diff options
Diffstat (limited to 'drivers/staging/tidspbridge/rmgr/drv.c')
| -rw-r--r-- | drivers/staging/tidspbridge/rmgr/drv.c | 816 |
1 files changed, 0 insertions, 816 deletions
diff --git a/drivers/staging/tidspbridge/rmgr/drv.c b/drivers/staging/tidspbridge/rmgr/drv.c deleted file mode 100644 index 757ae20b38ee..000000000000 --- a/drivers/staging/tidspbridge/rmgr/drv.c +++ /dev/null @@ -1,816 +0,0 @@ -/* - * drv.c - * - * DSP-BIOS Bridge driver support functions for TI OMAP processors. - * - * DSP/BIOS Bridge resource allocation module. - * - * Copyright (C) 2005-2006 Texas Instruments, Inc. - * - * This package 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. - * - * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ -#include <linux/types.h> -#include <linux/list.h> - -/* ----------------------------------- Host OS */ -#include <dspbridge/host_os.h> - -/* ----------------------------------- DSP/BIOS Bridge */ -#include <dspbridge/dbdefs.h> - -/* ----------------------------------- This */ -#include <dspbridge/drv.h> -#include <dspbridge/dev.h> - -#include <dspbridge/node.h> -#include <dspbridge/proc.h> -#include <dspbridge/strm.h> -#include <dspbridge/nodepriv.h> -#include <dspbridge/dspchnl.h> -#include <dspbridge/resourcecleanup.h> - -/* ----------------------------------- Defines, Data Structures, Typedefs */ -struct drv_object { - struct list_head dev_list; - struct list_head dev_node_string; -}; - -/* - * This is the Device Extension. Named with the Prefix - * DRV_ since it is living in this module - */ -struct drv_ext { - struct list_head link; - char sz_string[MAXREGPATHLENGTH]; -}; - -/* ----------------------------------- Globals */ -static bool ext_phys_mem_pool_enabled; -struct ext_phys_mem_pool { - u32 phys_mem_base; - u32 phys_mem_size; - u32 virt_mem_base; - u32 next_phys_alloc_ptr; -}; -static struct ext_phys_mem_pool ext_mem_pool; - -/* ----------------------------------- Function Prototypes */ -static int request_bridge_resources(struct cfg_hostres *res); - - -/* GPP PROCESS CLEANUP CODE */ - -static int drv_proc_free_node_res(int id, void *p, void *data); - -/* Allocate and add a node resource element -* This function is called from .Node_Allocate. */ -int drv_insert_node_res_element(void *hnode, void *node_resource, - void *process_ctxt) -{ - struct node_res_object **node_res_obj = - (struct node_res_object **)node_resource; - struct process_context *ctxt = (struct process_context *)process_ctxt; - int retval; - - *node_res_obj = kzalloc(sizeof(struct node_res_object), GFP_KERNEL); - if (!*node_res_obj) - return -ENOMEM; - - (*node_res_obj)->node = hnode; - retval = idr_alloc(ctxt->node_id, *node_res_obj, 0, 0, GFP_KERNEL); - if (retval >= 0) { - (*node_res_obj)->id = retval; - return 0; - } - - kfree(*node_res_obj); - - if (retval == -ENOSPC) { - pr_err("%s: FAILED, IDR is FULL\n", __func__); - return -EFAULT; - } else { - pr_err("%s: OUT OF MEMORY\n", __func__); - return -ENOMEM; - } -} - -/* Release all Node resources and its context - * Actual Node De-Allocation */ -static int drv_proc_free_node_res(int id, void *p, void *data) -{ - struct process_context *ctxt = data; - int status; - struct node_res_object *node_res_obj = p; - u32 node_state; - - if (node_res_obj->node_allocated) { - node_state = node_get_state(node_res_obj->node); - if (node_state <= NODE_DELETING) { - if ((node_state == NODE_RUNNING) || - (node_state == NODE_PAUSED) || - (node_state == NODE_TERMINATING)) - node_terminate - (node_res_obj->node, &status); - - node_delete(node_res_obj, ctxt); - } - } - - return 0; -} - -/* Release all Mapped and Reserved DMM resources */ -int drv_remove_all_dmm_res_elements(void *process_ctxt) -{ - struct process_context *ctxt = (struct process_context *)process_ctxt; - int status = 0; - struct dmm_map_object *temp_map, *map_obj; - struct dmm_rsv_object *temp_rsv, *rsv_obj; - - /* Free DMM mapped memory resources */ - list_for_each_entry_safe(map_obj, temp_map, &ctxt->dmm_map_list, link) { - status = proc_un_map(ctxt->processor, - (void *)map_obj->dsp_addr, ctxt); - if (status) - pr_err("%s: proc_un_map failed!" - " status = 0x%xn", __func__, status); - } - - /* Free DMM reserved memory resources */ - list_for_each_entry_safe(rsv_obj, temp_rsv, &ctxt->dmm_rsv_list, link) { - status = proc_un_reserve_memory(ctxt->processor, (void *) - rsv_obj->dsp_reserved_addr, - ctxt); - if (status) - pr_err("%s: proc_un_reserve_memory failed!" - " status = 0x%xn", __func__, status); - } - return status; -} - -/* Update Node allocation status */ -void drv_proc_node_update_status(void *node_resource, s32 status) -{ - struct node_res_object *node_res_obj = - (struct node_res_object *)node_resource; - node_res_obj->node_allocated = status; -} - -/* Update Node Heap status */ -void drv_proc_node_update_heap_status(void *node_resource, s32 status) -{ - struct node_res_object *node_res_obj = - (struct node_res_object *)node_resource; - node_res_obj->heap_allocated = status; -} - -/* Release all Node resources and its context -* This is called from .bridge_release. - */ -int drv_remove_all_node_res_elements(void *process_ctxt) -{ - struct process_context *ctxt = process_ctxt; - - idr_for_each(ctxt->node_id, drv_proc_free_node_res, ctxt); - idr_destroy(ctxt->node_id); - - return 0; -} - -/* Allocate the STRM resource element -* This is called after the actual resource is allocated - */ -int drv_proc_insert_strm_res_element(void *stream_obj, - void *strm_res, void *process_ctxt) -{ - struct strm_res_object **pstrm_res = - (struct strm_res_object **)strm_res; - struct process_context *ctxt = (struct process_context *)process_ctxt; - int retval; - - *pstrm_res = kzalloc(sizeof(struct strm_res_object), GFP_KERNEL); - if (*pstrm_res == NULL) - return -EFAULT; - - (*pstrm_res)->stream = stream_obj; - retval = idr_alloc(ctxt->stream_id, *pstrm_res, 0, 0, GFP_KERNEL); - if (retval >= 0) { - (*pstrm_res)->id = retval; - return 0; - } - - if (retval == -ENOSPC) { - pr_err("%s: FAILED, IDR is FULL\n", __func__); - return -EPERM; - } else { - pr_err("%s: OUT OF MEMORY\n", __func__); - return -ENOMEM; - } -} - -static int drv_proc_free_strm_res(int id, void *p, void *process_ctxt) -{ - struct process_context *ctxt = process_ctxt; - struct strm_res_object *strm_res = p; - struct stream_info strm_info; - struct dsp_streaminfo user; - u8 **ap_buffer = NULL; - u8 *buf_ptr; - u32 ul_bytes; - u32 dw_arg; - s32 ul_buf_size; - - if (strm_res->num_bufs) { - ap_buffer = kmalloc((strm_res->num_bufs * - sizeof(u8 *)), GFP_KERNEL); - if (ap_buffer) { - strm_free_buffer(strm_res, - ap_buffer, - strm_res->num_bufs, - ctxt); - kfree(ap_buffer); - } - } - strm_info.user_strm = &user; - user.number_bufs_in_stream = 0; - strm_get_info(strm_res->stream, &strm_info, sizeof(strm_info)); - while (user.number_bufs_in_stream--) - strm_reclaim(strm_res->stream, &buf_ptr, &ul_bytes, - (u32 *) &ul_buf_size, &dw_arg); - strm_close(strm_res, ctxt); - return 0; -} - -/* Release all Stream resources and its context -* This is called from .bridge_release. - */ -int drv_remove_all_strm_res_elements(void *process_ctxt) -{ - struct process_context *ctxt = process_ctxt; - - idr_for_each(ctxt->stream_id, drv_proc_free_strm_res, ctxt); - idr_destroy(ctxt->stream_id); - - return 0; -} - -/* Updating the stream resource element */ -int drv_proc_update_strm_res(u32 num_bufs, void *strm_resources) -{ - int status = 0; - struct strm_res_object **strm_res = - (struct strm_res_object **)strm_resources; - - (*strm_res)->num_bufs = num_bufs; - return status; -} - -/* GPP PROCESS CLEANUP CODE END */ - -/* - * ======== = drv_create ======== = - * Purpose: - * DRV Object gets created only once during Driver Loading. - */ -int drv_create(struct drv_object **drv_obj) -{ - int status = 0; - struct drv_object *pdrv_object = NULL; - struct drv_data *drv_datap = dev_get_drvdata(bridge); - - pdrv_object = kzalloc(sizeof(struct drv_object), GFP_KERNEL); - if (pdrv_object) { - /* Create and Initialize List of device objects */ - INIT_LIST_HEAD(&pdrv_object->dev_list); - INIT_LIST_HEAD(&pdrv_object->dev_node_string); - } else { - status = -ENOMEM; - } - /* Store the DRV Object in the driver data */ - if (!status) { - if (drv_datap) { - drv_datap->drv_object = (void *)pdrv_object; - } else { - status = -EPERM; - pr_err("%s: Failed to store DRV object\n", __func__); - } - } - - if (!status) { - *drv_obj = pdrv_object; - } else { - /* Free the DRV Object */ - kfree(pdrv_object); - } - - return status; -} - -/* - * ======== = drv_destroy ======== = - * purpose: - * Invoked during bridge de-initialization - */ -int drv_destroy(struct drv_object *driver_obj) -{ - int status = 0; - struct drv_object *pdrv_object = (struct drv_object *)driver_obj; - struct drv_data *drv_datap = dev_get_drvdata(bridge); - - kfree(pdrv_object); - /* Update the DRV Object in the driver data */ - if (drv_datap) { - drv_datap->drv_object = NULL; - } else { - status = -EPERM; - pr_err("%s: Failed to store DRV object\n", __func__); - } - - return status; -} - -/* - * ======== drv_get_dev_object ======== - * Purpose: - * Given a index, returns a handle to DevObject from the list. - */ -int drv_get_dev_object(u32 index, struct drv_object *hdrv_obj, - struct dev_object **device_obj) -{ - int status = 0; - struct dev_object *dev_obj; - u32 i; - - dev_obj = (struct dev_object *)drv_get_first_dev_object(); - for (i = 0; i < index; i++) { - dev_obj = - (struct dev_object *)drv_get_next_dev_object((u32) dev_obj); - } - if (dev_obj) { - *device_obj = (struct dev_object *)dev_obj; - } else { - *device_obj = NULL; - status = -EPERM; - } - - return status; -} - -/* - * ======== drv_get_first_dev_object ======== - * Purpose: - * Retrieve the first Device Object handle from an internal linked list of - * of DEV_OBJECTs maintained by DRV. - */ -u32 drv_get_first_dev_object(void) -{ - u32 dw_dev_object = 0; - struct drv_object *pdrv_obj; - struct drv_data *drv_datap = dev_get_drvdata(bridge); - - if (drv_datap && drv_datap->drv_object) { - pdrv_obj = drv_datap->drv_object; - if (!list_empty(&pdrv_obj->dev_list)) - dw_dev_object = (u32) pdrv_obj->dev_list.next; - } else { - pr_err("%s: Failed to retrieve the object handle\n", __func__); - } - - return dw_dev_object; -} - -/* - * ======== DRV_GetFirstDevNodeString ======== - * Purpose: - * Retrieve the first Device Extension from an internal linked list of - * of Pointer to dev_node Strings maintained by DRV. - */ -u32 drv_get_first_dev_extension(void) -{ - u32 dw_dev_extension = 0; - struct drv_object *pdrv_obj; - struct drv_data *drv_datap = dev_get_drvdata(bridge); - - if (drv_datap && drv_datap->drv_object) { - pdrv_obj = drv_datap->drv_object; - if (!list_empty(&pdrv_obj->dev_node_string)) { - dw_dev_extension = - (u32) pdrv_obj->dev_node_string.next; - } - } else { - pr_err("%s: Failed to retrieve the object handle\n", __func__); - } - - return dw_dev_extension; -} - -/* - * ======== drv_get_next_dev_object ======== - * Purpose: - * Retrieve the next Device Object handle from an internal linked list of - * of DEV_OBJECTs maintained by DRV, after having previously called - * drv_get_first_dev_object() and zero or more DRV_GetNext. - */ -u32 drv_get_next_dev_object(u32 hdev_obj) -{ - u32 dw_next_dev_object = 0; - struct drv_object *pdrv_obj; - struct drv_data *drv_datap = dev_get_drvdata(bridge); - struct list_head *curr; - - if (drv_datap && drv_datap->drv_object) { - pdrv_obj = drv_datap->drv_object; - if (!list_empty(&pdrv_obj->dev_list)) { - curr = (struct list_head *)hdev_obj; - if (list_is_last(curr, &pdrv_obj->dev_list)) - return 0; - dw_next_dev_object = (u32) curr->next; - } - } else { - pr_err("%s: Failed to retrieve the object handle\n", __func__); - } - - return dw_next_dev_object; -} - -/* - * ======== drv_get_next_dev_extension ======== - * Purpose: - * Retrieve the next Device Extension from an internal linked list of - * of pointer to DevNodeString maintained by DRV, after having previously - * called drv_get_first_dev_extension() and zero or more - * drv_get_next_dev_extension(). - */ -u32 drv_get_next_dev_extension(u32 dev_extension) -{ - u32 dw_dev_extension = 0; - struct drv_object *pdrv_obj; - struct drv_data *drv_datap = dev_get_drvdata(bridge); - struct list_head *curr; - - if (drv_datap && drv_datap->drv_object) { - pdrv_obj = drv_datap->drv_object; - if (!list_empty(&pdrv_obj->dev_node_string)) { - curr = (struct list_head *)dev_extension; - if (list_is_last(curr, &pdrv_obj->dev_node_string)) - return 0; - dw_dev_extension = (u32) curr->next; - } - } else { - pr_err("%s: Failed to retrieve the object handle\n", __func__); - } - - return dw_dev_extension; -} - -/* - * ======== drv_insert_dev_object ======== - * Purpose: - * Insert a DevObject into the list of Manager object. - */ -int drv_insert_dev_object(struct drv_object *driver_obj, - struct dev_object *hdev_obj) -{ - struct drv_object *pdrv_object = (struct drv_object *)driver_obj; - - list_add_tail((struct list_head *)hdev_obj, &pdrv_object->dev_list); - - return 0; -} - -/* - * ======== drv_remove_dev_object ======== - * Purpose: - * Search for and remove a DeviceObject from the given list of DRV - * objects. - */ -int drv_remove_dev_object(struct drv_object *driver_obj, - struct dev_object *hdev_obj) -{ - int status = -EPERM; - struct drv_object *pdrv_object = (struct drv_object *)driver_obj; - struct list_head *cur_elem; - - /* Search list for p_proc_object: */ - list_for_each(cur_elem, &pdrv_object->dev_list) { - /* If found, remove it. */ - if ((struct dev_object *)cur_elem == hdev_obj) { - list_del(cur_elem); - status = 0; - break; - } - } - - return status; -} - -/* - * ======== drv_request_resources ======== - * Purpose: - * Requests resources from the OS. - */ -int drv_request_resources(u32 dw_context, u32 *dev_node_strg) -{ - int status = 0; - struct drv_object *pdrv_object; - struct drv_ext *pszdev_node; - struct drv_data *drv_datap = dev_get_drvdata(bridge); - - /* - * Allocate memory to hold the string. This will live until - * it is freed in the Release resources. Update the driver object - * list. - */ - - if (!drv_datap || !drv_datap->drv_object) - status = -ENODATA; - else - pdrv_object = drv_datap->drv_object; - - if (!status) { - pszdev_node = kzalloc(sizeof(struct drv_ext), GFP_KERNEL); - if (pszdev_node) { - strncpy(pszdev_node->sz_string, - (char *)dw_context, MAXREGPATHLENGTH - 1); - pszdev_node->sz_string[MAXREGPATHLENGTH - 1] = '\0'; - /* Update the Driver Object List */ - *dev_node_strg = (u32) pszdev_node->sz_string; - list_add_tail(&pszdev_node->link, - &pdrv_object->dev_node_string); - } else { - status = -ENOMEM; - *dev_node_strg = 0; - } - } else { - dev_dbg(bridge, "%s: Failed to get Driver Object from Registry", - __func__); - *dev_node_strg = 0; - } - - return status; -} - -/* - * ======== drv_release_resources ======== - * Purpose: - * Releases resources from the OS. - */ -int drv_release_resources(u32 dw_context, struct drv_object *hdrv_obj) -{ - int status = 0; - struct drv_ext *pszdev_node; - - /* - * Irrespective of the status go ahead and clean it - * The following will over write the status. - */ - for (pszdev_node = (struct drv_ext *)drv_get_first_dev_extension(); - pszdev_node != NULL; pszdev_node = (struct drv_ext *) - drv_get_next_dev_extension((u32) pszdev_node)) { - if ((u32) pszdev_node == dw_context) { - /* Found it */ - /* Delete from the Driver object list */ - list_del(&pszdev_node->link); - kfree(pszdev_node); - break; - } - } - return status; -} - -/* - * ======== request_bridge_resources ======== - * Purpose: - * Reserves shared memory for bridge. - */ -static int request_bridge_resources(struct cfg_hostres *res) -{ - struct cfg_hostres *host_res = res; - - /* num_mem_windows must not be more than CFG_MAXMEMREGISTERS */ - host_res->num_mem_windows = 2; - - /* First window is for DSP internal memory */ - dev_dbg(bridge, "mem_base[0] 0x%x\n", host_res->mem_base[0]); - dev_dbg(bridge, "mem_base[3] 0x%x\n", host_res->mem_base[3]); - dev_dbg(bridge, "dmmu_base %p\n", host_res->dmmu_base); - - /* for 24xx base port is not mapping the mamory for DSP - * internal memory TODO Do a ioremap here */ - /* Second window is for DSP external memory shared with MPU */ - - /* These are hard-coded values */ - host_res->birq_registers = 0; - host_res->birq_attrib = 0; - host_res->offset_for_monitor = 0; - host_res->chnl_offset = 0; - /* CHNL_MAXCHANNELS */ - host_res->num_chnls = CHNL_MAXCHANNELS; - host_res->chnl_buf_size = 0x400; - - return 0; -} - -/* - * ======== drv_request_bridge_res_dsp ======== - * Purpose: - * Reserves shared memory for bridge. - */ -int drv_request_bridge_res_dsp(void **phost_resources) -{ - int status = 0; - struct cfg_hostres *host_res; - u32 dw_buff_size; - u32 dma_addr; - u32 shm_size; - struct drv_data *drv_datap = dev_get_drvdata(bridge); - - dw_buff_size = sizeof(struct cfg_hostres); - - host_res = kzalloc(dw_buff_size, GFP_KERNEL); - - if (host_res != NULL) { - request_bridge_resources(host_res); - /* num_mem_windows must not be more than CFG_MAXMEMREGISTERS */ - host_res->num_mem_windows = 4; - - host_res->mem_base[0] = 0; - host_res->mem_base[2] = (u32) ioremap(OMAP_DSP_MEM1_BASE, - OMAP_DSP_MEM1_SIZE); - host_res->mem_base[3] = (u32) ioremap(OMAP_DSP_MEM2_BASE, - OMAP_DSP_MEM2_SIZE); - host_res->mem_base[4] = (u32) ioremap(OMAP_DSP_MEM3_BASE, - OMAP_DSP_MEM3_SIZE); - host_res->per_base = ioremap(OMAP_PER_CM_BASE, - OMAP_PER_CM_SIZE); - host_res->per_pm_base = ioremap(OMAP_PER_PRM_BASE, - OMAP_PER_PRM_SIZE); - host_res->core_pm_base = ioremap(OMAP_CORE_PRM_BASE, - OMAP_CORE_PRM_SIZE); - host_res->dmmu_base = ioremap(OMAP_DMMU_BASE, - OMAP_DMMU_SIZE); - - dev_dbg(bridge, "mem_base[0] 0x%x\n", - host_res->mem_base[0]); - dev_dbg(bridge, "mem_base[1] 0x%x\n", - host_res->mem_base[1]); - dev_dbg(bridge, "mem_base[2] 0x%x\n", - host_res->mem_base[2]); - dev_dbg(bridge, "mem_base[3] 0x%x\n", - host_res->mem_base[3]); - dev_dbg(bridge, "mem_base[4] 0x%x\n", - host_res->mem_base[4]); - dev_dbg(bridge, "dmmu_base %p\n", host_res->dmmu_base); - - shm_size = drv_datap->shm_size; - if (shm_size >= 0x10000) { - /* Allocate Physically contiguous, - * non-cacheable memory */ - host_res->mem_base[1] = - (u32) mem_alloc_phys_mem(shm_size, 0x100000, - &dma_addr); - if (host_res->mem_base[1] == 0) { - status = -ENOMEM; - pr_err("shm reservation Failed\n"); - } else { - host_res->mem_length[1] = shm_size; - host_res->mem_phys[1] = dma_addr; - - dev_dbg(bridge, "%s: Bridge shm address 0x%x " - "dma_addr %x size %x\n", __func__, - host_res->mem_base[1], - dma_addr, shm_size); - } - } - if (!status) { - /* These are hard-coded values */ - host_res->birq_registers = 0; - host_res->birq_attrib = 0; - host_res->offset_for_monitor = 0; - host_res->chnl_offset = 0; - /* CHNL_MAXCHANNELS */ - host_res->num_chnls = CHNL_MAXCHANNELS; - host_res->chnl_buf_size = 0x400; - dw_buff_size = sizeof(struct cfg_hostres); - } - *phost_resources = host_res; - } - /* End Mem alloc */ - return status; -} - -void mem_ext_phys_pool_init(u32 pool_phys_base, u32 pool_size) -{ - u32 pool_virt_base; - - /* get the virtual address for the physical memory pool passed */ - pool_virt_base = (u32) ioremap(pool_phys_base, pool_size); - - if ((void **)pool_virt_base == NULL) { - pr_err("%s: external physical memory map failed\n", __func__); - ext_phys_mem_pool_enabled = false; - } else { - ext_mem_pool.phys_mem_base = pool_phys_base; - ext_mem_pool.phys_mem_size = pool_size; - ext_mem_pool.virt_mem_base = pool_virt_base; - ext_mem_pool.next_phys_alloc_ptr = pool_phys_base; - ext_phys_mem_pool_enabled = true; - } -} - -void mem_ext_phys_pool_release(void) -{ - if (ext_phys_mem_pool_enabled) { - iounmap((void *)(ext_mem_pool.virt_mem_base)); - ext_phys_mem_pool_enabled = false; - } -} - -/* - * ======== mem_ext_phys_mem_alloc ======== - * Purpose: - * Allocate physically contiguous, uncached memory from external memory pool - */ - -static void *mem_ext_phys_mem_alloc(u32 bytes, u32 align, u32 *phys_addr) -{ - u32 new_alloc_ptr; - u32 offset; - u32 virt_addr; - - if (align == 0) - align = 1; - - if (bytes > ((ext_mem_pool.phys_mem_base + ext_mem_pool.phys_mem_size) - - ext_mem_pool.next_phys_alloc_ptr)) { - phys_addr = NULL; - return NULL; - } else { - offset = (ext_mem_pool.next_phys_alloc_ptr & (align - 1)); - if (offset == 0) - new_alloc_ptr = ext_mem_pool.next_phys_alloc_ptr; - else - new_alloc_ptr = (ext_mem_pool.next_phys_alloc_ptr) + - (align - offset); - if ((new_alloc_ptr + bytes) <= - (ext_mem_pool.phys_mem_base + ext_mem_pool.phys_mem_size)) { - /* we can allocate */ - *phys_addr = new_alloc_ptr; - ext_mem_pool.next_phys_alloc_ptr = - new_alloc_ptr + bytes; - virt_addr = - ext_mem_pool.virt_mem_base + (new_alloc_ptr - - ext_mem_pool. - phys_mem_base); - return (void *)virt_addr; - } else { - *phys_addr = 0; - return NULL; - } - } -} - -/* - * ======== mem_alloc_phys_mem ======== - * Purpose: - * Allocate physically contiguous, uncached memory - */ -void *mem_alloc_phys_mem(u32 byte_size, u32 align_mask, - u32 *physical_address) -{ - void *va_mem = NULL; - dma_addr_t pa_mem; - - if (byte_size > 0) { - if (ext_phys_mem_pool_enabled) { - va_mem = mem_ext_phys_mem_alloc(byte_size, align_mask, - (u32 *) &pa_mem); - } else - va_mem = dma_alloc_coherent(NULL, byte_size, &pa_mem, - GFP_KERNEL); - if (va_mem == NULL) - *physical_address = 0; - else - *physical_address = pa_mem; - } - return va_mem; -} - -/* - * ======== mem_free_phys_mem ======== - * Purpose: - * Free the given block of physically contiguous memory. - */ -void mem_free_phys_mem(void *virtual_address, u32 physical_address, - u32 byte_size) -{ - if (!ext_phys_mem_pool_enabled) - dma_free_coherent(NULL, byte_size, virtual_address, - physical_address); -} |