2 * PS3 system bus driver.
4 * Copyright (C) 2006 Sony Computer Entertainment Inc.
5 * Copyright 2006 Sony Corp.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/kernel.h>
22 #include <linux/init.h>
23 #include <linux/module.h>
24 #include <linux/dma-mapping.h>
25 #include <linux/err.h>
28 #include <asm/lv1call.h>
29 #include <asm/firmware.h>
30 #include <asm/iommu.h>
34 static struct device ps3_system_bus = {
35 .init_name = "ps3_system",
38 /* FIXME: need device usage counters! */
41 int sb_11; /* usb 0 */
42 int sb_12; /* usb 0 */
46 static int ps3_is_device(struct ps3_system_bus_device *dev, u64 bus_id,
49 return dev->bus_id == bus_id && dev->dev_id == dev_id;
52 static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev)
57 mutex_lock(&usage_hack.mutex);
59 if (ps3_is_device(dev, 1, 1)) {
61 if (usage_hack.sb_11 > 1) {
67 if (ps3_is_device(dev, 1, 2)) {
69 if (usage_hack.sb_12 > 1) {
75 result = lv1_open_device(dev->bus_id, dev->dev_id, 0);
78 pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__,
79 __LINE__, ps3_result(result));
84 mutex_unlock(&usage_hack.mutex);
88 static int ps3_close_hv_device_sb(struct ps3_system_bus_device *dev)
93 mutex_lock(&usage_hack.mutex);
95 if (ps3_is_device(dev, 1, 1)) {
97 if (usage_hack.sb_11) {
103 if (ps3_is_device(dev, 1, 2)) {
105 if (usage_hack.sb_12) {
111 result = lv1_close_device(dev->bus_id, dev->dev_id);
115 mutex_unlock(&usage_hack.mutex);
119 static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev)
123 mutex_lock(&usage_hack.mutex);
126 if (usage_hack.gpu > 1) {
131 result = lv1_gpu_open(0);
134 pr_debug("%s:%d: lv1_gpu_open failed: %s\n", __func__,
135 __LINE__, ps3_result(result));
140 mutex_unlock(&usage_hack.mutex);
144 static int ps3_close_hv_device_gpu(struct ps3_system_bus_device *dev)
148 mutex_lock(&usage_hack.mutex);
151 if (usage_hack.gpu) {
156 result = lv1_gpu_close();
160 mutex_unlock(&usage_hack.mutex);
164 int ps3_open_hv_device(struct ps3_system_bus_device *dev)
167 pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id);
169 switch (dev->match_id) {
170 case PS3_MATCH_ID_EHCI:
171 case PS3_MATCH_ID_OHCI:
172 case PS3_MATCH_ID_GELIC:
173 case PS3_MATCH_ID_STOR_DISK:
174 case PS3_MATCH_ID_STOR_ROM:
175 case PS3_MATCH_ID_STOR_FLASH:
176 return ps3_open_hv_device_sb(dev);
178 case PS3_MATCH_ID_SOUND:
179 case PS3_MATCH_ID_GPU:
180 return ps3_open_hv_device_gpu(dev);
182 case PS3_MATCH_ID_AV_SETTINGS:
183 case PS3_MATCH_ID_SYSTEM_MANAGER:
184 pr_debug("%s:%d: unsupported match_id: %u\n", __func__,
185 __LINE__, dev->match_id);
186 pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__,
195 pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__,
200 EXPORT_SYMBOL_GPL(ps3_open_hv_device);
202 int ps3_close_hv_device(struct ps3_system_bus_device *dev)
205 pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id);
207 switch (dev->match_id) {
208 case PS3_MATCH_ID_EHCI:
209 case PS3_MATCH_ID_OHCI:
210 case PS3_MATCH_ID_GELIC:
211 case PS3_MATCH_ID_STOR_DISK:
212 case PS3_MATCH_ID_STOR_ROM:
213 case PS3_MATCH_ID_STOR_FLASH:
214 return ps3_close_hv_device_sb(dev);
216 case PS3_MATCH_ID_SOUND:
217 case PS3_MATCH_ID_GPU:
218 return ps3_close_hv_device_gpu(dev);
220 case PS3_MATCH_ID_AV_SETTINGS:
221 case PS3_MATCH_ID_SYSTEM_MANAGER:
222 pr_debug("%s:%d: unsupported match_id: %u\n", __func__,
223 __LINE__, dev->match_id);
224 pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__,
233 pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__,
238 EXPORT_SYMBOL_GPL(ps3_close_hv_device);
240 #define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__)
241 static void _dump_mmio_region(const struct ps3_mmio_region* r,
242 const char* func, int line)
244 pr_debug("%s:%d: dev %llu:%llu\n", func, line, r->dev->bus_id,
246 pr_debug("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr);
247 pr_debug("%s:%d: len %lxh\n", func, line, r->len);
248 pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr);
251 static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r)
256 result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id,
257 r->bus_addr, r->len, r->page_size, &lpar_addr);
258 r->lpar_addr = lpar_addr;
261 pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n",
262 __func__, __LINE__, ps3_result(result));
270 static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r)
272 /* device specific; do nothing currently */
276 int ps3_mmio_region_create(struct ps3_mmio_region *r)
278 return r->mmio_ops->create(r);
280 EXPORT_SYMBOL_GPL(ps3_mmio_region_create);
282 static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r)
287 result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id,
291 pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n",
292 __func__, __LINE__, ps3_result(result));
298 static int ps3_ioc0_free_mmio_region(struct ps3_mmio_region *r)
300 /* device specific; do nothing currently */
305 int ps3_free_mmio_region(struct ps3_mmio_region *r)
307 return r->mmio_ops->free(r);
310 EXPORT_SYMBOL_GPL(ps3_free_mmio_region);
312 static const struct ps3_mmio_region_ops ps3_mmio_sb_region_ops = {
313 .create = ps3_sb_mmio_region_create,
314 .free = ps3_sb_free_mmio_region
317 static const struct ps3_mmio_region_ops ps3_mmio_ioc0_region_ops = {
318 .create = ps3_ioc0_mmio_region_create,
319 .free = ps3_ioc0_free_mmio_region
322 int ps3_mmio_region_init(struct ps3_system_bus_device *dev,
323 struct ps3_mmio_region *r, unsigned long bus_addr, unsigned long len,
324 enum ps3_mmio_page_size page_size)
327 r->bus_addr = bus_addr;
329 r->page_size = page_size;
330 switch (dev->dev_type) {
331 case PS3_DEVICE_TYPE_SB:
332 r->mmio_ops = &ps3_mmio_sb_region_ops;
334 case PS3_DEVICE_TYPE_IOC0:
335 r->mmio_ops = &ps3_mmio_ioc0_region_ops;
343 EXPORT_SYMBOL_GPL(ps3_mmio_region_init);
345 static int ps3_system_bus_match(struct device *_dev,
346 struct device_driver *_drv)
349 struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv);
350 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
352 if (!dev->match_sub_id)
353 result = dev->match_id == drv->match_id;
355 result = dev->match_sub_id == drv->match_sub_id &&
356 dev->match_id == drv->match_id;
359 pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n",
361 dev->match_id, dev->match_sub_id, dev_name(&dev->core),
362 drv->match_id, drv->match_sub_id, drv->core.name);
364 pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n",
366 dev->match_id, dev->match_sub_id, dev_name(&dev->core),
367 drv->match_id, drv->match_sub_id, drv->core.name);
372 static int ps3_system_bus_probe(struct device *_dev)
375 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
376 struct ps3_system_bus_driver *drv;
379 dev_dbg(_dev, "%s:%d\n", __func__, __LINE__);
381 drv = ps3_system_bus_dev_to_system_bus_drv(dev);
385 result = drv->probe(dev);
387 pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__,
388 dev_name(&dev->core));
390 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core));
394 static int ps3_system_bus_remove(struct device *_dev)
397 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
398 struct ps3_system_bus_driver *drv;
401 dev_dbg(_dev, "%s:%d\n", __func__, __LINE__);
403 drv = ps3_system_bus_dev_to_system_bus_drv(dev);
407 result = drv->remove(dev);
409 dev_dbg(&dev->core, "%s:%d %s: no remove method\n",
410 __func__, __LINE__, drv->core.name);
412 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core));
416 static void ps3_system_bus_shutdown(struct device *_dev)
418 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
419 struct ps3_system_bus_driver *drv;
423 dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__,
426 if (!dev->core.driver) {
427 dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__,
432 drv = ps3_system_bus_dev_to_system_bus_drv(dev);
436 dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__,
437 dev_name(&dev->core), drv->core.name);
441 else if (drv->remove) {
442 dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n",
443 __func__, __LINE__, drv->core.name);
446 dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n",
447 __func__, __LINE__, drv->core.name);
451 dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
454 static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env)
456 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
458 if (add_uevent_var(env, "MODALIAS=ps3:%d:%d", dev->match_id,
464 static ssize_t modalias_show(struct device *_dev, struct device_attribute *a,
467 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
468 int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id,
471 return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
474 static struct device_attribute ps3_system_bus_dev_attrs[] = {
479 struct bus_type ps3_system_bus_type = {
480 .name = "ps3_system_bus",
481 .match = ps3_system_bus_match,
482 .uevent = ps3_system_bus_uevent,
483 .probe = ps3_system_bus_probe,
484 .remove = ps3_system_bus_remove,
485 .shutdown = ps3_system_bus_shutdown,
486 .dev_attrs = ps3_system_bus_dev_attrs,
489 static int __init ps3_system_bus_init(void)
493 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
496 pr_debug(" -> %s:%d\n", __func__, __LINE__);
498 mutex_init(&usage_hack.mutex);
500 result = device_register(&ps3_system_bus);
503 result = bus_register(&ps3_system_bus_type);
506 pr_debug(" <- %s:%d\n", __func__, __LINE__);
510 core_initcall(ps3_system_bus_init);
512 /* Allocates a contiguous real buffer and creates mappings over it.
513 * Returns the virtual address of the buffer and sets dma_handle
514 * to the dma address (mapping) of the first page.
516 static void * ps3_alloc_coherent(struct device *_dev, size_t size,
517 dma_addr_t *dma_handle, gfp_t flag)
520 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
521 unsigned long virt_addr;
523 flag &= ~(__GFP_DMA | __GFP_HIGHMEM);
526 virt_addr = __get_free_pages(flag, get_order(size));
529 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__);
533 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle,
534 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
535 CBE_IOPTE_SO_RW | CBE_IOPTE_M);
538 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
539 __func__, __LINE__, result);
540 BUG_ON("check region type");
544 return (void*)virt_addr;
547 free_pages(virt_addr, get_order(size));
553 static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
554 dma_addr_t dma_handle)
556 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
558 ps3_dma_unmap(dev->d_region, dma_handle, size);
559 free_pages((unsigned long)vaddr, get_order(size));
562 /* Creates TCEs for a user provided buffer. The user buffer must be
563 * contiguous real kernel storage (not vmalloc). The address passed here
564 * comprises a page address and offset into that page. The dma_addr_t
565 * returned will point to the same byte within the page as was passed in.
568 static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page,
569 unsigned long offset, size_t size, enum dma_data_direction direction,
570 struct dma_attrs *attrs)
572 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
575 void *ptr = page_address(page) + offset;
577 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
579 CBE_IOPTE_PP_R | CBE_IOPTE_PP_W |
580 CBE_IOPTE_SO_RW | CBE_IOPTE_M);
583 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
584 __func__, __LINE__, result);
590 static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
591 unsigned long offset, size_t size,
592 enum dma_data_direction direction,
593 struct dma_attrs *attrs)
595 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
599 void *ptr = page_address(page) + offset;
601 iopte_flag = CBE_IOPTE_M;
603 case DMA_BIDIRECTIONAL:
604 iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW;
607 iopte_flag |= CBE_IOPTE_PP_R | CBE_IOPTE_SO_R;
609 case DMA_FROM_DEVICE:
610 iopte_flag |= CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW;
616 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
617 &bus_addr, iopte_flag);
620 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
621 __func__, __LINE__, result);
626 static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr,
627 size_t size, enum dma_data_direction direction, struct dma_attrs *attrs)
629 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
632 result = ps3_dma_unmap(dev->d_region, dma_addr, size);
635 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n",
636 __func__, __LINE__, result);
640 static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl,
641 int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
643 #if defined(CONFIG_PS3_DYNAMIC_DMA)
647 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
648 struct scatterlist *sg;
651 for_each_sg(sgl, sg, nents, i) {
652 int result = ps3_dma_map(dev->d_region, sg_phys(sg),
653 sg->length, &sg->dma_address, 0);
656 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
657 __func__, __LINE__, result);
661 sg->dma_length = sg->length;
668 static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg,
670 enum dma_data_direction direction,
671 struct dma_attrs *attrs)
677 static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg,
678 int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
680 #if defined(CONFIG_PS3_DYNAMIC_DMA)
685 static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg,
686 int nents, enum dma_data_direction direction,
687 struct dma_attrs *attrs)
692 static int ps3_dma_supported(struct device *_dev, u64 mask)
694 return mask >= DMA_BIT_MASK(32);
697 static struct dma_mapping_ops ps3_sb_dma_ops = {
698 .alloc_coherent = ps3_alloc_coherent,
699 .free_coherent = ps3_free_coherent,
700 .map_sg = ps3_sb_map_sg,
701 .unmap_sg = ps3_sb_unmap_sg,
702 .dma_supported = ps3_dma_supported,
703 .map_page = ps3_sb_map_page,
704 .unmap_page = ps3_unmap_page,
707 static struct dma_mapping_ops ps3_ioc0_dma_ops = {
708 .alloc_coherent = ps3_alloc_coherent,
709 .free_coherent = ps3_free_coherent,
710 .map_sg = ps3_ioc0_map_sg,
711 .unmap_sg = ps3_ioc0_unmap_sg,
712 .dma_supported = ps3_dma_supported,
713 .map_page = ps3_ioc0_map_page,
714 .unmap_page = ps3_unmap_page,
718 * ps3_system_bus_release_device - remove a device from the system bus
721 static void ps3_system_bus_release_device(struct device *_dev)
723 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
728 * ps3_system_bus_device_register - add a device to the system bus
730 * ps3_system_bus_device_register() expects the dev object to be allocated
731 * dynamically by the caller. The system bus takes ownership of the dev
732 * object and frees the object in ps3_system_bus_release_device().
735 int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
738 static unsigned int dev_ioc0_count;
739 static unsigned int dev_sb_count;
740 static unsigned int dev_vuart_count;
741 static unsigned int dev_lpm_count;
743 if (!dev->core.parent)
744 dev->core.parent = &ps3_system_bus;
745 dev->core.bus = &ps3_system_bus_type;
746 dev->core.release = ps3_system_bus_release_device;
748 switch (dev->dev_type) {
749 case PS3_DEVICE_TYPE_IOC0:
750 dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops;
751 dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count);
753 case PS3_DEVICE_TYPE_SB:
754 dev->core.archdata.dma_ops = &ps3_sb_dma_ops;
755 dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count);
758 case PS3_DEVICE_TYPE_VUART:
759 dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count);
761 case PS3_DEVICE_TYPE_LPM:
762 dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count);
768 dev->core.archdata.of_node = NULL;
769 set_dev_node(&dev->core, 0);
771 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core));
773 result = device_register(&dev->core);
777 EXPORT_SYMBOL_GPL(ps3_system_bus_device_register);
779 int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv)
783 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
785 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
788 drv->core.bus = &ps3_system_bus_type;
790 result = driver_register(&drv->core);
791 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
795 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register);
797 void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv)
799 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
800 driver_unregister(&drv->core);
801 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
804 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister);