diff options
Diffstat (limited to 'arch/powerpc/platforms')
52 files changed, 1347 insertions, 687 deletions
diff --git a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c index a6ce80566625..da9b20a63769 100644 --- a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c +++ b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c @@ -79,7 +79,7 @@ cpld_unmask_irq(unsigned int irq) } static struct irq_chip cpld_pic = { - .typename = " CPLD PIC ", + .name = " CPLD PIC ", .mask = cpld_mask_irq, .ack = cpld_mask_irq, .unmask = cpld_unmask_irq, @@ -132,7 +132,7 @@ static int cpld_pic_host_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hw) { - get_irq_desc(virq)->status |= IRQ_LEVEL; + irq_to_desc(virq)->status |= IRQ_LEVEL; set_irq_chip_and_handler(virq, &cpld_pic, handle_level_irq); return 0; } diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig index 8b8e9560a315..47ea1be1481b 100644 --- a/arch/powerpc/platforms/52xx/Kconfig +++ b/arch/powerpc/platforms/52xx/Kconfig @@ -62,3 +62,8 @@ config PPC_MPC5200_GPIO select GENERIC_GPIO help Enable gpiolib support for mpc5200 based boards + +config PPC_MPC5200_LPBFIFO + tristate "MPC5200 LocalPlus bus FIFO driver" + depends on PPC_MPC52xx + select PPC_BESTCOMM_GEN_BD diff --git a/arch/powerpc/platforms/52xx/Makefile b/arch/powerpc/platforms/52xx/Makefile index bfd4f52cf3dd..2bc8cd0c5cfc 100644 --- a/arch/powerpc/platforms/52xx/Makefile +++ b/arch/powerpc/platforms/52xx/Makefile @@ -15,3 +15,4 @@ ifeq ($(CONFIG_PPC_LITE5200),y) endif obj-$(CONFIG_PPC_MPC5200_GPIO) += mpc52xx_gpio.o +obj-$(CONFIG_PPC_MPC5200_LPBFIFO) += mpc52xx_lpbfifo.o diff --git a/arch/powerpc/platforms/52xx/media5200.c b/arch/powerpc/platforms/52xx/media5200.c index 68e4f1696d14..85001a4cbdff 100644 --- a/arch/powerpc/platforms/52xx/media5200.c +++ b/arch/powerpc/platforms/52xx/media5200.c @@ -74,7 +74,7 @@ static void media5200_irq_mask(unsigned int virq) } static struct irq_chip media5200_irq_chip = { - .typename = "Media5200 FPGA", + .name = "Media5200 FPGA", .unmask = media5200_irq_unmask, .mask = media5200_irq_mask, .mask_ack = media5200_irq_mask, @@ -114,7 +114,7 @@ void media5200_irq_cascade(unsigned int virq, struct irq_desc *desc) static int media5200_irq_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hw) { - struct irq_desc *desc = get_irq_desc(virq); + struct irq_desc *desc = irq_to_desc(virq); pr_debug("%s: h=%p, virq=%i, hwirq=%i\n", __func__, h, virq, (int)hw); set_irq_chip_data(virq, &media5200_irq); diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c index bfbcd418e690..e1398d21a586 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c @@ -46,13 +46,17 @@ * the output mode. This driver does not change the output mode setting. */ +#include <linux/device.h> #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/io.h> +#include <linux/list.h> +#include <linux/mutex.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/of_gpio.h> #include <linux/kernel.h> +#include <asm/div64.h> #include <asm/mpc52xx.h> MODULE_DESCRIPTION("Freescale MPC52xx gpt driver"); @@ -68,16 +72,21 @@ MODULE_LICENSE("GPL"); * @irqhost: Pointer to irq_host instance; used when IRQ mode is supported */ struct mpc52xx_gpt_priv { + struct list_head list; /* List of all GPT devices */ struct device *dev; struct mpc52xx_gpt __iomem *regs; spinlock_t lock; struct irq_host *irqhost; + u32 ipb_freq; #if defined(CONFIG_GPIOLIB) struct of_gpio_chip of_gc; #endif }; +LIST_HEAD(mpc52xx_gpt_list); +DEFINE_MUTEX(mpc52xx_gpt_list_mutex); + #define MPC52xx_GPT_MODE_MS_MASK (0x07) #define MPC52xx_GPT_MODE_MS_IC (0x01) #define MPC52xx_GPT_MODE_MS_OC (0x02) @@ -88,6 +97,9 @@ struct mpc52xx_gpt_priv { #define MPC52xx_GPT_MODE_GPIO_OUT_LOW (0x20) #define MPC52xx_GPT_MODE_GPIO_OUT_HIGH (0x30) +#define MPC52xx_GPT_MODE_COUNTER_ENABLE (0x1000) +#define MPC52xx_GPT_MODE_CONTINUOUS (0x0400) +#define MPC52xx_GPT_MODE_OPEN_DRAIN (0x0200) #define MPC52xx_GPT_MODE_IRQ_EN (0x0100) #define MPC52xx_GPT_MODE_ICT_MASK (0x030000) @@ -149,7 +161,7 @@ static int mpc52xx_gpt_irq_set_type(unsigned int virq, unsigned int flow_type) } static struct irq_chip mpc52xx_gpt_irq_chip = { - .typename = "MPC52xx GPT", + .name = "MPC52xx GPT", .unmask = mpc52xx_gpt_irq_unmask, .mask = mpc52xx_gpt_irq_mask, .ack = mpc52xx_gpt_irq_ack, @@ -190,7 +202,7 @@ static int mpc52xx_gpt_irq_xlate(struct irq_host *h, struct device_node *ct, dev_dbg(gpt->dev, "%s: flags=%i\n", __func__, intspec[0]); - if ((intsize < 1) || (intspec[0] < 1) || (intspec[0] > 3)) { + if ((intsize < 1) || (intspec[0] > 3)) { dev_err(gpt->dev, "bad irq specifier in %s\n", ct->full_name); return -EINVAL; } @@ -211,13 +223,11 @@ mpc52xx_gpt_irq_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node) { int cascade_virq; unsigned long flags; - - /* Only setup cascaded IRQ if device tree claims the GPT is - * an interrupt controller */ - if (!of_find_property(node, "interrupt-controller", NULL)) - return; + u32 mode; cascade_virq = irq_of_parse_and_map(node, 0); + if (!cascade_virq) + return; gpt->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR, 1, &mpc52xx_gpt_irq_ops, -1); @@ -227,14 +237,16 @@ mpc52xx_gpt_irq_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node) } gpt->irqhost->host_data = gpt; - set_irq_data(cascade_virq, gpt); set_irq_chained_handler(cascade_virq, mpc52xx_gpt_irq_cascade); - /* Set to Input Capture mode */ + /* If the GPT is currently disabled, then change it to be in Input + * Capture mode. If the mode is non-zero, then the pin could be + * already in use for something. */ spin_lock_irqsave(&gpt->lock, flags); - clrsetbits_be32(&gpt->regs->mode, MPC52xx_GPT_MODE_MS_MASK, - MPC52xx_GPT_MODE_MS_IC); + mode = in_be32(&gpt->regs->mode); + if ((mode & MPC52xx_GPT_MODE_MS_MASK) == 0) + out_be32(&gpt->regs->mode, mode | MPC52xx_GPT_MODE_MS_IC); spin_unlock_irqrestore(&gpt->lock, flags); dev_dbg(gpt->dev, "%s() complete. virq=%i\n", __func__, cascade_virq); @@ -335,6 +347,102 @@ static void mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *p, struct device_node *np) { } #endif /* defined(CONFIG_GPIOLIB) */ +/*********************************************************************** + * Timer API + */ + +/** + * mpc52xx_gpt_from_irq - Return the GPT device associated with an IRQ number + * @irq: irq of timer. + */ +struct mpc52xx_gpt_priv *mpc52xx_gpt_from_irq(int irq) +{ + struct mpc52xx_gpt_priv *gpt; + struct list_head *pos; + + /* Iterate over the list of timers looking for a matching device */ + mutex_lock(&mpc52xx_gpt_list_mutex); + list_for_each(pos, &mpc52xx_gpt_list) { + gpt = container_of(pos, struct mpc52xx_gpt_priv, list); + if (gpt->irqhost && irq == irq_linear_revmap(gpt->irqhost, 0)) { + mutex_unlock(&mpc52xx_gpt_list_mutex); + return gpt; + } + } + mutex_unlock(&mpc52xx_gpt_list_mutex); + + return NULL; +} +EXPORT_SYMBOL(mpc52xx_gpt_from_irq); + +/** + * mpc52xx_gpt_start_timer - Set and enable the GPT timer + * @gpt: Pointer to gpt private data structure + * @period: period of timer + * @continuous: set to 1 to make timer continuous free running + * + * An interrupt will be generated every time the timer fires + */ +int mpc52xx_gpt_start_timer(struct mpc52xx_gpt_priv *gpt, int period, + int continuous) +{ + u32 clear, set; + u64 clocks; + u32 prescale; + unsigned long flags; + + clear = MPC52xx_GPT_MODE_MS_MASK | MPC52xx_GPT_MODE_CONTINUOUS; + set = MPC52xx_GPT_MODE_MS_GPIO | MPC52xx_GPT_MODE_COUNTER_ENABLE; + if (continuous) + set |= MPC52xx_GPT_MODE_CONTINUOUS; + + /* Determine the number of clocks in the requested period. 64 bit + * arithmatic is done here to preserve the precision until the value + * is scaled back down into the u32 range. Period is in 'ns', bus + * frequency is in Hz. */ + clocks = (u64)period * (u64)gpt->ipb_freq; + do_div(clocks, 1000000000); /* Scale it down to ns range */ + + /* This device cannot handle a clock count greater than 32 bits */ + if (clocks > 0xffffffff) + return -EINVAL; + + /* Calculate the prescaler and count values from the clocks value. + * 'clocks' is the number of clock ticks in the period. The timer + * has 16 bit precision and a 16 bit prescaler. Prescaler is + * calculated by integer dividing the clocks by 0x10000 (shifting + * down 16 bits) to obtain the smallest possible divisor for clocks + * to get a 16 bit count value. + * + * Note: the prescale register is '1' based, not '0' based. ie. a + * value of '1' means divide the clock by one. 0xffff divides the + * clock by 0xffff. '0x0000' does not divide by zero, but wraps + * around and divides by 0x10000. That is why prescale must be + * a u32 variable, not a u16, for this calculation. */ + prescale = (clocks >> 16) + 1; + do_div(clocks, prescale); + if (clocks > 0xffff) { + pr_err("calculation error; prescale:%x clocks:%llx\n", + prescale, clocks); + return -EINVAL; + } + + /* Set and enable the timer */ + spin_lock_irqsave(&gpt->lock, flags); + out_be32(&gpt->regs->count, prescale << 16 | clocks); + clrsetbits_be32(&gpt->regs->mode, clear, set); + spin_unlock_irqrestore(&gpt->lock, flags); + + return 0; +} +EXPORT_SYMBOL(mpc52xx_gpt_start_timer); + +void mpc52xx_gpt_stop_timer(struct mpc52xx_gpt_priv *gpt) +{ + clrbits32(&gpt->regs->mode, MPC52xx_GPT_MODE_COUNTER_ENABLE); +} +EXPORT_SYMBOL(mpc52xx_gpt_stop_timer); + /* --------------------------------------------------------------------- * of_platform bus binding code */ @@ -349,6 +457,7 @@ static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev, spin_lock_init(&gpt->lock); gpt->dev = &ofdev->dev; + gpt->ipb_freq = mpc5xxx_get_bus_frequency(ofdev->node); gpt->regs = of_iomap(ofdev->node, 0); if (!gpt->regs) { kfree(gpt); @@ -360,6 +469,10 @@ static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev, mpc52xx_gpt_gpio_setup(gpt, ofdev->node); mpc52xx_gpt_irq_setup(gpt, ofdev->node); + mutex_lock(&mpc52xx_gpt_list_mutex); + list_add(&gpt->list, &mpc52xx_gpt_list); + mutex_unlock(&mpc52xx_gpt_list_mutex); + return 0; } diff --git a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c new file mode 100644 index 000000000000..929d017535a3 --- /dev/null +++ b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c @@ -0,0 +1,560 @@ +/* + * LocalPlus Bus FIFO driver for the Freescale MPC52xx. + * + * Copyright (C) 2009 Secret Lab Technologies Ltd. + * + * This file is released under the GPLv2 + * + * Todo: + * - Add support for multiple requests to be queued. + */ + +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/spinlock.h> +#include <asm/io.h> +#include <asm/prom.h> +#include <asm/mpc52xx.h> +#include <asm/time.h> + +#include <sysdev/bestcomm/bestcomm.h> +#include <sysdev/bestcomm/bestcomm_priv.h> +#include <sysdev/bestcomm/gen_bd.h> + +MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); +MODULE_DESCRIPTION("MPC5200 LocalPlus FIFO device driver"); +MODULE_LICENSE("GPL"); + +#define LPBFIFO_REG_PACKET_SIZE (0x00) +#define LPBFIFO_REG_START_ADDRESS (0x04) +#define LPBFIFO_REG_CONTROL (0x08) +#define LPBFIFO_REG_ENABLE (0x0C) +#define LPBFIFO_REG_BYTES_DONE_STATUS (0x14) +#define LPBFIFO_REG_FIFO_DATA (0x40) +#define LPBFIFO_REG_FIFO_STATUS (0x44) +#define LPBFIFO_REG_FIFO_CONTROL (0x48) +#define LPBFIFO_REG_FIFO_ALARM (0x4C) + +struct mpc52xx_lpbfifo { + struct device *dev; + phys_addr_t regs_phys; + void __iomem *regs; + int irq; + spinlock_t lock; + + struct bcom_task *bcom_tx_task; + struct bcom_task *bcom_rx_task; + struct bcom_task *bcom_cur_task; + + /* Current state data */ + struct mpc52xx_lpbfifo_request *req; + int dma_irqs_enabled; +}; + +/* The MPC5200 has only one fifo, so only need one instance structure */ +static struct mpc52xx_lpbfifo lpbfifo; + +/** + * mpc52xx_lpbfifo_kick - Trigger the next block of data to be transfered + */ +static void mpc52xx_lpbfifo_kick(struct mpc52xx_lpbfifo_request *req) +{ + size_t transfer_size = req->size - req->pos; + struct bcom_bd *bd; + void __iomem *reg; + u32 *data; + int i; + int bit_fields; + int dma = !(req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA); + int write = req->flags & MPC52XX_LPBFIFO_FLAG_WRITE; + int poll_dma = req->flags & MPC52XX_LPBFIFO_FLAG_POLL_DMA; + + /* Set and clear the reset bits; is good practice in User Manual */ + out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000); + + /* set master enable bit */ + out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x00000001); + if (!dma) { + /* While the FIFO can be setup for transfer sizes as large as + * 16M-1, the FIFO itself is only 512 bytes deep and it does + * not generate interrupts for FIFO full events (only transfer + * complete will raise an IRQ). Therefore when not using + * Bestcomm to drive the FIFO it needs to either be polled, or + * transfers need to constrained to the size of the fifo. + * + * This driver restricts the size of the transfer + */ + if (transfer_size > 512) + transfer_size = 512; + + /* Load the FIFO with data */ + if (write) { + reg = lpbfifo.regs + LPBFIFO_REG_FIFO_DATA; + data = req->data + req->pos; + for (i = 0; i < transfer_size; i += 4) + out_be32(reg, *data++); + } + + /* Unmask both error and completion irqs */ + out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x00000301); + } else { + /* Choose the correct direction + * + * Configure the watermarks so DMA will always complete correctly. + * It may be worth experimenting with the ALARM value to see if + * there is a performance impacit. However, if it is wrong there + * is a risk of DMA not transferring the last chunk of data + */ + if (write) { + out_be32(lpbfifo.regs + LPBFIFO_REG_FIFO_ALARM, 0x1e4); + out_8(lpbfifo.regs + LPBFIFO_REG_FIFO_CONTROL, 7); + lpbfifo.bcom_cur_task = lpbfifo.bcom_tx_task; + } else { + out_be32(lpbfifo.regs + LPBFIFO_REG_FIFO_ALARM, 0x1ff); + out_8(lpbfifo.regs + LPBFIFO_REG_FIFO_CONTROL, 0); + lpbfifo.bcom_cur_task = lpbfifo.bcom_rx_task; + + if (poll_dma) { + if (lpbfifo.dma_irqs_enabled) { + disable_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task)); + lpbfifo.dma_irqs_enabled = 0; + } + } else { + if (!lpbfifo.dma_irqs_enabled) { + enable_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task)); + lpbfifo.dma_irqs_enabled = 1; + } + } + } + + bd = bcom_prepare_next_buffer(lpbfifo.bcom_cur_task); + bd->status = transfer_size; + if (!write) { + /* + * In the DMA read case, the DMA doesn't complete, + * possibly due to incorrect watermarks in the ALARM + * and CONTROL regs. For now instead of trying to + * determine the right watermarks that will make this + * work, just increase the number of bytes the FIFO is + * expecting. + * + * When submitting another operation, the FIFO will get + * reset, so the condition of the FIFO waiting for a + * non-existent 4 bytes will get cleared. + */ + transfer_size += 4; /* BLECH! */ + } + bd->data[0] = req->data_phys + req->pos; + bcom_submit_next_buffer(lpbfifo.bcom_cur_task, NULL); + + /* error irq & master enabled bit */ + bit_fields = 0x00000201; + + /* Unmask irqs */ + if (write && (!poll_dma)) + bit_fields |= 0x00000100; /* completion irq too */ + out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, bit_fields); + } + + /* Set transfer size, width, chip select and READ mode */ + out_be32(lpbfifo.regs + LPBFIFO_REG_START_ADDRESS, + req->offset + req->pos); + out_be32(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, transfer_size); + + bit_fields = req->cs << 24 | 0x000008; + if (!write) + bit_fields |= 0x010000; /* read mode */ + out_be32(lpbfifo.regs + LPBFIFO_REG_CONTROL, bit_fields); + + /* Kick it off */ + out_8(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, 0x01); + if (dma) + bcom_enable(lpbfifo.bcom_cur_task); +} + +/** + * mpc52xx_lpbfifo_irq - IRQ handler for LPB FIFO + * + * On transmit, the dma completion irq triggers before the fifo completion + * triggers. Handle the dma completion here instead of the LPB FIFO Bestcomm + * task completion irq becuase everyting is not really done until the LPB FIFO + * completion irq triggers. + * + * In other words: + * For DMA, on receive, the "Fat Lady" is the bestcom completion irq. on + * transmit, the fifo completion irq is the "Fat Lady". The opera (or in this + * case the DMA/FIFO operation) is not finished until the "Fat Lady" sings. + * + * Reasons for entering this routine: + * 1) PIO mode rx and tx completion irq + * 2) DMA interrupt mode tx completion irq + * 3) DMA polled mode tx + * + * Exit conditions: + * 1) Transfer aborted + * 2) FIFO complete without DMA; more data to do + * 3) FIFO complete without DMA; all data transfered + * 4) FIFO complete using DMA + * + * Condition 1 can occur regardless of whether or not DMA is used. + * It requires executing the callback to report the error and exiting + * immediately. + * + * Condition 2 requires programming the FIFO with the next block of data + * + * Condition 3 requires executing the callback to report completion + * + * Condition 4 means the same as 3, except that we also retrieve the bcom + * buffer so DMA doesn't get clogged up. + * + * To make things trickier, the spinlock must be dropped before + * executing the callback, otherwise we could end up with a deadlock + * or nested spinlock condition. The out path is non-trivial, so + * extra fiddling is done to make sure all paths lead to the same + * outbound code. + */ +static irqreturn_t mpc52xx_lpbfifo_irq(int irq, void *dev_id) +{ + struct mpc52xx_lpbfifo_request *req; + u32 status = in_8(lpbfifo.regs + LPBFIFO_REG_BYTES_DONE_STATUS); + void __iomem *reg; + u32 *data; + int count, i; + int do_callback = 0; + u32 ts; + unsigned long flags; + int dma, write, poll_dma; + + spin_lock_irqsave(&lpbfifo.lock, flags); + ts = get_tbl(); + + req = lpbfifo.req; + if (!req) { + spin_unlock_irqrestore(&lpbfifo.lock, flags); + pr_err("bogus LPBFIFO IRQ\n"); + return IRQ_HANDLED; + } + + dma = !(req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA); + write = req->flags & MPC52XX_LPBFIFO_FLAG_WRITE; + poll_dma = req->flags & MPC52XX_LPBFIFO_FLAG_POLL_DMA; + + if (dma && !write) { + spin_unlock_irqrestore(&lpbfifo.lock, flags); + pr_err("bogus LPBFIFO IRQ (dma and not writting)\n"); + return IRQ_HANDLED; + } + + if ((status & 0x01) == 0) { + goto out; + } + + /* check abort bit */ + if (status & 0x10) { + out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000); + do_callback = 1; + goto out; + } + + /* Read result from hardware */ + count = in_be32(lpbfifo.regs + LPBFIFO_REG_BYTES_DONE_STATUS); + count &= 0x00ffffff; + + if (!dma && !write) { + /* copy the data out of the FIFO */ + reg = lpbfifo.regs + LPBFIFO_REG_FIFO_DATA; + data = req->data + req->pos; + for (i = 0; i < count; i += 4) + *data++ = in_be32(reg); + } + + /* Update transfer position and count */ + req->pos += count; + + /* Decide what to do next */ + if (req->size - req->pos) + mpc52xx_lpbfifo_kick(req); /* more work to do */ + else + do_callback = 1; + + out: + /* Clear the IRQ */ + out_8(lpbfifo.regs + LPBFIFO_REG_BYTES_DONE_STATUS, 0x01); + + if (dma && (status & 0x11)) { + /* + * Count the DMA as complete only when the FIFO completion + * status or abort bits are set. + * + * (status & 0x01) should always be the case except sometimes + * when using polled DMA. + * + * (status & 0x10) {transfer aborted}: This case needs more + * testing. + */ + bcom_retrieve_buffer(lpbfifo.bcom_cur_task, &status, NULL); + } + req->last_byte = ((u8 *)req->data)[req->size - 1]; + + /* When the do_callback flag is set; it means the transfer is finished + * so set the FIFO as idle */ + if (do_callback) + lpbfifo.req = NULL; + + if (irq != 0) /* don't increment on polled case */ + req->irq_count++; + + req->irq_ticks += get_tbl() - ts; + spin_unlock_irqrestore(&lpbfifo.lock, flags); + + /* Spinlock is released; it is now safe to call the callback */ + if (do_callback && req->callback) + req->callback(req); + + return IRQ_HANDLED; +} + +/** + * mpc52xx_lpbfifo_bcom_irq - IRQ handler for LPB FIFO Bestcomm task + * + * Only used when receiving data. + */ +static irqreturn_t mpc52xx_lpbfifo_bcom_irq(int irq, void *dev_id) +{ + struct mpc52xx_lpbfifo_request *req; + unsigned long flags; + u32 status; + u32 ts; + + spin_lock_irqsave(&lpbfifo.lock, flags); + ts = get_tbl(); + + req = lpbfifo.req; + if (!req || (req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA)) { + spin_unlock_irqrestore(&lpbfifo.lock, flags); + return IRQ_HANDLED; + } + + if (irq != 0) /* don't increment on polled case */ + req->irq_count++; + + if (!bcom_buffer_done(lpbfifo.bcom_cur_task)) { + spin_unlock_irqrestore(&lpbfifo.lock, flags); + + req->buffer_not_done_cnt++; + if ((req->buffer_not_done_cnt % 1000) == 0) + pr_err("transfer stalled\n"); + + return IRQ_HANDLED; + } + + bcom_retrieve_buffer(lpbfifo.bcom_cur_task, &status, NULL); + + req->last_byte = ((u8 *)req->data)[req->size - 1]; + + req->pos = status & 0x00ffffff; + + /* Mark the FIFO as idle */ + lpbfifo.req = NULL; + + /* Release the lock before calling out to the callback. */ + req->irq_ticks += get_tbl() - ts; + spin_unlock_irqrestore(&lpbfifo.lock, flags); + + if (req->callback) + req->callback(req); + + return IRQ_HANDLED; +} + +/** + * mpc52xx_lpbfifo_bcom_poll - Poll for DMA completion + */ +void mpc52xx_lpbfifo_poll(void) +{ + struct mpc52xx_lpbfifo_request *req = lpbfifo.req; + int dma = !(req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA); + int write = req->flags & MPC52XX_LPBFIFO_FLAG_WRITE; + + /* + * For more information, see comments on the "Fat Lady" + */ + if (dma && write) + mpc52xx_lpbfifo_irq(0, NULL); + else + mpc52xx_lpbfifo_bcom_irq(0, NULL); +} +EXPORT_SYMBOL(mpc52xx_lpbfifo_poll); + +/** + * mpc52xx_lpbfifo_submit - Submit an LPB FIFO transfer request. + * @req: Pointer to request structure + */ +int mpc52xx_lpbfifo_submit(struct mpc52xx_lpbfifo_request *req) +{ + unsigned long flags; + + if (!lpbfifo.regs) + return -ENODEV; + + spin_lock_irqsave(&lpbfifo.lock, flags); + + /* If the req pointer is already set, then a transfer is in progress */ + if (lpbfifo.req) { + spin_unlock_irqrestore(&lpbfifo.lock, flags); + return -EBUSY; + } + + /* Setup the transfer */ + lpbfifo.req = req; + req->irq_count = 0; + req->irq_ticks = 0; + req->buffer_not_done_cnt = 0; + req->pos = 0; + + mpc52xx_lpbfifo_kick(req); + spin_unlock_irqrestore(&lpbfifo.lock, flags); + return 0; +} +EXPORT_SYMBOL(mpc52xx_lpbfifo_submit); + +void mpc52xx_lpbfifo_abort(struct mpc52xx_lpbfifo_request *req) +{ + unsigned long flags; + + spin_lock_irqsave(&lpbfifo.lock, flags); + if (lpbfifo.req == req) { + /* Put it into reset and clear the state */ + bcom_gen_bd_rx_reset(lpbfifo.bcom_rx_task); + bcom_gen_bd_tx_reset(lpbfifo.bcom_tx_task); + out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000); + lpbfifo.req = NULL; + } + spin_unlock_irqrestore(&lpbfifo.lock, flags); +} +EXPORT_SYMBOL(mpc52xx_lpbfifo_abort); + +static int __devinit +mpc52xx_lpbfifo_probe(struct of_device *op, const struct of_device_id *match) +{ + struct resource res; + int rc = -ENOMEM; + + if (lpbfifo.dev != NULL) + return -ENOSPC; + + lpbfifo.irq = irq_of_parse_and_map(op->node, 0); + if (!lpbfifo.irq) + return -ENODEV; + + if (of_address_to_resource(op->node, 0, &res)) + return -ENODEV; + lpbfifo.regs_phys = res.start; + lpbfifo.regs = of_iomap(op->node, 0); + if (!lpbfifo.regs) + return -ENOMEM; + + spin_lock_init(&lpbfifo.lock); + + /* Put FIFO into reset */ + out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000); + + /* Register the interrupt handler */ + rc = request_irq(lpbfifo.irq, mpc52xx_lpbfifo_irq, 0, + "mpc52xx-lpbfifo", &lpbfifo); + if (rc) + goto err_irq; + + /* Request the Bestcomm receive (fifo --> memory) task and IRQ */ + lpbfifo.bcom_rx_task = + bcom_gen_bd_rx_init(2, res.start + LPBFIFO_REG_FIFO_DATA, + BCOM_INITIATOR_SCLPC, BCOM_IPR_SCLPC, + 16*1024*1024); + if (!lpbfifo.bcom_rx_task) + goto err_bcom_rx; + + rc = request_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task), + mpc52xx_lpbfifo_bcom_irq, 0, + "mpc52xx-lpbfifo-rx", &lpbfifo); + if (rc) + goto err_bcom_rx_irq; + + /* Request the Bestcomm transmit (memory --> fifo) task and IRQ */ + lpbfifo.bcom_tx_task = + bcom_gen_bd_tx_init(2, res.start + LPBFIFO_REG_FIFO_DATA, + BCOM_INITIATOR_SCLPC, BCOM_IPR_SCLPC); + if (!lpbfifo.bcom_tx_task) + goto err_bcom_tx; + + lpbfifo.dev = &op->dev; + return 0; + + err_bcom_tx: + free_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task), &lpbfifo); + err_bcom_rx_irq: + bcom_gen_bd_rx_release(lpbfifo.bcom_rx_task); + err_bcom_rx: + err_irq: + iounmap(lpbfifo.regs); + lpbfifo.regs = NULL; + + dev_err(&op->dev, "mpc52xx_lpbfifo_probe() failed\n"); + return -ENODEV; +} + + +static int __devexit mpc52xx_lpbfifo_remove(struct of_device *op) +{ + if (lpbfifo.dev != &op->dev) + return 0; + + /* Put FIFO in reset */ + out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000); + + /* Release the bestcomm transmit task */ + free_irq(bcom_get_task_irq(lpbfifo.bcom_tx_task), &lpbfifo); + bcom_gen_bd_tx_release(lpbfifo.bcom_tx_task); + + /* Release the bestcomm receive task */ + free_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task), &lpbfifo); + bcom_gen_bd_rx_release(lpbfifo.bcom_rx_task); + + free_irq(lpbfifo.irq, &lpbfifo); + iounmap(lpbfifo.regs); + lpbfifo.regs = NULL; + lpbfifo.dev = NULL; + + return 0; +} + +static struct of_device_id mpc52xx_lpbfifo_match[] __devinitconst = { + { .compatible = "fsl,mpc5200-lpbfifo", }, + {}, +}; + +static struct of_platform_driver mpc52xx_lpbfifo_driver = { + .owner = THIS_MODULE, + .name = "mpc52xx-lpbfifo", + .match_table = mpc52xx_lpbfifo_match, + .probe = mpc52xx_lpbfifo_probe, + .remove = __devexit_p(mpc52xx_lpbfifo_remove), +}; + +/*********************************************************************** + * Module init/exit + */ +static int __init mpc52xx_lpbfifo_init(void) +{ + pr_debug("Registering LocalPlus bus FIFO driver\n"); + return of_register_platform_driver(&mpc52xx_lpbfifo_driver); +} +module_init(mpc52xx_lpbfifo_init); + +static void __exit mpc52xx_lpbfifo_exit(void) +{ + pr_debug("Unregistering LocalPlus bus FIFO driver\n"); + of_unregister_platform_driver(&mpc52xx_lpbfifo_driver); +} +module_exit(mpc52xx_lpbfifo_exit); diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c index 480f806fd0a9..a3122d163b6a 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c @@ -220,7 +220,7 @@ static int mpc52xx_extirq_set_type(unsigned int virq, unsigned int flow_type) } static struct irq_chip mpc52xx_extirq_irqchip = { - .typename = "MPC52xx External", + .name = "MPC52xx External", .mask = mpc52xx_extirq_mask, .unmask = mpc52xx_extirq_unmask, .ack = mpc52xx_extirq_ack, @@ -258,7 +258,7 @@ static void mpc52xx_main_unmask(unsigned int virq) } static struct irq_chip mpc52xx_main_irqchip = { - .typename = "MPC52xx Main", + .name = "MPC52xx Main", .mask = mpc52xx_main_mask, .mask_ack = mpc52xx_main_mask, .unmask = mpc52xx_main_unmask, @@ -291,7 +291,7 @@ static void mpc52xx_periph_unmask(unsigned int virq) } static struct irq_chip mpc52xx_periph_irqchip = { - .typename = "MPC52xx Peripherals", + .name = "MPC52xx Peripherals", .mask = mpc52xx_periph_mask, .mask_ack = mpc52xx_periph_mask, .unmask = mpc52xx_periph_unmask, @@ -335,7 +335,7 @@ static void mpc52xx_sdma_ack(unsigned int virq) } static struct irq_chip mpc52xx_sdma_irqchip = { - .typename = "MPC52xx SDMA", + .name = "MPC52xx SDMA", .mask = mpc52xx_sdma_mask, .unmask = mpc52xx_sdma_unmask, .ack = mpc52xx_sdma_ack, diff --git a/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c b/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c index 7ee979f323d1..9d962d7c72c1 100644 --- a/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c +++ b/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c @@ -69,7 +69,6 @@ static void pq2ads_pci_unmask_irq(unsigned int virq) } static struct irq_chip pq2ads_pci_ic = { - .typename = "PQ2 ADS PCI", .name = "PQ2 ADS PCI", .end = pq2ads_pci_unmask_irq, .mask = pq2ads_pci_mask_irq, @@ -107,7 +106,7 @@ static void pq2ads_pci_irq_demux(unsigned int irq, struct irq_desc *desc) static int pci_pic_host_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hw) { - get_irq_desc(virq)->status |= IRQ_LEVEL; + irq_to_desc(virq)->status |= IRQ_LEVEL; set_irq_chip_data(virq, h->host_data); set_irq_chip_and_handler(virq, &pq2ads_pci_ic, handle_level_irq); return 0; diff --git a/arch/powerpc/platforms/83xx/mpc832x_rdb.c b/arch/powerpc/platforms/83xx/mpc832x_rdb.c index 567ded7c3b9b..17f99745f0e4 100644 --- a/arch/powerpc/platforms/83xx/mpc832x_rdb.c +++ b/arch/powerpc/platforms/83xx/mpc832x_rdb.c @@ -74,7 +74,7 @@ static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk, prop = of_get_property(np, "mode", NULL); if (prop && !strcmp(prop, "cpu-qe")) - pdata.qe_mode = 1; + pdata.flags = SPI_QE_CPU_MODE; for (j = 0; j < num_board_infos; j++) { if (board_infos[j].bus_num == pdata.bus_num) diff --git a/arch/powerpc/platforms/83xx/suspend.c b/arch/powerpc/platforms/83xx/suspend.c index 08e65fc8b98c..d306f07b9aa1 100644 --- a/arch/powerpc/platforms/83xx/suspend.c +++ b/arch/powerpc/platforms/83xx/suspend.c @@ -96,6 +96,7 @@ int fsl_deep_sleep(void) { return deep_sleeping; } +EXPORT_SYMBOL(fsl_deep_sleep); static int mpc83xx_change_state(void) { diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index d3a975e8fd3e..d95121894eb7 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -1,6 +1,7 @@ -menuconfig MPC85xx - bool "Machine Type" - depends on PPC_85xx +menuconfig FSL_SOC_BOOKE + bool "Freescale Book-E Machine Type" + depends on PPC_85xx || PPC_BOOK3E + select FSL_SOC select PPC_UDBG_16550 select MPIC select PPC_PCI_CHOICE @@ -8,7 +9,7 @@ menuconfig MPC85xx select SERIAL_8250_SHARE_IRQ if SERIAL_8250 default y -if MPC85xx +if FSL_SOC_BOOKE config MPC8540_ADS bool "Freescale MPC8540 ADS" @@ -144,7 +145,19 @@ config SBC8560 help This option enables support for the Wind River SBC8560 board -endif # MPC85xx +config P4080_DS + bool "Freescale P4080 DS" + select DEFAULT_UIMAGE + select PPC_FSL_BOOK3E + select PPC_E500MC + select PHYS_64BIT + select SWIOTLB + select MPC8xxx_GPIO + select HAS_RAPIDIO + help + This option enables support for the P4080 DS board + +endif # FSL_SOC_BOOKE config TQM85xx bool diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile index 9098aea0cf32..387c128f2c8c 100644 --- a/arch/powerpc/platforms/85xx/Makefile +++ b/arch/powerpc/platforms/85xx/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_MPC8536_DS) += mpc8536_ds.o obj-$(CONFIG_MPC85xx_DS) += mpc85xx_ds.o obj-$(CONFIG_MPC85xx_MDS) += mpc85xx_mds.o obj-$(CONFIG_MPC85xx_RDB) += mpc85xx_rdb.o +obj-$(CONFIG_P4080_DS) += p4080_ds.o corenet_ds.o obj-$(CONFIG_STX_GP3) += stx_gp3.o obj-$(CONFIG_TQM85xx) += tqm85xx.o obj-$(CONFIG_SBC8560) += sbc8560.o diff --git a/arch/powerpc/platforms/85xx/corenet_ds.c b/arch/powerpc/platforms/85xx/corenet_ds.c new file mode 100644 index 000000000000..534c2ecc89d9 --- /dev/null +++ b/arch/powerpc/platforms/85xx/corenet_ds.c @@ -0,0 +1,125 @@ +/* + * Corenet based SoC DS Setup + * + * Maintained by Kumar Gala (see MAINTAINERS for contact information) + * + * Copyright 2009 Freescale Semiconductor Inc. + * + * 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/kernel.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/lmb.h> + +#include <asm/system.h> +#include <asm/time.h> +#include <asm/machdep.h> +#include <asm/pci-bridge.h> +#include <mm/mmu_decl.h> +#include <asm/prom.h> +#include <asm/udbg.h> +#include <asm/mpic.h> + +#include <linux/of_platform.h> +#include <sysdev/fsl_soc.h> +#include <sysdev/fsl_pci.h> + +void __init corenet_ds_pic_init(void) +{ + struct mpic *mpic; + struct resource r; + struct device_node *np = NULL; + unsigned int flags = MPIC_PRIMARY | MPIC_BIG_ENDIAN | + MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU; + + np = of_find_node_by_type(np, "open-pic"); + + if (np == NULL) { + printk(KERN_ERR "Could not find open-pic node\n"); + return; + } + + if (of_address_to_resource(np, 0, &r)) { + printk(KERN_ERR "Failed to map mpic register space\n"); + of_node_put(np); + return; + } + + if (ppc_md.get_irq == mpic_get_coreint_irq) + flags |= MPIC_ENABLE_COREINT; + + mpic = mpic_alloc(np, r.start, flags, 0, 256, " OpenPIC "); + BUG_ON(mpic == NULL); + + mpic_init(mpic); +} + +#ifdef CONFIG_PCI +static int primary_phb_addr; +#endif + +/* + * Setup the architecture + */ +#ifdef CONFIG_SMP +void __init mpc85xx_smp_init(void); +#endif + +void __init corenet_ds_setup_arch(void) +{ +#ifdef CONFIG_PCI + struct device_node *np; + struct pci_controller *hose; +#endif + dma_addr_t max = 0xffffffff; + +#ifdef CONFIG_SMP + mpc85xx_smp_init(); +#endif + +#ifdef CONFIG_PCI + for_each_compatible_node(np, "pci", "fsl,p4080-pcie") { + struct resource rsrc; + of_address_to_resource(np, 0, &rsrc); + if ((rsrc.start & 0xfffff) == primary_phb_addr) + fsl_add_bridge(np, 1); + else + fsl_add_bridge(np, 0); + + hose = pci_find_hose_for_OF_device(np); + max = min(max, hose->dma_window_base_cur + + hose->dma_window_size); + } +#endif + +#ifdef CONFIG_SWIOTLB + if (lmb_end_of_DRAM() > max) { + ppc_swiotlb_enable = 1; + set_pci_dma_ops(&swiotlb_dma_ops); + ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; + } +#endif + pr_info("%s board from Freescale Semiconductor\n", ppc_md.name); +} + +static const struct of_device_id of_device_ids[] __devinitconst = { + { + .compatible = "simple-bus" + }, + { + .compatible = "fsl,rapidio-delta", + }, + {} +}; + +int __init corenet_ds_publish_devices(void) +{ + return of_platform_bus_probe(NULL, of_device_ids, NULL); +} diff --git a/arch/powerpc/platforms/85xx/corenet_ds.h b/arch/powerpc/platforms/85xx/corenet_ds.h new file mode 100644 index 000000000000..ddd700b23031 --- /dev/null +++ b/arch/powerpc/platforms/85xx/corenet_ds.h @@ -0,0 +1,19 @@ +/* + * Corenet based SoC DS Setup + * + * Copyright 2009 Freescale Semiconductor Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef CORENET_DS_H +#define CORENET_DS_H + +extern void __init corenet_ds_pic_init(void); +extern void __init corenet_ds_setup_arch(void); +extern int __init corenet_ds_publish_devices(void); + +#endif diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index 3909d57b86e3..c5028a2e5a58 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -301,6 +301,7 @@ static struct of_device_id mpc85xx_ids[] = { { .compatible = "fsl,qe", }, { .compatible = "gianfar", }, { .compatible = "fsl,rapidio-delta", }, + { .compatible = "fsl,mpc8548-guts", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c index c8468de4acf6..088f30b0c088 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c @@ -44,6 +44,7 @@ void __init mpc85xx_rdb_pic_init(void) struct mpic *mpic; struct resource r; struct device_node *np; + unsigned long root = of_get_flat_dt_root(); np = of_find_node_by_type(NULL, "open-pic"); if (np == NULL) { @@ -57,11 +58,18 @@ void __init mpc85xx_rdb_pic_init(void) return; } - mpic = mpic_alloc(np, r.start, + if (of_flat_dt_is_compatible(root, "fsl,85XXRDB-CAMP")) { + mpic = mpic_alloc(np, r.start, + MPIC_PRIMARY | + MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, + 0, 256, " OpenPIC "); + } else { + mpic = mpic_alloc(np, r.start, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC "); + } BUG_ON(mpic == NULL); of_node_put(np); @@ -113,6 +121,7 @@ static int __init mpc85xxrdb_publish_devices(void) return of_platform_bus_probe(NULL, mpc85xxrdb_ids, NULL); } machine_device_initcall(p2020_rdb, mpc85xxrdb_publish_devices); +machine_device_initcall(p1020_rdb, mpc85xxrdb_publish_devices); /* * Called very early, device-tree isn't unflattened @@ -126,6 +135,15 @@ static int __init p2020_rdb_probe(void) return 0; } +static int __init p1020_rdb_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + if (of_flat_dt_is_compatible(root, "fsl,P1020RDB")) + return 1; + return 0; +} + define_machine(p2020_rdb) { .name = "P2020 RDB", .probe = p2020_rdb_probe, @@ -139,3 +157,17 @@ define_machine(p2020_rdb) { .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, }; + +define_machine(p1020_rdb) { + .name = "P1020 RDB", + .probe = p1020_rdb_probe, + .setup_arch = mpc85xx_rdb_setup_arch, + .init_IRQ = mpc85xx_rdb_pic_init, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, +#endif + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; diff --git a/arch/powerpc/platforms/85xx/p4080_ds.c b/arch/powerpc/platforms/85xx/p4080_ds.c new file mode 100644 index 000000000000..84170460497b --- /dev/null +++ b/arch/powerpc/platforms/85xx/p4080_ds.c @@ -0,0 +1,74 @@ +/* + * P4080 DS Setup + * + * Maintained by Kumar Gala (see MAINTAINERS for contact information) + * + * Copyright 2009 Freescale Semiconductor Inc. + * + * 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/kernel.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/delay.h> +#include <linux/interrupt.h> + +#include <asm/system.h> +#include <asm/time.h> +#include <asm/machdep.h> +#include <asm/pci-bridge.h> +#include <mm/mmu_decl.h> +#include <asm/prom.h> +#include <asm/udbg.h> +#include <asm/mpic.h> + +#include <linux/of_platform.h> +#include <sysdev/fsl_soc.h> +#include <sysdev/fsl_pci.h> + +#include "corenet_ds.h" + +#ifdef CONFIG_PCI +static int primary_phb_addr; +#endif + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init p4080_ds_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + if (of_flat_dt_is_compatible(root, "fsl,P4080DS")) { +#ifdef CONFIG_PCI + /* treat PCIe1 as primary, + * shouldn't matter as we have no ISA on the board + */ + primary_phb_addr = 0x0000; +#endif + return 1; + } else { + return 0; + } +} + +define_machine(p4080_ds) { + .name = "P4080 DS", + .probe = p4080_ds_probe, + .setup_arch = corenet_ds_setup_arch, + .init_IRQ = corenet_ds_pic_init, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, +#endif + .get_irq = mpic_get_coreint_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; + +machine_device_initcall(p4080_ds, corenet_ds_publish_devices); +machine_arch_initcall(p4080_ds, swiotlb_setup_bus_notifier); diff --git a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c index 60edf63d0157..37a2e5f60af9 100644 --- a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c +++ b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c @@ -232,7 +232,7 @@ static int socrates_fpga_pic_set_type(unsigned int virq, } static struct irq_chip socrates_fpga_pic_chip = { - .typename = " FPGA-PIC ", + .name = " FPGA-PIC ", .ack = socrates_fpga_pic_ack, .mask = socrates_fpga_pic_mask, .mask_ack = socrates_fpga_pic_mask_ack, @@ -245,7 +245,7 @@ static int socrates_fpga_pic_host_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hwirq) { /* All interrupts are LEVEL sensitive */ - get_irq_desc(virq)->status |= IRQ_LEVEL; + irq_to_desc(virq)->status |= IRQ_LEVEL; set_irq_chip_and_handler(virq, &socrates_fpga_pic_chip, handle_fasteoi_irq); diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig index 9c7b64a3402b..2bbfd530d6d8 100644 --- a/arch/powerpc/platforms/86xx/Kconfig +++ b/arch/powerpc/platforms/86xx/Kconfig @@ -35,6 +35,7 @@ config MPC8610_HPCD config GEF_PPC9A bool "GE Fanuc PPC9A" select DEFAULT_UIMAGE + select MMIO_NVRAM select GENERIC_GPIO select ARCH_REQUIRE_GPIOLIB help @@ -43,6 +44,7 @@ config GEF_PPC9A config GEF_SBC310 bool "GE Fanuc SBC310" select DEFAULT_UIMAGE + select MMIO_NVRAM select GENERIC_GPIO select ARCH_REQUIRE_GPIOLIB help @@ -51,6 +53,7 @@ config GEF_SBC310 config GEF_SBC610 bool "GE Fanuc SBC610" select DEFAULT_UIMAGE + select MMIO_NVRAM select GENERIC_GPIO select ARCH_REQUIRE_GPIOLIB select HAS_RAPIDIO diff --git a/arch/powerpc/platforms/86xx/gef_pic.c b/arch/powerpc/platforms/86xx/gef_pic.c index 50d0a2b63809..e1d5d36995df 100644 --- a/arch/powerpc/platforms/86xx/gef_pic.c +++ b/arch/powerpc/platforms/86xx/gef_pic.c @@ -149,7 +149,7 @@ static void gef_pic_unmask(unsigned int virq) } static struct irq_chip gef_pic_chip = { - .typename = "gefp", + .name = "gefp", .mask = gef_pic_mask, .mask_ack = gef_pic_mask_ack, .unmask = gef_pic_unmask, @@ -163,7 +163,7 @@ static int gef_pic_host_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hwirq) { /* All interrupts are LEVEL sensitive */ - get_irq_desc(virq)->status |= IRQ_LEVEL; + irq_to_desc(virq)->status |= IRQ_LEVEL; set_irq_chip_and_handler(virq, &gef_pic_chip, handle_level_irq); return 0; diff --git a/arch/powerpc/platforms/86xx/gef_ppc9a.c b/arch/powerpc/platforms/86xx/gef_ppc9a.c index 287f7bd17dd9..a792e5d85813 100644 --- a/arch/powerpc/platforms/86xx/gef_ppc9a.c +++ b/arch/powerpc/platforms/86xx/gef_ppc9a.c @@ -33,6 +33,7 @@ #include <asm/udbg.h> #include <asm/mpic.h> +#include <asm/nvram.h> #include <sysdev/fsl_pci.h> #include <sysdev/fsl_soc.h> @@ -95,6 +96,10 @@ static void __init gef_ppc9a_setup_arch(void) printk(KERN_WARNING "Unable to map board registers\n"); of_node_put(regs); } + +#if defined(CONFIG_MMIO_NVRAM) + mmio_nvram_init(); +#endif } /* Return the PCB revision */ diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c b/arch/powerpc/platforms/86xx/gef_sbc310.c index 90754e752bd8..6a1a613836c2 100644 --- a/arch/powerpc/platforms/86xx/gef_sbc310.c +++ b/arch/powerpc/platforms/86xx/gef_sbc310.c @@ -33,6 +33,7 @@ #include <asm/udbg.h> #include <asm/mpic.h> +#include <asm/nvram.h> #include <sysdev/fsl_pci.h> #include <sysdev/fsl_soc.h> @@ -95,6 +96,10 @@ static void __init gef_sbc310_setup_arch(void) printk(KERN_WARNING "Unable to map board registers\n"); of_node_put(regs); } + +#if defined(CONFIG_MMIO_NVRAM) + mmio_nvram_init(); +#endif } /* Return the PCB revision */ diff --git a/arch/powerpc/platforms/86xx/gef_sbc610.c b/arch/powerpc/platforms/86xx/gef_sbc610.c index 72b31a6010a0..e10688a0fc4e 100644 --- a/arch/powerpc/platforms/86xx/gef_sbc610.c +++ b/arch/powerpc/platforms/86xx/gef_sbc610.c @@ -33,6 +33,7 @@ #include <asm/udbg.h> #include <asm/mpic.h> +#include <asm/nvram.h> #include <sysdev/fsl_pci.h> #include <sysdev/fsl_soc.h> @@ -95,6 +96,10 @@ static void __init gef_sbc610_setup_arch(void) printk(KERN_WARNING "Unable to map board registers\n"); of_node_put(regs); } + +#if defined(CONFIG_MMIO_NVRAM) + mmio_nvram_init(); +#endif } /* Return the PCB revision */ diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c index 627908a4cd77..5abe137f6309 100644 --- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c +++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c @@ -19,6 +19,7 @@ #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/pci.h> +#include <linux/interrupt.h> #include <linux/kdev_t.h> #include <linux/delay.h> #include <linux/seq_file.h> @@ -41,10 +42,46 @@ #include "mpc86xx.h" +static struct device_node *pixis_node; static unsigned char *pixis_bdcfg0, *pixis_arch; +#ifdef CONFIG_SUSPEND +static irqreturn_t mpc8610_sw9_irq(int irq, void *data) +{ + pr_debug("%s: PIXIS' event (sw9/wakeup) IRQ handled\n", __func__); + return IRQ_HANDLED; +} + +static void __init mpc8610_suspend_init(void) +{ + int irq; + int ret; + + if (!pixis_node) + return; + + irq = irq_of_parse_and_map(pixis_node, 0); + if (!irq) { + pr_err("%s: can't map pixis event IRQ.\n", __func__); + return; + } + + ret = request_irq(irq, mpc8610_sw9_irq, 0, "sw9/wakeup", NULL); + if (ret) { + pr_err("%s: can't request pixis event IRQ: %d\n", + __func__, ret); + irq_dispose_mapping(irq); + } + + enable_irq_wake(irq); +} +#else +static inline void mpc8610_suspend_init(void) { } +#endif /* CONFIG_SUSPEND */ + static struct of_device_id __initdata mpc8610_ids[] = { { .compatible = "fsl,mpc8610-immr", }, + { .compatible = "fsl,mpc8610-guts", }, { .compatible = "simple-bus", }, { .compatible = "gianfar", }, {} @@ -55,6 +92,9 @@ static int __init mpc8610_declare_of_platform_devices(void) /* Firstly, register PIXIS GPIOs. */ simple_gpiochip_init("fsl,fpga-pixis-gpio-bank"); + /* Enable wakeup on PIXIS' event IRQ. */ + mpc8610_suspend_init(); + /* Without this call, the SSI device driver won't get probed. */ of_platform_bus_probe(NULL, mpc8610_ids, NULL); @@ -250,10 +290,10 @@ static void __init mpc86xx_hpcd_setup_arch(void) diu_ops.set_sysfs_monitor_port = mpc8610hpcd_set_sysfs_monitor_port; #endif - np = of_find_compatible_node(NULL, NULL, "fsl,fpga-pixis"); - if (np) { - of_address_to_resource(np, 0, &r); - of_node_put(np); + pixis_node = of_find_compatible_node(NULL, NULL, "fsl,fpga-pixis"); + if (pixis_node) { + of_address_to_resource(pixis_node, 0, &r); + of_node_put(pixis_node); pixis = ioremap(r.start, 32); if (!pixis) { printk(KERN_ERR "Err: can't map FPGA cfg register!\n"); diff --git a/arch/powerpc/platforms/8xx/m8xx_setup.c b/arch/powerpc/platforms/8xx/m8xx_setup.c index 385acfc48397..242954c4293f 100644 --- a/arch/powerpc/platforms/8xx/m8xx_setup.c +++ b/arch/powerpc/platforms/8xx/m8xx_setup.c @@ -222,7 +222,7 @@ static void cpm_cascade(unsigned int irq, struct irq_desc *desc) int cascade_irq; if ((cascade_irq = cpm_get_irq()) >= 0) { - struct irq_desc *cdesc = irq_desc + cascade_irq; + struct irq_desc *cdesc = irq_to_desc(cascade_irq); generic_handle_irq(cascade_irq); cdesc->chip->eoi(cascade_irq); diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index 04a8061045c4..d1663db7810f 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -86,6 +86,11 @@ config RTAS_ERROR_LOGGING depends on PPC_RTAS default n +config PPC_RTAS_DAEMON + bool + depends on PPC_RTAS + default n + config RTAS_PROC bool "Proc interface to RTAS" depends on PPC_RTAS @@ -255,7 +260,7 @@ config QE_GPIO config CPM2 bool "Enable support for the CPM2 (Communications Processor Module)" - depends on MPC85xx || 8260 + depends on (FSL_SOC_BOOKE && PPC32) || 8260 select CPM select PPC_LIB_RHEAP select PPC_PCI_CHOICE @@ -300,7 +305,7 @@ source "arch/powerpc/sysdev/bestcomm/Kconfig" config MPC8xxx_GPIO bool "MPC8xxx GPIO support" - depends on PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || PPC_85xx || PPC_86xx + depends on PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || FSL_SOC_BOOKE || PPC_86xx select GENERIC_GPIO select ARCH_REQUIRE_GPIOLIB help diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index e382cae678b8..2eab27a94cc9 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -28,8 +28,6 @@ config PPC_BOOK3S_32 config PPC_85xx bool "Freescale 85xx" select E500 - select FSL_SOC - select MPC85xx config PPC_8xx bool "Freescale 8xx" @@ -138,6 +136,14 @@ config PPC_FPU bool default y if PPC64 +config FSL_EMB_PERFMON + bool "Freescale Embedded Perfmon" + depends on E500 || PPC_83xx + help + This is the Performance Monitor support found on the e500 core + and some e300 cores (c3 and c4). Select this only if your + core supports the Embedded Performance Monitor APU + config 4xx bool depends on 40x || 44x @@ -153,13 +159,6 @@ config FSL_BOOKE depends on E200 || E500 default y -config FSL_EMB_PERFMON - bool "Freescale Embedded Perfmon" - depends on E500 || PPC_83xx - help - This is the Performance Monitor support found on the e500 core - and some e300 cores (c3 and c4). Select this only if your - core supports the Embedded Performance Monitor APU config PTE_64BIT bool diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile index a6812ee00100..fdb9f0b0d7a8 100644 --- a/arch/powerpc/platforms/Makefile +++ b/arch/powerpc/platforms/Makefile @@ -12,7 +12,7 @@ obj-$(CONFIG_PPC_MPC52xx) += 52xx/ obj-$(CONFIG_PPC_8xx) += 8xx/ obj-$(CONFIG_PPC_82xx) += 82xx/ obj-$(CONFIG_PPC_83xx) += 83xx/ -obj-$(CONFIG_PPC_85xx) += 85xx/ +obj-$(CONFIG_FSL_SOC_BOOKE) += 85xx/ obj-$(CONFIG_PPC_86xx) += 86xx/ obj-$(CONFIG_PPC_PSERIES) += pseries/ obj-$(CONFIG_PPC_ISERIES) += iseries/ diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c index a86c34b3bb84..96fe896f6df3 100644 --- a/arch/powerpc/platforms/cell/axon_msi.c +++ b/arch/powerpc/platforms/cell/axon_msi.c @@ -312,7 +312,7 @@ static struct irq_chip msic_irq_chip = { .mask = mask_msi_irq, .unmask = unmask_msi_irq, .shutdown = unmask_msi_irq, - .typename = "AXON-MSI", + .name = "AXON-MSI", }; static int msic_host_map(struct irq_host *h, unsigned int virq, diff --git a/arch/powerpc/platforms/cell/beat_interrupt.c b/arch/powerpc/platforms/cell/beat_interrupt.c index 72254848a228..c3479a47d45a 100644 --- a/arch/powerpc/platforms/cell/beat_interrupt.c +++ b/arch/powerpc/platforms/cell/beat_interrupt.c @@ -110,7 +110,7 @@ static void beatic_end_irq(unsigned int irq_plug) } static struct irq_chip beatic_pic = { - .typename = " CELL-BEAT ", + .name = " CELL-BEAT ", .unmask = beatic_unmask_irq, .mask = beatic_mask_irq, .eoi = beatic_end_irq, @@ -136,7 +136,7 @@ static void beatic_pic_host_unmap(struct irq_host *h, unsigned int virq) static int beatic_pic_host_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hw) { - struct irq_desc *desc = get_irq_desc(virq); + struct irq_desc *desc = irq_to_desc(virq); int64_t err; err = beat_construct_and_connect_irq_plug(virq, hw); diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c index 882e47080e74..3b67afba3f9b 100644 --- a/arch/powerpc/platforms/cell/interrupt.c +++ b/arch/powerpc/platforms/cell/interrupt.c @@ -88,7 +88,7 @@ static void iic_eoi(unsigned int irq) } static struct irq_chip iic_chip = { - .typename = " CELL-IIC ", + .name = " CELL-IIC ", .mask = iic_mask, .unmask = iic_unmask, .eoi = iic_eoi, @@ -133,7 +133,7 @@ static void iic_ioexc_cascade(unsigned int irq, struct irq_desc *desc) static struct irq_chip iic_ioexc_chip = { - .typename = " CELL-IOEX", + .name = " CELL-IOEX", .mask = iic_mask, .unmask = iic_unmask, .eoi = iic_ioexc_eoi, diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c index 4e5655624ae8..167dedaada76 100644 --- a/arch/powerpc/platforms/cell/spider-pic.c +++ b/arch/powerpc/platforms/cell/spider-pic.c @@ -102,7 +102,7 @@ static void spider_ack_irq(unsigned int virq) /* Reset edge detection logic if necessary */ - if (get_irq_desc(virq)->status & IRQ_LEVEL) + if (irq_to_desc(virq)->status & IRQ_LEVEL) return; /* Only interrupts 47 to 50 can be set to edge */ @@ -119,7 +119,7 @@ static int spider_set_irq_type(unsigned int virq, unsigned int type) struct spider_pic *pic = spider_virq_to_pic(virq); unsigned int hw = irq_map[virq].hwirq; void __iomem *cfg = spider_get_irq_config(pic, hw); - struct irq_desc *desc = get_irq_desc(virq); + struct irq_desc *desc = irq_to_desc(virq); u32 old_mask; u32 ic; @@ -168,7 +168,7 @@ static int spider_set_irq_type(unsigned int virq, unsigned int type) } static struct irq_chip spider_pic = { - .typename = " SPIDER ", + .name = " SPIDER ", .unmask = spider_unmask_irq, .mask = spider_mask_irq, .ack = spider_ack_irq, diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c index 884e8bcec499..64a4c2d85f7c 100644 --- a/arch/powerpc/platforms/cell/spufs/file.c +++ b/arch/powerpc/platforms/cell/spufs/file.c @@ -2494,7 +2494,7 @@ static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, struct spu_context *ctx = SPUFS_I(inode)->i_ctx; int error = 0, cnt = 0; - if (!buf || len < 0) + if (!buf) return -EINVAL; error = spu_acquire(ctx); diff --git a/arch/powerpc/platforms/chrp/Kconfig b/arch/powerpc/platforms/chrp/Kconfig index 37d438bd5b7a..bc0b0efdc5fe 100644 --- a/arch/powerpc/platforms/chrp/Kconfig +++ b/arch/powerpc/platforms/chrp/Kconfig @@ -5,6 +5,8 @@ config PPC_CHRP select PPC_I8259 select PPC_INDIRECT_PCI select PPC_RTAS + select PPC_RTAS_DAEMON + select RTAS_ERROR_LOGGING select PPC_MPC106 select PPC_UDBG_16550 select PPC_NATIVE diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c index cd4ad9aea760..52f3df3b4ca0 100644 --- a/arch/powerpc/platforms/chrp/setup.c +++ b/arch/powerpc/platforms/chrp/setup.c @@ -364,19 +364,6 @@ void __init chrp_setup_arch(void) if (ppc_md.progress) ppc_md.progress("Linux/PPC "UTS_RELEASE"\n", 0x0); } -void -chrp_event_scan(unsigned long unused) -{ - unsigned char log[1024]; - int ret = 0; - - /* XXX: we should loop until the hardware says no more error logs -- Cort */ - rtas_call(rtas_token("event-scan"), 4, 1, &ret, 0xffffffff, 0, - __pa(log), 1024); - mod_timer(&__get_cpu_var(heartbeat_timer), - jiffies + event_scan_interval); -} - static void chrp_8259_cascade(unsigned int irq, struct irq_desc *desc) { unsigned int cascade_irq = i8259_irq(); @@ -568,9 +555,6 @@ void __init chrp_init_IRQ(void) void __init chrp_init2(void) { - struct device_node *device; - const unsigned int *p = NULL; - #ifdef CONFIG_NVRAM chrp_nvram_init(); #endif @@ -582,40 +566,6 @@ chrp_init2(void) request_region(0x80,0x10,"dma page reg"); request_region(0xc0,0x20,"dma2"); - /* Get the event scan rate for the rtas so we know how - * often it expects a heartbeat. -- Cort - */ - device = of_find_node_by_name(NULL, "rtas"); - if (device) - p = of_get_property(device, "rtas-event-scan-rate", NULL); - if (p && *p) { - /* - * Arrange to call chrp_event_scan at least *p times - * per minute. We use 59 rather than 60 here so that - * the rate will be slightly higher than the minimum. - * This all assumes we don't do hotplug CPU on any - * machine that needs the event scans done. - */ - unsigned long interval, offset; - int cpu, ncpus; - struct timer_list *timer; - - interval = HZ * 59 / *p; - offset = HZ; - ncpus = num_online_cpus(); - event_scan_interval = ncpus * interval; - for (cpu = 0; cpu < ncpus; ++cpu) { - timer = &per_cpu(heartbeat_timer, cpu); - setup_timer(timer, chrp_event_scan, 0); - timer->expires = jiffies + offset; - add_timer_on(timer, cpu); - offset += interval; - } - printk("RTAS Event Scan Rate: %u (%lu jiffies)\n", - *p, interval); - } - of_node_put(device); - if (ppc_md.progress) ppc_md.progress(" Have fun! ", 0x7777); } diff --git a/arch/powerpc/platforms/iseries/htab.c b/arch/powerpc/platforms/iseries/htab.c index f99c6c4b6985..3ae66ab9d5e7 100644 --- a/arch/powerpc/platforms/iseries/htab.c +++ b/arch/powerpc/platforms/iseries/htab.c @@ -19,8 +19,7 @@ #include "call_hpt.h" -static spinlock_t iSeries_hlocks[64] __cacheline_aligned_in_smp = - { [0 ... 63] = SPIN_LOCK_UNLOCKED}; +static spinlock_t iSeries_hlocks[64] __cacheline_aligned_in_smp; /* * Very primitive algorithm for picking up a lock @@ -245,6 +244,11 @@ static void iSeries_hpte_invalidate(unsigned long slot, unsigned long va, void __init hpte_init_iSeries(void) { + int i; + + for (i = 0; i < ARRAY_SIZE(iSeries_hlocks); i++) + spin_lock_init(&iSeries_hlocks[i]); + ppc_md.hpte_invalidate = iSeries_hpte_invalidate; ppc_md.hpte_updatepp = iSeries_hpte_updatepp; ppc_md.hpte_updateboltedpp = iSeries_hpte_updateboltedpp; diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c index 94f444758836..07762259c60a 100644 --- a/arch/powerpc/platforms/iseries/irq.c +++ b/arch/powerpc/platforms/iseries/irq.c @@ -214,7 +214,7 @@ void __init iSeries_activate_IRQs() unsigned long flags; for_each_irq (irq) { - struct irq_desc *desc = get_irq_desc(irq); + struct irq_desc *desc = irq_to_desc(irq); if (desc && desc->chip && desc->chip->startup) { spin_lock_irqsave(&desc->lock, flags); @@ -273,7 +273,7 @@ static void iseries_end_IRQ(unsigned int irq) } static struct irq_chip iseries_pic = { - .typename = "iSeries irq controller", + .name = "iSeries irq controller", .startup = iseries_startup_IRQ, .shutdown = iseries_shutdown_IRQ, .unmask = iseries_enable_IRQ, diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c index d212006a5b3c..99d0b313e9a5 100644 --- a/arch/powerpc/platforms/powermac/pic.c +++ b/arch/powerpc/platforms/powermac/pic.c @@ -152,12 +152,12 @@ static unsigned int pmac_startup_irq(unsigned int virq) unsigned long bit = 1UL << (src & 0x1f); int i = src >> 5; - spin_lock_irqsave(&pmac_pic_lock, flags); - if ((irq_desc[virq].status & IRQ_LEVEL) == 0) + spin_lock_irqsave(&pmac_pic_lock, flags); + if ((irq_to_desc(virq)->status & IRQ_LEVEL) == 0) out_le32(&pmac_irq_hw[i]->ack, bit); __set_bit(src, ppc_cached_irq_mask); __pmac_set_irq_mask(src, 0); - spin_unlock_irqrestore(&pmac_pic_lock, flags); + spin_unlock_irqrestore(&pmac_pic_lock, flags); return 0; } @@ -195,7 +195,7 @@ static int pmac_retrigger(unsigned int virq) } static struct irq_chip pmac_pic = { - .typename = " PMAC-PIC ", + .name = " PMAC-PIC ", .startup = pmac_startup_irq, .mask = pmac_mask_irq, .ack = pmac_ack_irq, @@ -285,7 +285,7 @@ static int pmac_pic_host_match(struct irq_host *h, struct device_node *node) static int pmac_pic_host_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hw) { - struct irq_desc *desc = get_irq_desc(virq); + struct irq_desc *desc = irq_to_desc(virq); int level; if (hw >= max_irqs) diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c index 8ec5ccf76b19..59d9712d7364 100644 --- a/arch/powerpc/platforms/ps3/interrupt.c +++ b/arch/powerpc/platforms/ps3/interrupt.c @@ -152,7 +152,7 @@ static void ps3_chip_eoi(unsigned int virq) */ static struct irq_chip ps3_irq_chip = { - .typename = "ps3", + .name = "ps3", .mask = ps3_chip_mask, .unmask = ps3_chip_unmask, .eoi = ps3_chip_eoi, diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c index 189a25b80735..e81b028a2a48 100644 --- a/arch/powerpc/platforms/ps3/mm.c +++ b/arch/powerpc/platforms/ps3/mm.c @@ -34,7 +34,7 @@ #if defined(DEBUG) #define DBG udbg_printf #else -#define DBG pr_debug +#define DBG pr_devel #endif enum { diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index f0e6f28427bd..27554c807fd5 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -4,6 +4,7 @@ config PPC_PSERIES select MPIC select PPC_I8259 select PPC_RTAS + select PPC_RTAS_DAEMON select RTAS_ERROR_LOGGING select PPC_UDBG_16550 select PPC_NATIVE @@ -59,7 +60,7 @@ config PPC_SMLPAR config CMM tristate "Collaborative memory management" - depends on PPC_SMLPAR && !CRASH_DUMP + depends on PPC_SMLPAR default y help Select this option, if you want to enable the kernel interface diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile index 790c0b872d4f..4b1c422b8145 100644 --- a/arch/powerpc/platforms/pseries/Makefile +++ b/arch/powerpc/platforms/pseries/Makefile @@ -7,7 +7,7 @@ EXTRA_CFLAGS += -DDEBUG endif obj-y := lpar.o hvCall.o nvram.o reconfig.o \ - setup.o iommu.o ras.o rtasd.o \ + setup.o iommu.o ras.o \ firmware.o power.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_XICS) += xics.o diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c index 6567439fe78d..bcdcf0ccc8d7 100644 --- a/arch/powerpc/platforms/pseries/cmm.c +++ b/arch/powerpc/platforms/pseries/cmm.c @@ -229,8 +229,9 @@ static void cmm_get_mpp(void) { int rc; struct hvcall_mpp_data mpp_data; - unsigned long active_pages_target; - signed long page_loan_request; + signed long active_pages_target, page_loan_request, target; + signed long total_pages = totalram_pages + loaned_pages; + signed long min_mem_pages = (min_mem_mb * 1024 * 1024) / PAGE_SIZE; rc = h_get_mpp(&mpp_data); @@ -238,17 +239,25 @@ static void cmm_get_mpp(void) return; page_loan_request = div_s64((s64)mpp_data.loan_request, PAGE_SIZE); - loaned_pages_target = page_loan_request + loaned_pages; - if (loaned_pages_target > oom_freed_pages) - loaned_pages_target -= oom_freed_pages; + target = page_loan_request + (signed long)loaned_pages; + + if (target < 0 || total_pages < min_mem_pages) + target = 0; + + if (target > oom_freed_pages) + target -= oom_freed_pages; else - loaned_pages_target = 0; + target = 0; + + active_pages_target = total_pages - target; + + if (min_mem_pages > active_pages_target) + target = total_pages - min_mem_pages; - active_pages_target = totalram_pages + loaned_pages - loaned_pages_target; + if (target < 0) + target = 0; - if ((min_mem_mb * 1024 * 1024) > (active_pages_target * PAGE_SIZE)) - loaned_pages_target = totalram_pages + loaned_pages - - ((min_mem_mb * 1024 * 1024) / PAGE_SIZE); + loaned_pages_target = target; cmm_dbg("delta = %ld, loaned = %lu, target = %lu, oom = %lu, totalram = %lu\n", page_loan_request, loaned_pages, loaned_pages_target, diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c index 0e8db6771252..ef8e45448480 100644 --- a/arch/powerpc/platforms/pseries/eeh_driver.c +++ b/arch/powerpc/platforms/pseries/eeh_driver.c @@ -63,22 +63,6 @@ static void print_device_node_tree(struct pci_dn *pdn, int dent) } #endif -/** - * irq_in_use - return true if this irq is being used - */ -static int irq_in_use(unsigned int irq) -{ - int rc = 0; - unsigned long flags; - struct irq_desc *desc = irq_desc + irq; - - spin_lock_irqsave(&desc->lock, flags); - if (desc->action) - rc = 1; - spin_unlock_irqrestore(&desc->lock, flags); - return rc; -} - /** * eeh_disable_irq - disable interrupt for the recovering device */ @@ -93,7 +77,7 @@ static void eeh_disable_irq(struct pci_dev *dev) if (dev->msi_enabled || dev->msix_enabled) return; - if (!irq_in_use(dev->irq)) + if (!irq_has_action(dev->irq)) return; PCI_DN(dn)->eeh_mode |= EEH_MODE_IRQ_DISABLED; diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index ebff6d9a4e39..6ea4698d9176 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -30,6 +30,7 @@ #include <asm/pSeries_reconfig.h> #include "xics.h" #include "plpar_wrappers.h" +#include "offline_states.h" /* This version can't take the spinlock, because it never returns */ static struct rtas_args rtas_stop_self_args = { @@ -39,6 +40,55 @@ static struct rtas_args rtas_stop_self_args = { .rets = &rtas_stop_self_args.args[0], }; +static DEFINE_PER_CPU(enum cpu_state_vals, preferred_offline_state) = + CPU_STATE_OFFLINE; +static DEFINE_PER_CPU(enum cpu_state_vals, current_state) = CPU_STATE_OFFLINE; + +static enum cpu_state_vals default_offline_state = CPU_STATE_OFFLINE; + +static int cede_offline_enabled __read_mostly = 1; + +/* + * Enable/disable cede_offline when available. + */ +static int __init setup_cede_offline(char *str) +{ + if (!strcmp(str, "off")) + cede_offline_enabled = 0; + else if (!strcmp(str, "on")) + cede_offline_enabled = 1; + else + return 0; + return 1; +} + +__setup("cede_offline=", setup_cede_offline); + +enum cpu_state_vals get_cpu_current_state(int cpu) +{ + return per_cpu(current_state, cpu); +} + +void set_cpu_current_state(int cpu, enum cpu_state_vals state) +{ + per_cpu(current_state, cpu) = state; +} + +enum cpu_state_vals get_preferred_offline_state(int cpu) +{ + return per_cpu(preferred_offline_state, cpu); +} + +void set_preferred_offline_state(int cpu, enum cpu_state_vals state) +{ + per_cpu(preferred_offline_state, cpu) = state; +} + +void set_default_offline_state(int cpu) +{ + per_cpu(preferred_offline_state, cpu) = default_offline_state; +} + static void rtas_stop_self(void) { struct rtas_args *args = &rtas_stop_self_args; @@ -56,11 +106,61 @@ static void rtas_stop_self(void) static void pseries_mach_cpu_die(void) { + unsigned int cpu = smp_processor_id(); + unsigned int hwcpu = hard_smp_processor_id(); + u8 cede_latency_hint = 0; + local_irq_disable(); idle_task_exit(); xics_teardown_cpu(); - unregister_slb_shadow(hard_smp_processor_id(), __pa(get_slb_shadow())); - rtas_stop_self(); + + if (get_preferred_offline_state(cpu) == CPU_STATE_INACTIVE) { + set_cpu_current_state(cpu, CPU_STATE_INACTIVE); + cede_latency_hint = 2; + + get_lppaca()->idle = 1; + if (!get_lppaca()->shared_proc) + get_lppaca()->donate_dedicated_cpu = 1; + + printk(KERN_INFO + "cpu %u (hwid %u) ceding for offline with hint %d\n", + cpu, hwcpu, cede_latency_hint); + while (get_preferred_offline_state(cpu) == CPU_STATE_INACTIVE) { + extended_cede_processor(cede_latency_hint); + printk(KERN_INFO "cpu %u (hwid %u) returned from cede.\n", + cpu, hwcpu); + printk(KERN_INFO + "Decrementer value = %x Timebase value = %llx\n", + get_dec(), get_tb()); + } + + printk(KERN_INFO "cpu %u (hwid %u) got prodded to go online\n", + cpu, hwcpu); + + if (!get_lppaca()->shared_proc) + get_lppaca()->donate_dedicated_cpu = 0; + get_lppaca()->idle = 0; + } + + if (get_preferred_offline_state(cpu) == CPU_STATE_ONLINE) { + unregister_slb_shadow(hwcpu, __pa(get_slb_shadow())); + + /* + * NOTE: Calling start_secondary() here for now to + * start new context. + * However, need to do it cleanly by resetting the + * stack pointer. + */ + start_secondary(); + + } else if (get_preferred_offline_state(cpu) == CPU_STATE_OFFLINE) { + + set_cpu_current_state(cpu, CPU_STATE_OFFLINE); + unregister_slb_shadow(hard_smp_processor_id(), + __pa(get_slb_shadow())); + rtas_stop_self(); + } + /* Should never get here... */ BUG(); for(;;); @@ -106,18 +206,43 @@ static int pseries_cpu_disable(void) return 0; } +/* + * pseries_cpu_die: Wait for the cpu to die. + * @cpu: logical processor id of the CPU whose death we're awaiting. + * + * This function is called from the context of the thread which is performing + * the cpu-offline. Here we wait for long enough to allow the cpu in question + * to self-destroy so that the cpu-offline thread can send the CPU_DEAD + * notifications. + * + * OTOH, pseries_mach_cpu_die() is called by the @cpu when it wants to + * self-destruct. + */ static void pseries_cpu_die(unsigned int cpu) { int tries; - int cpu_status; + int cpu_status = 1; unsigned int pcpu = get_hard_smp_processor_id(cpu); - for (tries = 0; tries < 25; tries++) { - cpu_status = query_cpu_stopped(pcpu); - if (cpu_status == 0 || cpu_status == -1) - break; - cpu_relax(); + if (get_preferred_offline_state(cpu) == CPU_STATE_INACTIVE) { + cpu_status = 1; + for (tries = 0; tries < 1000; tries++) { + if (get_cpu_current_state(cpu) == CPU_STATE_INACTIVE) { + cpu_status = 0; + break; + } + cpu_relax(); + } + } else if (get_preferred_offline_state(cpu) == CPU_STATE_OFFLINE) { + + for (tries = 0; tries < 25; tries++) { + cpu_status = query_cpu_stopped(pcpu); + if (cpu_status == 0 || cpu_status == -1) + break; + cpu_relax(); + } } + if (cpu_status != 0) { printk("Querying DEAD? cpu %i (%i) shows %i\n", cpu, pcpu, cpu_status); @@ -252,10 +377,41 @@ static struct notifier_block pseries_smp_nb = { .notifier_call = pseries_smp_notifier, }; +#define MAX_CEDE_LATENCY_LEVELS 4 +#define CEDE_LATENCY_PARAM_LENGTH 10 +#define CEDE_LATENCY_PARAM_MAX_LENGTH \ + (MAX_CEDE_LATENCY_LEVELS * CEDE_LATENCY_PARAM_LENGTH * sizeof(char)) +#define CEDE_LATENCY_TOKEN 45 + +static char cede_parameters[CEDE_LATENCY_PARAM_MAX_LENGTH]; + +static int parse_cede_parameters(void) +{ + int call_status; + + memset(cede_parameters, 0, CEDE_LATENCY_PARAM_MAX_LENGTH); + call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, + NULL, + CEDE_LATENCY_TOKEN, + __pa(cede_parameters), + CEDE_LATENCY_PARAM_MAX_LENGTH); + + if (call_status != 0) + printk(KERN_INFO "CEDE_LATENCY: \ + %s %s Error calling get-system-parameter(0x%x)\n", + __FILE__, __func__, call_status); + else + printk(KERN_INFO "CEDE_LATENCY: \ + get-system-parameter successful.\n"); + + return call_status; +} + static int __init pseries_cpu_hotplug_init(void) { struct device_node *np; const char *typep; + int cpu; for_each_node_by_name(np, "interrupt-controller") { typep = of_get_property(np, "compatible", NULL); @@ -283,8 +439,16 @@ static int __init pseries_cpu_hotplug_init(void) smp_ops->cpu_die = pseries_cpu_die; /* Processors can be added/removed only on LPAR */ - if (firmware_has_feature(FW_FEATURE_LPAR)) + if (firmware_has_feature(FW_FEATURE_LPAR)) { pSeries_reconfig_notifier_register(&pseries_smp_nb); + cpu_maps_update_begin(); + if (cede_offline_enabled && parse_cede_parameters() == 0) { + default_offline_state = CPU_STATE_INACTIVE; + for_each_online_cpu(cpu) + set_default_offline_state(cpu); + } + cpu_maps_update_done(); + } return 0; } diff --git a/arch/powerpc/platforms/pseries/offline_states.h b/arch/powerpc/platforms/pseries/offline_states.h new file mode 100644 index 000000000000..22574e0d9d91 --- /dev/null +++ b/arch/powerpc/platforms/pseries/offline_states.h @@ -0,0 +1,18 @@ +#ifndef _OFFLINE_STATES_H_ +#define _OFFLINE_STATES_H_ + +/* Cpu offline states go here */ +enum cpu_state_vals { + CPU_STATE_OFFLINE, + CPU_STATE_INACTIVE, + CPU_STATE_ONLINE, + CPU_MAX_OFFLINE_STATES +}; + +extern enum cpu_state_vals get_cpu_current_state(int cpu); +extern void set_cpu_current_state(int cpu, enum cpu_state_vals state); +extern enum cpu_state_vals get_preferred_offline_state(int cpu); +extern void set_preferred_offline_state(int cpu, enum cpu_state_vals state); +extern void set_default_offline_state(int cpu); +extern int start_secondary(void); +#endif diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h index a24a6b2333b2..0603c91538ae 100644 --- a/arch/powerpc/platforms/pseries/plpar_wrappers.h +++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h @@ -9,11 +9,33 @@ static inline long poll_pending(void) return plpar_hcall_norets(H_POLL_PENDING); } +static inline u8 get_cede_latency_hint(void) +{ + return get_lppaca()->gpr5_dword.fields.cede_latency_hint; +} + +static inline void set_cede_latency_hint(u8 latency_hint) +{ + get_lppaca()->gpr5_dword.fields.cede_latency_hint = latency_hint; +} + static inline long cede_processor(void) { return plpar_hcall_norets(H_CEDE); } +static inline long extended_cede_processor(unsigned long latency_hint) +{ + long rc; + u8 old_latency_hint = get_cede_latency_hint(); + + set_cede_latency_hint(latency_hint); + rc = cede_processor(); + set_cede_latency_hint(old_latency_hint); + + return rc; +} + static inline long vpa_call(unsigned long flags, unsigned long cpu, unsigned long vpa) { diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c index 2e2bbe120b90..5182d2b992c6 100644 --- a/arch/powerpc/platforms/pseries/reconfig.c +++ b/arch/powerpc/platforms/pseries/reconfig.c @@ -184,7 +184,7 @@ static int pSeries_reconfig_remove_node(struct device_node *np) } /* - * /proc/ppc64/ofdt - yucky binary interface for adding and removing + * /proc/powerpc/ofdt - yucky binary interface for adding and removing * OF device nodes. Should be deprecated as soon as we get an * in-kernel wrapper for the RTAS ibm,configure-connector call. */ @@ -543,7 +543,7 @@ static const struct file_operations ofdt_fops = { .write = ofdt_write }; -/* create /proc/ppc64/ofdt write-only by root */ +/* create /proc/powerpc/ofdt write-only by root */ static int proc_ppc64_create_ofdt(void) { struct proc_dir_entry *ent; @@ -551,7 +551,7 @@ static int proc_ppc64_create_ofdt(void) if (!machine_is(pseries)) return 0; - ent = proc_create("ppc64/ofdt", S_IWUSR, NULL, &ofdt_fops); + ent = proc_create("powerpc/ofdt", S_IWUSR, NULL, &ofdt_fops); if (ent) ent->size = 0; diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c deleted file mode 100644 index b3cbac855924..000000000000 --- a/arch/powerpc/platforms/pseries/rtasd.c +++ /dev/null @@ -1,519 +0,0 @@ -/* - * Copyright (C) 2001 Anton Blanchard <anton@au.ibm.com>, IBM - * - * 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. - * - * Communication to userspace based on kernel/printk.c - */ - -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/poll.h> -#include <linux/proc_fs.h> -#include <linux/init.h> -#include <linux/vmalloc.h> -#include <linux/spinlock.h> -#include <linux/cpu.h> -#include <linux/workqueue.h> - -#include <asm/uaccess.h> -#include <asm/io.h> -#include <asm/rtas.h> -#include <asm/prom.h> -#include <asm/nvram.h> -#include <asm/atomic.h> -#include <asm/machdep.h> - - -static DEFINE_SPINLOCK(rtasd_log_lock); - -static DECLARE_WAIT_QUEUE_HEAD(rtas_log_wait); - -static char *rtas_log_buf; -static unsigned long rtas_log_start; -static unsigned long rtas_log_size; - -static int surveillance_timeout = -1; -static unsigned int rtas_error_log_max; -static unsigned int rtas_error_log_buffer_max; - -/* RTAS service tokens */ -static unsigned int event_scan; -static unsigned int rtas_event_scan_rate; - -static int full_rtas_msgs = 0; - -/* Stop logging to nvram after first fatal error */ -static int logging_enabled; /* Until we initialize everything, - * make sure we don't try logging - * anything */ -static int error_log_cnt; - -/* - * Since we use 32 bit RTAS, the physical address of this must be below - * 4G or else bad things happen. Allocate this in the kernel data and - * make it big enough. - */ -static unsigned char logdata[RTAS_ERROR_LOG_MAX]; - -static char *rtas_type[] = { - "Unknown", "Retry", "TCE Error", "Internal Device Failure", - "Timeout", "Data Parity", "Address Parity", "Cache Parity", - "Address Invalid", "ECC Uncorrected", "ECC Corrupted", -}; - -static char *rtas_event_type(int type) -{ - if ((type > 0) && (type < 11)) - return rtas_type[type]; - - switch (type) { - case RTAS_TYPE_EPOW: - return "EPOW"; - case RTAS_TYPE_PLATFORM: - return "Platform Error"; - case RTAS_TYPE_IO: - return "I/O Event"; - case RTAS_TYPE_INFO: - return "Platform Information Event"; - case RTAS_TYPE_DEALLOC: - return "Resource Deallocation Event"; - case RTAS_TYPE_DUMP: - return "Dump Notification Event"; - } - - return rtas_type[0]; -} - -/* To see this info, grep RTAS /var/log/messages and each entry - * will be collected together with obvious begin/end. - * There will be a unique identifier on the begin and end lines. - * This will persist across reboots. - * - * format of error logs returned from RTAS: - * bytes (size) : contents - * -------------------------------------------------------- - * 0-7 (8) : rtas_error_log - * 8-47 (40) : extended info - * 48-51 (4) : vendor id - * 52-1023 (vendor specific) : location code and debug data - */ -static void printk_log_rtas(char *buf, int len) -{ - - int i,j,n = 0; - int perline = 16; - char buffer[64]; - char * str = "RTAS event"; - - if (full_rtas_msgs) { - printk(RTAS_DEBUG "%d -------- %s begin --------\n", - error_log_cnt, str); - - /* - * Print perline bytes on each line, each line will start - * with RTAS and a changing number, so syslogd will - * print lines that are otherwise the same. Separate every - * 4 bytes with a space. - */ - for (i = 0; i < len; i++) { - j = i % perline; - if (j == 0) { - memset(buffer, 0, sizeof(buffer)); - n = sprintf(buffer, "RTAS %d:", i/perline); - } - - if ((i % 4) == 0) - n += sprintf(buffer+n, " "); - - n += sprintf(buffer+n, "%02x", (unsigned char)buf[i]); - - if (j == (perline-1)) - printk(KERN_DEBUG "%s\n", buffer); - } - if ((i % perline) != 0) - printk(KERN_DEBUG "%s\n", buffer); - - printk(RTAS_DEBUG "%d -------- %s end ----------\n", - error_log_cnt, str); - } else { - struct rtas_error_log *errlog = (struct rtas_error_log *)buf; - - printk(RTAS_DEBUG "event: %d, Type: %s, Severity: %d\n", - error_log_cnt, rtas_event_type(errlog->type), - errlog->severity); - } -} - -static int log_rtas_len(char * buf) -{ - int len; - struct rtas_error_log *err; - - /* rtas fixed header */ - len = 8; - err = (struct rtas_error_log *)buf; - if (err->extended_log_length) { - - /* extended header */ - len += err->extended_log_length; - } - - if (rtas_error_log_max == 0) - rtas_error_log_max = rtas_get_error_log_max(); - - if (len > rtas_error_log_max) - len = rtas_error_log_max; - - return len; -} - -/* - * First write to nvram, if fatal error, that is the only - * place we log the info. The error will be picked up - * on the next reboot by rtasd. If not fatal, run the - * method for the type of error. Currently, only RTAS - * errors have methods implemented, but in the future - * there might be a need to store data in nvram before a - * call to panic(). - * - * XXX We write to nvram periodically, to indicate error has - * been written and sync'd, but there is a possibility - * that if we don't shutdown correctly, a duplicate error - * record will be created on next reboot. - */ -void pSeries_log_error(char *buf, unsigned int err_type, int fatal) -{ - unsigned long offset; - unsigned long s; - int len = 0; - - pr_debug("rtasd: logging event\n"); - if (buf == NULL) - return; - - spin_lock_irqsave(&rtasd_log_lock, s); - - /* get length and increase count */ - switch (err_type & ERR_TYPE_MASK) { - case ERR_TYPE_RTAS_LOG: - len = log_rtas_len(buf); - if (!(err_type & ERR_FLAG_BOOT)) - error_log_cnt++; - break; - case ERR_TYPE_KERNEL_PANIC: - default: - WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */ - spin_unlock_irqrestore(&rtasd_log_lock, s); - return; - } - - /* Write error to NVRAM */ - if (logging_enabled && !(err_type & ERR_FLAG_BOOT)) - nvram_write_error_log(buf, len, err_type, error_log_cnt); - - /* - * rtas errors can occur during boot, and we do want to capture - * those somewhere, even if nvram isn't ready (why not?), and even - * if rtasd isn't ready. Put them into the boot log, at least. - */ - if ((err_type & ERR_TYPE_MASK) == ERR_TYPE_RTAS_LOG) - printk_log_rtas(buf, len); - - /* Check to see if we need to or have stopped logging */ - if (fatal || !logging_enabled) { - logging_enabled = 0; - WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */ - spin_unlock_irqrestore(&rtasd_log_lock, s); - return; - } - - /* call type specific method for error */ - switch (err_type & ERR_TYPE_MASK) { - case ERR_TYPE_RTAS_LOG: - offset = rtas_error_log_buffer_max * - ((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK); - - /* First copy over sequence number */ - memcpy(&rtas_log_buf[offset], (void *) &error_log_cnt, sizeof(int)); - - /* Second copy over error log data */ - offset += sizeof(int); - memcpy(&rtas_log_buf[offset], buf, len); - - if (rtas_log_size < LOG_NUMBER) - rtas_log_size += 1; - else - rtas_log_start += 1; - - WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */ - spin_unlock_irqrestore(&rtasd_log_lock, s); - wake_up_interruptible(&rtas_log_wait); - break; - case ERR_TYPE_KERNEL_PANIC: - default: - WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */ - spin_unlock_irqrestore(&rtasd_log_lock, s); - return; - } - -} - - -static int rtas_log_open(struct inode * inode, struct file * file) -{ - return 0; -} - -static int rtas_log_release(struct inode * inode, struct file * file) -{ - return 0; -} - -/* This will check if all events are logged, if they are then, we - * know that we can safely clear the events in NVRAM. - * Next we'll sit and wait for something else to log. - */ -static ssize_t rtas_log_read(struct file * file, char __user * buf, - size_t count, loff_t *ppos) -{ - int error; - char *tmp; - unsigned long s; - unsigned long offset; - - if (!buf || count < rtas_error_log_buffer_max) - return -EINVAL; - - count = rtas_error_log_buffer_max; - - if (!access_ok(VERIFY_WRITE, buf, count)) - return -EFAULT; - - tmp = kmalloc(count, GFP_KERNEL); - if (!tmp) - return -ENOMEM; - - spin_lock_irqsave(&rtasd_log_lock, s); - /* if it's 0, then we know we got the last one (the one in NVRAM) */ - while (rtas_log_size == 0) { - if (file->f_flags & O_NONBLOCK) { - spin_unlock_irqrestore(&rtasd_log_lock, s); - error = -EAGAIN; - goto out; - } - - if (!logging_enabled) { - spin_unlock_irqrestore(&rtasd_log_lock, s); - error = -ENODATA; - goto out; - } - nvram_clear_error_log(); - - spin_unlock_irqrestore(&rtasd_log_lock, s); - error = wait_event_interruptible(rtas_log_wait, rtas_log_size); - if (error) - goto out; - spin_lock_irqsave(&rtasd_log_lock, s); - } - - offset = rtas_error_log_buffer_max * (rtas_log_start & LOG_NUMBER_MASK); - memcpy(tmp, &rtas_log_buf[offset], count); - - rtas_log_start += 1; - rtas_log_size -= 1; - spin_unlock_irqrestore(&rtasd_log_lock, s); - - error = copy_to_user(buf, tmp, count) ? -EFAULT : count; -out: - kfree(tmp); - return error; -} - -static unsigned int rtas_log_poll(struct file *file, poll_table * wait) -{ - poll_wait(file, &rtas_log_wait, wait); - if (rtas_log_size) - return POLLIN | POLLRDNORM; - return 0; -} - -static const struct file_operations proc_rtas_log_operations = { - .read = rtas_log_read, - .poll = rtas_log_poll, - .open = rtas_log_open, - .release = rtas_log_release, -}; - -static int enable_surveillance(int timeout) -{ - int error; - - error = rtas_set_indicator(SURVEILLANCE_TOKEN, 0, timeout); - - if (error == 0) - return 0; - - if (error == -EINVAL) { - printk(KERN_DEBUG "rtasd: surveillance not supported\n"); - return 0; - } - - printk(KERN_ERR "rtasd: could not update surveillance\n"); - return -1; -} - -static void do_event_scan(void) -{ - int error; - do { - memset(logdata, 0, rtas_error_log_max); - error = rtas_call(event_scan, 4, 1, NULL, - RTAS_EVENT_SCAN_ALL_EVENTS, 0, - __pa(logdata), rtas_error_log_max); - if (error == -1) { - printk(KERN_ERR "event-scan failed\n"); - break; - } - - if (error == 0) - pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG, 0); - - } while(error == 0); -} - -static void rtas_event_scan(struct work_struct *w); -DECLARE_DELAYED_WORK(event_scan_work, rtas_event_scan); - -/* - * Delay should be at least one second since some machines have problems if - * we call event-scan too quickly. - */ -static unsigned long event_scan_delay = 1*HZ; -static int first_pass = 1; - -static void rtas_event_scan(struct work_struct *w) -{ - unsigned int cpu; - - do_event_scan(); - - get_online_cpus(); - - cpu = next_cpu(smp_processor_id(), cpu_online_map); - if (cpu == NR_CPUS) { - cpu = first_cpu(cpu_online_map); - - if (first_pass) { - first_pass = 0; - event_scan_delay = 30*HZ/rtas_event_scan_rate; - - if (surveillance_timeout != -1) { - pr_debug("rtasd: enabling surveillance\n"); - enable_surveillance(surveillance_timeout); - pr_debug("rtasd: surveillance enabled\n"); - } - } - } - - schedule_delayed_work_on(cpu, &event_scan_work, - __round_jiffies_relative(event_scan_delay, cpu)); - - put_online_cpus(); -} - -static void start_event_scan(void) -{ - unsigned int err_type; - int rc; - - printk(KERN_DEBUG "RTAS daemon started\n"); - pr_debug("rtasd: will sleep for %d milliseconds\n", - (30000 / rtas_event_scan_rate)); - - /* See if we have any error stored in NVRAM */ - memset(logdata, 0, rtas_error_log_max); - rc = nvram_read_error_log(logdata, rtas_error_log_max, - &err_type, &error_log_cnt); - /* We can use rtas_log_buf now */ - logging_enabled = 1; - - if (!rc) { - if (err_type != ERR_FLAG_ALREADY_LOGGED) { - pSeries_log_error(logdata, err_type | ERR_FLAG_BOOT, 0); - } - } - - schedule_delayed_work_on(first_cpu(cpu_online_map), &event_scan_work, - event_scan_delay); -} - -static int __init rtas_init(void) -{ - struct proc_dir_entry *entry; - - if (!machine_is(pseries)) - return 0; - - /* No RTAS */ - event_scan = rtas_token("event-scan"); - if (event_scan == RTAS_UNKNOWN_SERVICE) { - printk(KERN_DEBUG "rtasd: no event-scan on system\n"); - return -ENODEV; - } - - rtas_event_scan_rate = rtas_token("rtas-event-scan-rate"); - if (rtas_event_scan_rate == RTAS_UNKNOWN_SERVICE) { - printk(KERN_ERR "rtasd: no rtas-event-scan-rate on system\n"); - return -ENODEV; - } - - /* Make room for the sequence number */ - rtas_error_log_max = rtas_get_error_log_max(); - rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int); - - rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER); - if (!rtas_log_buf) { - printk(KERN_ERR "rtasd: no memory\n"); - return -ENOMEM; - } - - entry = proc_create("ppc64/rtas/error_log", S_IRUSR, NULL, - &proc_rtas_log_operations); - if (!entry) - printk(KERN_ERR "Failed to create error_log proc entry\n"); - - start_event_scan(); - - return 0; -} - -static int __init surveillance_setup(char *str) -{ - int i; - - if (get_option(&str,&i)) { - if (i >= 0 && i <= 255) - surveillance_timeout = i; - } - - return 1; -} - -static int __init rtasmsgs_setup(char *str) -{ - if (strcmp(str, "on") == 0) - full_rtas_msgs = 1; - else if (strcmp(str, "off") == 0) - full_rtas_msgs = 0; - - return 1; -} -__initcall(rtas_init); -__setup("surveillance=", surveillance_setup); -__setup("rtasmsgs=", rtasmsgs_setup); diff --git a/arch/powerpc/platforms/pseries/scanlog.c b/arch/powerpc/platforms/pseries/scanlog.c index 417eca79df69..1b45c458f952 100644 --- a/arch/powerpc/platforms/pseries/scanlog.c +++ b/arch/powerpc/platforms/pseries/scanlog.c @@ -13,7 +13,7 @@ * of this data using this driver. A dump exists if the device-tree * /chosen/ibm,scan-log-data property exists. * - * This driver exports /proc/ppc64/scan-log-dump which can be read. + * This driver exports /proc/powerpc/scan-log-dump which can be read. * The driver supports only sequential reads. * * The driver looks at a write to the driver for the single word "reset". @@ -186,7 +186,7 @@ static int __init scanlog_init(void) if (!data) goto err; - ent = proc_create_data("ppc64/rtas/scan-log-dump", S_IRUSR, NULL, + ent = proc_create_data("powerpc/rtas/scan-log-dump", S_IRUSR, NULL, &scanlog_fops, data); if (!ent) goto err; diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index 440000cc7130..8868c012268a 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -48,6 +48,7 @@ #include "plpar_wrappers.h" #include "pseries.h" #include "xics.h" +#include "offline_states.h" /* @@ -84,6 +85,9 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu) /* Fixup atomic count: it exited inside IRQ handler. */ task_thread_info(paca[lcpu].__current)->preempt_count = 0; + if (get_cpu_current_state(lcpu) == CPU_STATE_INACTIVE) + goto out; + /* * If the RTAS start-cpu token does not exist then presume the * cpu is already spinning. @@ -98,6 +102,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu) return 0; } +out: return 1; } @@ -111,12 +116,16 @@ static void __devinit smp_xics_setup_cpu(int cpu) vpa_init(cpu); cpu_clear(cpu, of_spin_map); + set_cpu_current_state(cpu, CPU_STATE_ONLINE); + set_default_offline_state(cpu); } #endif /* CONFIG_XICS */ static void __devinit smp_pSeries_kick_cpu(int nr) { + long rc; + unsigned long hcpuid; BUG_ON(nr < 0 || nr >= NR_CPUS); if (!smp_startup_cpu(nr)) @@ -128,6 +137,16 @@ static void __devinit smp_pSeries_kick_cpu(int nr) * the processor will continue on to secondary_start */ paca[nr].cpu_start = 1; + + set_preferred_offline_state(nr, CPU_STATE_ONLINE); + + if (get_cpu_current_state(nr) == CPU_STATE_INACTIVE) { + hcpuid = get_hard_smp_processor_id(nr); + rc = plpar_hcall_norets(H_PROD, hcpuid); + if (rc != H_SUCCESS) + panic("Error: Prod to wake up processor %d Ret= %ld\n", + nr, rc); + } } static int smp_pSeries_cpu_bootable(unsigned int nr) diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c index b9bf0eedccf2..6592becd4410 100644 --- a/arch/powerpc/platforms/pseries/xics.c +++ b/arch/powerpc/platforms/pseries/xics.c @@ -157,7 +157,7 @@ static int get_irq_server(unsigned int virq, unsigned int strict_check) cpumask_t cpumask; cpumask_t tmp = CPU_MASK_NONE; - cpumask_copy(&cpumask, irq_desc[virq].affinity); + cpumask_copy(&cpumask, irq_to_desc(virq)->affinity); if (!distribute_irqs) return default_server; @@ -388,7 +388,7 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask) } static struct irq_chip xics_pic_direct = { - .typename = " XICS ", + .name = " XICS ", .startup = xics_startup, .mask = xics_mask_irq, .unmask = xics_unmask_irq, @@ -397,7 +397,7 @@ static struct irq_chip xics_pic_direct = { }; static struct irq_chip xics_pic_lpar = { - .typename = " XICS ", + .name = " XICS ", .startup = xics_startup, .mask = xics_mask_irq, .unmask = xics_unmask_irq, @@ -428,7 +428,7 @@ static int xics_host_map(struct irq_host *h, unsigned int virq, /* Insert the interrupt mapping into the radix tree for fast lookup */ irq_radix_revmap_insert(xics_host, virq, hw); - get_irq_desc(virq)->status |= IRQ_LEVEL; + irq_to_desc(virq)->status |= IRQ_LEVEL; set_irq_chip_and_handler(virq, xics_irq_chip, handle_fasteoi_irq); return 0; } @@ -852,7 +852,7 @@ void xics_migrate_irqs_away(void) /* We need to get IPIs still. */ if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS) continue; - desc = get_irq_desc(virq); + desc = irq_to_desc(virq); /* We only need to migrate enabled IRQS */ if (desc == NULL || desc->chip == NULL @@ -881,7 +881,7 @@ void xics_migrate_irqs_away(void) virq, cpu); /* Reset affinity to all cpus */ - cpumask_setall(irq_desc[virq].affinity); + cpumask_setall(irq_to_desc(virq)->affinity); desc->chip->set_affinity(virq, cpu_all_mask); unlock: spin_unlock_irqrestore(&desc->lock, flags); |