| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * PS3 system bus driver. |
| * |
| * Copyright (C) 2006 Sony Computer Entertainment Inc. |
| * Copyright 2006 Sony Corp. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/export.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/err.h> |
| #include <linux/slab.h> |
| |
| #include <asm/udbg.h> |
| #include <asm/lv1call.h> |
| #include <asm/firmware.h> |
| #include <asm/cell-regs.h> |
| |
| #include "platform.h" |
| |
| static struct device ps3_system_bus = { |
| .init_name = "ps3_system", |
| }; |
| |
| /* FIXME: need device usage counters! */ |
| static struct { |
| struct mutex mutex; |
| int sb_11; /* usb 0 */ |
| int sb_12; /* usb 0 */ |
| int gpu; |
| } usage_hack; |
| |
| static int ps3_is_device(struct ps3_system_bus_device *dev, u64 bus_id, |
| u64 dev_id) |
| { |
| return dev->bus_id == bus_id && dev->dev_id == dev_id; |
| } |
| |
| static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev) |
| { |
| int result; |
| |
| BUG_ON(!dev->bus_id); |
| mutex_lock(&usage_hack.mutex); |
| |
| if (ps3_is_device(dev, 1, 1)) { |
| usage_hack.sb_11++; |
| if (usage_hack.sb_11 > 1) { |
| result = 0; |
| goto done; |
| } |
| } |
| |
| if (ps3_is_device(dev, 1, 2)) { |
| usage_hack.sb_12++; |
| if (usage_hack.sb_12 > 1) { |
| result = 0; |
| goto done; |
| } |
| } |
| |
| result = lv1_open_device(dev->bus_id, dev->dev_id, 0); |
| |
| if (result) { |
| pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__, |
| __LINE__, ps3_result(result)); |
| result = -EPERM; |
| } |
| |
| done: |
| mutex_unlock(&usage_hack.mutex); |
| return result; |
| } |
| |
| static int ps3_close_hv_device_sb(struct ps3_system_bus_device *dev) |
| { |
| int result; |
| |
| BUG_ON(!dev->bus_id); |
| mutex_lock(&usage_hack.mutex); |
| |
| if (ps3_is_device(dev, 1, 1)) { |
| usage_hack.sb_11--; |
| if (usage_hack.sb_11) { |
| result = 0; |
| goto done; |
| } |
| } |
| |
| if (ps3_is_device(dev, 1, 2)) { |
| usage_hack.sb_12--; |
| if (usage_hack.sb_12) { |
| result = 0; |
| goto done; |
| } |
| } |
| |
| result = lv1_close_device(dev->bus_id, dev->dev_id); |
| BUG_ON(result); |
| |
| done: |
| mutex_unlock(&usage_hack.mutex); |
| return result; |
| } |
| |
| static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev) |
| { |
| int result; |
| |
| mutex_lock(&usage_hack.mutex); |
| |
| usage_hack.gpu++; |
| if (usage_hack.gpu > 1) { |
| result = 0; |
| goto done; |
| } |
| |
| result = lv1_gpu_open(0); |
| |
| if (result) { |
| pr_debug("%s:%d: lv1_gpu_open failed: %s\n", __func__, |
| __LINE__, ps3_result(result)); |
| result = -EPERM; |
| } |
| |
| done: |
| mutex_unlock(&usage_hack.mutex); |
| return result; |
| } |
| |
| static int ps3_close_hv_device_gpu(struct ps3_system_bus_device *dev) |
| { |
| int result; |
| |
| mutex_lock(&usage_hack.mutex); |
| |
| usage_hack.gpu--; |
| if (usage_hack.gpu) { |
| result = 0; |
| goto done; |
| } |
| |
| result = lv1_gpu_close(); |
| BUG_ON(result); |
| |
| done: |
| mutex_unlock(&usage_hack.mutex); |
| return result; |
| } |
| |
| int ps3_open_hv_device(struct ps3_system_bus_device *dev) |
| { |
| BUG_ON(!dev); |
| pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id); |
| |
| switch (dev->match_id) { |
| case PS3_MATCH_ID_EHCI: |
| case PS3_MATCH_ID_OHCI: |
| case PS3_MATCH_ID_GELIC: |
| case PS3_MATCH_ID_STOR_DISK: |
| case PS3_MATCH_ID_STOR_ROM: |
| case PS3_MATCH_ID_STOR_FLASH: |
| return ps3_open_hv_device_sb(dev); |
| |
| case PS3_MATCH_ID_SOUND: |
| case PS3_MATCH_ID_GPU: |
| return ps3_open_hv_device_gpu(dev); |
| |
| case PS3_MATCH_ID_AV_SETTINGS: |
| case PS3_MATCH_ID_SYSTEM_MANAGER: |
| pr_debug("%s:%d: unsupported match_id: %u\n", __func__, |
| __LINE__, dev->match_id); |
| pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__, |
| dev->bus_id); |
| BUG(); |
| return -EINVAL; |
| |
| default: |
| break; |
| } |
| |
| pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__, |
| dev->match_id); |
| BUG(); |
| return -ENODEV; |
| } |
| EXPORT_SYMBOL_GPL(ps3_open_hv_device); |
| |
| int ps3_close_hv_device(struct ps3_system_bus_device *dev) |
| { |
| BUG_ON(!dev); |
| pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id); |
| |
| switch (dev->match_id) { |
| case PS3_MATCH_ID_EHCI: |
| case PS3_MATCH_ID_OHCI: |
| case PS3_MATCH_ID_GELIC: |
| case PS3_MATCH_ID_STOR_DISK: |
| case PS3_MATCH_ID_STOR_ROM: |
| case PS3_MATCH_ID_STOR_FLASH: |
| return ps3_close_hv_device_sb(dev); |
| |
| case PS3_MATCH_ID_SOUND: |
| case PS3_MATCH_ID_GPU: |
| return ps3_close_hv_device_gpu(dev); |
| |
| case PS3_MATCH_ID_AV_SETTINGS: |
| case PS3_MATCH_ID_SYSTEM_MANAGER: |
| pr_debug("%s:%d: unsupported match_id: %u\n", __func__, |
| __LINE__, dev->match_id); |
| pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__, |
| dev->bus_id); |
| BUG(); |
| return -EINVAL; |
| |
| default: |
| break; |
| } |
| |
| pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__, |
| dev->match_id); |
| BUG(); |
| return -ENODEV; |
| } |
| EXPORT_SYMBOL_GPL(ps3_close_hv_device); |
| |
| #define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__) |
| static void _dump_mmio_region(const struct ps3_mmio_region* r, |
| const char* func, int line) |
| { |
| pr_debug("%s:%d: dev %llu:%llu\n", func, line, r->dev->bus_id, |
| r->dev->dev_id); |
| pr_debug("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr); |
| pr_debug("%s:%d: len %lxh\n", func, line, r->len); |
| pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr); |
| } |
| |
| static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r) |
| { |
| int result; |
| u64 lpar_addr; |
| |
| result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id, |
| r->bus_addr, r->len, r->page_size, &lpar_addr); |
| r->lpar_addr = lpar_addr; |
| |
| if (result) { |
| pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n", |
| __func__, __LINE__, ps3_result(result)); |
| r->lpar_addr = 0; |
| } |
| |
| dump_mmio_region(r); |
| return result; |
| } |
| |
| static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r) |
| { |
| /* device specific; do nothing currently */ |
| return 0; |
| } |
| |
| int ps3_mmio_region_create(struct ps3_mmio_region *r) |
| { |
| return r->mmio_ops->create(r); |
| } |
| EXPORT_SYMBOL_GPL(ps3_mmio_region_create); |
| |
| static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r) |
| { |
| int result; |
| |
| dump_mmio_region(r); |
| result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id, |
| r->lpar_addr); |
| |
| if (result) |
| pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n", |
| __func__, __LINE__, ps3_result(result)); |
| |
| r->lpar_addr = 0; |
| return result; |
| } |
| |
| static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r) |
| { |
| /* device specific; do nothing currently */ |
| return 0; |
| } |
| |
| |
| int ps3_free_mmio_region(struct ps3_mmio_region *r) |
| { |
| return r->mmio_ops->free(r); |
| } |
| |
| EXPORT_SYMBOL_GPL(ps3_free_mmio_region); |
| |
| static const struct ps3_mmio_region_ops ps3_mmio_sb_region_ops = { |
| .create = ps3_sb_mmio_region_create, |
| .free = ps3_sb_free_mmio_region |
| }; |
| |
| static const struct ps3_mmio_region_ops ps3_mmio_ioc0_region_ops = { |
| .create = ps3_ioc0_mmio_region_create, |
| .free = ps3_ioc0_free_mmio_region |
| }; |
| |
| int ps3_mmio_region_init(struct ps3_system_bus_device *dev, |
| struct ps3_mmio_region *r, unsigned long bus_addr, unsigned long len, |
| enum ps3_mmio_page_size page_size) |
| { |
| r->dev = dev; |
| r->bus_addr = bus_addr; |
| r->len = len; |
| r->page_size = page_size; |
| switch (dev->dev_type) { |
| case PS3_DEVICE_TYPE_SB: |
| r->mmio_ops = &ps3_mmio_sb_region_ops; |
| break; |
| case PS3_DEVICE_TYPE_IOC0: |
| r->mmio_ops = &ps3_mmio_ioc0_region_ops; |
| break; |
| default: |
| BUG(); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(ps3_mmio_region_init); |
| |
| static int ps3_system_bus_match(struct device *_dev, |
| struct device_driver *_drv) |
| { |
| int result; |
| struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv); |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| |
| if (!dev->match_sub_id) |
| result = dev->match_id == drv->match_id; |
| else |
| result = dev->match_sub_id == drv->match_sub_id && |
| dev->match_id == drv->match_id; |
| |
| if (result) |
| pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n", |
| __func__, __LINE__, |
| dev->match_id, dev->match_sub_id, dev_name(&dev->core), |
| drv->match_id, drv->match_sub_id, drv->core.name); |
| else |
| pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n", |
| __func__, __LINE__, |
| dev->match_id, dev->match_sub_id, dev_name(&dev->core), |
| drv->match_id, drv->match_sub_id, drv->core.name); |
| |
| return result; |
| } |
| |
| static int ps3_system_bus_probe(struct device *_dev) |
| { |
| int result = 0; |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| struct ps3_system_bus_driver *drv; |
| |
| BUG_ON(!dev); |
| dev_dbg(_dev, "%s:%d\n", __func__, __LINE__); |
| |
| drv = ps3_system_bus_dev_to_system_bus_drv(dev); |
| BUG_ON(!drv); |
| |
| if (drv->probe) |
| result = drv->probe(dev); |
| else |
| pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__, |
| dev_name(&dev->core)); |
| |
| pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); |
| return result; |
| } |
| |
| static int ps3_system_bus_remove(struct device *_dev) |
| { |
| int result = 0; |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| struct ps3_system_bus_driver *drv; |
| |
| BUG_ON(!dev); |
| dev_dbg(_dev, "%s:%d\n", __func__, __LINE__); |
| |
| drv = ps3_system_bus_dev_to_system_bus_drv(dev); |
| BUG_ON(!drv); |
| |
| if (drv->remove) |
| result = drv->remove(dev); |
| else |
| dev_dbg(&dev->core, "%s:%d %s: no remove method\n", |
| __func__, __LINE__, drv->core.name); |
| |
| pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core)); |
| return result; |
| } |
| |
| static void ps3_system_bus_shutdown(struct device *_dev) |
| { |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| struct ps3_system_bus_driver *drv; |
| |
| BUG_ON(!dev); |
| |
| dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, |
| dev->match_id); |
| |
| if (!dev->core.driver) { |
| dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, |
| __LINE__); |
| return; |
| } |
| |
| drv = ps3_system_bus_dev_to_system_bus_drv(dev); |
| |
| BUG_ON(!drv); |
| |
| dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__, |
| dev_name(&dev->core), drv->core.name); |
| |
| if (drv->shutdown) |
| drv->shutdown(dev); |
| else if (drv->remove) { |
| dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n", |
| __func__, __LINE__, drv->core.name); |
| drv->remove(dev); |
| } else { |
| dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n", |
| __func__, __LINE__, drv->core.name); |
| BUG(); |
| } |
| |
| dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); |
| } |
| |
| static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) |
| { |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| |
| if (add_uevent_var(env, "MODALIAS=ps3:%d:%d", dev->match_id, |
| dev->match_sub_id)) |
| return -ENOMEM; |
| return 0; |
| } |
| |
| static ssize_t modalias_show(struct device *_dev, struct device_attribute *a, |
| char *buf) |
| { |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id, |
| dev->match_sub_id); |
| |
| return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; |
| } |
| static DEVICE_ATTR_RO(modalias); |
| |
| static struct attribute *ps3_system_bus_dev_attrs[] = { |
| &dev_attr_modalias.attr, |
| NULL, |
| }; |
| ATTRIBUTE_GROUPS(ps3_system_bus_dev); |
| |
| struct bus_type ps3_system_bus_type = { |
| .name = "ps3_system_bus", |
| .match = ps3_system_bus_match, |
| .uevent = ps3_system_bus_uevent, |
| .probe = ps3_system_bus_probe, |
| .remove = ps3_system_bus_remove, |
| .shutdown = ps3_system_bus_shutdown, |
| .dev_groups = ps3_system_bus_dev_groups, |
| }; |
| |
| static int __init ps3_system_bus_init(void) |
| { |
| int result; |
| |
| if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) |
| return -ENODEV; |
| |
| pr_debug(" -> %s:%d\n", __func__, __LINE__); |
| |
| mutex_init(&usage_hack.mutex); |
| |
| result = device_register(&ps3_system_bus); |
| BUG_ON(result); |
| |
| result = bus_register(&ps3_system_bus_type); |
| BUG_ON(result); |
| |
| pr_debug(" <- %s:%d\n", __func__, __LINE__); |
| return result; |
| } |
| |
| core_initcall(ps3_system_bus_init); |
| |
| /* Allocates a contiguous real buffer and creates mappings over it. |
| * Returns the virtual address of the buffer and sets dma_handle |
| * to the dma address (mapping) of the first page. |
| */ |
| static void * ps3_alloc_coherent(struct device *_dev, size_t size, |
| dma_addr_t *dma_handle, gfp_t flag, |
| unsigned long attrs) |
| { |
| int result; |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| unsigned long virt_addr; |
| |
| flag &= ~(__GFP_DMA | __GFP_HIGHMEM); |
| flag |= __GFP_ZERO; |
| |
| virt_addr = __get_free_pages(flag, get_order(size)); |
| |
| if (!virt_addr) { |
| pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__); |
| goto clean_none; |
| } |
| |
| result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle, |
| CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | |
| CBE_IOPTE_SO_RW | CBE_IOPTE_M); |
| |
| if (result) { |
| pr_debug("%s:%d: ps3_dma_map failed (%d)\n", |
| __func__, __LINE__, result); |
| BUG_ON("check region type"); |
| goto clean_alloc; |
| } |
| |
| return (void*)virt_addr; |
| |
| clean_alloc: |
| free_pages(virt_addr, get_order(size)); |
| clean_none: |
| dma_handle = NULL; |
| return NULL; |
| } |
| |
| static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr, |
| dma_addr_t dma_handle, unsigned long attrs) |
| { |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| |
| ps3_dma_unmap(dev->d_region, dma_handle, size); |
| free_pages((unsigned long)vaddr, get_order(size)); |
| } |
| |
| /* Creates TCEs for a user provided buffer. The user buffer must be |
| * contiguous real kernel storage (not vmalloc). The address passed here |
| * comprises a page address and offset into that page. The dma_addr_t |
| * returned will point to the same byte within the page as was passed in. |
| */ |
| |
| static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page, |
| unsigned long offset, size_t size, enum dma_data_direction direction, |
| unsigned long attrs) |
| { |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| int result; |
| dma_addr_t bus_addr; |
| void *ptr = page_address(page) + offset; |
| |
| result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, |
| &bus_addr, |
| CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | |
| CBE_IOPTE_SO_RW | CBE_IOPTE_M); |
| |
| if (result) { |
| pr_debug("%s:%d: ps3_dma_map failed (%d)\n", |
| __func__, __LINE__, result); |
| } |
| |
| return bus_addr; |
| } |
| |
| static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page, |
| unsigned long offset, size_t size, |
| enum dma_data_direction direction, |
| unsigned long attrs) |
| { |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| int result; |
| dma_addr_t bus_addr; |
| u64 iopte_flag; |
| void *ptr = page_address(page) + offset; |
| |
| iopte_flag = CBE_IOPTE_M; |
| switch (direction) { |
| case DMA_BIDIRECTIONAL: |
| iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; |
| break; |
| case DMA_TO_DEVICE: |
| iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_SO_R; |
| break; |
| case DMA_FROM_DEVICE: |
| iopte_flag |= CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW; |
| break; |
| default: |
| /* not happned */ |
| BUG(); |
| }; |
| result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size, |
| &bus_addr, iopte_flag); |
| |
| if (result) { |
| pr_debug("%s:%d: ps3_dma_map failed (%d)\n", |
| __func__, __LINE__, result); |
| } |
| return bus_addr; |
| } |
| |
| static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr, |
| size_t size, enum dma_data_direction direction, unsigned long attrs) |
| { |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| int result; |
| |
| result = ps3_dma_unmap(dev->d_region, dma_addr, size); |
| |
| if (result) { |
| pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n", |
| __func__, __LINE__, result); |
| } |
| } |
| |
| static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl, |
| int nents, enum dma_data_direction direction, unsigned long attrs) |
| { |
| #if defined(CONFIG_PS3_DYNAMIC_DMA) |
| BUG_ON("do"); |
| return -EPERM; |
| #else |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| struct scatterlist *sg; |
| int i; |
| |
| for_each_sg(sgl, sg, nents, i) { |
| int result = ps3_dma_map(dev->d_region, sg_phys(sg), |
| sg->length, &sg->dma_address, 0); |
| |
| if (result) { |
| pr_debug("%s:%d: ps3_dma_map failed (%d)\n", |
| __func__, __LINE__, result); |
| return -EINVAL; |
| } |
| |
| sg->dma_length = sg->length; |
| } |
| |
| return nents; |
| #endif |
| } |
| |
| static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg, |
| int nents, |
| enum dma_data_direction direction, |
| unsigned long attrs) |
| { |
| BUG(); |
| return 0; |
| } |
| |
| static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg, |
| int nents, enum dma_data_direction direction, unsigned long attrs) |
| { |
| #if defined(CONFIG_PS3_DYNAMIC_DMA) |
| BUG_ON("do"); |
| #endif |
| } |
| |
| static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg, |
| int nents, enum dma_data_direction direction, |
| unsigned long attrs) |
| { |
| BUG(); |
| } |
| |
| static int ps3_dma_supported(struct device *_dev, u64 mask) |
| { |
| return mask >= DMA_BIT_MASK(32); |
| } |
| |
| static const struct dma_map_ops ps3_sb_dma_ops = { |
| .alloc = ps3_alloc_coherent, |
| .free = ps3_free_coherent, |
| .map_sg = ps3_sb_map_sg, |
| .unmap_sg = ps3_sb_unmap_sg, |
| .dma_supported = ps3_dma_supported, |
| .map_page = ps3_sb_map_page, |
| .unmap_page = ps3_unmap_page, |
| .mmap = dma_common_mmap, |
| .get_sgtable = dma_common_get_sgtable, |
| }; |
| |
| static const struct dma_map_ops ps3_ioc0_dma_ops = { |
| .alloc = ps3_alloc_coherent, |
| .free = ps3_free_coherent, |
| .map_sg = ps3_ioc0_map_sg, |
| .unmap_sg = ps3_ioc0_unmap_sg, |
| .dma_supported = ps3_dma_supported, |
| .map_page = ps3_ioc0_map_page, |
| .unmap_page = ps3_unmap_page, |
| .mmap = dma_common_mmap, |
| .get_sgtable = dma_common_get_sgtable, |
| }; |
| |
| /** |
| * ps3_system_bus_release_device - remove a device from the system bus |
| */ |
| |
| static void ps3_system_bus_release_device(struct device *_dev) |
| { |
| struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); |
| kfree(dev); |
| } |
| |
| /** |
| * ps3_system_bus_device_register - add a device to the system bus |
| * |
| * ps3_system_bus_device_register() expects the dev object to be allocated |
| * dynamically by the caller. The system bus takes ownership of the dev |
| * object and frees the object in ps3_system_bus_release_device(). |
| */ |
| |
| int ps3_system_bus_device_register(struct ps3_system_bus_device *dev) |
| { |
| int result; |
| static unsigned int dev_ioc0_count; |
| static unsigned int dev_sb_count; |
| static unsigned int dev_vuart_count; |
| static unsigned int dev_lpm_count; |
| |
| if (!dev->core.parent) |
| dev->core.parent = &ps3_system_bus; |
| dev->core.bus = &ps3_system_bus_type; |
| dev->core.release = ps3_system_bus_release_device; |
| |
| switch (dev->dev_type) { |
| case PS3_DEVICE_TYPE_IOC0: |
| dev->core.dma_ops = &ps3_ioc0_dma_ops; |
| dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count); |
| break; |
| case PS3_DEVICE_TYPE_SB: |
| dev->core.dma_ops = &ps3_sb_dma_ops; |
| dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count); |
| |
| break; |
| case PS3_DEVICE_TYPE_VUART: |
| dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count); |
| break; |
| case PS3_DEVICE_TYPE_LPM: |
| dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count); |
| break; |
| default: |
| BUG(); |
| }; |
| |
| dev->core.of_node = NULL; |
| set_dev_node(&dev->core, 0); |
| |
| pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core)); |
| |
| result = device_register(&dev->core); |
| return result; |
| } |
| |
| EXPORT_SYMBOL_GPL(ps3_system_bus_device_register); |
| |
| int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv) |
| { |
| int result; |
| |
| pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
| |
| if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) |
| return -ENODEV; |
| |
| drv->core.bus = &ps3_system_bus_type; |
| |
| result = driver_register(&drv->core); |
| pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
| return result; |
| } |
| |
| EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register); |
| |
| void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv) |
| { |
| pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
| driver_unregister(&drv->core); |
| pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name); |
| } |
| |
| EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister); |