if (msi->bitmap.bitmap) msi_bitmap_free(&msi->bitmap); - iounmap(msi->msi_regs); + if ((msi->feature & FSL_PIC_IP_MASK) != FSL_PIC_IP_VMPIC) + iounmap(msi->msi_regs); kfree(msi); return 0; @@ -296,7 +351,7 @@ static int __devinit fsl_msi_setup_hwirq(struct fsl_msi *msi, } msi->msi_virqs[irq_index] = virt_msir; - cascade_data->index = offset + irq_index; + cascade_data->index = offset; cascade_data->msi_data = msi; irq_set_handler_data(virt_msir, cascade_data); irq_set_chained_handler(virt_msir, fsl_msi_cascade); @@ -341,26 +396,37 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev) goto error_out; } - /* Get the MSI reg base */ - err = of_address_to_resource(dev->dev.of_node, 0, &res); - if (err) { - dev_err(&dev->dev, "%s resource error!\n", + /* + * Under the Freescale hypervisor, the msi nodes don't have a 'reg' + * property. Instead, we use hypercalls to access the MSI. + */ + if ((features->fsl_pic_ip & FSL_PIC_IP_MASK) != FSL_PIC_IP_VMPIC) { + err = of_address_to_resource(dev->dev.of_node, 0, &res); + if (err) { + dev_err(&dev->dev, "invalid resource for node %s\n", dev->dev.of_node->full_name); - goto error_out; - } + goto error_out; + } - msi->msi_regs = ioremap(res.start, resource_size(&res)); - if (!msi->msi_regs) { - dev_err(&dev->dev, "ioremap problem failed\n"); - goto error_out; + msi->msi_regs = ioremap(res.start, resource_size(&res)); + if (!msi->msi_regs) { + dev_err(&dev->dev, "could not map node %s\n", + dev->dev.of_node->full_name); + goto error_out; + } + msi->msiir_offset = + features->msiir_offset + (res.start & 0xfffff); } msi->feature = features->fsl_pic_ip; msi->irqhost->host_data = msi; - msi->msi_addr_hi = 0x0; - msi->msi_addr_lo = features->msiir_offset + (res.start & 0xfffff); + /* + * Remember the phandle, so that we can match with any PCI nodes + * that have an "fsl,msi" property. + */ + msi->phandle = dev->dev.of_node->phandle; rc = fsl_msi_init_allocator(msi); if (rc) { @@ -376,8 +442,10 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev) goto error_out; } - if (!p) + if (!p) { p = all_avail; + len = sizeof(all_avail); + } for (irq_index = 0, i = 0; i < len / (2 * sizeof(u32)); i++) { if (p[i * 2] % IRQS_PER_MSI_REG || @@ -393,7 +461,7 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev) count = p[i * 2 + 1] / IRQS_PER_MSI_REG; for (j = 0; j < count; j++, irq_index++) { - err = fsl_msi_setup_hwirq(msi, dev, offset, irq_index); + err = fsl_msi_setup_hwirq(msi, dev, offset + j, irq_index); if (err) goto error_out; } @@ -427,6 +495,11 @@ static const struct fsl_msi_feature ipic_msi_feature = { .msiir_offset = 0x38, }; +static const struct fsl_msi_feature vmpic_msi_feature = { + .fsl_pic_ip = FSL_PIC_IP_VMPIC, + .msiir_offset = 0, +}; + static const struct of_device_id fsl_of_msi_ids[] = { { .compatible = "fsl,mpic-msi", @@ -436,6 +509,10 @@ static const struct of_device_id fsl_of_msi_ids[] = { .compatible = "fsl,ipic-msi", .data = (void *)&ipic_msi_feature, }, + { + .compatible = "fsl,vmpic-msi", + .data = (void *)&vmpic_msi_feature, + }, {} }; diff --git a/arch/powerpc/sysdev/fsl_msi.h b/arch/powerpc/sysdev/fsl_msi.h index 624580c252d7..f6c646a52541 100644 --- a/arch/powerpc/sysdev/fsl_msi.h +++ b/arch/powerpc/sysdev/fsl_msi.h @@ -13,23 +13,24 @@ #ifndef _POWERPC_SYSDEV_FSL_MSI_H #define _POWERPC_SYSDEV_FSL_MSI_H +#include <linux/of.h> #include <asm/msi_bitmap.h> #define NR_MSI_REG 8 #define IRQS_PER_MSI_REG 32 #define NR_MSI_IRQS (NR_MSI_REG * IRQS_PER_MSI_REG) -#define FSL_PIC_IP_MASK 0x0000000F -#define FSL_PIC_IP_MPIC 0x00000001 -#define FSL_PIC_IP_IPIC 0x00000002 +#define FSL_PIC_IP_MASK 0x0000000F +#define FSL_PIC_IP_MPIC 0x00000001 +#define FSL_PIC_IP_IPIC 0x00000002 +#define FSL_PIC_IP_VMPIC 0x00000003 struct fsl_msi { struct irq_host *irqhost; unsigned long cascade_irq; - u32 msi_addr_lo; - u32 msi_addr_hi; + u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */ void __iomem *msi_regs; u32 feature; int msi_virqs[NR_MSI_REG]; @@ -37,6 +38,8 @@ struct fsl_msi { struct msi_bitmap bitmap; struct list_head list; /* support multiple MSI banks */ + + phandle phandle; }; #endif /* _POWERPC_SYSDEV_FSL_MSI_H */ diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 4ce547e00473..3b61e8cf3421 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -65,6 +65,30 @@ static int __init fsl_pcie_check_link(struct pci_controller *hose) } #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) + +#define MAX_PHYS_ADDR_BITS 40 +static u64 pci64_dma_offset = 1ull << MAX_PHYS_ADDR_BITS; + +static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask) +{ + if (!dev->dma_mask || !dma_supported(dev, dma_mask)) + return -EIO; + + /* + * Fixup PCI devices that are able to DMA to above the physical + * address width of the SoC such that we can address any internal + * SoC address from across PCI if needed + */ + if ((dev->bus == &pci_bus_type) && + dma_mask >= DMA_BIT_MASK(MAX_PHYS_ADDR_BITS)) { + set_dma_ops(dev, &dma_direct_ops); + set_dma_offset(dev, pci64_dma_offset); + } + + *dev->dma_mask = dma_mask; + return 0; +} + static int __init setup_one_atmu(struct ccsr_pci __iomem *pci, unsigned int index, const struct resource *res, resource_size_t offset) @@ -113,6 +137,8 @@ static void __init setup_pci_atmu(struct pci_controller *hose, u32 piwar = PIWAR_EN | PIWAR_PF | PIWAR_TGI_LOCAL | PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP; char *name = hose->dn->full_name; + const u64 *reg; + int len; pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n", (u64)rsrc->start, (u64)resource_size(rsrc)); @@ -205,6 +231,33 @@ static void __init setup_pci_atmu(struct pci_controller *hose, /* Setup inbound mem window */ mem = memblock_end_of_DRAM(); + + /* + * The msi-address-64 property, if it exists, indicates the physical + * address of the MSIIR register. Normally, this register is located + * inside CCSR, so the ATMU that covers all of CCSR is used. But if + * this property exists, then we normally need to create a new ATMU + * for it. For now, however, we cheat. The only entity that creates + * this property is the Freescale hypervisor, and the address is + * specified in the partition configuration. Typically, the address + * is located in the page immediately after the end of DDR. If so, we + * can avoid allocating a new ATMU by extending the DDR ATMU by one + * page. + */ + reg = of_get_property(hose->dn, "msi-address-64", &len); + if (reg && (len == sizeof(u64))) { + u64 address = be64_to_cpup(reg); + + if ((address >= mem) && (address < (mem + PAGE_SIZE))) { + pr_info("%s: extending DDR ATMU to cover MSIIR", name); + mem += PAGE_SIZE; + } else { + /* TODO: Create a new ATMU for MSIIR */ + pr_warn("%s: msi-address-64 address of %llx is " + "unsupported\n", name, address); + } + } + sz = min(mem, paddr_lo); mem_log = __ilog2_u64(sz); @@ -228,6 +281,37 @@ static void __init setup_pci_atmu(struct pci_controller *hose, hose->dma_window_base_cur = 0x00000000; hose->dma_window_size = (resource_size_t)sz; + + /* + * if we have >4G of memory setup second PCI inbound window to + * let devices that are 64-bit address capable to work w/o + * SWIOTLB and access the full range of memory + */ + if (sz != mem) { + mem_log = __ilog2_u64(mem); + + /* Size window up if we dont fit in exact power-of-2 */ + if ((1ull << mem_log) != mem) + mem_log++; + + piwar = (piwar & ~PIWAR_SZ_MASK) | (mem_log - 1); + + /* Setup inbound memory window */ + out_be32(&pci->piw[win_idx].pitar, 0x00000000); + out_be32(&pci->piw[win_idx].piwbear, + pci64_dma_offset >> 44); + out_be32(&pci->piw[win_idx].piwbar, + pci64_dma_offset >> 12); + out_be32(&pci->piw[win_idx].piwar, piwar); + + /* + * install our own dma_set_mask handler to fixup dma_ops + * and dma_offset + */ + ppc_md.dma_set_mask = fsl_pci_dma_set_mask; + + pr_info("%s: Setup 64-bit PCI DMA window\n", name); + } } else { u64 paddr = 0; diff --git a/arch/powerpc/sysdev/fsl_pmc.c b/arch/powerpc/sysdev/fsl_pmc.c index f122e8961d32..592a0f8d527a 100644 --- a/arch/powerpc/sysdev/fsl_pmc.c +++ b/arch/powerpc/sysdev/fsl_pmc.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/errno.h> +#include <linux/export.h> #include <linux/suspend.h> #include <linux/delay.h> #include <linux/device.h> diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c index c65f75aa7ff7..a4c4f4a932d8 100644 --- a/arch/powerpc/sysdev/fsl_rio.c +++ b/arch/powerpc/sysdev/fsl_rio.c @@ -10,7 +10,7 @@ * - Added Port-Write message handling * - Added Machine Check exception handling * - * Copyright (C) 2007, 2008, 2010 Freescale Semiconductor, Inc. + * Copyright (C) 2007, 2008, 2010, 2011 Freescale Semiconductor, Inc. * Zhang Wei <wei.zhang@freescale.com> * * Copyright 2005 MontaVista Software, Inc. @@ -28,240 +28,33 @@ #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/device.h> -#include <linux/rio.h> -#include <linux/rio_drv.h> #include <linux/of_platform.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/kfifo.h> -#include <asm/io.h> +#include <linux/io.h> +#include <linux/uaccess.h> #include <asm/machdep.h> -#include <asm/uaccess.h> -#undef DEBUG_PW /* Port-Write debugging */ +#include "fsl_rio.h" -/* RapidIO definition irq, which read from OF-tree */ -#define IRQ_RIO_BELL(m) (((struct rio_priv *)(m->priv))->bellirq) -#define IRQ_RIO_TX(m) (((struct rio_priv *)(m->priv))->txirq) -#define IRQ_RIO_RX(m) (((struct rio_priv *)(m->priv))->rxirq) -#define IRQ_RIO_PW(m) (((struct rio_priv *)(m->priv))->pwirq) - -#define IPWSR_CLEAR 0x98 -#define OMSR_CLEAR 0x1cb3 -#define IMSR_CLEAR 0x491 -#define IDSR_CLEAR 0x91 -#define ODSR_CLEAR 0x1c00 -#define LTLEECSR_ENABLE_ALL 0xFFC000FC -#define ESCSR_CLEAR 0x07120204 -#define IECSR_CLEAR 0x80000000 +#undef DEBUG_PW /* Port-Write debugging */ #define RIO_PORT1_EDCSR 0x0640 #define RIO_PORT2_EDCSR 0x0680 #define RIO_PORT1_IECSR 0x10130 #define RIO_PORT2_IECSR 0x101B0 -#define RIO_IM0SR 0x13064 -#define RIO_IM1SR 0x13164 -#define RIO_OM0SR 0x13004 -#define RIO_OM1SR 0x13104 - -#define RIO_ATMU_REGS_OFFSET 0x10c00 -#define RIO_P_MSG_REGS_OFFSET 0x11000 -#define RIO_S_MSG_REGS_OFFSET 0x13000 + #define RIO_GCCSR 0x13c #define RIO_ESCSR 0x158 +#define ESCSR_CLEAR 0x07120204 #define RIO_PORT2_ESCSR 0x178 #define RIO_CCSR 0x15c -#define RIO_LTLEDCSR 0x0608 #define RIO_LTLEDCSR_IER 0x80000000 #define RIO_LTLEDCSR_PRT 0x01000000 -#define RIO_LTLEECSR 0x060c -#define RIO_EPWISR 0x10010 +#define IECSR_CLEAR 0x80000000 #define RIO_ISR_AACR 0x10120 #define RIO_ISR_AACR_AA 0x1 /* Accept All ID */ -#define RIO_MAINT_WIN_SIZE 0x400000 -#define RIO_DBELL_WIN_SIZE 0x1000 - -#define RIO_MSG_OMR_MUI 0x00000002 -#define RIO_MSG_OSR_TE 0x00000080 -#define RIO_MSG_OSR_QOI 0x00000020 -#define RIO_MSG_OSR_QFI 0x00000010 -#define RIO_MSG_OSR_MUB 0x00000004 -#define RIO_MSG_OSR_EOMI 0x00000002 -#define RIO_MSG_OSR_QEI 0x00000001 - -#define RIO_MSG_IMR_MI 0x00000002 -#define RIO_MSG_ISR_TE 0x00000080 -#define RIO_MSG_ISR_QFI 0x00000010 -#define RIO_MSG_ISR_DIQI 0x00000001 - -#define RIO_IPWMR_SEN 0x00100000 -#define RIO_IPWMR_QFIE 0x00000100 -#define RIO_IPWMR_EIE 0x00000020 -#define RIO_IPWMR_CQ 0x00000002 -#define RIO_IPWMR_PWE 0x00000001 - -#define RIO_IPWSR_QF 0x00100000 -#define RIO_IPWSR_TE 0x00000080 -#define RIO_IPWSR_QFI 0x00000010 -#define RIO_IPWSR_PWD 0x00000008 -#define RIO_IPWSR_PWB 0x00000004 - -/* EPWISR Error match value */ -#define RIO_EPWISR_PINT1 0x80000000 -#define RIO_EPWISR_PINT2 0x40000000 -#define RIO_EPWISR_MU 0x00000002 -#define RIO_EPWISR_PW 0x00000001 - -#define RIO_MSG_DESC_SIZE 32 -#define RIO_MSG_BUFFER_SIZE 4096 -#define RIO_MIN_TX_RING_SIZE 2 -#define RIO_MAX_TX_RING_SIZE 2048 -#define RIO_MIN_RX_RING_SIZE 2 -#define RIO_MAX_RX_RING_SIZE 2048 - -#define DOORBELL_DMR_DI 0x00000002 -#define DOORBELL_DSR_TE 0x00000080 -#define DOORBELL_DSR_QFI 0x00000010 -#define DOORBELL_DSR_DIQI 0x00000001 -#define DOORBELL_TID_OFFSET 0x02 -#define DOORBELL_SID_OFFSET 0x04 -#define DOORBELL_INFO_OFFSET 0x06 - -#define DOORBELL_MESSAGE_SIZE 0x08 -#define DBELL_SID(x) (*(u16 *)(x + DOORBELL_SID_OFFSET)) -#define DBELL_TID(x) (*(u16 *)(x + DOORBELL_TID_OFFSET)) -#define DBELL_INF(x) (*(u16 *)(x + DOORBELL_INFO_OFFSET)) - -struct rio_atmu_regs { - u32 rowtar; - u32 rowtear; - u32 rowbar; - u32 pad2; - u32 rowar; - u32 pad3[3]; -}; - -struct rio_msg_regs { - u32 omr; /* 0xD_3000 - Outbound message 0 mode register */ - u32 osr; /* 0xD_3004 - Outbound message 0 status register */ - u32 pad1; - u32 odqdpar; /* 0xD_300C - Outbound message 0 descriptor queue - dequeue pointer address register */ - u32 pad2; - u32 osar; /* 0xD_3014 - Outbound message 0 source address - register */ - u32 odpr; /* 0xD_3018 - Outbound message 0 destination port - register */ - u32 odatr; /* 0xD_301C - Outbound message 0 destination attributes - Register*/ - u32 odcr; /* 0xD_3020 - Outbound message 0 double-word count - register */ - u32 pad3; - u32 odqepar; /* 0xD_3028 - Outbound message 0 descriptor queue - enqueue pointer address register */ - u32 pad4[13]; - u32 imr; /* 0xD_3060 - Inbound message 0 mode register */ - u32 isr; /* 0xD_3064 - Inbound message 0 status register */ - u32 pad5; - u32 ifqdpar; /* 0xD_306C - Inbound message 0 frame queue dequeue - pointer address register*/ - u32 pad6; - u32 ifqepar; /* 0xD_3074 - Inbound message 0 frame queue enqueue - pointer address register */ - u32 pad7[226]; - u32 odmr; /* 0xD_3400 - Outbound doorbell mode register */ - u32 odsr; /* 0xD_3404 - Outbound doorbell status register */ - u32 res0[4]; - u32 oddpr; /* 0xD_3418 - Outbound doorbell destination port - register */ - u32 oddatr; /* 0xD_341c - Outbound doorbell destination attributes - register */ - u32 res1[3]; - u32 odretcr; /* 0xD_342C - Outbound doorbell retry error threshold - configuration register */ - u32 res2[12]; - u32 dmr; /* 0xD_3460 - Inbound doorbell mode register */ - u32 dsr; /* 0xD_3464 - Inbound doorbell status register */ - u32 pad8; - u32 dqdpar; /* 0xD_346C - Inbound doorbell queue dequeue Pointer - address register */ - u32 pad9; - u32 dqepar; /* 0xD_3474 - Inbound doorbell Queue enqueue pointer - address register */ - u32 pad10[26]; - u32 pwmr; /* 0xD_34E0 - Inbound port-write mode register */ - u32 pwsr; /* 0xD_34E4 - Inbound port-write status register */ - u32 epwqbar; /* 0xD_34E8 - Extended Port-Write Queue Base Address - register */ - u32 pwqbar; /* 0xD_34EC - Inbound port-write queue base address - register */ -}; - -struct rio_tx_desc { - u32 res1; - u32 saddr; - u32 dport; - u32 dattr; - u32 res2; - u32 res3; - u32 dwcnt; - u32 res4; -}; - -struct rio_dbell_ring { - void *virt; - dma_addr_t phys; -}; - -struct rio_msg_tx_ring { - void *virt; - dma_addr_t phys; - void *virt_buffer[RIO_MAX_TX_RING_SIZE]; - dma_addr_t phys_buffer[RIO_MAX_TX_RING_SIZE]; - int tx_slot; - int size; - void *dev_id; -}; - -struct rio_msg_rx_ring { - void *virt; - dma_addr_t phys; - void *virt_buffer[RIO_MAX_RX_RING_SIZE]; - int rx_slot; - int size; - void *dev_id; -}; - -struct rio_port_write_msg { - void *virt; - dma_addr_t phys; - u32 msg_count; - u32 err_count; - u32 discard_count; -}; - -struct rio_priv { - struct device *dev; - void __iomem *regs_win; - struct rio_atmu_regs __iomem *atmu_regs; - struct rio_atmu_regs __iomem *maint_atmu_regs; - struct rio_atmu_regs __iomem *dbell_atmu_regs; - void __iomem *dbell_win; - void __iomem *maint_win; - struct rio_msg_regs __iomem *msg_regs; - struct rio_dbell_ring dbell_ring; - struct rio_msg_tx_ring msg_tx_ring; - struct rio_msg_rx_ring msg_rx_ring; - struct rio_port_write_msg port_write_msg; - int bellirq; - int txirq; - int rxirq; - int pwirq; - struct work_struct pw_work; - struct kfifo pw_fifo; - spinlock_t pw_fifo_lock; -}; #define __fsl_read_rio_config(x, addr, err, op) \ __asm__ __volatile__( \ @@ -279,7 +72,12 @@ struct rio_priv { : "=r" (err), "=r" (x) \ : "b" (addr), "i" (-EFAULT), "0" (err)) -static void __iomem *rio_regs_win; +void __iomem *rio_regs_win; +void __iomem *rmu_regs_win; +resource_size_t rio_law_start; + +struct fsl_rio_dbell *dbell; +struct fsl_rio_pw *pw; #ifdef CONFIG_E500 int fsl_rio_mcheck_exception(struct pt_regs *regs) @@ -311,42 +109,6 @@ EXPORT_SYMBOL_GPL(fsl_rio_mcheck_exception); #endif /** - * fsl_rio_doorbell_send - Send a MPC85xx doorbell message - * @mport: RapidIO master port info - * @index: ID of RapidIO interface - * @destid: Destination ID of target device - * @data: 16-bit info field of RapidIO doorbell message - * - * Sends a MPC85xx doorbell message. Returns %0 on success or - * %-EINVAL on failure. - */ -static int fsl_rio_doorbell_send(struct rio_mport *mport, - int index, u16 destid, u16 data) -{ - struct rio_priv *priv = mport->priv; - pr_debug("fsl_doorbell_send: index %d destid %4.4x data %4.4x\n", - index, destid, data); - switch (mport->phy_type) { - case RIO_PHY_PARALLEL: - out_be32(&priv->dbell_atmu_regs->rowtar, destid << 22); - out_be16(priv->dbell_win, data); - break; - case RIO_PHY_SERIAL: - /* In the serial version silicons, such as MPC8548, MPC8641, - * below operations is must be. - */ - out_be32(&priv->msg_regs->odmr, 0x00000000); - out_be32(&priv->msg_regs->odretcr, 0x00000004); - out_be32(&priv->msg_regs->oddpr, destid << 16); - out_be32(&priv->msg_regs->oddatr, data); - out_be32(&priv->msg_regs->odmr, 0x00000001); - break; - } - - return 0; -} - -/** * fsl_local_config_read - Generate a MPC85xx local config space read * @mport: RapidIO master port info * @index: ID of RapdiIO interface @@ -384,8 +146,8 @@ static int fsl_local_config_write(struct rio_mport *mport, { struct rio_priv *priv = mport->priv; pr_debug - ("fsl_local_config_write: index %d offset %8.8x data %8.8x\n", - index, offset, data); + ("fsl_local_config_write: index %d offset %8.8x data %8.8x\n", + index, offset, data); out_be32(priv->regs_win + offset, data); return 0; @@ -413,8 +175,9 @@ fsl_rio_config_read(struct rio_mport *mport, int index, u16 destid, u32 rval, err = 0; pr_debug - ("fsl_rio_config_read: index %d destid %d hopcount %d offset %8.8x len %d\n", - index, destid, hopcount, offset, len); + ("fsl_rio_config_read:" + " index %d destid %d hopcount %d offset %8.8x len %d\n", + index, destid, hopcount, offset, len); /* 16MB maintenance window possible */ /* allow only aligned access to maintenance registers */ @@ -423,7 +186,7 @@ fsl_rio_config_read(struct rio_mport *mport, int index, u16 destid, out_be32(&priv->maint_atmu_regs->rowtar, (destid << 22) | (hopcount << 12) | (offset >> 12)); - out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); + out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); data = (u8 *) priv->maint_win + (offset & (RIO_MAINT_WIN_SIZE - 1)); switch (len) { @@ -470,8 +233,9 @@ fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid, struct rio_priv *priv = mport->priv; u8 *data; pr_debug - ("fsl_rio_config_write: index %d destid %d hopcount %d offset %8.8x len %d val %8.8x\n", - index, destid, hopcount, offset, len, val); + ("fsl_rio_config_write:" + " index %d destid %d hopcount %d offset %8.8x len %d val %8.8x\n", + index, destid, hopcount, offset, len, val); /* 16MB maintenance windows possible */ /* allow only aligned access to maintenance registers */ @@ -480,7 +244,7 @@ fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid, out_be32(&priv->maint_atmu_regs->rowtar, (destid << 22) | (hopcount << 12) | (offset >> 12)); - out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); + out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); data = (u8 *) priv->maint_win + (offset & (RIO_MAINT_WIN_SIZE - 1)); switch (len) { @@ -500,590 +264,7 @@ fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid, return 0; } -/** - * fsl_add_outb_message - Add message to the MPC85xx outbound message queue - * @mport: Master port with outbound message queue - * @rdev: Target of outbound message - * @mbox: Outbound mailbox - * @buffer: Message to add to outbound queue - * @len: Length of message - * - * Adds the @buffer message to the MPC85xx outbound message queue. Returns - * %0 on success or %-EINVAL on failure. - */ -static int -fsl_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox, - void *buffer, size_t len) -{ - struct rio_priv *priv = mport->priv; - u32 omr; - struct rio_tx_desc *desc = (struct rio_tx_desc *)priv->msg_tx_ring.virt - + priv->msg_tx_ring.tx_slot; - int ret = 0; - - pr_debug("RIO: fsl_add_outb_message(): destid %4.4x mbox %d buffer " \ - "%8.8x len %8.8x\n", rdev->destid, mbox, (int)buffer, len); - - if ((len < 8) || (len > RIO_MAX_MSG_SIZE)) { - ret = -EINVAL; - goto out; - } - - /* Copy and clear rest of buffer */ - memcpy(priv->msg_tx_ring.virt_buffer[priv->msg_tx_ring.tx_slot], buffer, - len); - if (len < (RIO_MAX_MSG_SIZE - 4)) - memset(priv->msg_tx_ring.virt_buffer[priv->msg_tx_ring.tx_slot] - + len, 0, RIO_MAX_MSG_SIZE - len); - - switch (mport->phy_type) { - case RIO_PHY_PARALLEL: - /* Set mbox field for message */ - desc->dport = mbox & 0x3; - - /* Enable EOMI interrupt, set priority, and set destid */ - desc->dattr = 0x28000000 | (rdev->destid << 2); - break; - case RIO_PHY_SERIAL: - /* Set mbox field for message, and set destid */ - desc->dport = (rdev->destid << 16) | (mbox & 0x3); - - /* Enable EOMI interrupt and priority */ - desc->dattr = 0x28000000; - break; - } - - /* Set transfer size aligned to next power of 2 (in double words) */ - desc->dwcnt = is_power_of_2(len) ? len : 1 << get_bitmask_order(len); - - /* Set snooping and source buffer address */ - desc->saddr = 0x00000004 - | priv->msg_tx_ring.phys_buffer[priv->msg_tx_ring.tx_slot]; - - /* Increment enqueue pointer */ - omr = in_be32(&priv->msg_regs->omr); - out_be32(&priv->msg_regs->omr, omr | RIO_MSG_OMR_MUI); - - /* Go to next descriptor */ - if (++priv->msg_tx_ring.tx_slot == priv->msg_tx_ring.size) - priv->msg_tx_ring.tx_slot = 0; - - out: - return ret; -} - -/** - * fsl_rio_tx_handler - MPC85xx outbound message interrupt handler - * @irq: Linux interrupt number - * @dev_instance: Pointer to interrupt-specific data - * - * Handles outbound message interrupts. Executes a register outbound - * mailbox event handler and acks the interrupt occurrence. - */ -static irqreturn_t -fsl_rio_tx_handler(int irq, void *dev_instance) -{ - int osr; - struct rio_mport *port = (struct rio_mport *)dev_instance; - struct rio_priv *priv = port->priv; - - osr = in_be32(&priv->msg_regs->osr); - - if (osr & RIO_MSG_OSR_TE) { - pr_info("RIO: outbound message transmission error\n"); - out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_TE); - goto out; - } - - if (osr & RIO_MSG_OSR_QOI) { - pr_info("RIO: outbound message queue overflow\n"); - out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_QOI); - goto out; - } - - if (osr & RIO_MSG_OSR_EOMI) { - u32 dqp = in_be32(&priv->msg_regs->odqdpar); - int slot = (dqp - priv->msg_tx_ring.phys) >> 5; - port->outb_msg[0].mcback(port, priv->msg_tx_ring.dev_id, -1, - slot); - - /* Ack the end-of-message interrupt */ - out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_EOMI); - } - - out: - return IRQ_HANDLED; -} - -/** - * fsl_open_outb_mbox - Initialize MPC85xx outbound mailbox - * @mport: Master port implementing the outbound message unit - * @dev_id: Device specific pointer to pass on event - * @mbox: Mailbox to open - * @entries: Number of entries in the outbound mailbox ring - * - * Initializes buffer ring, request the outbound message interrupt, - * and enables the outbound message unit. Returns %0 on success and - * %-EINVAL or %-ENOMEM on failure. - */ -static int -fsl_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) -{ - int i, j, rc = 0; - struct rio_priv *priv = mport->priv; - - if ((entries < RIO_MIN_TX_RING_SIZE) || - (entries > RIO_MAX_TX_RING_SIZE) || (!is_power_of_2(entries))) { - rc = -EINVAL; - goto out; - } - - /* Initialize shadow copy ring */ - priv->msg_tx_ring.dev_id = dev_id; - priv->msg_tx_ring.size = entries; - - for (i = 0; i < priv->msg_tx_ring.size; i++) { - priv->msg_tx_ring.virt_buffer[i] = - dma_alloc_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, - &priv->msg_tx_ring.phys_buffer[i], GFP_KERNEL); - if (!priv->msg_tx_ring.virt_buffer[i]) { - rc = -ENOMEM; - for (j = 0; j < priv->msg_tx_ring.size; j++) - if (priv->msg_tx_ring.virt_buffer[j]) - dma_free_coherent(priv->dev, - RIO_MSG_BUFFER_SIZE, - priv->msg_tx_ring. - virt_buffer[j], - priv->msg_tx_ring. - phys_buffer[j]); - goto out; - } - } - - /* Initialize outbound message descriptor ring */ - priv->msg_tx_ring.virt = dma_alloc_coherent(priv->dev, - priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE, - &priv->msg_tx_ring.phys, GFP_KERNEL); - if (!priv->msg_tx_ring.virt) { - rc = -ENOMEM; - goto out_dma; - } - memset(priv->msg_tx_ring.virt, 0, - priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE); - priv->msg_tx_ring.tx_slot = 0; - - /* Point dequeue/enqueue pointers at first entry in ring */ - out_be32(&priv->msg_regs->odqdpar, priv->msg_tx_ring.phys); - out_be32(&priv->msg_regs->odqepar, priv->msg_tx_ring.phys); - - /* Configure for snooping */ - out_be32(&priv->msg_regs->osar, 0x00000004); - - /* Clear interrupt status */ - out_be32(&priv->msg_regs->osr, 0x000000b3); - - /* Hook up outbound message handler */ - rc = request_irq(IRQ_RIO_TX(mport), fsl_rio_tx_handler, 0, - "msg_tx", (void *)mport); - if (rc < 0) - goto out_irq; - - /* - * Configure outbound message unit - * Snooping - * Interrupts (all enabled, except QEIE) - * Chaining mode - * Disable - */ - out_be32(&priv->msg_regs->omr, 0x00100220); - - /* Set number of entries */ - out_be32(&priv->msg_regs->omr, - in_be32(&priv->msg_regs->omr) | - ((get_bitmask_order(entries) - 2) << 12)); - - /* Now enable the unit */ - out_be32(&priv->msg_regs->omr, in_be32(&priv->msg_regs->omr) | 0x1); - - out: - return rc; - - out_irq: - dma_free_coherent(priv->dev, - priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE, - priv->msg_tx_ring.virt, priv->msg_tx_ring.phys); - - out_dma: - for (i = 0; i < priv->msg_tx_ring.size; i++) - dma_free_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, - priv->msg_tx_ring.virt_buffer[i], - priv->msg_tx_ring.phys_buffer[i]); - - return rc; -} - -/** - * fsl_close_outb_mbox - Shut down MPC85xx outbound mailbox - * @mport: Master port implementing the outbound message unit - * @mbox: Mailbox to close - * - * Disables the outbound message unit, free all buffers, and - * frees the outbound message interrupt. - */ -static void fsl_close_outb_mbox(struct rio_mport *mport, int mbox) -{ - struct rio_priv *priv = mport->priv; - /* Disable inbound message unit */ - out_be32(&priv->msg_regs->omr, 0); - - /* Free ring */ - dma_free_coherent(priv->dev, - priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE, - priv->msg_tx_ring.virt, priv->msg_tx_ring.phys); - - /* Free interrupt */ - free_irq(IRQ_RIO_TX(mport), (void *)mport); -} - -/** - * fsl_rio_rx_handler - MPC85xx inbound message interrupt handler - * @irq: Linux interrupt number - * @dev_instance: Pointer to interrupt-specific data - * - * Handles inbound message interrupts. Executes a registered inbound - * mailbox event handler and acks the interrupt occurrence. - */ -static irqreturn_t -fsl_rio_rx_handler(int irq, void *dev_instance) -{ - int isr; - struct rio_mport *port = (struct rio_mport *)dev_instance; - struct rio_priv *priv = port->priv; - - isr = in_be32(&priv->msg_regs->isr); - - if (isr & RIO_MSG_ISR_TE) { - pr_info("RIO: inbound message reception error\n"); - out_be32((void *)&priv->msg_regs->isr, RIO_MSG_ISR_TE); - goto out; - } - - /* XXX Need to check/dispatch until queue empty */ - if (isr & RIO_MSG_ISR_DIQI) { - /* - * We implement *only* mailbox 0, but can receive messages - * for any mailbox/letter to that mailbox destination. So, - * make the callback with an unknown/invalid mailbox number - * argument. - */ - port->inb_msg[0].mcback(port, priv->msg_rx_ring.dev_id, -1, -1); - - /* Ack the queueing interrupt */ - out_be32(&priv->msg_regs->isr, RIO_MSG_ISR_DIQI); - } - - out: - return IRQ_HANDLED; -} - -/** - * fsl_open_inb_mbox - Initialize MPC85xx inbound mailbox - * @mport: Master port implementing the inbound message unit - * @dev_id: Device specific pointer to pass on event - * @mbox: Mailbox to open - * @entries: Number of entries in the inbound mailbox ring - * - * Initializes buffer ring, request the inbound message interrupt, - * and enables the inbound message unit. Returns %0 on success - * and %-EINVAL or %-ENOMEM on failure. - */ -static int -fsl_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) -{ - int i, rc = 0; - struct rio_priv *priv = mport->priv; - - if ((entries < RIO_MIN_RX_RING_SIZE) || - (entries > RIO_MAX_RX_RING_SIZE) || (!is_power_of_2(entries))) { - rc = -EINVAL; - goto out; - } - - /* Initialize client buffer ring */ - priv->msg_rx_ring.dev_id = dev_id; - priv->msg_rx_ring.size = entries; - priv->msg_rx_ring.rx_slot = 0; - for (i = 0; i < priv->msg_rx_ring.size; i++) - priv->msg_rx_ring.virt_buffer[i] = NULL; - - /* Initialize inbound message ring */ - priv->msg_rx_ring.virt = dma_alloc_coherent(priv->dev, - priv->msg_rx_ring.size * RIO_MAX_MSG_SIZE, - &priv->msg_rx_ring.phys, GFP_KERNEL); - if (!priv->msg_rx_ring.virt) { - rc = -ENOMEM; - goto out; - } - - /* Point dequeue/enqueue pointers at first entry in ring */ - out_be32(&priv->msg_regs->ifqdpar, (u32) priv->msg_rx_ring.phys); - out_be32(&priv->msg_regs->ifqepar, (u32) priv->msg_rx_ring.phys); - - /* Clear interrupt status */ - out_be32(&priv->msg_regs->isr, 0x00000091); - - /* Hook up inbound message handler */ - rc = request_irq(IRQ_RIO_RX(mport), fsl_rio_rx_handler, 0, - "msg_rx", (void *)mport); - if (rc < 0) { - dma_free_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, - priv->msg_tx_ring.virt_buffer[i], - priv->msg_tx_ring.phys_buffer[i]); - goto out; - } - - /* - * Configure inbound message unit: - * Snooping - * 4KB max message size - * Unmask all interrupt sources - * Disable - */ - out_be32(&priv->msg_regs->imr, 0x001b0060); - - /* Set number of queue entries */ - setbits32(&priv->msg_regs->imr, (get_bitmask_order(entries) - 2) << 12); - - /* Now enable the unit */ - setbits32(&priv->msg_regs->imr, 0x1); - - out: - return rc; -} - -/** - * fsl_close_inb_mbox - Shut down MPC85xx inbound mailbox - * @mport: Master port implementing the inbound message unit - * @mbox: Mailbox to close - * - * Disables the inbound message unit, free all buffers, and - * frees the inbound message interrupt. - */ -static void fsl_close_inb_mbox(struct rio_mport *mport, int mbox) -{ - struct rio_priv *priv = mport->priv; - /* Disable inbound message unit */ - out_be32(&priv->msg_regs->imr, 0); - - /* Free ring */ - dma_free_coherent(priv->dev, priv->msg_rx_ring.size * RIO_MAX_MSG_SIZE, - priv->msg_rx_ring.virt, priv->msg_rx_ring.phys); - - /* Free interrupt */ - free_irq(IRQ_RIO_RX(mport), (void *)mport); -} - -/** - * fsl_add_inb_buffer - Add buffer to the MPC85xx inbound message queue - * @mport: Master port implementing the inbound message unit - * @mbox: Inbound mailbox number - * @buf: Buffer to add to inbound queue - * - * Adds the @buf buffer to the MPC85xx inbound message queue. Returns - * %0 on success or %-EINVAL on failure. - */ -static int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf) -{ - int rc = 0; - struct rio_priv *priv = mport->priv; - - pr_debug("RIO: fsl_add_inb_buffer(), msg_rx_ring.rx_slot %d\n", - priv->msg_rx_ring.rx_slot); - - if (priv->msg_rx_ring.virt_buffer[priv->msg_rx_ring.rx_slot]) { - printk(KERN_ERR - "RIO: error adding inbound buffer %d, buffer exists\n", - priv->msg_rx_ring.rx_slot); - rc = -EINVAL; - goto out; - } - - priv->msg_rx_ring.virt_buffer[priv->msg_rx_ring.rx_slot] = buf; - if (++priv->msg_rx_ring.rx_slot == priv->msg_rx_ring.size) - priv->msg_rx_ring.rx_slot = 0; - - out: - return rc; -} - -/** - * fsl_get_inb_message - Fetch inbound message from the MPC85xx message unit - * @mport: Master port implementing the inbound message unit - * @mbox: Inbound mailbox number - * - * Gets the next available inbound message from the inbound message queue. - * A pointer to the message is returned on success or NULL on failure. - */ -static void *fsl_get_inb_message(struct rio_mport *mport, int mbox) -{ - struct rio_priv *priv = mport->priv; - u32 phys_buf, virt_buf; - void *buf = NULL; - int buf_idx; - - phys_buf = in_be32(&priv->msg_regs->ifqdpar); - - /* If no more messages, then bail out */ - if (phys_buf == in_be32(&priv->msg_regs->ifqepar)) - goto out2; - - virt_buf = (u32) priv->msg_rx_ring.virt + (phys_buf - - priv->msg_rx_ring.phys); - buf_idx = (phys_buf - priv->msg_rx_ring.phys) / RIO_MAX_MSG_SIZE; - buf = priv->msg_rx_ring.virt_buffer[buf_idx]; - - if (!buf) { - printk(KERN_ERR - "RIO: inbound message copy failed, no buffers\n"); - goto out1; - } - - /* Copy max message size, caller is expected to allocate that big */ - memcpy(buf, (void *)virt_buf, RIO_MAX_MSG_SIZE); - - /* Clear the available buffer */ - priv->msg_rx_ring.virt_buffer[buf_idx] = NULL; - - out1: - setbits32(&priv->msg_regs->imr, RIO_MSG_IMR_MI); - - out2: - return buf; -} - -/** - * fsl_rio_dbell_handler - MPC85xx doorbell interrupt handler - * @irq: Linux interrupt number - * @dev_instance: Pointer to interrupt-specific data - * - * Handles doorbell interrupts. Parses a list of registered - * doorbell event handlers and executes a matching event handler. - */ -static irqreturn_t -fsl_rio_dbell_handler(int irq, void *dev_instance) -{ - int dsr; - struct rio_mport *port = (struct rio_mport *)dev_instance; - struct rio_priv *priv = port->priv; - - dsr = in_be32(&priv->msg_regs->dsr); - - if (dsr & DOORBELL_DSR_TE) { - pr_info("RIO: doorbell reception error\n"); - out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_TE); - goto out; - } - - if (dsr & DOORBELL_DSR_QFI) { - pr_info("RIO: doorbell queue full\n"); - out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_QFI); - } - - /* XXX Need to check/dispatch until queue empty */ - if (dsr & DOORBELL_DSR_DIQI) { - u32 dmsg = - (u32) priv->dbell_ring.virt + - (in_be32(&priv->msg_regs->dqdpar) & 0xfff); - struct rio_dbell *dbell; - int found = 0; - - pr_debug - ("RIO: processing doorbell, sid %2.2x tid %2.2x info %4.4x\n", - DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg)); - - list_for_each_entry(dbell, &port->dbells, node) { - if ((dbell->res->start <= DBELL_INF(dmsg)) && - (dbell->res->end >= DBELL_INF(dmsg))) { - found = 1; - break; - } - } - if (found) { - dbell->dinb(port, dbell->dev_id, DBELL_SID(dmsg), DBELL_TID(dmsg), - DBELL_INF(dmsg)); - } else { - pr_debug - ("RIO: spurious doorbell, sid %2.2x tid %2.2x info %4.4x\n", - DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg)); - } - setbits32(&priv->msg_regs->dmr, DOORBELL_DMR_DI); - out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_DIQI); - } - - out: - return IRQ_HANDLED; -} - -/** - * fsl_rio_doorbell_init - MPC85xx doorbell interface init - * @mport: Master port implementing the inbound doorbell unit - * - * Initializes doorbell unit hardware and inbound DMA buffer - * ring. Called from fsl_rio_setup(). Returns %0 on success - * or %-ENOMEM on failure. - */ -static int fsl_rio_doorbell_init(struct rio_mport *mport) -{ - struct rio_priv *priv = mport->priv; - int rc = 0; - - /* Map outbound doorbell window immediately after maintenance window */ - priv->dbell_win = ioremap(mport->iores.start + RIO_MAINT_WIN_SIZE, - RIO_DBELL_WIN_SIZE); - if (!priv->dbell_win) { - printk(KERN_ERR - "RIO: unable to map outbound doorbell window\n"); - rc = -ENOMEM; - goto out; - } - - /* Initialize inbound doorbells */ - priv->dbell_ring.virt = dma_alloc_coherent(priv->dev, 512 * - DOORBELL_MESSAGE_SIZE, &priv->dbell_ring.phys, GFP_KERNEL); - if (!priv->dbell_ring.virt) { - printk(KERN_ERR "RIO: unable allocate inbound doorbell ring\n"); - rc = -ENOMEM; - iounmap(priv->dbell_win); - goto out; - } - - /* Point dequeue/enqueue pointers at first entry in ring */ - out_be32(&priv->msg_regs->dqdpar, (u32) priv->dbell_ring.phys); - out_be32(&priv->msg_regs->dqepar, (u32) priv->dbell_ring.phys); - - /* Clear interrupt status */ - out_be32(&priv->msg_regs->dsr, 0x00000091); - - /* Hook up doorbell handler */ - rc = request_irq(IRQ_RIO_BELL(mport), fsl_rio_dbell_handler, 0, - "dbell_rx", (void *)mport); - if (rc < 0) { - iounmap(priv->dbell_win); - dma_free_coherent(priv->dev, 512 * DOORBELL_MESSAGE_SIZE, - priv->dbell_ring.virt, priv->dbell_ring.phys); - printk(KERN_ERR - "MPC85xx RIO: unable to request inbound doorbell irq"); - goto out; - } - - /* Configure doorbells for snooping, 512 entries, and enable */ - out_be32(&priv->msg_regs->dmr, 0x00108161); - - out: - return rc; -} - -static void port_error_handler(struct rio_mport *port, int offset) +void fsl_rio_port_error_handler(int offset) { /*XXX: Error recovery is not implemented, we just clear errors */ out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); @@ -1098,263 +279,6 @@ static void port_error_handler(struct rio_mport *port, int offset) out_be32((u32 *)(rio_regs_win + RIO_PORT2_ESCSR), ESCSR_CLEAR); } } - -static void msg_unit_error_handler(struct rio_mport *port) -{ - struct rio_priv *priv = port->priv; - - /*XXX: Error recovery is not implemented, we just clear errors */ - out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); - - out_be32((u32 *)(rio_regs_win + RIO_IM0SR), IMSR_CLEAR); - out_be32((u32 *)(rio_regs_win + RIO_IM1SR), IMSR_CLEAR); - out_be32((u32 *)(rio_regs_win + RIO_OM0SR), OMSR_CLEAR); - out_be32((u32 *)(rio_regs_win + RIO_OM1SR), OMSR_CLEAR); - - out_be32(&priv->msg_regs->odsr, ODSR_CLEAR); - out_be32(&priv->msg_regs->dsr, IDSR_CLEAR); - - out_be32(&priv->msg_regs->pwsr, IPWSR_CLEAR); -} - -/** - * fsl_rio_port_write_handler - MPC85xx port write interrupt handler - * @irq: Linux interrupt number - * @dev_instance: Pointer to interrupt-specific data - * - * Handles port write interrupts. Parses a list of registered - * port write event handlers and executes a matching event handler. - */ -static irqreturn_t -fsl_rio_port_write_handler(int irq, void *dev_instance) -{ - u32 ipwmr, ipwsr; - struct rio_mport *port = (struct rio_mport *)dev_instance; - struct rio_priv *priv = port->priv; - u32 epwisr, tmp; - - epwisr = in_be32(priv->regs_win + RIO_EPWISR); - if (!(epwisr & RIO_EPWISR_PW)) - goto pw_done; - - ipwmr = in_be32(&priv->msg_regs->pwmr); - ipwsr = in_be32(&priv->msg_regs->pwsr); - -#ifdef DEBUG_PW - pr_debug("PW Int->IPWMR: 0x%08x IPWSR: 0x%08x (", ipwmr, ipwsr); - if (ipwsr & RIO_IPWSR_QF) - pr_debug(" QF"); - if (ipwsr & RIO_IPWSR_TE) - pr_debug(" TE"); - if (ipwsr & RIO_IPWSR_QFI) - pr_debug(" QFI"); - if (ipwsr & RIO_IPWSR_PWD) - pr_debug(" PWD"); - if (ipwsr & RIO_IPWSR_PWB) - pr_debug(" PWB"); - pr_debug(" )\n"); -#endif - /* Schedule deferred processing if PW was received */ - if (ipwsr & RIO_IPWSR_QFI) { - /* Save PW message (if there is room in FIFO), - * otherwise discard it. - */ - if (kfifo_avail(&priv->pw_fifo) >= RIO_PW_MSG_SIZE) { - priv->port_write_msg.msg_count++; - kfifo_in(&priv->pw_fifo, priv->port_write_msg.virt, - RIO_PW_MSG_SIZE); - } else { - priv->port_write_msg.discard_count++; - pr_debug("RIO: ISR Discarded Port-Write Msg(s) (%d)\n", - priv->port_write_msg.discard_count); - } - /* Clear interrupt and issue Clear Queue command. This allows - * another port-write to be received. - */ - out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_QFI); - out_be32(&priv->msg_regs->pwmr, ipwmr | RIO_IPWMR_CQ); - - schedule_work(&priv->pw_work); - } - - if ((ipwmr & RIO_IPWMR_EIE) && (ipwsr & RIO_IPWSR_TE)) { - priv->port_write_msg.err_count++; - pr_debug("RIO: Port-Write Transaction Err (%d)\n", - priv->port_write_msg.err_count); - /* Clear Transaction Error: port-write controller should be - * disabled when clearing this error - */ - out_be32(&priv->msg_regs->pwmr, ipwmr & ~RIO_IPWMR_PWE); - out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_TE); - out_be32(&priv->msg_regs->pwmr, ipwmr); - } - - if (ipwsr & RIO_IPWSR_PWD) { - priv->port_write_msg.discard_count++; - pr_debug("RIO: Port Discarded Port-Write Msg(s) (%d)\n", - priv->port_write_msg.discard_count); - out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_PWD); - } - -pw_done: - if (epwisr & RIO_EPWISR_PINT1) { - tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); - pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); - port_error_handler(port, 0); - } - - if (epwisr & RIO_EPWISR_PINT2) { - tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); - pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); - port_error_handler(port, 1); - } - - if (epwisr & RIO_EPWISR_MU) { - tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); - pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); - msg_unit_error_handler(port); - } - - return IRQ_HANDLED; -} - -static void fsl_pw_dpc(struct work_struct *work) -{ - struct rio_priv *priv = container_of(work, struct rio_priv, pw_work); - unsigned long flags; - u32 msg_buffer[RIO_PW_MSG_SIZE/sizeof(u32)]; - - /* - * Process port-write messages - */ - spin_lock_irqsave(&priv->pw_fifo_lock, flags); - while (kfifo_out(&priv->pw_fifo, (unsigned char *)msg_buffer, - RIO_PW_MSG_SIZE)) { - /* Process one message */ - spin_unlock_irqrestore(&priv->pw_fifo_lock, flags); -#ifdef DEBUG_PW - { - u32 i; - pr_debug("%s : Port-Write Message:", __func__); - for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32); i++) { - if ((i%4) == 0) - pr_debug("\n0x%02x: 0x%08x", i*4, - msg_buffer[i]); - else - pr_debug(" 0x%08x", msg_buffer[i]); - } - pr_debug("\n"); - } -#endif - /* Pass the port-write message to RIO core for processing */ - rio_inb_pwrite_handler((union rio_pw_msg *)msg_buffer); - spin_lock_irqsave(&priv->pw_fifo_lock, flags); - } - spin_unlock_irqrestore(&priv->pw_fifo_lock, flags); -} - -/** - * fsl_rio_pw_enable - enable/disable port-write interface init - * @mport: Master port implementing the port write unit - * @enable: 1=enable; 0=disable port-write message handling - */ -static int fsl_rio_pw_enable(struct rio_mport *mport, int enable) -{ - struct rio_priv *priv = mport->priv; - u32 rval; - - rval = in_be32(&priv->msg_regs->pwmr); - - if (enable) - rval |= RIO_IPWMR_PWE; - else - rval &= ~RIO_IPWMR_PWE; - - out_be32(&priv->msg_regs->pwmr, rval); - - return 0; -} - -/** - * fsl_rio_port_write_init - MPC85xx port write interface init - * @mport: Master port implementing the port write unit - * - * Initializes port write unit hardware and DMA buffer - * ring. Called from fsl_rio_setup(). Returns %0 on success - * or %-ENOMEM on failure. - */ -static int fsl_rio_port_write_init(struct rio_mport *mport) -{ - struct rio_priv *priv = mport->priv; - int rc = 0; - - /* Following configurations require a disabled port write controller */ - out_be32(&priv->msg_regs->pwmr, - in_be32(&priv->msg_regs->pwmr) & ~RIO_IPWMR_PWE); - - /* Initialize port write */ - priv->port_write_msg.virt = dma_alloc_coherent(priv->dev, - RIO_PW_MSG_SIZE, - &priv->port_write_msg.phys, GFP_KERNEL); - if (!priv->port_write_msg.virt) { - pr_err("RIO: unable allocate port write queue\n"); - return -ENOMEM; - } - - priv->port_write_msg.err_count = 0; - priv->port_write_msg.discard_count = 0; - - /* Point dequeue/enqueue pointers at first entry */ - out_be32(&priv->msg_regs->epwqbar, 0); - out_be32(&priv->msg_regs->pwqbar, (u32) priv->port_write_msg.phys); - - pr_debug("EIPWQBAR: 0x%08x IPWQBAR: 0x%08x\n", - in_be32(&priv->msg_regs->epwqbar), - in_be32(&priv->msg_regs->pwqbar)); - - /* Clear interrupt status IPWSR */ - out_be32(&priv->msg_regs->pwsr, - (RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD)); - - /* Configure port write contoller for snooping enable all reporting, - clear queue full */ - out_be32(&priv->msg_regs->pwmr, - RIO_IPWMR_SEN | RIO_IPWMR_QFIE | RIO_IPWMR_EIE | RIO_IPWMR_CQ); - - - /* Hook up port-write handler */ - rc = request_irq(IRQ_RIO_PW(mport), fsl_rio_port_write_handler, - IRQF_SHARED, "port-write", (void *)mport); - if (rc < 0) { - pr_err("MPC85xx RIO: unable to request inbound doorbell irq"); - goto err_out; - } - /* Enable Error Interrupt */ - out_be32((u32 *)(rio_regs_win + RIO_LTLEECSR), LTLEECSR_ENABLE_ALL); - - INIT_WORK(&priv->pw_work, fsl_pw_dpc); - spin_lock_init(&priv->pw_fifo_lock); - if (kfifo_alloc(&priv->pw_fifo, RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) { - pr_err("FIFO allocation failed\n"); - rc = -ENOMEM; - goto err_out_irq; - } - - pr_debug("IPWMR: 0x%08x IPWSR: 0x%08x\n", - in_be32(&priv->msg_regs->pwmr), - in_be32(&priv->msg_regs->pwsr)); - - return rc; - -err_out_irq: - free_irq(IRQ_RIO_PW(mport), (void *)mport); -err_out: - dma_free_coherent(priv->dev, RIO_PW_MSG_SIZE, - priv->port_write_msg.virt, - priv->port_write_msg.phys); - return rc; -} - static inline void fsl_rio_info(struct device *dev, u32 ccsr) { const char *str; @@ -1411,16 +335,21 @@ int fsl_rio_setup(struct platform_device *dev) struct rio_mport *port; struct rio_priv *priv; int rc = 0; - const u32 *dt_range, *cell; - struct resource regs; + const u32 *dt_range, *cell, *port_index; + u32 active_ports = 0; + struct resource regs, rmu_regs; + struct device_node *np, *rmu_node; int rlen; u32 ccsr; - u64 law_start, law_size; + u64 range_start, range_size; int paw, aw, sw; + u32 i; + static int tmp; + struct device_node *rmu_np[MAX_MSG_UNIT_NUM] = {NULL}; if (!dev->dev.of_node) { dev_err(&dev->dev, "Device OF-Node is NULL"); - return -EFAULT; + return -ENODEV; } rc = of_address_to_resource(dev->dev.of_node, 0, ®s); @@ -1429,37 +358,17 @@ int fsl_rio_setup(struct platform_device *dev) dev->dev.of_node->full_name); return -EFAULT; } - dev_info(&dev->dev, "Of-device full name %s\n", dev->dev.of_node->full_name); + dev_info(&dev->dev, "Of-device full name %s\n", + dev->dev.of_node->full_name); dev_info(&dev->dev, "Regs: %pR\n", ®s); - dt_range = of_get_property(dev->dev.of_node, "ranges", &rlen); - if (!dt_range) { - dev_err(&dev->dev, "Can't get %s property 'ranges'\n", - dev->dev.of_node->full_name); - return -EFAULT; + rio_regs_win = ioremap(regs.start, resource_size(®s)); + if (!rio_regs_win) { + dev_err(&dev->dev, "Unable to map rio register window\n"); + rc = -ENOMEM; + goto err_rio_regs; } - /* Get node address wide */ - cell = of_get_property(dev->dev.of_node, "#address-cells", NULL); - if (cell) - aw = *cell; - else - aw = of_n_addr_cells(dev->dev.of_node); - /* Get node size wide */ - cell = of_get_property(dev->dev.of_node, "#size-cells", NULL); - if (cell) - sw = *cell; - else - sw = of_n_size_cells(dev->dev.of_node); - /* Get parent address wide wide */ - paw = of_n_addr_cells(dev->dev.of_node); - - law_start = of_read_number(dt_range + aw, paw); - law_size = of_read_number(dt_range + aw + paw, sw); - - dev_info(&dev->dev, "LAW start 0x%016llx, size 0x%016llx.\n", - law_start, law_size); - ops = kzalloc(sizeof(struct rio_ops), GFP_KERNEL); if (!ops) { rc = -ENOMEM; @@ -1479,142 +388,257 @@ int fsl_rio_setup(struct platform_device *dev) ops->add_inb_buffer = fsl_add_inb_buffer; ops->get_inb_message = fsl_get_inb_message; - port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL); - if (!port) { + rmu_node = of_parse_phandle(dev->dev.of_node, "fsl,srio-rmu-handle", 0); + if (!rmu_node) + goto err_rmu; + rc = of_address_to_resource(rmu_node, 0, &rmu_regs); + if (rc) { + dev_err(&dev->dev, "Can't get %s property 'reg'\n", + rmu_node->full_name); + goto err_rmu; + } + rmu_regs_win = ioremap(rmu_regs.start, resource_size(&rmu_regs)); + if (!rmu_regs_win) { + dev_err(&dev->dev, "Unable to map rmu register window\n"); rc = -ENOMEM; - goto err_port; + goto err_rmu; + } + for_each_compatible_node(np, NULL, "fsl,srio-msg-unit") { + rmu_np[tmp] = np; + tmp++; } - port->index = 0; - priv = kzalloc(sizeof(struct rio_priv), GFP_KERNEL); - if (!priv) { - printk(KERN_ERR "Can't alloc memory for 'priv'\n"); + /*set up doobell node*/ + np = of_find_compatible_node(NULL, NULL, "fsl,srio-dbell-unit"); + if (!np) { + rc = -ENODEV; + goto err_dbell; + } + dbell = kzalloc(sizeof(struct fsl_rio_dbell), GFP_KERNEL); + if (!(dbell)) { + dev_err(&dev->dev, "Can't alloc memory for 'fsl_rio_dbell'\n"); rc = -ENOMEM; - goto err_priv; + goto err_dbell; } + dbell->dev = &dev->dev; + dbell->bellirq = irq_of_parse_and_map(np, 1); + dev_info(&dev->dev, "bellirq: %d\n", dbell->bellirq); - INIT_LIST_HEAD(&port->dbells); - port->iores.start = law_start; - port->iores.end = law_start + law_size - 1; - port->iores.flags = IORESOURCE_MEM; - port->iores.name = "rio_io_win"; - - if (request_resource(&iomem_resource, &port->iores) < 0) { - dev_err(&dev->dev, "RIO: Error requesting master port region" - " 0x%016llx-0x%016llx\n", - (u64)port->iores.start, (u64)port->iores.end); - rc = -ENOMEM; - goto err_res; + aw = of_n_addr_cells(np); + dt_range = of_get_property(np, "reg", &rlen); + if (!dt_range) { + pr_err("%s: unable to find 'reg' property\n", + np->full_name); + rc = -ENOMEM; + goto err_pw; } + range_start = of_read_number(dt_range, aw); + dbell->dbell_regs = (struct rio_dbell_regs *)(rmu_regs_win + + (u32)range_start); - priv->pwirq = irq_of_parse_and_map(dev->dev.of_node, 0); - priv->bellirq = irq_of_parse_and_map(dev->dev.of_node, 2); - priv->txirq = irq_of_parse_and_map(dev->dev.of_node, 3); - priv->rxirq = irq_of_parse_and_map(dev->dev.of_node, 4); - dev_info(&dev->dev, "pwirq: %d, bellirq: %d, txirq: %d, rxirq %d\n", - priv->pwirq, priv->bellirq, priv->txirq, priv->rxirq); - - rio_init_dbell_res(&port->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff); - rio_init_mbox_res(&port->riores[RIO_INB_MBOX_RESOURCE], 0, 0); - rio_init_mbox_res(&port->riores[RIO_OUTB_MBOX_RESOURCE], 0, 0); - strcpy(port->name, "RIO0 mport"); - - priv->dev = &dev->dev; - - port->ops = ops; - port->priv = priv; - port->phys_efptr = 0x100; - - priv->regs_win = ioremap(regs.start, resource_size(®s)); - rio_regs_win = priv->regs_win; - - /* Probe the master port phy type */ - ccsr = in_be32(priv->regs_win + RIO_CCSR); - port->phy_type = (ccsr & 1) ? RIO_PHY_SERIAL : RIO_PHY_PARALLEL; - dev_info(&dev->dev, "RapidIO PHY type: %s\n", - (port->phy_type == RIO_PHY_PARALLEL) ? "parallel" : - ((port->phy_type == RIO_PHY_SERIAL) ? "serial" : - "unknown")); - /* Checking the port training status */ - if (in_be32((priv->regs_win + RIO_ESCSR)) & 1) { - dev_err(&dev->dev, "Port is not ready. " - "Try to restart connection...\n"); - switch (port->phy_type) { - case RIO_PHY_SERIAL: + /*set up port write node*/ + np = of_find_compatible_node(NULL, NULL, "fsl,srio-port-write-unit"); + if (!np) { + rc = -ENODEV; + goto err_pw; + } + pw = kzalloc(sizeof(struct fsl_rio_pw), GFP_KERNEL); + if (!(pw)) { + dev_err(&dev->dev, "Can't alloc memory for 'fsl_rio_pw'\n"); + rc = -ENOMEM; + goto err_pw; + } + pw->dev = &dev->dev; + pw->pwirq = irq_of_parse_and_map(np, 0); + dev_info(&dev->dev, "pwirq: %d\n", pw->pwirq); + aw = of_n_addr_cells(np); + dt_range = of_get_property(np, "reg", &rlen); + if (!dt_range) { + pr_err("%s: unable to find 'reg' property\n", + np->full_name); + rc = -ENOMEM; + goto err; + } + range_start = of_read_number(dt_range, aw); + pw->pw_regs = (struct rio_pw_regs *)(rmu_regs_win + (u32)range_start); + + /*set up ports node*/ + for_each_child_of_node(dev->dev.of_node, np) { + port_index = of_get_property(np, "cell-index", NULL); + if (!port_index) { + dev_err(&dev->dev, "Can't get %s property 'cell-index'\n", + np->full_name); + continue; + } + + dt_range = of_get_property(np, "ranges", &rlen); + if (!dt_range) { + dev_err(&dev->dev, "Can't get %s property 'ranges'\n", + np->full_name); + continue; + } + + /* Get node address wide */ + cell = of_get_property(np, "#address-cells", NULL); + if (cell) + aw = *cell; + else + aw = of_n_addr_cells(np); + /* Get node size wide */ + cell = of_get_property(np, "#size-cells", NULL); + if (cell) + sw = *cell; + else + sw = of_n_size_cells(np); + /* Get parent address wide wide */ + paw = of_n_addr_cells(np); + range_start = of_read_number(dt_range + aw, paw); + range_size = of_read_number(dt_range + aw + paw, sw); + + dev_info(&dev->dev, "%s: LAW start 0x%016llx, size 0x%016llx.\n", + np->full_name, range_start, range_size); + + port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL); + if (!port) + continue; + + i = *port_index - 1; + port->index = (unsigned char)i; + + priv = kzalloc(sizeof(struct rio_priv), GFP_KERNEL); + if (!priv) { + dev_err(&dev->dev, "Can't alloc memory for 'priv'\n"); + kfree(port); + continue; + } + + INIT_LIST_HEAD(&port->dbells); + port->iores.start = range_start; + port->iores.end = port->iores.start + range_size - 1; + port->iores.flags = IORESOURCE_MEM; + port->iores.name = "rio_io_win"; + + if (request_resource(&iomem_resource, &port->iores) < 0) { + dev_err(&dev->dev, "RIO: Error requesting master port region" + " 0x%016llx-0x%016llx\n", + (u64)port->iores.start, (u64)port->iores.end); + kfree(priv); + kfree(port); + continue; + } + sprintf(port->name, "RIO mport %d", i); + + priv->dev = &dev->dev; + port->ops = ops; + port->priv = priv; + port->phys_efptr = 0x100; + priv->regs_win = rio_regs_win; + + /* Probe the master port phy type */ + ccsr = in_be32(priv->regs_win + RIO_CCSR + i*0x20); + port->phy_type = (ccsr & 1) ? RIO_PHY_SERIAL : RIO_PHY_PARALLEL; + if (port->phy_type == RIO_PHY_PARALLEL) { + dev_err(&dev->dev, "RIO: Parallel PHY type, unsupported port type!\n"); + release_resource(&port->iores); + kfree(priv); + kfree(port); + continue; + } + dev_info(&dev->dev, "RapidIO PHY type: Serial\n"); + /* Checking the port training status */ + if (in_be32((priv->regs_win + RIO_ESCSR + i*0x20)) & 1) { + dev_err(&dev->dev, "Port %d is not ready. " + "Try to restart connection...\n", i); /* Disable ports */ - out_be32(priv->regs_win + RIO_CCSR, 0); + out_be32(priv->regs_win + + RIO_CCSR + i*0x20, 0); /* Set 1x lane */ - setbits32(priv->regs_win + RIO_CCSR, 0x02000000); + setbits32(priv->regs_win + + RIO_CCSR + i*0x20, 0x02000000); /* Enable ports */ - setbits32(priv->regs_win + RIO_CCSR, 0x00600000); - break; - case RIO_PHY_PARALLEL: - /* Disable ports */ - out_be32(priv->regs_win + RIO_CCSR, 0x22000000); - /* Enable ports */ - out_be32(priv->regs_win + RIO_CCSR, 0x44000000); - break; - } - msleep(100); - if (in_be32((priv->regs_win + RIO_ESCSR)) & 1) { - dev_err(&dev->dev, "Port restart failed.\n"); - rc = -ENOLINK; - goto err; + setbits32(priv->regs_win + + RIO_CCSR + i*0x20, 0x00600000); + msleep(100); + if (in_be32((priv->regs_win + + RIO_ESCSR + i*0x20)) & 1) { + dev_err(&dev->dev, + "Port %d restart failed.\n", i); + release_resource(&port->iores); + kfree(priv); + kfree(port); + continue; + } + dev_info(&dev->dev, "Port %d restart success!\n", i); } - dev_info(&dev->dev, "Port restart success!\n"); - } - fsl_rio_info(&dev->dev, ccsr); + fsl_rio_info(&dev->dev, ccsr); - port->sys_size = (in_be32((priv->regs_win + RIO_PEF_CAR)) + port->sys_size = (in_be32((priv->regs_win + RIO_PEF_CAR)) & RIO_PEF_CTLS) >> 4; - dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n", - port->sys_size ? 65536 : 256); + dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n", + port->sys_size ? 65536 : 256); + + if (rio_register_mport(port)) { + release_resource(&port->iores); + kfree(priv); + kfree(port); + continue; + } + if (port->host_deviceid >= 0) + out_be32(priv->regs_win + RIO_GCCSR, RIO_PORT_GEN_HOST | + RIO_PORT_GEN_MASTER | RIO_PORT_GEN_DISCOVERED); + else + out_be32(priv->regs_win + RIO_GCCSR, + RIO_PORT_GEN_MASTER); + + priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win + + ((i == 0) ? RIO_ATMU_REGS_PORT1_OFFSET : + RIO_ATMU_REGS_PORT2_OFFSET)); - if (rio_register_mport(port)) + priv->maint_atmu_regs = priv->atmu_regs + 1; + + /* Set to receive any dist ID for serial RapidIO controller. */ + if (port->phy_type == RIO_PHY_SERIAL) + out_be32((priv->regs_win + + RIO_ISR_AACR + i*0x80), RIO_ISR_AACR_AA); + + /* Configure maintenance transaction window */ + out_be32(&priv->maint_atmu_regs->rowbar, + port->iores.start >> 12); + out_be32(&priv->maint_atmu_regs->rowar, + 0x80077000 | (ilog2(RIO_MAINT_WIN_SIZE) - 1)); + + priv->maint_win = ioremap(port->iores.start, + RIO_MAINT_WIN_SIZE); + + rio_law_start = range_start; + + fsl_rio_setup_rmu(port, rmu_np[i]); + + dbell->mport[i] = port; + + active_ports++; + } + + if (!active_ports) { + rc = -ENOLINK; goto err; + } - if (port->host_deviceid >= 0) - out_be32(priv->regs_win + RIO_GCCSR, RIO_PORT_GEN_HOST | - RIO_PORT_GEN_MASTER | RIO_PORT_GEN_DISCOVERED); - else - out_be32(priv->regs_win + RIO_GCCSR, 0x00000000); - - priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win - + RIO_ATMU_REGS_OFFSET); - priv->maint_atmu_regs = priv->atmu_regs + 1; - priv->dbell_atmu_regs = priv->atmu_regs + 2; - priv->msg_regs = (struct rio_msg_regs *)(priv->regs_win + - ((port->phy_type == RIO_PHY_SERIAL) ? - RIO_S_MSG_REGS_OFFSET : RIO_P_MSG_REGS_OFFSET)); - - /* Set to receive any dist ID for serial RapidIO controller. */ - if (port->phy_type == RIO_PHY_SERIAL) - out_be32((priv->regs_win + RIO_ISR_AACR), RIO_ISR_AACR_AA); - - /* Configure maintenance transaction window */ - out_be32(&priv->maint_atmu_regs->rowbar, law_start >> 12); - out_be32(&priv->maint_atmu_regs->rowar, - 0x80077000 | (ilog2(RIO_MAINT_WIN_SIZE) - 1)); - - priv->maint_win = ioremap(law_start, RIO_MAINT_WIN_SIZE); - - /* Configure outbound doorbell window */ - out_be32(&priv->dbell_atmu_regs->rowbar, - (law_start + RIO_MAINT_WIN_SIZE) >> 12); - out_be32(&priv->dbell_atmu_regs->rowar, 0x8004200b); /* 4k */ - fsl_rio_doorbell_init(port); - fsl_rio_port_write_init(port); + fsl_rio_doorbell_init(dbell); + fsl_rio_port_write_init(pw); return 0; err: - iounmap(priv->regs_win); -err_res: - kfree(priv); -err_priv: - kfree(port); -err_port: + kfree(pw); +err_pw: + kfree(dbell); +err_dbell: + iounmap(rmu_regs_win); +err_rmu: kfree(ops); err_ops: + iounmap(rio_regs_win); +err_rio_regs: return rc; } @@ -1630,7 +654,7 @@ static int __devinit fsl_of_rio_rpn_probe(struct platform_device *dev) static const struct of_device_id fsl_of_rio_rpn_ids[] = { { - .compatible = "fsl,rapidio-delta", + .compatible = "fsl,srio", }, {}, }; diff --git a/arch/powerpc/sysdev/fsl_rio.h b/arch/powerpc/sysdev/fsl_rio.h new file mode 100644 index 000000000000..ae8e27405a0d --- /dev/null +++ b/arch/powerpc/sysdev/fsl_rio.h @@ -0,0 +1,135 @@ +/* + * Freescale MPC85xx/MPC86xx RapidIO support + * + * Copyright 2009 Sysgo AG + * Thomas Moll <thomas.moll@sysgo.com> + * - fixed maintenance access routines, check for aligned access + * + * Copyright 2009 Integrated Device Technology, Inc. + * Alex Bounine <alexandre.bounine@idt.com> + * - Added Port-Write message handling + * - Added Machine Check exception handling + * + * Copyright (C) 2007, 2008, 2010, 2011 Freescale Semiconductor, Inc. + * Zhang Wei <wei.zhang@freescale.com> + * Lian Minghuan-B31939 <Minghuan.Lian@freescale.com> + * Liu Gang <Gang.Liu@freescale.com> + * + * Copyright 2005 MontaVista Software, Inc. + * Matt Porter <mporter@kernel.crashing.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef __FSL_RIO_H +#define __FSL_RIO_H + +#include <linux/rio.h> +#include <linux/rio_drv.h> +#include <linux/kfifo.h> + +#define RIO_REGS_WIN(mport) (((struct rio_priv *)(mport->priv))->regs_win) + +#define RIO_MAINT_WIN_SIZE 0x400000 +#define RIO_LTLEDCSR 0x0608 + +#define DOORBELL_ROWAR_EN 0x80000000 +#define DOORBELL_ROWAR_TFLOWLV 0x08000000 /* highest priority level */ +#define DOORBELL_ROWAR_PCI 0x02000000 /* PCI window */ +#define DOORBELL_ROWAR_NREAD 0x00040000 /* NREAD */ +#define DOORBELL_ROWAR_MAINTRD 0x00070000 /* maintenance read */ +#define DOORBELL_ROWAR_RES 0x00002000 /* wrtpy: reserverd */ +#define DOORBELL_ROWAR_MAINTWD 0x00007000 +#define DOORBELL_ROWAR_SIZE 0x0000000b /* window size is 4k */ + +#define RIO_ATMU_REGS_PORT1_OFFSET 0x10c00 +#define RIO_ATMU_REGS_PORT2_OFFSET 0x10e00 +#define RIO_S_DBELL_REGS_OFFSET 0x13400 +#define RIO_S_PW_REGS_OFFSET 0x134e0 +#define RIO_ATMU_REGS_DBELL_OFFSET 0x10C40 + +#define MAX_MSG_UNIT_NUM 2 +#define MAX_PORT_NUM 4 + +struct rio_atmu_regs { + u32 rowtar; + u32 rowtear; + u32 rowbar; + u32 pad1; + u32 rowar; + u32 pad2[3]; +}; + +struct rio_dbell_ring { + void *virt; + dma_addr_t phys; +}; + +struct rio_port_write_msg { + void *virt; + dma_addr_t phys; + u32 msg_count; + u32 err_count; + u32 discard_count; +}; + +struct fsl_rio_dbell { + struct rio_mport *mport[MAX_PORT_NUM]; + struct device *dev; + struct rio_dbell_regs __iomem *dbell_regs; + struct rio_dbell_ring dbell_ring; + int bellirq; +}; + +struct fsl_rio_pw { + struct device *dev; + struct rio_pw_regs __iomem *pw_regs; + struct rio_port_write_msg port_write_msg; + int pwirq; + struct work_struct pw_work; + struct kfifo pw_fifo; + spinlock_t pw_fifo_lock; +}; + +struct rio_priv { + struct device *dev; + void __iomem *regs_win; + struct rio_atmu_regs __iomem *atmu_regs; + struct rio_atmu_regs __iomem *maint_atmu_regs; + void __iomem *maint_win; + void *rmm_handle; /* RapidIO message manager(unit) Handle */ +}; + +extern void __iomem *rio_regs_win; +extern void __iomem *rmu_regs_win; + +extern resource_size_t rio_law_start; + +extern struct fsl_rio_dbell *dbell; +extern struct fsl_rio_pw *pw; + +extern int fsl_rio_setup_rmu(struct rio_mport *mport, + struct device_node *node); +extern int fsl_rio_port_write_init(struct fsl_rio_pw *pw); +extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable); +extern void fsl_rio_port_error_handler(int offset); +extern int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell); + +extern int fsl_rio_doorbell_send(struct rio_mport *mport, + int index, u16 destid, u16 data); +extern int fsl_add_outb_message(struct rio_mport *mport, + struct rio_dev *rdev, + int mbox, void *buffer, size_t len); +extern int fsl_open_outb_mbox(struct rio_mport *mport, + void *dev_id, int mbox, int entries); +extern void fsl_close_outb_mbox(struct rio_mport *mport, int mbox); +extern int fsl_open_inb_mbox(struct rio_mport *mport, + void *dev_id, int mbox, int entries); +extern void fsl_close_inb_mbox(struct rio_mport *mport, int mbox); +extern int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf); +extern void *fsl_get_inb_message(struct rio_mport *mport, int mbox); + +#endif diff --git a/arch/powerpc/sysdev/fsl_rmu.c b/arch/powerpc/sysdev/fsl_rmu.c new file mode 100644 index 000000000000..15485789e9db --- /dev/null +++ b/arch/powerpc/sysdev/fsl_rmu.c @@ -0,0 +1,1104 @@ +/* + * Freescale MPC85xx/MPC86xx RapidIO RMU support + * + * Copyright 2009 Sysgo AG + * Thomas Moll <thomas.moll@sysgo.com> + * - fixed maintenance access routines, check for aligned access + * + * Copyright 2009 Integrated Device Technology, Inc. + * Alex Bounine <alexandre.bounine@idt.com> + * - Added Port-Write message handling + * - Added Machine Check exception handling + * + * Copyright (C) 2007, 2008, 2010, 2011 Freescale Semiconductor, Inc. + * Zhang Wei <wei.zhang@freescale.com> + * Lian Minghuan-B31939 <Minghuan.Lian@freescale.com> + * Liu Gang <Gang.Liu@freescale.com> + * + * Copyright 2005 MontaVista Software, Inc. + * Matt Porter <mporter@kernel.crashing.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/types.h> +#include <linux/dma-mapping.h> +#include <linux/interrupt.h> +#include <linux/of_platform.h> +#include <linux/slab.h> + +#include "fsl_rio.h" + +#define GET_RMM_HANDLE(mport) \ + (((struct rio_priv *)(mport->priv))->rmm_handle) + +/* RapidIO definition irq, which read from OF-tree */ +#define IRQ_RIO_PW(m) (((struct fsl_rio_pw *)(m))->pwirq) +#define IRQ_RIO_BELL(m) (((struct fsl_rio_dbell *)(m))->bellirq) +#define IRQ_RIO_TX(m) (((struct fsl_rmu *)(GET_RMM_HANDLE(m)))->txirq) +#define IRQ_RIO_RX(m) (((struct fsl_rmu *)(GET_RMM_HANDLE(m)))->rxirq) + +#define RIO_MIN_TX_RING_SIZE 2 +#define RIO_MAX_TX_RING_SIZE 2048 +#define RIO_MIN_RX_RING_SIZE 2 +#define RIO_MAX_RX_RING_SIZE 2048 + +#define RIO_IPWMR_SEN 0x00100000 +#define RIO_IPWMR_QFIE 0x00000100 +#define RIO_IPWMR_EIE 0x00000020 +#define RIO_IPWMR_CQ 0x00000002 +#define RIO_IPWMR_PWE 0x00000001 + +#define RIO_IPWSR_QF 0x00100000 +#define RIO_IPWSR_TE 0x00000080 +#define RIO_IPWSR_QFI 0x00000010 +#define RIO_IPWSR_PWD 0x00000008 +#define RIO_IPWSR_PWB 0x00000004 + +#define RIO_EPWISR 0x10010 +/* EPWISR Error match value */ +#define RIO_EPWISR_PINT1 0x80000000 +#define RIO_EPWISR_PINT2 0x40000000 +#define RIO_EPWISR_MU 0x00000002 +#define RIO_EPWISR_PW 0x00000001 + +#define IPWSR_CLEAR 0x98 +#define OMSR_CLEAR 0x1cb3 +#define IMSR_CLEAR 0x491 +#define IDSR_CLEAR 0x91 +#define ODSR_CLEAR 0x1c00 +#define LTLEECSR_ENABLE_ALL 0xFFC000FC +#define RIO_LTLEECSR 0x060c + +#define RIO_IM0SR 0x64 +#define RIO_IM1SR 0x164 +#define RIO_OM0SR 0x4 +#define RIO_OM1SR 0x104 + +#define RIO_DBELL_WIN_SIZE 0x1000 + +#define RIO_MSG_OMR_MUI 0x00000002 +#define RIO_MSG_OSR_TE 0x00000080 +#define RIO_MSG_OSR_QOI 0x00000020 +#define RIO_MSG_OSR_QFI 0x00000010 +#define RIO_MSG_OSR_MUB 0x00000004 +#define RIO_MSG_OSR_EOMI 0x00000002 +#define RIO_MSG_OSR_QEI 0x00000001 + +#define RIO_MSG_IMR_MI 0x00000002 +#define RIO_MSG_ISR_TE 0x00000080 +#define RIO_MSG_ISR_QFI 0x00000010 +#define RIO_MSG_ISR_DIQI 0x00000001 + +#define RIO_MSG_DESC_SIZE 32 +#define RIO_MSG_BUFFER_SIZE 4096 + +#define DOORBELL_DMR_DI 0x00000002 +#define DOORBELL_DSR_TE 0x00000080 +#define DOORBELL_DSR_QFI 0x00000010 +#define DOORBELL_DSR_DIQI 0x00000001 +#define DOORBELL_TID_OFFSET 0x02 +#define DOORBELL_SID_OFFSET 0x04 +#define DOORBELL_INFO_OFFSET 0x06 + +#define DOORBELL_MESSAGE_SIZE 0x08 +#define DBELL_SID(x) (*(u16 *)(x + DOORBELL_SID_OFFSET)) +#define DBELL_TID(x) (*(u16 *)(x + DOORBELL_TID_OFFSET)) +#define DBELL_INF(x) (*(u16 *)(x + DOORBELL_INFO_OFFSET)) + +struct rio_msg_regs { + u32 omr; + u32 osr; + u32 pad1; + u32 odqdpar; + u32 pad2; + u32 osar; + u32 odpr; + u32 odatr; + u32 odcr; + u32 pad3; + u32 odqepar; + u32 pad4[13]; + u32 imr; + u32 isr; + u32 pad5; + u32 ifqdpar; + u32 pad6; + u32 ifqepar; +}; + +struct rio_dbell_regs { + u32 odmr; + u32 odsr; + u32 pad1[4]; + u32 oddpr; + u32 oddatr; + u32 pad2[3]; + u32 odretcr; + u32 pad3[12]; + u32 dmr; + u32 dsr; + u32 pad4; + u32 dqdpar; + u32 pad5; + u32 dqepar; +}; + +struct rio_pw_regs { + u32 pwmr; + u32 pwsr; + u32 epwqbar; + u32 pwqbar; +}; + + +struct rio_tx_desc { + u32 pad1; + u32 saddr; + u32 dport; + u32 dattr; + u32 pad2; + u32 pad3; + u32 dwcnt; + u32 pad4; +}; + +struct rio_msg_tx_ring { + void *virt; + dma_addr_t phys; + void *virt_buffer[RIO_MAX_TX_RING_SIZE]; + dma_addr_t phys_buffer[RIO_MAX_TX_RING_SIZE]; + int tx_slot; + int size; + void *dev_id; +}; + +struct rio_msg_rx_ring { + void *virt; + dma_addr_t phys; + void *virt_buffer[RIO_MAX_RX_RING_SIZE]; + int rx_slot; + int size; + void *dev_id; +}; + +struct fsl_rmu { + struct rio_msg_regs __iomem *msg_regs; + struct rio_msg_tx_ring msg_tx_ring; + struct rio_msg_rx_ring msg_rx_ring; + int txirq; + int rxirq; +}; + +/** + * fsl_rio_tx_handler - MPC85xx outbound message interrupt handler + * @irq: Linux interrupt number + * @dev_instance: Pointer to interrupt-specific data + * + * Handles outbound message interrupts. Executes a register outbound + * mailbox event handler and acks the interrupt occurrence. + */ +static irqreturn_t +fsl_rio_tx_handler(int irq, void *dev_instance) +{ + int osr; + struct rio_mport *port = (struct rio_mport *)dev_instance; + struct fsl_rmu *rmu = GET_RMM_HANDLE(port); + + osr = in_be32(&rmu->msg_regs->osr); + + if (osr & RIO_MSG_OSR_TE) { + pr_info("RIO: outbound message transmission error\n"); + out_be32(&rmu->msg_regs->osr, RIO_MSG_OSR_TE); + goto out; + } + + if (osr & RIO_MSG_OSR_QOI) { + pr_info("RIO: outbound message queue overflow\n"); + out_be32(&rmu->msg_regs->osr, RIO_MSG_OSR_QOI); + goto out; + } + + if (osr & RIO_MSG_OSR_EOMI) { + u32 dqp = in_be32(&rmu->msg_regs->odqdpar); + int slot = (dqp - rmu->msg_tx_ring.phys) >> 5; + if (port->outb_msg[0].mcback != NULL) { + port->outb_msg[0].mcback(port, rmu->msg_tx_ring.dev_id, + -1, + slot); + } + /* Ack the end-of-message interrupt */ + out_be32(&rmu->msg_regs->osr, RIO_MSG_OSR_EOMI); + } + +out: + return IRQ_HANDLED; +} + +/** + * fsl_rio_rx_handler - MPC85xx inbound message interrupt handler + * @irq: Linux interrupt number + * @dev_instance: Pointer to interrupt-specific data + * + * Handles inbound message interrupts. Executes a registered inbound + * mailbox event handler and acks the interrupt occurrence. + */ +static irqreturn_t +fsl_rio_rx_handler(int irq, void *dev_instance) +{ + int isr; + struct rio_mport *port = (struct rio_mport *)dev_instance; + struct fsl_rmu *rmu = GET_RMM_HANDLE(port); + + isr = in_be32(&rmu->msg_regs->isr); + + if (isr & RIO_MSG_ISR_TE) { + pr_info("RIO: inbound message reception error\n"); + out_be32((void *)&rmu->msg_regs->isr, RIO_MSG_ISR_TE); + goto out; + } + + /* XXX Need to check/dispatch until queue empty */ + if (isr & RIO_MSG_ISR_DIQI) { + /* + * Can receive messages for any mailbox/letter to that + * mailbox destination. So, make the callback with an + * unknown/invalid mailbox number argument. + */ + if (port->inb_msg[0].mcback != NULL) + port->inb_msg[0].mcback(port, rmu->msg_rx_ring.dev_id, + -1, + -1); + + /* Ack the queueing interrupt */ + out_be32(&rmu->msg_regs->isr, RIO_MSG_ISR_DIQI); + } + +out: + return IRQ_HANDLED; +} + +/** + * fsl_rio_dbell_handler - MPC85xx doorbell interrupt handler + * @irq: Linux interrupt number + * @dev_instance: Pointer to interrupt-specific data + * + * Handles doorbell interrupts. Parses a list of registered + * doorbell event handlers and executes a matching event handler. + */ +static irqreturn_t +fsl_rio_dbell_handler(int irq, void *dev_instance) +{ + int dsr; + struct fsl_rio_dbell *fsl_dbell = (struct fsl_rio_dbell *)dev_instance; + int i; + + dsr = in_be32(&fsl_dbell->dbell_regs->dsr); + + if (dsr & DOORBELL_DSR_TE) { + pr_info("RIO: doorbell reception error\n"); + out_be32(&fsl_dbell->dbell_regs->dsr, DOORBELL_DSR_TE); + goto out; + } + + if (dsr & DOORBELL_DSR_QFI) { + pr_info("RIO: doorbell queue full\n"); + out_be32(&fsl_dbell->dbell_regs->dsr, DOORBELL_DSR_QFI); + } + + /* XXX Need to check/dispatch until queue empty */ + if (dsr & DOORBELL_DSR_DIQI) { + u32 dmsg = + (u32) fsl_dbell->dbell_ring.virt + + (in_be32(&fsl_dbell->dbell_regs->dqdpar) & 0xfff); + struct rio_dbell *dbell; + int found = 0; + + pr_debug + ("RIO: processing doorbell," + " sid %2.2x tid %2.2x info %4.4x\n", + DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg)); + + for (i = 0; i < MAX_PORT_NUM; i++) { + if (fsl_dbell->mport[i]) { + list_for_each_entry(dbell, + &fsl_dbell->mport[i]->dbells, node) { + if ((dbell->res->start + <= DBELL_INF(dmsg)) + && (dbell->res->end + >= DBELL_INF(dmsg))) { + found = 1; + break; + } + } + if (found && dbell->dinb) { + dbell->dinb(fsl_dbell->mport[i], + dbell->dev_id, DBELL_SID(dmsg), + DBELL_TID(dmsg), + DBELL_INF(dmsg)); + break; + } + } + } + + if (!found) { + pr_debug + ("RIO: spurious doorbell," + " sid %2.2x tid %2.2x info %4.4x\n", + DBELL_SID(dmsg), DBELL_TID(dmsg), + DBELL_INF(dmsg)); + } + setbits32(&fsl_dbell->dbell_regs->dmr, DOORBELL_DMR_DI); + out_be32(&fsl_dbell->dbell_regs->dsr, DOORBELL_DSR_DIQI); + } + +out: + return IRQ_HANDLED; +} + +void msg_unit_error_handler(void) +{ + + /*XXX: Error recovery is not implemented, we just clear errors */ + out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); + + out_be32((u32 *)(rmu_regs_win + RIO_IM0SR), IMSR_CLEAR); + out_be32((u32 *)(rmu_regs_win + RIO_IM1SR), IMSR_CLEAR); + out_be32((u32 *)(rmu_regs_win + RIO_OM0SR), OMSR_CLEAR); + out_be32((u32 *)(rmu_regs_win + RIO_OM1SR), OMSR_CLEAR); + + out_be32(&dbell->dbell_regs->odsr, ODSR_CLEAR); + out_be32(&dbell->dbell_regs->dsr, IDSR_CLEAR); + + out_be32(&pw->pw_regs->pwsr, IPWSR_CLEAR); +} + +/** + * fsl_rio_port_write_handler - MPC85xx port write interrupt handler + * @irq: Linux interrupt number + * @dev_instance: Pointer to interrupt-specific data + * + * Handles port write interrupts. Parses a list of registered + * port write event handlers and executes a matching event handler. + */ +static irqreturn_t +fsl_rio_port_write_handler(int irq, void *dev_instance) +{ + u32 ipwmr, ipwsr; + struct fsl_rio_pw *pw = (struct fsl_rio_pw *)dev_instance; + u32 epwisr, tmp; + + epwisr = in_be32(rio_regs_win + RIO_EPWISR); + if (!(epwisr & RIO_EPWISR_PW)) + goto pw_done; + + ipwmr = in_be32(&pw->pw_regs->pwmr); + ipwsr = in_be32(&pw->pw_regs->pwsr); + +#ifdef DEBUG_PW + pr_debug("PW Int->IPWMR: 0x%08x IPWSR: 0x%08x (", ipwmr, ipwsr); + if (ipwsr & RIO_IPWSR_QF) + pr_debug(" QF"); + if (ipwsr & RIO_IPWSR_TE) + pr_debug(" TE"); + if (ipwsr & RIO_IPWSR_QFI) + pr_debug(" QFI"); + if (ipwsr & RIO_IPWSR_PWD) + pr_debug(" PWD"); + if (ipwsr & RIO_IPWSR_PWB) + pr_debug(" PWB"); + pr_debug(" )\n"); +#endif + /* Schedule deferred processing if PW was received */ + if (ipwsr & RIO_IPWSR_QFI) { + /* Save PW message (if there is room in FIFO), + * otherwise discard it. + */ + if (kfifo_avail(&pw->pw_fifo) >= RIO_PW_MSG_SIZE) { + pw->port_write_msg.msg_count++; + kfifo_in(&pw->pw_fifo, pw->port_write_msg.virt, + RIO_PW_MSG_SIZE); + } else { + pw->port_write_msg.discard_count++; + pr_debug("RIO: ISR Discarded Port-Write Msg(s) (%d)\n", + pw->port_write_msg.discard_count); + } + /* Clear interrupt and issue Clear Queue command. This allows + * another port-write to be received. + */ + out_be32(&pw->pw_regs->pwsr, RIO_IPWSR_QFI); + out_be32(&pw->pw_regs->pwmr, ipwmr | RIO_IPWMR_CQ); + + schedule_work(&pw->pw_work); + } + + if ((ipwmr & RIO_IPWMR_EIE) && (ipwsr & RIO_IPWSR_TE)) { + pw->port_write_msg.err_count++; + pr_debug("RIO: Port-Write Transaction Err (%d)\n", + pw->port_write_msg.err_count); + /* Clear Transaction Error: port-write controller should be + * disabled when clearing this error + */ + out_be32(&pw->pw_regs->pwmr, ipwmr & ~RIO_IPWMR_PWE); + out_be32(&pw->pw_regs->pwsr, RIO_IPWSR_TE); + out_be32(&pw->pw_regs->pwmr, ipwmr); + } + + if (ipwsr & RIO_IPWSR_PWD) { + pw->port_write_msg.discard_count++; + pr_debug("RIO: Port Discarded Port-Write Msg(s) (%d)\n", + pw->port_write_msg.discard_count); + out_be32(&pw->pw_regs->pwsr, RIO_IPWSR_PWD); + } + +pw_done: + if (epwisr & RIO_EPWISR_PINT1) { + tmp = in_be32(rio_regs_win + RIO_LTLEDCSR); + pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); + fsl_rio_port_error_handler(0); + } + + if (epwisr & RIO_EPWISR_PINT2) { + tmp = in_be32(rio_regs_win + RIO_LTLEDCSR); + pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); + fsl_rio_port_error_handler(1); + } + + if (epwisr & RIO_EPWISR_MU) { + tmp = in_be32(rio_regs_win + RIO_LTLEDCSR); + pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); + msg_unit_error_handler(); + } + + return IRQ_HANDLED; +} + +static void fsl_pw_dpc(struct work_struct *work) +{ + struct fsl_rio_pw *pw = container_of(work, struct fsl_rio_pw, pw_work); + u32 msg_buffer[RIO_PW_MSG_SIZE/sizeof(u32)]; + + /* + * Process port-write messages + */ + while (kfifo_out_spinlocked(&pw->pw_fifo, (unsigned char *)msg_buffer, + RIO_PW_MSG_SIZE, &pw->pw_fifo_lock)) { + /* Process one message */ +#ifdef DEBUG_PW + { + u32 i; + pr_debug("%s : Port-Write Message:", __func__); + for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32); i++) { + if ((i%4) == 0) + pr_debug("\n0x%02x: 0x%08x", i*4, + msg_buffer[i]); + else + pr_debug(" 0x%08x", msg_buffer[i]); + } + pr_debug("\n"); + } +#endif + /* Pass the port-write message to RIO core for processing */ + rio_inb_pwrite_handler((union rio_pw_msg *)msg_buffer); + } +} + +/** + * fsl_rio_pw_enable - enable/disable port-write interface init + * @mport: Master port implementing the port write unit + * @enable: 1=enable; 0=disable port-write message handling + */ +int fsl_rio_pw_enable(struct rio_mport *mport, int enable) +{ + u32 rval; + + rval = in_be32(&pw->pw_regs->pwmr); + + if (enable) + rval |= RIO_IPWMR_PWE; + else + rval &= ~RIO_IPWMR_PWE; + + out_be32(&pw->pw_regs->pwmr, rval); + + return 0; +} + +/** + * fsl_rio_port_write_init - MPC85xx port write interface init + * @mport: Master port implementing the port write unit + * + * Initializes port write unit hardware and DMA buffer + * ring. Called from fsl_rio_setup(). Returns %0 on success + * or %-ENOMEM on failure. + */ + +int fsl_rio_port_write_init(struct fsl_rio_pw *pw) +{ + int rc = 0; + + /* Following configurations require a disabled port write controller */ + out_be32(&pw->pw_regs->pwmr, + in_be32(&pw->pw_regs->pwmr) & ~RIO_IPWMR_PWE); + + /* Initialize port write */ + pw->port_write_msg.virt = dma_alloc_coherent(pw->dev, + RIO_PW_MSG_SIZE, + &pw->port_write_msg.phys, GFP_KERNEL); + if (!pw->port_write_msg.virt) { + pr_err("RIO: unable allocate port write queue\n"); + return -ENOMEM; + } + + pw->port_write_msg.err_count = 0; + pw->port_write_msg.discard_count = 0; + + /* Point dequeue/enqueue pointers at first entry */ + out_be32(&pw->pw_regs->epwqbar, 0); + out_be32(&pw->pw_regs->pwqbar, (u32) pw->port_write_msg.phys); + + pr_debug("EIPWQBAR: 0x%08x IPWQBAR: 0x%08x\n", + in_be32(&pw->pw_regs->epwqbar), + in_be32(&pw->pw_regs->pwqbar)); + + /* Clear interrupt status IPWSR */ + out_be32(&pw->pw_regs->pwsr, + (RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD)); + + /* Configure port write contoller for snooping enable all reporting, + clear queue full */ + out_be32(&pw->pw_regs->pwmr, + RIO_IPWMR_SEN | RIO_IPWMR_QFIE | RIO_IPWMR_EIE | RIO_IPWMR_CQ); + + + /* Hook up port-write handler */ + rc = request_irq(IRQ_RIO_PW(pw), fsl_rio_port_write_handler, + IRQF_SHARED, "port-write", (void *)pw); + if (rc < 0) { + pr_err("MPC85xx RIO: unable to request inbound doorbell irq"); + goto err_out; + } + /* Enable Error Interrupt */ + out_be32((u32 *)(rio_regs_win + RIO_LTLEECSR), LTLEECSR_ENABLE_ALL); + + INIT_WORK(&pw->pw_work, fsl_pw_dpc); + spin_lock_init(&pw->pw_fifo_lock); + if (kfifo_alloc(&pw->pw_fifo, RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) { + pr_err("FIFO allocation failed\n"); + rc = -ENOMEM; + goto err_out_irq; + } + + pr_debug("IPWMR: 0x%08x IPWSR: 0x%08x\n", + in_be32(&pw->pw_regs->pwmr), + in_be32(&pw->pw_regs->pwsr)); + + return rc; + +err_out_irq: + free_irq(IRQ_RIO_PW(pw), (void *)pw); +err_out: + dma_free_coherent(pw->dev, RIO_PW_MSG_SIZE, + pw->port_write_msg.virt, + pw->port_write_msg.phys); + return rc; +} + +/** + * fsl_rio_doorbell_send - Send a MPC85xx doorbell message + * @mport: RapidIO master port info + * @index: ID of RapidIO interface + * @destid: Destination ID of target device + * @data: 16-bit info field of RapidIO doorbell message + * + * Sends a MPC85xx doorbell message. Returns %0 on success or + * %-EINVAL on failure. + */ +int fsl_rio_doorbell_send(struct rio_mport *mport, + int index, u16 destid, u16 data) +{ + pr_debug("fsl_doorbell_send: index %d destid %4.4x data %4.4x\n", + index, destid, data); + + /* In the serial version silicons, such as MPC8548, MPC8641, + * below operations is must be. + */ + out_be32(&dbell->dbell_regs->odmr, 0x00000000); + out_be32(&dbell->dbell_regs->odretcr, 0x00000004); + out_be32(&dbell->dbell_regs->oddpr, destid << 16); + out_be32(&dbell->dbell_regs->oddatr, (index << 20) | data); + out_be32(&dbell->dbell_regs->odmr, 0x00000001); + + return 0; +} + +/** + * fsl_add_outb_message - Add message to the MPC85xx outbound message queue + * @mport: Master port with outbound message queue + * @rdev: Target of outbound message + * @mbox: Outbound mailbox + * @buffer: Message to add to outbound queue + * @len: Length of message + * + * Adds the @buffer message to the MPC85xx outbound message queue. Returns + * %0 on success or %-EINVAL on failure. + */ +int +fsl_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox, + void *buffer, size_t len) +{ + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + u32 omr; + struct rio_tx_desc *desc = (struct rio_tx_desc *)rmu->msg_tx_ring.virt + + rmu->msg_tx_ring.tx_slot; + int ret = 0; + + pr_debug("RIO: fsl_add_outb_message(): destid %4.4x mbox %d buffer " \ + "%8.8x len %8.8x\n", rdev->destid, mbox, (int)buffer, len); + if ((len < 8) || (len > RIO_MAX_MSG_SIZE)) { + ret = -EINVAL; + goto out; + } + + /* Copy and clear rest of buffer */ + memcpy(rmu->msg_tx_ring.virt_buffer[rmu->msg_tx_ring.tx_slot], buffer, + len); + if (len < (RIO_MAX_MSG_SIZE - 4)) + memset(rmu->msg_tx_ring.virt_buffer[rmu->msg_tx_ring.tx_slot] + + len, 0, RIO_MAX_MSG_SIZE - len); + + /* Set mbox field for message, and set destid */ + desc->dport = (rdev->destid << 16) | (mbox & 0x3); + + /* Enable EOMI interrupt and priority */ + desc->dattr = 0x28000000 | ((mport->index) << 20); + + /* Set transfer size aligned to next power of 2 (in double words) */ + desc->dwcnt = is_power_of_2(len) ? len : 1 << get_bitmask_order(len); + + /* Set snooping and source buffer address */ + desc->saddr = 0x00000004 + | rmu->msg_tx_ring.phys_buffer[rmu->msg_tx_ring.tx_slot]; + + /* Increment enqueue pointer */ + omr = in_be32(&rmu->msg_regs->omr); + out_be32(&rmu->msg_regs->omr, omr | RIO_MSG_OMR_MUI); + + /* Go to next descriptor */ + if (++rmu->msg_tx_ring.tx_slot == rmu->msg_tx_ring.size) + rmu->msg_tx_ring.tx_slot = 0; + +out: + return ret; +} + +/** + * fsl_open_outb_mbox - Initialize MPC85xx outbound mailbox + * @mport: Master port implementing the outbound message unit + * @dev_id: Device specific pointer to pass on event + * @mbox: Mailbox to open + * @entries: Number of entries in the outbound mailbox ring + * + * Initializes buffer ring, request the outbound message interrupt, + * and enables the outbound message unit. Returns %0 on success and + * %-EINVAL or %-ENOMEM on failure. + */ +int +fsl_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) +{ + int i, j, rc = 0; + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + if ((entries < RIO_MIN_TX_RING_SIZE) || + (entries > RIO_MAX_TX_RING_SIZE) || (!is_power_of_2(entries))) { + rc = -EINVAL; + goto out; + } + + /* Initialize shadow copy ring */ + rmu->msg_tx_ring.dev_id = dev_id; + rmu->msg_tx_ring.size = entries; + + for (i = 0; i < rmu->msg_tx_ring.size; i++) { + rmu->msg_tx_ring.virt_buffer[i] = + dma_alloc_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, + &rmu->msg_tx_ring.phys_buffer[i], GFP_KERNEL); + if (!rmu->msg_tx_ring.virt_buffer[i]) { + rc = -ENOMEM; + for (j = 0; j < rmu->msg_tx_ring.size; j++) + if (rmu->msg_tx_ring.virt_buffer[j]) + dma_free_coherent(priv->dev, + RIO_MSG_BUFFER_SIZE, + rmu->msg_tx_ring. + virt_buffer[j], + rmu->msg_tx_ring. + phys_buffer[j]); + goto out; + } + } + + /* Initialize outbound message descriptor ring */ + rmu->msg_tx_ring.virt = dma_alloc_coherent(priv->dev, + rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE, + &rmu->msg_tx_ring.phys, GFP_KERNEL); + if (!rmu->msg_tx_ring.virt) { + rc = -ENOMEM; + goto out_dma; + } + memset(rmu->msg_tx_ring.virt, 0, + rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE); + rmu->msg_tx_ring.tx_slot = 0; + + /* Point dequeue/enqueue pointers at first entry in ring */ + out_be32(&rmu->msg_regs->odqdpar, rmu->msg_tx_ring.phys); + out_be32(&rmu->msg_regs->odqepar, rmu->msg_tx_ring.phys); + + /* Configure for snooping */ + out_be32(&rmu->msg_regs->osar, 0x00000004); + + /* Clear interrupt status */ + out_be32(&rmu->msg_regs->osr, 0x000000b3); + + /* Hook up outbound message handler */ + rc = request_irq(IRQ_RIO_TX(mport), fsl_rio_tx_handler, 0, + "msg_tx", (void *)mport); + if (rc < 0) + goto out_irq; + + /* + * Configure outbound message unit + * Snooping + * Interrupts (all enabled, except QEIE) + * Chaining mode + * Disable + */ + out_be32(&rmu->msg_regs->omr, 0x00100220); + + /* Set number of entries */ + out_be32(&rmu->msg_regs->omr, + in_be32(&rmu->msg_regs->omr) | + ((get_bitmask_order(entries) - 2) << 12)); + + /* Now enable the unit */ + out_be32(&rmu->msg_regs->omr, in_be32(&rmu->msg_regs->omr) | 0x1); + +out: + return rc; + +out_irq: + dma_free_coherent(priv->dev, + rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE, + rmu->msg_tx_ring.virt, rmu->msg_tx_ring.phys); + +out_dma: + for (i = 0; i < rmu->msg_tx_ring.size; i++) + dma_free_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, + rmu->msg_tx_ring.virt_buffer[i], + rmu->msg_tx_ring.phys_buffer[i]); + + return rc; +} + +/** + * fsl_close_outb_mbox - Shut down MPC85xx outbound mailbox + * @mport: Master port implementing the outbound message unit + * @mbox: Mailbox to close + * + * Disables the outbound message unit, free all buffers, and + * frees the outbound message interrupt. + */ +void fsl_close_outb_mbox(struct rio_mport *mport, int mbox) +{ + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + /* Disable inbound message unit */ + out_be32(&rmu->msg_regs->omr, 0); + + /* Free ring */ + dma_free_coherent(priv->dev, + rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE, + rmu->msg_tx_ring.virt, rmu->msg_tx_ring.phys); + + /* Free interrupt */ + free_irq(IRQ_RIO_TX(mport), (void *)mport); +} + +/** + * fsl_open_inb_mbox - Initialize MPC85xx inbound mailbox + * @mport: Master port implementing the inbound message unit + * @dev_id: Device specific pointer to pass on event + * @mbox: Mailbox to open + * @entries: Number of entries in the inbound mailbox ring + * + * Initializes buffer ring, request the inbound message interrupt, + * and enables the inbound message unit. Returns %0 on success + * and %-EINVAL or %-ENOMEM on failure. + */ +int +fsl_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) +{ + int i, rc = 0; + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + if ((entries < RIO_MIN_RX_RING_SIZE) || + (entries > RIO_MAX_RX_RING_SIZE) || (!is_power_of_2(entries))) { + rc = -EINVAL; + goto out; + } + + /* Initialize client buffer ring */ + rmu->msg_rx_ring.dev_id = dev_id; + rmu->msg_rx_ring.size = entries; + rmu->msg_rx_ring.rx_slot = 0; + for (i = 0; i < rmu->msg_rx_ring.size; i++) + rmu->msg_rx_ring.virt_buffer[i] = NULL; + + /* Initialize inbound message ring */ + rmu->msg_rx_ring.virt = dma_alloc_coherent(priv->dev, + rmu->msg_rx_ring.size * RIO_MAX_MSG_SIZE, + &rmu->msg_rx_ring.phys, GFP_KERNEL); + if (!rmu->msg_rx_ring.virt) { + rc = -ENOMEM; + goto out; + } + + /* Point dequeue/enqueue pointers at first entry in ring */ + out_be32(&rmu->msg_regs->ifqdpar, (u32) rmu->msg_rx_ring.phys); + out_be32(&rmu->msg_regs->ifqepar, (u32) rmu->msg_rx_ring.phys); + + /* Clear interrupt status */ + out_be32(&rmu->msg_regs->isr, 0x00000091); + + /* Hook up inbound message handler */ + rc = request_irq(IRQ_RIO_RX(mport), fsl_rio_rx_handler, 0, + "msg_rx", (void *)mport); + if (rc < 0) { + dma_free_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, + rmu->msg_tx_ring.virt_buffer[i], + rmu->msg_tx_ring.phys_buffer[i]); + goto out; + } + + /* + * Configure inbound message unit: + * Snooping + * 4KB max message size + * Unmask all interrupt sources + * Disable + */ + out_be32(&rmu->msg_regs->imr, 0x001b0060); + + /* Set number of queue entries */ + setbits32(&rmu->msg_regs->imr, (get_bitmask_order(entries) - 2) << 12); + + /* Now enable the unit */ + setbits32(&rmu->msg_regs->imr, 0x1); + +out: + return rc; +} + +/** + * fsl_close_inb_mbox - Shut down MPC85xx inbound mailbox + * @mport: Master port implementing the inbound message unit + * @mbox: Mailbox to close + * + * Disables the inbound message unit, free all buffers, and + * frees the inbound message interrupt. + */ +void fsl_close_inb_mbox(struct rio_mport *mport, int mbox) +{ + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + /* Disable inbound message unit */ + out_be32(&rmu->msg_regs->imr, 0); + + /* Free ring */ + dma_free_coherent(priv->dev, rmu->msg_rx_ring.size * RIO_MAX_MSG_SIZE, + rmu->msg_rx_ring.virt, rmu->msg_rx_ring.phys); + + /* Free interrupt */ + free_irq(IRQ_RIO_RX(mport), (void *)mport); +} + +/** + * fsl_add_inb_buffer - Add buffer to the MPC85xx inbound message queue + * @mport: Master port implementing the inbound message unit + * @mbox: Inbound mailbox number + * @buf: Buffer to add to inbound queue + * + * Adds the @buf buffer to the MPC85xx inbound message queue. Returns + * %0 on success or %-EINVAL on failure. + */ +int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf) +{ + int rc = 0; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + pr_debug("RIO: fsl_add_inb_buffer(), msg_rx_ring.rx_slot %d\n", + rmu->msg_rx_ring.rx_slot); + + if (rmu->msg_rx_ring.virt_buffer[rmu->msg_rx_ring.rx_slot]) { + printk(KERN_ERR + "RIO: error adding inbound buffer %d, buffer exists\n", + rmu->msg_rx_ring.rx_slot); + rc = -EINVAL; + goto out; + } + + rmu->msg_rx_ring.virt_buffer[rmu->msg_rx_ring.rx_slot] = buf; + if (++rmu->msg_rx_ring.rx_slot == rmu->msg_rx_ring.size) + rmu->msg_rx_ring.rx_slot = 0; + +out: + return rc; +} + +/** + * fsl_get_inb_message - Fetch inbound message from the MPC85xx message unit + * @mport: Master port implementing the inbound message unit + * @mbox: Inbound mailbox number + * + * Gets the next available inbound message from the inbound message queue. + * A pointer to the message is returned on success or NULL on failure. + */ +void *fsl_get_inb_message(struct rio_mport *mport, int mbox) +{ + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + u32 phys_buf, virt_buf; + void *buf = NULL; + int buf_idx; + + phys_buf = in_be32(&rmu->msg_regs->ifqdpar); + + /* If no more messages, then bail out */ + if (phys_buf == in_be32(&rmu->msg_regs->ifqepar)) + goto out2; + + virt_buf = (u32) rmu->msg_rx_ring.virt + (phys_buf + - rmu->msg_rx_ring.phys); + buf_idx = (phys_buf - rmu->msg_rx_ring.phys) / RIO_MAX_MSG_SIZE; + buf = rmu->msg_rx_ring.virt_buffer[buf_idx]; + + if (!buf) { + printk(KERN_ERR + "RIO: inbound message copy failed, no buffers\n"); + goto out1; + } + + /* Copy max message size, caller is expected to allocate that big */ + memcpy(buf, (void *)virt_buf, RIO_MAX_MSG_SIZE); + + /* Clear the available buffer */ + rmu->msg_rx_ring.virt_buffer[buf_idx] = NULL; + +out1: + setbits32(&rmu->msg_regs->imr, RIO_MSG_IMR_MI); + +out2: + return buf; +} + +/** + * fsl_rio_doorbell_init - MPC85xx doorbell interface init + * @mport: Master port implementing the inbound doorbell unit + * + * Initializes doorbell unit hardware and inbound DMA buffer + * ring. Called from fsl_rio_setup(). Returns %0 on success + * or %-ENOMEM on failure. + */ +int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell) +{ + int rc = 0; + + /* Initialize inbound doorbells */ + dbell->dbell_ring.virt = dma_alloc_coherent(dbell->dev, 512 * + DOORBELL_MESSAGE_SIZE, &dbell->dbell_ring.phys, GFP_KERNEL); + if (!dbell->dbell_ring.virt) { + printk(KERN_ERR "RIO: unable allocate inbound doorbell ring\n"); + rc = -ENOMEM; + goto out; + } + + /* Point dequeue/enqueue pointers at first entry in ring */ + out_be32(&dbell->dbell_regs->dqdpar, (u32) dbell->dbell_ring.phys); + out_be32(&dbell->dbell_regs->dqepar, (u32) dbell->dbell_ring.phys); + + /* Clear interrupt status */ + out_be32(&dbell->dbell_regs->dsr, 0x00000091); + + /* Hook up doorbell handler */ + rc = request_irq(IRQ_RIO_BELL(dbell), fsl_rio_dbell_handler, 0, + "dbell_rx", (void *)dbell); + if (rc < 0) { + dma_free_coherent(dbell->dev, 512 * DOORBELL_MESSAGE_SIZE, + dbell->dbell_ring.virt, dbell->dbell_ring.phys); + printk(KERN_ERR + "MPC85xx RIO: unable to request inbound doorbell irq"); + goto out; + } + + /* Configure doorbells for snooping, 512 entries, and enable */ + out_be32(&dbell->dbell_regs->dmr, 0x00108161); + +out: + return rc; +} + +int fsl_rio_setup_rmu(struct rio_mport *mport, struct device_node *node) +{ + struct rio_priv *priv; + struct fsl_rmu *rmu; + u64 msg_start; + const u32 *msg_addr; + int mlen; + int aw; + + if (!mport || !mport->priv) + return -EINVAL; + + priv = mport->priv; + + if (!node) { + dev_warn(priv->dev, "Can't get %s property 'fsl,rmu'\n", + priv->dev->of_node->full_name); + return -EINVAL; + } + + rmu = kzalloc(sizeof(struct fsl_rmu), GFP_KERNEL); + if (!rmu) + return -ENOMEM; + + aw = of_n_addr_cells(node); + msg_addr = of_get_property(node, "reg", &mlen); + if (!msg_addr) { + pr_err("%s: unable to find 'reg' property of message-unit\n", + node->full_name); + kfree(rmu); + return -ENOMEM; + } + msg_start = of_read_number(msg_addr, aw); + + rmu->msg_regs = (struct rio_msg_regs *) + (rmu_regs_win + (u32)msg_start); + + rmu->txirq = irq_of_parse_and_map(node, 0); + rmu->rxirq = irq_of_parse_and_map(node, 1); + printk(KERN_INFO "%s: txirq: %d, rxirq %d\n", + node->full_name, rmu->txirq, rmu->rxirq); + + priv->rmm_handle = rmu; + + rio_init_dbell_res(&mport->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff); + rio_init_mbox_res(&mport->riores[RIO_INB_MBOX_RESOURCE], 0, 0); + rio_init_mbox_res(&mport->riores[RIO_OUTB_MBOX_RESOURCE], 0, 0); + + return 0; +} diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c index 2d66275e489f..e8f385fbf549 100644 --- a/arch/powerpc/sysdev/fsl_soc.c +++ b/arch/powerpc/sysdev/fsl_soc.c @@ -19,7 +19,7 @@ #include <linux/major.h> #include <linux/delay.h> #include <linux/irq.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/of.h> diff --git a/arch/powerpc/sysdev/fsl_soc.h b/arch/powerpc/sysdev/fsl_soc.h index 2ece02beb8ff..c6d00736f07f 100644 --- a/arch/powerpc/sysdev/fsl_soc.h +++ b/arch/powerpc/sysdev/fsl_soc.h @@ -22,15 +22,24 @@ struct device_node; extern void fsl_rstcr_restart(char *cmd); #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE) + +/* The different ports that the DIU can be connected to */ +enum fsl_diu_monitor_port { + FSL_DIU_PORT_DVI, /* DVI */ + FSL_DIU_PORT_LVDS, /* Single-link LVDS */ + FSL_DIU_PORT_DLVDS /* Dual-link LVDS */ +}; + struct platform_diu_data_ops { - unsigned int (*get_pixel_format) (unsigned int bits_per_pixel, - int monitor_port); - void (*set_gamma_table) (int monitor_port, char *gamma_table_base); - void (*set_monitor_port) (int monitor_port); - void (*set_pixel_clock) (unsigned int pixclock); - ssize_t (*show_monitor_port) (int monitor_port, char *buf); - int (*set_sysfs_monitor_port) (int val); - void (*release_bootmem) (void); + u32 (*get_pixel_format)(enum fsl_diu_monitor_port port, + unsigned int bpp); + void (*set_gamma_table)(enum fsl_diu_monitor_port port, + char *gamma_table_base); + void (*set_monitor_port)(enum fsl_diu_monitor_port port); + void (*set_pixel_clock)(unsigned int pixclock); + enum fsl_diu_monitor_port (*valid_monitor_port) + (enum fsl_diu_monitor_port port); + void (*release_bootmem)(void); }; extern struct platform_diu_data_ops diu_ops; diff --git a/arch/powerpc/sysdev/mpc5xxx_clocks.c b/arch/powerpc/sysdev/mpc5xxx_clocks.c index 34e12f9995fe..96f815a55dfd 100644 --- a/arch/powerpc/sysdev/mpc5xxx_clocks.c +++ b/arch/powerpc/sysdev/mpc5xxx_clocks.c @@ -8,6 +8,7 @@ #include <linux/kernel.h> #include <linux/of_platform.h> +#include <linux/export.h> unsigned int mpc5xxx_get_bus_frequency(struct device_node *node) diff --git a/arch/powerpc/sysdev/mpc8xx_pic.c b/arch/powerpc/sysdev/mpc8xx_pic.c index 22e48e2d71f1..2ca0a85fcce9 100644 --- a/arch/powerpc/sysdev/mpc8xx_pic.c +++ b/arch/powerpc/sysdev/mpc8xx_pic.c @@ -1,5 +1,4 @@ #include <linux/kernel.h> -#include <linux/module.h> #include <linux/stddef.h> #include <linux/init.h> #include <linux/sched.h> diff --git a/arch/powerpc/sysdev/mpc8xxx_gpio.c b/arch/powerpc/sysdev/mpc8xxx_gpio.c deleted file mode 100644 index fb4963abdf55..000000000000 --- a/arch/powerpc/sysdev/mpc8xxx_gpio.c +++ /dev/null @@ -1,395 +0,0 @@ -/* - * GPIOs on MPC512x/8349/8572/8610 and compatible - * - * Copyright (C) 2008 Peter Korsgaard <jacmet@sunsite.dk> - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/of.h> -#include <linux/of_gpio.h> -#include <linux/gpio.h> -#include <linux/slab.h> -#include <linux/irq.h> - -#define MPC8XXX_GPIO_PINS 32 - -#define GPIO_DIR 0x00 -#define GPIO_ODR 0x04 -#define GPIO_DAT 0x08 -#define GPIO_IER 0x0c -#define GPIO_IMR 0x10 -#define GPIO_ICR 0x14 -#define GPIO_ICR2 0x18 - -struct mpc8xxx_gpio_chip { - struct of_mm_gpio_chip mm_gc; - spinlock_t lock; - - /* - * shadowed data register to be able to clear/set output pins in - * open drain mode safely - */ - u32 data; - struct irq_host *irq; - void *of_dev_id_data; -}; - -static inline u32 mpc8xxx_gpio2mask(unsigned int gpio) -{ - return 1u << (MPC8XXX_GPIO_PINS - 1 - gpio); -} - -static inline struct mpc8xxx_gpio_chip * -to_mpc8xxx_gpio_chip(struct of_mm_gpio_chip *mm) -{ - return container_of(mm, struct mpc8xxx_gpio_chip, mm_gc); -} - -static void mpc8xxx_gpio_save_regs(struct of_mm_gpio_chip *mm) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm); - - mpc8xxx_gc->data = in_be32(mm->regs + GPIO_DAT); -} - -/* Workaround GPIO 1 errata on MPC8572/MPC8536. The status of GPIOs - * defined as output cannot be determined by reading GPDAT register, - * so we use shadow data register instead. The status of input pins - * is determined by reading GPDAT register. - */ -static int mpc8572_gpio_get(struct gpio_chip *gc, unsigned int gpio) -{ - u32 val; - struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc); - struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm); - - val = in_be32(mm->regs + GPIO_DAT) & ~in_be32(mm->regs + GPIO_DIR); - - return (val | mpc8xxx_gc->data) & mpc8xxx_gpio2mask(gpio); -} - -static int mpc8xxx_gpio_get(struct gpio_chip *gc, unsigned int gpio) -{ - struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc); - - return in_be32(mm->regs + GPIO_DAT) & mpc8xxx_gpio2mask(gpio); -} - -static void mpc8xxx_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val) -{ - struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc); - struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm); - unsigned long flags; - - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - - if (val) - mpc8xxx_gc->data |= mpc8xxx_gpio2mask(gpio); - else - mpc8xxx_gc->data &= ~mpc8xxx_gpio2mask(gpio); - - out_be32(mm->regs + GPIO_DAT, mpc8xxx_gc->data); - - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); -} - -static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio) -{ - struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc); - struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm); - unsigned long flags; - - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - - clrbits32(mm->regs + GPIO_DIR, mpc8xxx_gpio2mask(gpio)); - - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); - - return 0; -} - -static int mpc8xxx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val) -{ - struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc); - struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm); - unsigned long flags; - - mpc8xxx_gpio_set(gc, gpio, val); - - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - - setbits32(mm->regs + GPIO_DIR, mpc8xxx_gpio2mask(gpio)); - - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); - - return 0; -} - -static int mpc8xxx_gpio_to_irq(struct gpio_chip *gc, unsigned offset) -{ - struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc); - struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm); - - if (mpc8xxx_gc->irq && offset < MPC8XXX_GPIO_PINS) - return irq_create_mapping(mpc8xxx_gc->irq, offset); - else - return -ENXIO; -} - -static void mpc8xxx_gpio_irq_cascade(unsigned int irq, struct irq_desc *desc) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_desc_get_handler_data(desc); - struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc; - unsigned int mask; - - mask = in_be32(mm->regs + GPIO_IER) & in_be32(mm->regs + GPIO_IMR); - if (mask) - generic_handle_irq(irq_linear_revmap(mpc8xxx_gc->irq, - 32 - ffs(mask))); -} - -static void mpc8xxx_irq_unmask(struct irq_data *d) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d); - struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc; - unsigned long flags; - - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - - setbits32(mm->regs + GPIO_IMR, mpc8xxx_gpio2mask(irqd_to_hwirq(d))); - - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); -} - -static void mpc8xxx_irq_mask(struct irq_data *d) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d); - struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc; - unsigned long flags; - - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - - clrbits32(mm->regs + GPIO_IMR, mpc8xxx_gpio2mask(irqd_to_hwirq(d))); - - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); -} - -static void mpc8xxx_irq_ack(struct irq_data *d) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d); - struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc; - - out_be32(mm->regs + GPIO_IER, mpc8xxx_gpio2mask(irqd_to_hwirq(d))); -} - -static int mpc8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d); - struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc; - unsigned long flags; - - switch (flow_type) { - case IRQ_TYPE_EDGE_FALLING: - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - setbits32(mm->regs + GPIO_ICR, - mpc8xxx_gpio2mask(irqd_to_hwirq(d))); - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); - break; - - case IRQ_TYPE_EDGE_BOTH: - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - clrbits32(mm->regs + GPIO_ICR, - mpc8xxx_gpio2mask(irqd_to_hwirq(d))); - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); - break; - - default: - return -EINVAL; - } - - return 0; -} - -static int mpc512x_irq_set_type(struct irq_data *d, unsigned int flow_type) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d); - struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc; - unsigned long gpio = irqd_to_hwirq(d); - void __iomem *reg; - unsigned int shift; - unsigned long flags; - - if (gpio < 16) { - reg = mm->regs + GPIO_ICR; - shift = (15 - gpio) * 2; - } else { - reg = mm->regs + GPIO_ICR2; - shift = (15 - (gpio % 16)) * 2; - } - - switch (flow_type) { - case IRQ_TYPE_EDGE_FALLING: - case IRQ_TYPE_LEVEL_LOW: - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - clrsetbits_be32(reg, 3 << shift, 2 << shift); - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); - break; - - case IRQ_TYPE_EDGE_RISING: - case IRQ_TYPE_LEVEL_HIGH: - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - clrsetbits_be32(reg, 3 << shift, 1 << shift); - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); - break; - - case IRQ_TYPE_EDGE_BOTH: - spin_lock_irqsave(&mpc8xxx_gc->lock, flags); - clrbits32(reg, 3 << shift); - spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags); - break; - - default: - return -EINVAL; - } - - return 0; -} - -static struct irq_chip mpc8xxx_irq_chip = { - .name = "mpc8xxx-gpio", - .irq_unmask = mpc8xxx_irq_unmask, - .irq_mask = mpc8xxx_irq_mask, - .irq_ack = mpc8xxx_irq_ack, - .irq_set_type = mpc8xxx_irq_set_type, -}; - -static int mpc8xxx_gpio_irq_map(struct irq_host *h, unsigned int virq, - irq_hw_number_t hw) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc = h->host_data; - - if (mpc8xxx_gc->of_dev_id_data) - mpc8xxx_irq_chip.irq_set_type = mpc8xxx_gc->of_dev_id_data; - - irq_set_chip_data(virq, h->host_data); - irq_set_chip_and_handler(virq, &mpc8xxx_irq_chip, handle_level_irq); - irq_set_irq_type(virq, IRQ_TYPE_NONE); - - return 0; -} - -static int mpc8xxx_gpio_irq_xlate(struct irq_host *h, struct device_node *ct, - const u32 *intspec, unsigned int intsize, - irq_hw_number_t *out_hwirq, - unsigned int *out_flags) - -{ - /* interrupt sense values coming from the device tree equal either - * EDGE_FALLING or EDGE_BOTH - */ - *out_hwirq = intspec[0]; - *out_flags = intspec[1]; - - return 0; -} - -static struct irq_host_ops mpc8xxx_gpio_irq_ops = { - .map = mpc8xxx_gpio_irq_map, - .xlate = mpc8xxx_gpio_irq_xlate, -}; - -static struct of_device_id mpc8xxx_gpio_ids[] __initdata = { - { .compatible = "fsl,mpc8349-gpio", }, - { .compatible = "fsl,mpc8572-gpio", }, - { .compatible = "fsl,mpc8610-gpio", }, - { .compatible = "fsl,mpc5121-gpio", .data = mpc512x_irq_set_type, }, - { .compatible = "fsl,qoriq-gpio", }, - {} -}; - -static void __init mpc8xxx_add_controller(struct device_node *np) -{ - struct mpc8xxx_gpio_chip *mpc8xxx_gc; - struct of_mm_gpio_chip *mm_gc; - struct gpio_chip *gc; - const struct of_device_id *id; - unsigned hwirq; - int ret; - - mpc8xxx_gc = kzalloc(sizeof(*mpc8xxx_gc), GFP_KERNEL); - if (!mpc8xxx_gc) { - ret = -ENOMEM; - goto err; - } - - spin_lock_init(&mpc8xxx_gc->lock); - - mm_gc = &mpc8xxx_gc->mm_gc; - gc = &mm_gc->gc; - - mm_gc->save_regs = mpc8xxx_gpio_save_regs; - gc->ngpio = MPC8XXX_GPIO_PINS; - gc->direction_input = mpc8xxx_gpio_dir_in; - gc->direction_output = mpc8xxx_gpio_dir_out; - if (of_device_is_compatible(np, "fsl,mpc8572-gpio")) - gc->get = mpc8572_gpio_get; - else - gc->get = mpc8xxx_gpio_get; - gc->set = mpc8xxx_gpio_set; - gc->to_irq = mpc8xxx_gpio_to_irq; - - ret = of_mm_gpiochip_add(np, mm_gc); - if (ret) - goto err; - - hwirq = irq_of_parse_and_map(np, 0); - if (hwirq == NO_IRQ) - goto skip_irq; - - mpc8xxx_gc->irq = - irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, MPC8XXX_GPIO_PINS, - &mpc8xxx_gpio_irq_ops, MPC8XXX_GPIO_PINS); - if (!mpc8xxx_gc->irq) - goto skip_irq; - - id = of_match_node(mpc8xxx_gpio_ids, np); - if (id) - mpc8xxx_gc->of_dev_id_data = id->data; - - mpc8xxx_gc->irq->host_data = mpc8xxx_gc; - - /* ack and mask all irqs */ - out_be32(mm_gc->regs + GPIO_IER, 0xffffffff); - out_be32(mm_gc->regs + GPIO_IMR, 0); - - irq_set_handler_data(hwirq, mpc8xxx_gc); - irq_set_chained_handler(hwirq, mpc8xxx_gpio_irq_cascade); - -skip_irq: - return; - -err: - pr_err("%s: registration failed with status %d\n", - np->full_name, ret); - kfree(mpc8xxx_gc); - - return; -} - -static int __init mpc8xxx_add_gpiochips(void) -{ - struct device_node *np; - - for_each_matching_node(np, mpc8xxx_gpio_ids) - mpc8xxx_add_controller(np); - - return 0; -} -arch_initcall(mpc8xxx_add_gpiochips); diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index d5d3ff3d757e..4e9ccb1015de 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -154,7 +154,7 @@ static inline unsigned int mpic_processor_id(struct mpic *mpic) { unsigned int cpu = 0; - if (mpic->flags & MPIC_PRIMARY) + if (!(mpic->flags & MPIC_SECONDARY)) cpu = hard_smp_processor_id(); return cpu; @@ -315,29 +315,25 @@ static void _mpic_map_mmio(struct mpic *mpic, phys_addr_t phys_addr, } #ifdef CONFIG_PPC_DCR -static void _mpic_map_dcr(struct mpic *mpic, struct device_node *node, - struct mpic_reg_bank *rb, +static void _mpic_map_dcr(struct mpic *mpic, struct mpic_reg_bank *rb, unsigned int offset, unsigned int size) { - const u32 *dbasep; - - dbasep = of_get_property(node, "dcr-reg", NULL); - - rb->dhost = dcr_map(node, *dbasep + offset, size); + phys_addr_t phys_addr = dcr_resource_start(mpic->node, 0); + rb->dhost = dcr_map(mpic->node, phys_addr + offset, size); BUG_ON(!DCR_MAP_OK(rb->dhost)); } -static inline void mpic_map(struct mpic *mpic, struct device_node *node, +static inline void mpic_map(struct mpic *mpic, phys_addr_t phys_addr, struct mpic_reg_bank *rb, unsigned int offset, unsigned int size) { if (mpic->flags & MPIC_USES_DCR) - _mpic_map_dcr(mpic, node, rb, offset, size); + _mpic_map_dcr(mpic, rb, offset, size); else _mpic_map_mmio(mpic, phys_addr, rb, offset, size); } #else /* CONFIG_PPC_DCR */ -#define mpic_map(m,n,p,b,o,s) _mpic_map_mmio(m,p,b,o,s) +#define mpic_map(m,p,b,o,s) _mpic_map_mmio(m,p,b,o,s) #endif /* !CONFIG_PPC_DCR */ @@ -800,8 +796,6 @@ static void mpic_end_ipi(struct irq_data *d) * IPIs are marked IRQ_PER_CPU. This has the side effect of * preventing the IRQ_PENDING/IRQ_INPROGRESS logic from * applying to them. We EOI them late to avoid re-entering. - * We mark IPI's with IRQF_DISABLED as they must run with - * irqs disabled. */ mpic_eoi(mpic); } @@ -903,7 +897,7 @@ int mpic_set_irq_type(struct irq_data *d, unsigned int flow_type) if (vold != vnew) mpic_irq_write(src, MPIC_INFO(IRQ_VECTOR_PRI), vnew); - return IRQ_SET_MASK_OK_NOCOPY;; + return IRQ_SET_MASK_OK_NOCOPY; } void mpic_set_vector(unsigned int virq, unsigned int vector) @@ -992,7 +986,7 @@ static int mpic_host_map(struct irq_host *h, unsigned int virq, #ifdef CONFIG_SMP else if (hw >= mpic->ipi_vecs[0]) { - WARN_ON(!(mpic->flags & MPIC_PRIMARY)); + WARN_ON(mpic->flags & MPIC_SECONDARY); DBG("mpic: mapping as IPI\n"); irq_set_chip_data(virq, mpic); @@ -1003,7 +997,7 @@ static int mpic_host_map(struct irq_host *h, unsigned int virq, #endif /* CONFIG_SMP */ if (hw >= mpic->timer_vecs[0] && hw <= mpic->timer_vecs[7]) { - WARN_ON(!(mpic->flags & MPIC_PRIMARY)); + WARN_ON(mpic->flags & MPIC_SECONDARY); DBG("mpic: mapping as timer\n"); irq_set_chip_data(virq, mpic); @@ -1117,17 +1111,28 @@ static int mpic_host_xlate(struct irq_host *h, struct device_node *ct, return 0; } +/* IRQ handler for a secondary MPIC cascaded from another IRQ controller */ +static void mpic_cascade(unsigned int irq, struct irq_desc *desc) +{ + struct irq_chip *chip = irq_desc_get_chip(desc); + struct mpic *mpic = irq_desc_get_handler_data(desc); + unsigned int virq; + + BUG_ON(!(mpic->flags & MPIC_SECONDARY)); + + virq = mpic_get_one_irq(mpic); + if (virq != NO_IRQ) + generic_handle_irq(virq); + + chip->irq_eoi(&desc->irq_data); +} + static struct irq_host_ops mpic_host_ops = { .match = mpic_host_match, .map = mpic_host_map, .xlate = mpic_host_xlate, }; -static int mpic_reset_prohibited(struct device_node *node) -{ - return node && of_get_property(node, "pic-no-reset", NULL); -} - /* * Exported functions */ @@ -1139,27 +1144,60 @@ struct mpic * __init mpic_alloc(struct device_node *node, unsigned int irq_count, const char *name) { - struct mpic *mpic; - u32 greg_feature; - const char *vers; - int i; - int intvec_top; - u64 paddr = phys_addr; + int i, psize, intvec_top; + struct mpic *mpic; + u32 greg_feature; + const char *vers; + const u32 *psrc; + + /* Default MPIC search parameters */ + static const struct of_device_id __initconst mpic_device_id[] = { + { .type = "open-pic", }, + { .compatible = "open-pic", }, + {}, + }; + + /* + * If we were not passed a device-tree node, then perform the default + * search for standardized a standardized OpenPIC. + */ + if (node) { + node = of_node_get(node); + } else { + node = of_find_matching_node(NULL, mpic_device_id); + if (!node) + return NULL; + } + + /* Pick the physical address from the device tree if unspecified */ + if (!phys_addr) { + /* Check if it is DCR-based */ + if (of_get_property(node, "dcr-reg", NULL)) { + flags |= MPIC_USES_DCR; + } else { + struct resource r; + if (of_address_to_resource(node, 0, &r)) + goto err_of_node_put; + phys_addr = r.start; + } + } mpic = kzalloc(sizeof(struct mpic), GFP_KERNEL); if (mpic == NULL) - return NULL; + goto err_of_node_put; mpic->name = name; + mpic->node = node; + mpic->paddr = phys_addr; mpic->hc_irq = mpic_irq_chip; mpic->hc_irq.name = name; - if (flags & MPIC_PRIMARY) + if (!(flags & MPIC_SECONDARY)) mpic->hc_irq.irq_set_affinity = mpic_set_affinity; #ifdef CONFIG_MPIC_U3_HT_IRQS mpic->hc_ht_irq = mpic_irq_ht_chip; mpic->hc_ht_irq.name = name; - if (flags & MPIC_PRIMARY) + if (!(flags & MPIC_SECONDARY)) mpic->hc_ht_irq.irq_set_affinity = mpic_set_affinity; #endif /* CONFIG_MPIC_U3_HT_IRQS */ @@ -1196,28 +1234,22 @@ struct mpic * __init mpic_alloc(struct device_node *node, mpic->spurious_vec = intvec_top; /* Check for "big-endian" in device-tree */ - if (node && of_get_property(node, "big-endian", NULL) != NULL) + if (of_get_property(mpic->node, "big-endian", NULL) != NULL) mpic->flags |= MPIC_BIG_ENDIAN; - if (node && of_device_is_compatible(node, "fsl,mpic")) + if (of_device_is_compatible(mpic->node, "fsl,mpic")) mpic->flags |= MPIC_FSL; /* Look for protected sources */ - if (node) { - int psize; - unsigned int bits, mapsize; - const u32 *psrc = - of_get_property(node, "protected-sources", &psize); - if (psrc) { - psize /= 4; - bits = intvec_top + 1; - mapsize = BITS_TO_LONGS(bits) * sizeof(unsigned long); - mpic->protected = kzalloc(mapsize, GFP_KERNEL); - BUG_ON(mpic->protected == NULL); - for (i = 0; i < psize; i++) { - if (psrc[i] > intvec_top) - continue; - __set_bit(psrc[i], mpic->protected); - } + psrc = of_get_property(mpic->node, "protected-sources", &psize); + if (psrc) { + /* Allocate a bitmap with one bit per interrupt */ + unsigned int mapsize = BITS_TO_LONGS(intvec_top + 1); + mpic->protected = kzalloc(mapsize*sizeof(long), GFP_KERNEL); + BUG_ON(mpic->protected == NULL); + for (i = 0; i < psize/sizeof(u32); i++) { + if (psrc[i] > intvec_top) + continue; + __set_bit(psrc[i], mpic->protected); } } @@ -1226,42 +1258,32 @@ struct mpic * __init mpic_alloc(struct device_node *node, #endif /* default register type */ - mpic->reg_type = (flags & MPIC_BIG_ENDIAN) ? - mpic_access_mmio_be : mpic_access_mmio_le; - - /* If no physical address is passed in, a device-node is mandatory */ - BUG_ON(paddr == 0 && node == NULL); + if (flags & MPIC_BIG_ENDIAN) + mpic->reg_type = mpic_access_mmio_be; + else + mpic->reg_type = mpic_access_mmio_le; - /* If no physical address passed in, check if it's dcr based */ - if (paddr == 0 && of_get_property(node, "dcr-reg", NULL) != NULL) { + /* + * An MPIC with a "dcr-reg" property must be accessed that way, but + * only if the kernel includes DCR support. + */ #ifdef CONFIG_PPC_DCR - mpic->flags |= MPIC_USES_DCR; + if (flags & MPIC_USES_DCR) mpic->reg_type = mpic_access_dcr; #else - BUG(); -#endif /* CONFIG_PPC_DCR */ - } - - /* If the MPIC is not DCR based, and no physical address was passed - * in, try to obtain one - */ - if (paddr == 0 && !(mpic->flags & MPIC_USES_DCR)) { - const u32 *reg = of_get_property(node, "reg", NULL); - BUG_ON(reg == NULL); - paddr = of_translate_address(node, reg); - BUG_ON(paddr == OF_BAD_ADDR); - } + BUG_ON(flags & MPIC_USES_DCR); +#endif /* Map the global registers */ - mpic_map(mpic, node, paddr, &mpic->gregs, MPIC_INFO(GREG_BASE), 0x1000); - mpic_map(mpic, node, paddr, &mpic->tmregs, MPIC_INFO(TIMER_BASE), 0x1000); + mpic_map(mpic, mpic->paddr, &mpic->gregs, MPIC_INFO(GREG_BASE), 0x1000); + mpic_map(mpic, mpic->paddr, &mpic->tmregs, MPIC_INFO(TIMER_BASE), 0x1000); /* Reset */ /* When using a device-node, reset requests are only honored if the MPIC * is allowed to reset. */ - if (mpic_reset_prohibited(node)) + if (of_get_property(mpic->node, "pic-no-reset", NULL)) mpic->flags |= MPIC_NO_RESET; if ((flags & MPIC_WANTS_RESET) && !(mpic->flags & MPIC_NO_RESET)) { @@ -1285,13 +1307,11 @@ struct mpic * __init mpic_alloc(struct device_node *node, mpic_read(mpic->gregs, MPIC_INFO(GREG_GLOBAL_CONF_0)) | MPIC_GREG_GCONF_MCK); - /* Read feature register, calculate num CPUs and, for non-ISU - * MPICs, num sources as well. On ISU MPICs, sources are counted - * as ISUs are added + /* + * Read feature register. For non-ISU MPICs, num sources as well. On + * ISU MPICs, sources are counted as ISUs are added */ greg_feature = mpic_read(mpic->gregs, MPIC_INFO(GREG_FEATURE_0)); - mpic->num_cpus = ((greg_feature & MPIC_GREG_FEATURE_LAST_CPU_MASK) - >> MPIC_GREG_FEATURE_LAST_CPU_SHIFT) + 1; if (isu_size == 0) { if (flags & MPIC_BROKEN_FRR_NIRQS) mpic->num_sources = mpic->irq_count; @@ -1301,26 +1321,39 @@ struct mpic * __init mpic_alloc(struct device_node *node, >> MPIC_GREG_FEATURE_LAST_SRC_SHIFT) + 1; } + /* + * The MPIC driver will crash if there are more cores than we + * can initialize, so we may as well catch that problem here. + */ + BUG_ON(num_possible_cpus() > MPIC_MAX_CPUS); + /* Map the per-CPU registers */ - for (i = 0; i < mpic->num_cpus; i++) { - mpic_map(mpic, node, paddr, &mpic->cpuregs[i], - MPIC_INFO(CPU_BASE) + i * MPIC_INFO(CPU_STRIDE), + for_each_possible_cpu(i) { + unsigned int cpu = get_hard_smp_processor_id(i); + + mpic_map(mpic, mpic->paddr, &mpic->cpuregs[cpu], + MPIC_INFO(CPU_BASE) + cpu * MPIC_INFO(CPU_STRIDE), 0x1000); } /* Initialize main ISU if none provided */ if (mpic->isu_size == 0) { mpic->isu_size = mpic->num_sources; - mpic_map(mpic, node, paddr, &mpic->isus[0], + mpic_map(mpic, mpic->paddr, &mpic->isus[0], MPIC_INFO(IRQ_BASE), MPIC_INFO(IRQ_STRIDE) * mpic->isu_size); } mpic->isu_shift = 1 + __ilog2(mpic->isu_size - 1); mpic->isu_mask = (1 << mpic->isu_shift) - 1; - mpic->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR, + mpic->irqhost = irq_alloc_host(mpic->node, IRQ_HOST_MAP_LINEAR, isu_size ? isu_size : mpic->num_sources, &mpic_host_ops, flags & MPIC_LARGE_VECTORS ? 2048 : 256); + + /* + * FIXME: The code leaks the MPIC object and mappings here; this + * is very unlikely to fail but it ought to be fixed anyways. + */ if (mpic->irqhost == NULL) return NULL; @@ -1343,19 +1376,23 @@ struct mpic * __init mpic_alloc(struct device_node *node, } printk(KERN_INFO "mpic: Setting up MPIC \"%s\" version %s at %llx," " max %d CPUs\n", - name, vers, (unsigned long long)paddr, mpic->num_cpus); + name, vers, (unsigned long long)mpic->paddr, num_possible_cpus()); printk(KERN_INFO "mpic: ISU size: %d, shift: %d, mask: %x\n", mpic->isu_size, mpic->isu_shift, mpic->isu_mask); mpic->next = mpics; mpics = mpic; - if (flags & MPIC_PRIMARY) { + if (!(flags & MPIC_SECONDARY)) { mpic_primary = mpic; irq_set_default_host(mpic->irqhost); } return mpic; + +err_of_node_put: + of_node_put(node); + return NULL; } void __init mpic_assign_isu(struct mpic *mpic, unsigned int isu_num, @@ -1365,7 +1402,7 @@ void __init mpic_assign_isu(struct mpic *mpic, unsigned int isu_num, BUG_ON(isu_num >= MPIC_MAX_ISU); - mpic_map(mpic, mpic->irqhost->of_node, + mpic_map(mpic, paddr, &mpic->isus[isu_num], 0, MPIC_INFO(IRQ_STRIDE) * mpic->isu_size); @@ -1381,8 +1418,7 @@ void __init mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count) void __init mpic_init(struct mpic *mpic) { - int i; - int cpu; + int i, cpu; BUG_ON(mpic->num_sources == 0); @@ -1420,7 +1456,7 @@ void __init mpic_init(struct mpic *mpic) /* Do the HT PIC fixups on U3 broken mpic */ DBG("MPIC flags: %x\n", mpic->flags); - if ((mpic->flags & MPIC_U3_HT_IRQS) && (mpic->flags & MPIC_PRIMARY)) { + if ((mpic->flags & MPIC_U3_HT_IRQS) && !(mpic->flags & MPIC_SECONDARY)) { mpic_scan_ht_pics(mpic); mpic_u3msi_init(mpic); } @@ -1467,6 +1503,17 @@ void __init mpic_init(struct mpic *mpic) GFP_KERNEL); BUG_ON(mpic->save_data == NULL); #endif + + /* Check if this MPIC is chained from a parent interrupt controller */ + if (mpic->flags & MPIC_SECONDARY) { + int virq = irq_of_parse_and_map(mpic->node, 0); + if (virq != NO_IRQ) { + printk(KERN_INFO "%s: hooking up to IRQ %d\n", + mpic->node->full_name, virq); + irq_set_handler_data(virq, mpic); + irq_set_chained_handler(virq, &mpic_cascade); + } + } } void __init mpic_set_clk_ratio(struct mpic *mpic, u32 clock_ratio) @@ -1742,6 +1789,7 @@ void mpic_reset_core(int cpu) struct mpic *mpic = mpic_primary; u32 pir; int cpuid = get_hard_smp_processor_id(cpu); + int i; /* Set target bit for core reset */ pir = mpic_read(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT)); @@ -1753,6 +1801,15 @@ void mpic_reset_core(int cpu) pir &= ~(1 << cpuid); mpic_write(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT), pir); mpic_read(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT)); + + /* Perform 15 EOI on each reset core to clear pending interrupts. + * This is required for FSL CoreNet based devices */ + if (mpic->flags & MPIC_FSL) { + for (i = 0; i < 15; i++) { + _mpic_write(mpic->reg_type, &mpic->cpuregs[cpuid], + MPIC_CPU_EOI, 0); + } + } } #endif /* CONFIG_SMP */ diff --git a/arch/powerpc/sysdev/mv64x60_pci.c b/arch/powerpc/sysdev/mv64x60_pci.c index 77bb3f4d530a..b0037cefaada 100644 --- a/arch/powerpc/sysdev/mv64x60_pci.c +++ b/arch/powerpc/sysdev/mv64x60_pci.c @@ -12,6 +12,7 @@ #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/init.h> +#include <linux/stat.h> #include <linux/pci.h> #include <asm/prom.h> diff --git a/arch/powerpc/sysdev/pmi.c b/arch/powerpc/sysdev/pmi.c index 8ce4fc3d9828..8f0465422b1e 100644 --- a/arch/powerpc/sysdev/pmi.c +++ b/arch/powerpc/sysdev/pmi.c @@ -28,6 +28,7 @@ #include <linux/slab.h> #include <linux/completion.h> #include <linux/spinlock.h> +#include <linux/module.h> #include <linux/workqueue.h> #include <linux/of_device.h> #include <linux/of_platform.h> diff --git a/arch/powerpc/sysdev/ppc4xx_cpm.c b/arch/powerpc/sysdev/ppc4xx_cpm.c index 73b86cc5ea74..82e2cfe35c62 100644 --- a/arch/powerpc/sysdev/ppc4xx_cpm.c +++ b/arch/powerpc/sysdev/ppc4xx_cpm.c @@ -179,12 +179,12 @@ static struct kobj_attribute cpm_idle_attr = static void cpm_idle_config_sysfs(void) { - struct sys_device *sys_dev; + struct device *dev; unsigned long ret; - sys_dev = get_cpu_sysdev(0); + dev = get_cpu_device(0); - ret = sysfs_create_file(&sys_dev->kobj, + ret = sysfs_create_file(&dev->kobj, &cpm_idle_attr.attr); if (ret) printk(KERN_WARNING diff --git a/arch/powerpc/sysdev/ppc4xx_msi.c b/arch/powerpc/sysdev/ppc4xx_msi.c index 367af0241851..1c2d7af17bbe 100644 --- a/arch/powerpc/sysdev/ppc4xx_msi.c +++ b/arch/powerpc/sysdev/ppc4xx_msi.c @@ -27,6 +27,7 @@ #include <linux/msi.h> #include <linux/of_platform.h> #include <linux/interrupt.h> +#include <linux/export.h> #include <asm/prom.h> #include <asm/hw_irq.h> #include <asm/ppc-pci.h> diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c index dbfe96bc878a..4f05f7542346 100644 --- a/arch/powerpc/sysdev/ppc4xx_pci.c +++ b/arch/powerpc/sysdev/ppc4xx_pci.c @@ -185,9 +185,15 @@ static int __init ppc4xx_parse_dma_ranges(struct pci_controller *hose, out: dma_offset_set = 1; pci_dram_offset = res->start; + hose->dma_window_base_cur = res->start; + hose->dma_window_size = resource_size(res); printk(KERN_INFO "4xx PCI DMA offset set to 0x%08lx\n", pci_dram_offset); + printk(KERN_INFO "4xx PCI DMA window base to 0x%016llx\n", + (unsigned long long)hose->dma_window_base_cur); + printk(KERN_INFO "DMA window size 0x%016llx\n", + (unsigned long long)hose->dma_window_size); return 0; } @@ -647,6 +653,7 @@ static unsigned int ppc4xx_pciex_port_count; struct ppc4xx_pciex_hwops { + bool want_sdr; int (*core_init)(struct device_node *np); int (*port_init_hw)(struct ppc4xx_pciex_port *port); int (*setup_utl)(struct ppc4xx_pciex_port *port); @@ -834,7 +841,7 @@ static int __init ppc440spe_pciex_core_init(struct device_node *np) return 3; } -static int ppc440spe_pciex_init_port_hw(struct ppc4xx_pciex_port *port) +static int __init ppc440spe_pciex_init_port_hw(struct ppc4xx_pciex_port *port) { u32 val = 1 << 24; @@ -872,12 +879,12 @@ static int ppc440spe_pciex_init_port_hw(struct ppc4xx_pciex_port *port) return ppc4xx_pciex_port_reset_sdr(port); } -static int ppc440speA_pciex_init_port_hw(struct ppc4xx_pciex_port *port) +static int __init ppc440speA_pciex_init_port_hw(struct ppc4xx_pciex_port *port) { return ppc440spe_pciex_init_port_hw(port); } -static int ppc440speB_pciex_init_port_hw(struct ppc4xx_pciex_port *port) +static int __init ppc440speB_pciex_init_port_hw(struct ppc4xx_pciex_port *port) { int rc = ppc440spe_pciex_init_port_hw(port); @@ -916,6 +923,7 @@ static int ppc440speB_pciex_init_utl(struct ppc4xx_pciex_port *port) static struct ppc4xx_pciex_hwops ppc440speA_pcie_hwops __initdata = { + .want_sdr = true, .core_init = ppc440spe_pciex_core_init, .port_init_hw = ppc440speA_pciex_init_port_hw, .setup_utl = ppc440speA_pciex_init_utl, @@ -924,6 +932,7 @@ static struct ppc4xx_pciex_hwops ppc440speA_pcie_hwops __initdata = static struct ppc4xx_pciex_hwops ppc440speB_pcie_hwops __initdata = { + .want_sdr = true, .core_init = ppc440spe_pciex_core_init, .port_init_hw = ppc440speB_pciex_init_port_hw, .setup_utl = ppc440speB_pciex_init_utl, @@ -936,7 +945,7 @@ static int __init ppc460ex_pciex_core_init(struct device_node *np) return 2; } -static int ppc460ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port) +static int __init ppc460ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port) { u32 val; u32 utlset1; @@ -1034,6 +1043,7 @@ static int ppc460ex_pciex_init_utl(struct ppc4xx_pciex_port *port) static struct ppc4xx_pciex_hwops ppc460ex_pcie_hwops __initdata = { + .want_sdr = true, .core_init = ppc460ex_pciex_core_init, .port_init_hw = ppc460ex_pciex_init_port_hw, .setup_utl = ppc460ex_pciex_init_utl, @@ -1092,6 +1102,10 @@ static int __init ppc460sx_pciex_core_init(struct device_node *np) mtdcri(SDR0, PESDR1_460SX_HSSSLEW, 0xFFFF0000); mtdcri(SDR0, PESDR2_460SX_HSSSLEW, 0xFFFF0000); + /* Set HSS PRBS enabled */ + mtdcri(SDR0, PESDR0_460SX_HSSCTLSET, 0x00001130); + mtdcri(SDR0, PESDR2_460SX_HSSCTLSET, 0x00001130); + udelay(100); /* De-assert PLLRESET */ @@ -1122,7 +1136,7 @@ static int __init ppc460sx_pciex_core_init(struct device_node *np) return 2; } -static int ppc460sx_pciex_init_port_hw(struct ppc4xx_pciex_port *port) +static int __init ppc460sx_pciex_init_port_hw(struct ppc4xx_pciex_port *port) { if (port->endpoint) @@ -1132,9 +1146,6 @@ static int ppc460sx_pciex_init_port_hw(struct ppc4xx_pciex_port *port) dcri_clrset(SDR0, port->sdr_base + PESDRn_UTLSET2, 0, 0x01000000); - /*Gen-1*/ - mtdcri(SDR0, port->sdr_base + PESDRn_460SX_RCEI, 0x08000000); - dcri_clrset(SDR0, port->sdr_base + PESDRn_RCSSET, (PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTDL), PESDRx_RCSSET_RSTPYN); @@ -1148,14 +1159,43 @@ static int ppc460sx_pciex_init_utl(struct ppc4xx_pciex_port *port) { /* Max 128 Bytes */ out_be32 (port->utl_base + PEUTL_PBBSZ, 0x00000000); + /* Assert VRB and TXE - per datasheet turn off addr validation */ + out_be32(port->utl_base + PEUTL_PCTL, 0x80800000); return 0; } +static void __init ppc460sx_pciex_check_link(struct ppc4xx_pciex_port *port) +{ + void __iomem *mbase; + int attempt = 50; + + port->link = 0; + + mbase = ioremap(port->cfg_space.start + 0x10000000, 0x1000); + if (mbase == NULL) { + printk(KERN_ERR "%s: Can't map internal config space !", + port->node->full_name); + goto done; + } + + while (attempt && (0 == (in_le32(mbase + PECFG_460SX_DLLSTA) + & PECFG_460SX_DLLSTA_LINKUP))) { + attempt--; + mdelay(10); + } + if (attempt) + port->link = 1; +done: + iounmap(mbase); + +} + static struct ppc4xx_pciex_hwops ppc460sx_pcie_hwops __initdata = { + .want_sdr = true, .core_init = ppc460sx_pciex_core_init, .port_init_hw = ppc460sx_pciex_init_port_hw, .setup_utl = ppc460sx_pciex_init_utl, - .check_link = ppc4xx_pciex_check_link_sdr, + .check_link = ppc460sx_pciex_check_link, }; #endif /* CONFIG_44x */ @@ -1189,7 +1229,7 @@ static void ppc405ex_pcie_phy_reset(struct ppc4xx_pciex_port *port) mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x00101000); } -static int ppc405ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port) +static int __init ppc405ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port) { u32 val; @@ -1247,6 +1287,7 @@ static int ppc405ex_pciex_init_utl(struct ppc4xx_pciex_port *port) static struct ppc4xx_pciex_hwops ppc405ex_pcie_hwops __initdata = { + .want_sdr = true, .core_init = ppc405ex_pciex_core_init, .port_init_hw = ppc405ex_pciex_init_port_hw, .setup_utl = ppc405ex_pciex_init_utl, @@ -1255,6 +1296,52 @@ static struct ppc4xx_pciex_hwops ppc405ex_pcie_hwops __initdata = #endif /* CONFIG_40x */ +#ifdef CONFIG_476FPE +static int __init ppc_476fpe_pciex_core_init(struct device_node *np) +{ + return 4; +} + +static void __init ppc_476fpe_pciex_check_link(struct ppc4xx_pciex_port *port) +{ + u32 timeout_ms = 20; + u32 val = 0, mask = (PECFG_TLDLP_LNKUP|PECFG_TLDLP_PRESENT); + void __iomem *mbase = ioremap(port->cfg_space.start + 0x10000000, + 0x1000); + + printk(KERN_INFO "PCIE%d: Checking link...\n", port->index); + + if (mbase == NULL) { + printk(KERN_WARNING "PCIE%d: failed to get cfg space\n", + port->index); + return; + } + + while (timeout_ms--) { + val = in_le32(mbase + PECFG_TLDLP); + + if ((val & mask) == mask) + break; + msleep(10); + } + + if (val & PECFG_TLDLP_PRESENT) { + printk(KERN_INFO "PCIE%d: link is up !\n", port->index); + port->link = 1; + } else + printk(KERN_WARNING "PCIE%d: Link up failed\n", port->index); + + iounmap(mbase); + return; +} + +static struct ppc4xx_pciex_hwops ppc_476fpe_pcie_hwops __initdata = +{ + .core_init = ppc_476fpe_pciex_core_init, + .check_link = ppc_476fpe_pciex_check_link, +}; +#endif /* CONFIG_476FPE */ + /* Check that the core has been initied and if not, do it */ static int __init ppc4xx_pciex_check_core_init(struct device_node *np) { @@ -1280,6 +1367,10 @@ static int __init ppc4xx_pciex_check_core_init(struct device_node *np) if (of_device_is_compatible(np, "ibm,plb-pciex-405ex")) ppc4xx_pciex_hwops = &ppc405ex_pcie_hwops; #endif +#ifdef CONFIG_476FPE + if (of_device_is_compatible(np, "ibm,plb-pciex-476fpe")) + ppc4xx_pciex_hwops = &ppc_476fpe_pcie_hwops; +#endif if (ppc4xx_pciex_hwops == NULL) { printk(KERN_WARNING "PCIE: unknown host type %s\n", np->full_name); @@ -1338,15 +1429,15 @@ static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port) if (rc != 0) return rc; - if (ppc4xx_pciex_hwops->check_link) - ppc4xx_pciex_hwops->check_link(port); - /* * Initialize mapping: disable all regions and configure * CFG and REG regions based on resources in the device tree */ ppc4xx_pciex_port_init_mapping(port); + if (ppc4xx_pciex_hwops->check_link) + ppc4xx_pciex_hwops->check_link(port); + /* * Map UTL */ @@ -1360,13 +1451,23 @@ static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port) ppc4xx_pciex_hwops->setup_utl(port); /* - * Check for VC0 active and assert RDY. + * Check for VC0 active or PLL Locked and assert RDY. */ if (port->sdr_base) { - if (port->link && - ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS, - 1 << 16, 1 << 16, 5000)) { - printk(KERN_INFO "PCIE%d: VC0 not active\n", port->index); + if (of_device_is_compatible(port->node, + "ibm,plb-pciex-460sx")){ + if (port->link && ppc4xx_pciex_wait_on_sdr(port, + PESDRn_RCSSTS, + 1 << 12, 1 << 12, 5000)) { + printk(KERN_INFO "PCIE%d: PLL not locked\n", + port->index); + port->link = 0; + } + } else if (port->link && + ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS, + 1 << 16, 1 << 16, 5000)) { + printk(KERN_INFO "PCIE%d: VC0 not active\n", + port->index); port->link = 0; } @@ -1573,8 +1674,19 @@ static int __init ppc4xx_setup_one_pciex_POM(struct ppc4xx_pciex_port *port, dcr_write(port->dcrs, DCRO_PEGPL_OMR1BAH, lah); dcr_write(port->dcrs, DCRO_PEGPL_OMR1BAL, lal); dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKH, 0x7fffffff); - /* Note that 3 here means enabled | single region */ - dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL, sa | 3); + /*Enabled and single region */ + if (of_device_is_compatible(port->node, "ibm,plb-pciex-460sx")) + dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL, + sa | DCRO_PEGPL_460SX_OMR1MSKL_UOT + | DCRO_PEGPL_OMRxMSKL_VAL); + else if (of_device_is_compatible(port->node, "ibm,plb-pciex-476fpe")) + dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL, + sa | DCRO_PEGPL_476FPE_OMR1MSKL_UOT + | DCRO_PEGPL_OMRxMSKL_VAL); + else + dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL, + sa | DCRO_PEGPL_OMR1MSKL_UOT + | DCRO_PEGPL_OMRxMSKL_VAL); break; case 1: out_le32(mbase + PECFG_POM1LAH, pciah); @@ -1582,8 +1694,8 @@ static int __init ppc4xx_setup_one_pciex_POM(struct ppc4xx_pciex_port *port, dcr_write(port->dcrs, DCRO_PEGPL_OMR2BAH, lah); dcr_write(port->dcrs, DCRO_PEGPL_OMR2BAL, lal); dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKH, 0x7fffffff); - /* Note that 3 here means enabled | single region */ - dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKL, sa | 3); + dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKL, + sa | DCRO_PEGPL_OMRxMSKL_VAL); break; case 2: out_le32(mbase + PECFG_POM2LAH, pciah); @@ -1592,7 +1704,9 @@ static int __init ppc4xx_setup_one_pciex_POM(struct ppc4xx_pciex_port *port, dcr_write(port->dcrs, DCRO_PEGPL_OMR3BAL, lal); dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKH, 0x7fffffff); /* Note that 3 here means enabled | IO space !!! */ - dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKL, sa | 3); + dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKL, + sa | DCRO_PEGPL_OMR3MSKL_IO + | DCRO_PEGPL_OMRxMSKL_VAL); break; } @@ -1691,7 +1805,11 @@ static void __init ppc4xx_configure_pciex_PIMs(struct ppc4xx_pciex_port *port, /* Calculate window size */ sa = (0xffffffffffffffffull << ilog2(size)); if (res->flags & IORESOURCE_PREFETCH) - sa |= 0x8; + sa |= PCI_BASE_ADDRESS_MEM_PREFETCH; + + if (of_device_is_compatible(port->node, "ibm,plb-pciex-460sx") || + of_device_is_compatible(port->node, "ibm,plb-pciex-476fpe")) + sa |= PCI_BASE_ADDRESS_MEM_TYPE_64; out_le32(mbase + PECFG_BAR0HMPA, RES_TO_U32_HIGH(sa)); out_le32(mbase + PECFG_BAR0LMPA, RES_TO_U32_LOW(sa)); @@ -1854,6 +1972,10 @@ static void __init ppc4xx_pciex_port_setup_hose(struct ppc4xx_pciex_port *port) } out_le16(mbase + 0x202, val); + /* Enable Bus master, memory, and io space */ + if (of_device_is_compatible(port->node, "ibm,plb-pciex-460sx")) + out_le16(mbase + 0x204, 0x7); + if (!port->endpoint) { /* Set Class Code to PCI-PCI bridge and Revision Id to 1 */ out_le32(mbase + 0x208, 0x06040001); @@ -1917,13 +2039,15 @@ static void __init ppc4xx_probe_pciex_bridge(struct device_node *np) } port->node = of_node_get(np); - pval = of_get_property(np, "sdr-base", NULL); - if (pval == NULL) { - printk(KERN_ERR "PCIE: missing sdr-base for %s\n", - np->full_name); - return; + if (ppc4xx_pciex_hwops->want_sdr) { + pval = of_get_property(np, "sdr-base", NULL); + if (pval == NULL) { + printk(KERN_ERR "PCIE: missing sdr-base for %s\n", + np->full_name); + return; + } + port->sdr_base = *pval; } - port->sdr_base = *pval; /* Check if device_type property is set to "pci" or "pci-endpoint". * Resulting from this setup this PCIe port will be configured diff --git a/arch/powerpc/sysdev/ppc4xx_pci.h b/arch/powerpc/sysdev/ppc4xx_pci.h index c39a134e8684..bb4821938ab1 100644 --- a/arch/powerpc/sysdev/ppc4xx_pci.h +++ b/arch/powerpc/sysdev/ppc4xx_pci.h @@ -464,6 +464,25 @@ #define PECFG_POM2LAL 0x390 #define PECFG_POM2LAH 0x394 +/* 460sx only */ +#define PECFG_460SX_DLLSTA 0x3f8 + +/* 460sx Bit Mappings */ +#define PECFG_460SX_DLLSTA_LINKUP 0x00000010 +#define DCRO_PEGPL_460SX_OMR1MSKL_UOT 0x00000004 + +/* PEGPL Bit Mappings */ +#define DCRO_PEGPL_OMRxMSKL_VAL 0x00000001 +#define DCRO_PEGPL_OMR1MSKL_UOT 0x00000002 +#define DCRO_PEGPL_OMR3MSKL_IO 0x00000002 + +/* 476FPE */ +#define PCCFG_LCPA 0x270 +#define PECFG_TLDLP 0x3F8 +#define PECFG_TLDLP_LNKUP 0x00000008 +#define PECFG_TLDLP_PRESENT 0x00000010 +#define DCRO_PEGPL_476FPE_OMR1MSKL_UOT 0x00000004 + /* SDR Bit Mappings */ #define PESDRx_RCSSET_HLDPLB 0x10000000 #define PESDRx_RCSSET_RSTGU 0x01000000 diff --git a/arch/powerpc/sysdev/ppc4xx_soc.c b/arch/powerpc/sysdev/ppc4xx_soc.c index d3d6ce3c33b4..0debcc31ad70 100644 --- a/arch/powerpc/sysdev/ppc4xx_soc.c +++ b/arch/powerpc/sysdev/ppc4xx_soc.c @@ -115,7 +115,7 @@ static int __init ppc4xx_l2c_probe(void) } /* Install error handler */ - if (request_irq(irq, l2c_error_handler, IRQF_DISABLED, "L2C", 0) < 0) { + if (request_irq(irq, l2c_error_handler, 0, "L2C", 0) < 0) { printk(KERN_ERR "Cannot install L2C error handler" ", cache is not enabled\n"); of_node_put(np); diff --git a/arch/powerpc/sysdev/qe_lib/gpio.c b/arch/powerpc/sysdev/qe_lib/gpio.c index 36bf845df127..521e67a49dc4 100644 --- a/arch/powerpc/sysdev/qe_lib/gpio.c +++ b/arch/powerpc/sysdev/qe_lib/gpio.c @@ -20,6 +20,7 @@ #include <linux/of_gpio.h> #include <linux/gpio.h> #include <linux/slab.h> +#include <linux/export.h> #include <asm/qe.h> struct qe_gpio_chip { @@ -138,14 +139,10 @@ struct qe_pin { struct qe_pin *qe_pin_request(struct device_node *np, int index) { struct qe_pin *qe_pin; - struct device_node *gpio_np; struct gpio_chip *gc; struct of_mm_gpio_chip *mm_gc; struct qe_gpio_chip *qe_gc; int err; - int size; - const void *gpio_spec; - const u32 *gpio_cells; unsigned long flags; qe_pin = kzalloc(sizeof(*qe_pin), GFP_KERNEL); @@ -154,45 +151,25 @@ struct qe_pin *qe_pin_request(struct device_node *np, int index) return ERR_PTR(-ENOMEM); } - err = of_parse_phandles_with_args(np, "gpios", "#gpio-cells", index, - &gpio_np, &gpio_spec); - if (err) { - pr_debug("%s: can't parse gpios property\n", __func__); + err = of_get_gpio(np, index); + if (err < 0) + goto err0; + gc = gpio_to_chip(err); + if (WARN_ON(!gc)) goto err0; - } - if (!of_device_is_compatible(gpio_np, "fsl,mpc8323-qe-pario-bank")) { + if (!of_device_is_compatible(gc->of_node, "fsl,mpc8323-qe-pario-bank")) { pr_debug("%s: tried to get a non-qe pin\n", __func__); err = -EINVAL; - goto err1; - } - - gc = of_node_to_gpiochip(gpio_np); - if (!gc) { - pr_debug("%s: gpio controller %s isn't registered\n", - np->full_name, gpio_np->full_name); - err = -ENODEV; - goto err1; - } - - gpio_cells = of_get_property(gpio_np, "#gpio-cells", &size); - if (!gpio_cells || size != sizeof(*gpio_cells) || - *gpio_cells != gc->of_gpio_n_cells) { - pr_debug("%s: wrong #gpio-cells for %s\n", - np->full_name, gpio_np->full_name); - err = -EINVAL; - goto err1; + goto err0; } - err = gc->of_xlate(gc, np, gpio_spec, NULL); - if (err < 0) - goto err1; - mm_gc = to_of_mm_gpio_chip(gc); qe_gc = to_qe_gpio_chip(mm_gc); spin_lock_irqsave(&qe_gc->lock, flags); + err -= gc->base; if (test_and_set_bit(QE_PIN_REQUESTED, &qe_gc->pin_flags[err]) == 0) { qe_pin->controller = qe_gc; qe_pin->num = err; @@ -205,8 +182,6 @@ struct qe_pin *qe_pin_request(struct device_node *np, int index) if (!err) return qe_pin; -err1: - of_node_put(gpio_np); err0: kfree(qe_pin); pr_debug("%s failed with status %d\n", __func__, err); diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c index 904c6cbaf45b..ceb09cbd2329 100644 --- a/arch/powerpc/sysdev/qe_lib/qe.c +++ b/arch/powerpc/sysdev/qe_lib/qe.c @@ -216,7 +216,7 @@ int qe_setbrg(enum qe_clock brg, unsigned int rate, unsigned int multiplier) /* Errata QE_General4, which affects some MPC832x and MPC836x SOCs, says that the BRG divisor must be even if you're not using divide-by-16 mode. */ - if (!div16 && (divisor & 1)) + if (!div16 && (divisor & 1) && (divisor > 3)) divisor++; tempval = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) | @@ -382,7 +382,7 @@ static void qe_upload_microcode(const void *base, /* * Upload a microcode to the I-RAM at a specific address. * - * See Documentation/powerpc/qe-firmware.txt for information on QE microcode + * See Documentation/powerpc/qe_firmware.txt for information on QE microcode * uploading. * * Currently, only version 1 is supported, so the 'version' field must be diff --git a/arch/powerpc/sysdev/qe_lib/qe_ic.c b/arch/powerpc/sysdev/qe_lib/qe_ic.c index 18e75ca19fe6..73034bd203c4 100644 --- a/arch/powerpc/sysdev/qe_lib/qe_ic.c +++ b/arch/powerpc/sysdev/qe_lib/qe_ic.c @@ -22,7 +22,6 @@ #include <linux/stddef.h> #include <linux/sched.h> #include <linux/signal.h> -#include <linux/sysdev.h> #include <linux/device.h> #include <linux/bootmem.h> #include <linux/spinlock.h> @@ -484,13 +483,14 @@ int qe_ic_set_high_priority(unsigned int virq, unsigned int priority, int high) return 0; } -static struct sysdev_class qe_ic_sysclass = { +static struct bus_type qe_ic_subsys = { .name = "qe_ic", + .dev_name = "qe_ic", }; -static struct sys_device device_qe_ic = { +static struct device device_qe_ic = { .id = 0, - .cls = &qe_ic_sysclass, + .bus = &qe_ic_subsys, }; static int __init init_qe_ic_sysfs(void) @@ -499,12 +499,12 @@ static int __init init_qe_ic_sysfs(void) printk(KERN_DEBUG "Registering qe_ic with sysfs...\n"); - rc = sysdev_class_register(&qe_ic_sysclass); + rc = subsys_system_register(&qe_ic_subsys, NULL); if (rc) { printk(KERN_ERR "Failed registering qe_ic sys class\n"); return -ENODEV; } - rc = sysdev_register(&device_qe_ic); + rc = device_register(&device_qe_ic); if (rc) { printk(KERN_ERR "Failed registering qe_ic sys device\n"); return -ENODEV; diff --git a/arch/powerpc/sysdev/qe_lib/ucc.c b/arch/powerpc/sysdev/qe_lib/ucc.c index fa589b21dbcd..04677505f20f 100644 --- a/arch/powerpc/sysdev/qe_lib/ucc.c +++ b/arch/powerpc/sysdev/qe_lib/ucc.c @@ -18,7 +18,7 @@ #include <linux/errno.h> #include <linux/stddef.h> #include <linux/spinlock.h> -#include <linux/module.h> +#include <linux/export.h> #include <asm/irq.h> #include <asm/io.h> diff --git a/arch/powerpc/sysdev/qe_lib/ucc_fast.c b/arch/powerpc/sysdev/qe_lib/ucc_fast.c index 25fbbfaa837d..fba02440d122 100644 --- a/arch/powerpc/sysdev/qe_lib/ucc_fast.c +++ b/arch/powerpc/sysdev/qe_lib/ucc_fast.c @@ -19,7 +19,7 @@ #include <linux/stddef.h> #include <linux/interrupt.h> #include <linux/err.h> -#include <linux/module.h> +#include <linux/export.h> #include <asm/io.h> #include <asm/immap_qe.h> diff --git a/arch/powerpc/sysdev/qe_lib/ucc_slow.c b/arch/powerpc/sysdev/qe_lib/ucc_slow.c index e1d6a1340157..524c0ead941d 100644 --- a/arch/powerpc/sysdev/qe_lib/ucc_slow.c +++ b/arch/powerpc/sysdev/qe_lib/ucc_slow.c @@ -19,7 +19,7 @@ #include <linux/stddef.h> #include <linux/interrupt.h> #include <linux/err.h> -#include <linux/module.h> +#include <linux/export.h> #include <asm/io.h> #include <asm/immap_qe.h> diff --git a/arch/powerpc/sysdev/qe_lib/usb.c b/arch/powerpc/sysdev/qe_lib/usb.c index 8105462078eb..9162828f5da7 100644 --- a/arch/powerpc/sysdev/qe_lib/usb.c +++ b/arch/powerpc/sysdev/qe_lib/usb.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/errno.h> +#include <linux/export.h> #include <linux/io.h> #include <asm/immap_qe.h> #include <asm/qe.h> diff --git a/arch/powerpc/sysdev/rtc_cmos_setup.c b/arch/powerpc/sysdev/rtc_cmos_setup.c index c1879ebfd4f4..9afba924e94f 100644 --- a/arch/powerpc/sysdev/rtc_cmos_setup.c +++ b/arch/powerpc/sysdev/rtc_cmos_setup.c @@ -12,6 +12,7 @@ #include <linux/platform_device.h> #include <linux/err.h> #include <linux/init.h> +#include <linux/module.h> #include <linux/mc146818rtc.h> #include <asm/prom.h> diff --git a/arch/powerpc/sysdev/scom.c b/arch/powerpc/sysdev/scom.c index b2593ce30c9b..49a3ece1c6b3 100644 --- a/arch/powerpc/sysdev/scom.c +++ b/arch/powerpc/sysdev/scom.c @@ -21,6 +21,7 @@ #include <linux/kernel.h> #include <linux/debugfs.h> #include <linux/slab.h> +#include <linux/export.h> #include <asm/prom.h> #include <asm/scom.h> diff --git a/arch/powerpc/sysdev/simple_gpio.c b/arch/powerpc/sysdev/simple_gpio.c index b6defda5ccc9..ff5e73230a36 100644 --- a/arch/powerpc/sysdev/simple_gpio.c +++ b/arch/powerpc/sysdev/simple_gpio.c @@ -13,7 +13,6 @@ #include <linux/init.h> #include <linux/kernel.h> -#include <linux/module.h> #include <linux/spinlock.h> #include <linux/types.h> #include <linux/ioport.h> diff --git a/arch/powerpc/sysdev/tsi108_dev.c b/arch/powerpc/sysdev/tsi108_dev.c index 9f51f97abb5d..2370e1c63379 100644 --- a/arch/powerpc/sysdev/tsi108_dev.c +++ b/arch/powerpc/sysdev/tsi108_dev.c @@ -16,7 +16,7 @@ #include <linux/major.h> #include <linux/delay.h> #include <linux/irq.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/of_net.h> diff --git a/arch/powerpc/sysdev/uic.c b/arch/powerpc/sysdev/uic.c index 984cd2029158..063c901b1265 100644 --- a/arch/powerpc/sysdev/uic.c +++ b/arch/powerpc/sysdev/uic.c @@ -18,7 +18,6 @@ #include <linux/stddef.h> #include <linux/sched.h> #include <linux/signal.h> -#include <linux/sysdev.h> #include <linux/device.h> #include <linux/bootmem.h> #include <linux/spinlock.h> @@ -47,7 +46,7 @@ struct uic { int index; int dcrbase; - spinlock_t lock; + raw_spinlock_t lock; /* The remapper for this UIC */ struct irq_host *irqhost; @@ -61,14 +60,14 @@ static void uic_unmask_irq(struct irq_data *d) u32 er, sr; sr = 1 << (31-src); - spin_lock_irqsave(&uic->lock, flags); + raw_spin_lock_irqsave(&uic->lock, flags); /* ack level-triggered interrupts here */ if (irqd_is_level_type(d)) mtdcr(uic->dcrbase + UIC_SR, sr); er = mfdcr(uic->dcrbase + UIC_ER); er |= sr; mtdcr(uic->dcrbase + UIC_ER, er); - spin_unlock_irqrestore(&uic->lock, flags); + raw_spin_unlock_irqrestore(&uic->lock, flags); } static void uic_mask_irq(struct irq_data *d) @@ -78,11 +77,11 @@ static void uic_mask_irq(struct irq_data *d) unsigned long flags; u32 er; - spin_lock_irqsave(&uic->lock, flags); + raw_spin_lock_irqsave(&uic->lock, flags); er = mfdcr(uic->dcrbase + UIC_ER); er &= ~(1 << (31 - src)); mtdcr(uic->dcrbase + UIC_ER, er); - spin_unlock_irqrestore(&uic->lock, flags); + raw_spin_unlock_irqrestore(&uic->lock, flags); } static void uic_ack_irq(struct irq_data *d) @@ -91,9 +90,9 @@ static void uic_ack_irq(struct irq_data *d) unsigned int src = irqd_to_hwirq(d); unsigned long flags; - spin_lock_irqsave(&uic->lock, flags); + raw_spin_lock_irqsave(&uic->lock, flags); mtdcr(uic->dcrbase + UIC_SR, 1 << (31-src)); - spin_unlock_irqrestore(&uic->lock, flags); + raw_spin_unlock_irqrestore(&uic->lock, flags); } static void uic_mask_ack_irq(struct irq_data *d) @@ -104,7 +103,7 @@ static void uic_mask_ack_irq(struct irq_data *d) u32 er, sr; sr = 1 << (31-src); - spin_lock_irqsave(&uic->lock, flags); + raw_spin_lock_irqsave(&uic->lock, flags); er = mfdcr(uic->dcrbase + UIC_ER); er &= ~sr; mtdcr(uic->dcrbase + UIC_ER, er); @@ -118,7 +117,7 @@ static void uic_mask_ack_irq(struct irq_data *d) */ if (!irqd_is_level_type(d)) mtdcr(uic->dcrbase + UIC_SR, sr); - spin_unlock_irqrestore(&uic->lock, flags); + raw_spin_unlock_irqrestore(&uic->lock, flags); } static int uic_set_irq_type(struct irq_data *d, unsigned int flow_type) @@ -152,7 +151,7 @@ static int uic_set_irq_type(struct irq_data *d, unsigned int flow_type) mask = ~(1 << (31 - src)); - spin_lock_irqsave(&uic->lock, flags); + raw_spin_lock_irqsave(&uic->lock, flags); tr = mfdcr(uic->dcrbase + UIC_TR); pr = mfdcr(uic->dcrbase + UIC_PR); tr = (tr & mask) | (trigger << (31-src)); @@ -161,7 +160,7 @@ static int uic_set_irq_type(struct irq_data *d, unsigned int flow_type) mtdcr(uic->dcrbase + UIC_PR, pr); mtdcr(uic->dcrbase + UIC_TR, tr); - spin_unlock_irqrestore(&uic->lock, flags); + raw_spin_unlock_irqrestore(&uic->lock, flags); return 0; } @@ -254,7 +253,7 @@ static struct uic * __init uic_init_one(struct device_node *node) if (! uic) return NULL; /* FIXME: panic? */ - spin_lock_init(&uic->lock); + raw_spin_lock_init(&uic->lock); indexp = of_get_property(node, "cell-index", &len); if (!indexp || (len != sizeof(u32))) { printk(KERN_ERR "uic: Device node %s has missing or invalid " diff --git a/arch/powerpc/sysdev/xics/Makefile b/arch/powerpc/sysdev/xics/Makefile index b75a6059337f..c606aa8ba60a 100644 --- a/arch/powerpc/sysdev/xics/Makefile +++ b/arch/powerpc/sysdev/xics/Makefile @@ -4,3 +4,4 @@ obj-y += xics-common.o obj-$(CONFIG_PPC_ICP_NATIVE) += icp-native.o obj-$(CONFIG_PPC_ICP_HV) += icp-hv.o obj-$(CONFIG_PPC_ICS_RTAS) += ics-rtas.o +obj-$(CONFIG_PPC_POWERNV) += ics-opal.o diff --git a/arch/powerpc/sysdev/xics/icp-hv.c b/arch/powerpc/sysdev/xics/icp-hv.c index 9518d367a64f..253dce98c16e 100644 --- a/arch/powerpc/sysdev/xics/icp-hv.c +++ b/arch/powerpc/sysdev/xics/icp-hv.c @@ -27,33 +27,50 @@ static inline unsigned int icp_hv_get_xirr(unsigned char cppr) { unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; long rc; + unsigned int ret = XICS_IRQ_SPURIOUS; rc = plpar_hcall(H_XIRR, retbuf, cppr); - if (rc != H_SUCCESS) - panic(" bad return code xirr - rc = %lx\n", rc); - return (unsigned int)retbuf[0]; -} + if (rc == H_SUCCESS) { + ret = (unsigned int)retbuf[0]; + } else { + pr_err("%s: bad return code xirr cppr=0x%x returned %ld\n", + __func__, cppr, rc); + WARN_ON_ONCE(1); + } -static inline void icp_hv_set_xirr(unsigned int value) -{ - long rc = plpar_hcall_norets(H_EOI, value); - if (rc != H_SUCCESS) - panic("bad return code EOI - rc = %ld, value=%x\n", rc, value); + return ret; } static inline void icp_hv_set_cppr(u8 value) { long rc = plpar_hcall_norets(H_CPPR, value); - if (rc != H_SUCCESS) - panic("bad return code cppr - rc = %lx\n", rc); + if (rc != H_SUCCESS) { + pr_err("%s: bad return code cppr cppr=0x%x returned %ld\n", + __func__, value, rc); + WARN_ON_ONCE(1); + } +} + +static inline void icp_hv_set_xirr(unsigned int value) +{ + long rc = plpar_hcall_norets(H_EOI, value); + if (rc != H_SUCCESS) { + pr_err("%s: bad return code eoi xirr=0x%x returned %ld\n", + __func__, value, rc); + WARN_ON_ONCE(1); + icp_hv_set_cppr(value >> 24); + } } static inline void icp_hv_set_qirr(int n_cpu , u8 value) { - long rc = plpar_hcall_norets(H_IPI, get_hard_smp_processor_id(n_cpu), - value); - if (rc != H_SUCCESS) - panic("bad return code qirr - rc = %lx\n", rc); + int hw_cpu = get_hard_smp_processor_id(n_cpu); + long rc = plpar_hcall_norets(H_IPI, hw_cpu, value); + if (rc != H_SUCCESS) { + pr_err("%s: bad return code qirr cpu=%d hw_cpu=%d mfrr=0x%x " + "returned %ld\n", __func__, n_cpu, hw_cpu, value, rc); + WARN_ON_ONCE(1); + } } static void icp_hv_eoi(struct irq_data *d) diff --git a/arch/powerpc/sysdev/xics/icp-native.c b/arch/powerpc/sysdev/xics/icp-native.c index 50e32afe392e..4c79b6fbee1c 100644 --- a/arch/powerpc/sysdev/xics/icp-native.c +++ b/arch/powerpc/sysdev/xics/icp-native.c @@ -276,7 +276,7 @@ static const struct icp_ops icp_native_ops = { #endif }; -int icp_native_init(void) +int __init icp_native_init(void) { struct device_node *np; u32 indx = 0; diff --git a/arch/powerpc/sysdev/xics/ics-opal.c b/arch/powerpc/sysdev/xics/ics-opal.c new file mode 100644 index 000000000000..f7e8609df0d5 --- /dev/null +++ b/arch/powerpc/sysdev/xics/ics-opal.c @@ -0,0 +1,244 @@ +/* + * ICS backend for OPAL managed interrupts. + * + * Copyright 2011 IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#undef DEBUG + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/irq.h> +#include <linux/smp.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/cpu.h> +#include <linux/of.h> +#include <linux/spinlock.h> +#include <linux/msi.h> + +#include <asm/prom.h> +#include <asm/smp.h> +#include <asm/machdep.h> +#include <asm/irq.h> +#include <asm/errno.h> +#include <asm/xics.h> +#include <asm/opal.h> +#include <asm/firmware.h> + +static int ics_opal_mangle_server(int server) +{ + /* No link for now */ + return server << 2; +} + +static int ics_opal_unmangle_server(int server) +{ + /* No link for now */ + return server >> 2; +} + +static void ics_opal_unmask_irq(struct irq_data *d) +{ + unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d); + int64_t rc; + int server; + + pr_devel("ics-hal: unmask virq %d [hw 0x%x]\n", d->irq, hw_irq); + + if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS) + return; + + server = xics_get_irq_server(d->irq, d->affinity, 0); + server = ics_opal_mangle_server(server); + + rc = opal_set_xive(hw_irq, server, DEFAULT_PRIORITY); + if (rc != OPAL_SUCCESS) + pr_err("%s: opal_set_xive(irq=%d [hw 0x%x] server=%x)" + " error %lld\n", + __func__, d->irq, hw_irq, server, rc); +} + +static unsigned int ics_opal_startup(struct irq_data *d) +{ +#ifdef CONFIG_PCI_MSI + /* + * The generic MSI code returns with the interrupt disabled on the + * card, using the MSI mask bits. Firmware doesn't appear to unmask + * at that level, so we do it here by hand. + */ + if (d->msi_desc) + unmask_msi_irq(d); +#endif + + /* unmask it */ + ics_opal_unmask_irq(d); + return 0; +} + +static void ics_opal_mask_real_irq(unsigned int hw_irq) +{ + int server = ics_opal_mangle_server(xics_default_server); + int64_t rc; + + if (hw_irq == XICS_IPI) + return; + + /* Have to set XIVE to 0xff to be able to remove a slot */ + rc = opal_set_xive(hw_irq, server, 0xff); + if (rc != OPAL_SUCCESS) + pr_err("%s: opal_set_xive(0xff) irq=%u returned %lld\n", + __func__, hw_irq, rc); +} + +static void ics_opal_mask_irq(struct irq_data *d) +{ + unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d); + + pr_devel("ics-hal: mask virq %d [hw 0x%x]\n", d->irq, hw_irq); + + if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS) + return; + ics_opal_mask_real_irq(hw_irq); +} + +static int ics_opal_set_affinity(struct irq_data *d, + const struct cpumask *cpumask, + bool force) +{ + unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d); + int16_t server; + int8_t priority; + int64_t rc; + int wanted_server; + + if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS) + return -1; + + rc = opal_get_xive(hw_irq, &server, &priority); + if (rc != OPAL_SUCCESS) { + pr_err("%s: opal_set_xive(irq=%d [hw 0x%x] server=%x)" + " error %lld\n", + __func__, d->irq, hw_irq, server, rc); + return -1; + } + + wanted_server = xics_get_irq_server(d->irq, cpumask, 1); + if (wanted_server < 0) { + char cpulist[128]; + cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask); + pr_warning("%s: No online cpus in the mask %s for irq %d\n", + __func__, cpulist, d->irq); + return -1; + } + server = ics_opal_mangle_server(wanted_server); + + pr_devel("ics-hal: set-affinity irq %d [hw 0x%x] server: 0x%x/0x%x\n", + d->irq, hw_irq, wanted_server, server); + + rc = opal_set_xive(hw_irq, server, priority); + if (rc != OPAL_SUCCESS) { + pr_err("%s: opal_set_xive(irq=%d [hw 0x%x] server=%x)" + " error %lld\n", + __func__, d->irq, hw_irq, server, rc); + return -1; + } + return 0; +} + +static struct irq_chip ics_opal_irq_chip = { + .name = "OPAL ICS", + .irq_startup = ics_opal_startup, + .irq_mask = ics_opal_mask_irq, + .irq_unmask = ics_opal_unmask_irq, + .irq_eoi = NULL, /* Patched at init time */ + .irq_set_affinity = ics_opal_set_affinity +}; + +static int ics_opal_map(struct ics *ics, unsigned int virq); +static void ics_opal_mask_unknown(struct ics *ics, unsigned long vec); +static long ics_opal_get_server(struct ics *ics, unsigned long vec); + +static int ics_opal_host_match(struct ics *ics, struct device_node *node) +{ + return 1; +} + +/* Only one global & state struct ics */ +static struct ics ics_hal = { + .map = ics_opal_map, + .mask_unknown = ics_opal_mask_unknown, + .get_server = ics_opal_get_server, + .host_match = ics_opal_host_match, +}; + +static int ics_opal_map(struct ics *ics, unsigned int virq) +{ + unsigned int hw_irq = (unsigned int)virq_to_hw(virq); + int64_t rc; + int16_t server; + int8_t priority; + + if (WARN_ON(hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)) + return -EINVAL; + + /* Check if HAL knows about this interrupt */ + rc = opal_get_xive(hw_irq, &server, &priority); + if (rc != OPAL_SUCCESS) + return -ENXIO; + + irq_set_chip_and_handler(virq, &ics_opal_irq_chip, handle_fasteoi_irq); + irq_set_chip_data(virq, &ics_hal); + + return 0; +} + +static void ics_opal_mask_unknown(struct ics *ics, unsigned long vec) +{ + int64_t rc; + int16_t server; + int8_t priority; + + /* Check if HAL knows about this interrupt */ + rc = opal_get_xive(vec, &server, &priority); + if (rc != OPAL_SUCCESS) + return; + + ics_opal_mask_real_irq(vec); +} + +static long ics_opal_get_server(struct ics *ics, unsigned long vec) +{ + int64_t rc; + int16_t server; + int8_t priority; + + /* Check if HAL knows about this interrupt */ + rc = opal_get_xive(vec, &server, &priority); + if (rc != OPAL_SUCCESS) + return -1; + return ics_opal_unmangle_server(server); +} + +int __init ics_opal_init(void) +{ + if (!firmware_has_feature(FW_FEATURE_OPAL)) + return -ENODEV; + + /* We need to patch our irq chip's EOI to point to the + * right ICP + */ + ics_opal_irq_chip.irq_eoi = icp_ops->eoi; + + /* Register ourselves */ + xics_register_ics(&ics_hal); + + pr_info("ICS OPAL backend registered\n"); + + return 0; +} diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c index 445c5a01b766..d72eda6a4c05 100644 --- a/arch/powerpc/sysdev/xics/xics-common.c +++ b/arch/powerpc/sysdev/xics/xics-common.c @@ -134,11 +134,10 @@ static void xics_request_ipi(void) BUG_ON(ipi == NO_IRQ); /* - * IPIs are marked IRQF_DISABLED as they must run with irqs - * disabled, and PERCPU. The handler was set in map. + * IPIs are marked IRQF_PERCPU. The handler was set in map. */ BUG_ON(request_irq(ipi, icp_ops->ipi_action, - IRQF_DISABLED|IRQF_PERCPU, "IPI", NULL)); + IRQF_PERCPU | IRQF_NO_THREAD, "IPI", NULL)); } int __init xics_smp_probe(void) @@ -409,14 +408,10 @@ void __init xics_init(void) int rc = -1; /* Fist locate ICP */ -#ifdef CONFIG_PPC_ICP_HV if (firmware_has_feature(FW_FEATURE_LPAR)) rc = icp_hv_init(); -#endif -#ifdef CONFIG_PPC_ICP_NATIVE if (rc < 0) rc = icp_native_init(); -#endif if (rc < 0) { pr_warning("XICS: Cannot find a Presentation Controller !\n"); return; @@ -429,9 +424,9 @@ void __init xics_init(void) xics_ipi_chip.irq_eoi = icp_ops->eoi; /* Now locate ICS */ -#ifdef CONFIG_PPC_ICS_RTAS rc = ics_rtas_init(); -#endif + if (rc < 0) + rc = ics_opal_init(); if (rc < 0) pr_warning("XICS: Cannot find a Source Controller !\n"); |