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>
33 static struct device ps3_system_bus = {
34 .init_name = "ps3_system",
37 /* FIXME: need device usage counters! */
40 int sb_11; /* usb 0 */
41 int sb_12; /* usb 0 */
45 static int ps3_is_device(struct ps3_system_bus_device *dev, u64 bus_id,
48 return dev->bus_id == bus_id && dev->dev_id == dev_id;
51 static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev)
56 mutex_lock(&usage_hack.mutex);
58 if (ps3_is_device(dev, 1, 1)) {
60 if (usage_hack.sb_11 > 1) {
66 if (ps3_is_device(dev, 1, 2)) {
68 if (usage_hack.sb_12 > 1) {
74 result = lv1_open_device(dev->bus_id, dev->dev_id, 0);
77 pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__,
78 __LINE__, ps3_result(result));
83 mutex_unlock(&usage_hack.mutex);
87 static int ps3_close_hv_device_sb(struct ps3_system_bus_device *dev)
92 mutex_lock(&usage_hack.mutex);
94 if (ps3_is_device(dev, 1, 1)) {
96 if (usage_hack.sb_11) {
102 if (ps3_is_device(dev, 1, 2)) {
104 if (usage_hack.sb_12) {
110 result = lv1_close_device(dev->bus_id, dev->dev_id);
114 mutex_unlock(&usage_hack.mutex);
118 static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev)
122 mutex_lock(&usage_hack.mutex);
125 if (usage_hack.gpu > 1) {
130 result = lv1_gpu_open(0);
133 pr_debug("%s:%d: lv1_gpu_open failed: %s\n", __func__,
134 __LINE__, ps3_result(result));
139 mutex_unlock(&usage_hack.mutex);
143 static int ps3_close_hv_device_gpu(struct ps3_system_bus_device *dev)
147 mutex_lock(&usage_hack.mutex);
150 if (usage_hack.gpu) {
155 result = lv1_gpu_close();
159 mutex_unlock(&usage_hack.mutex);
163 int ps3_open_hv_device(struct ps3_system_bus_device *dev)
166 pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id);
168 switch (dev->match_id) {
169 case PS3_MATCH_ID_EHCI:
170 case PS3_MATCH_ID_OHCI:
171 case PS3_MATCH_ID_GELIC:
172 case PS3_MATCH_ID_STOR_DISK:
173 case PS3_MATCH_ID_STOR_ROM:
174 case PS3_MATCH_ID_STOR_FLASH:
175 return ps3_open_hv_device_sb(dev);
177 case PS3_MATCH_ID_SOUND:
178 case PS3_MATCH_ID_GPU:
179 return ps3_open_hv_device_gpu(dev);
181 case PS3_MATCH_ID_AV_SETTINGS:
182 case PS3_MATCH_ID_SYSTEM_MANAGER:
183 pr_debug("%s:%d: unsupported match_id: %u\n", __func__,
184 __LINE__, dev->match_id);
185 pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__,
194 pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__,
199 EXPORT_SYMBOL_GPL(ps3_open_hv_device);
201 int ps3_close_hv_device(struct ps3_system_bus_device *dev)
204 pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id);
206 switch (dev->match_id) {
207 case PS3_MATCH_ID_EHCI:
208 case PS3_MATCH_ID_OHCI:
209 case PS3_MATCH_ID_GELIC:
210 case PS3_MATCH_ID_STOR_DISK:
211 case PS3_MATCH_ID_STOR_ROM:
212 case PS3_MATCH_ID_STOR_FLASH:
213 return ps3_close_hv_device_sb(dev);
215 case PS3_MATCH_ID_SOUND:
216 case PS3_MATCH_ID_GPU:
217 return ps3_close_hv_device_gpu(dev);
219 case PS3_MATCH_ID_AV_SETTINGS:
220 case PS3_MATCH_ID_SYSTEM_MANAGER:
221 pr_debug("%s:%d: unsupported match_id: %u\n", __func__,
222 __LINE__, dev->match_id);
223 pr_debug("%s:%d: bus_id: %llu\n", __func__, __LINE__,
232 pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__,
237 EXPORT_SYMBOL_GPL(ps3_close_hv_device);
239 #define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__)
240 static void _dump_mmio_region(const struct ps3_mmio_region* r,
241 const char* func, int line)
243 pr_debug("%s:%d: dev %llu:%llu\n", func, line, r->dev->bus_id,
245 pr_debug("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr);
246 pr_debug("%s:%d: len %lxh\n", func, line, r->len);
247 pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr);
250 static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r)
255 result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id,
256 r->bus_addr, r->len, r->page_size, &lpar_addr);
257 r->lpar_addr = lpar_addr;
260 pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n",
261 __func__, __LINE__, ps3_result(result));
269 static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r)
271 /* device specific; do nothing currently */
275 int ps3_mmio_region_create(struct ps3_mmio_region *r)
277 return r->mmio_ops->create(r);
279 EXPORT_SYMBOL_GPL(ps3_mmio_region_create);
281 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 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id);
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 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id);
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 IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M);
537 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
538 __func__, __LINE__, result);
539 BUG_ON("check region type");
543 return (void*)virt_addr;
546 free_pages(virt_addr, get_order(size));
552 static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
553 dma_addr_t dma_handle)
555 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
557 ps3_dma_unmap(dev->d_region, dma_handle, size);
558 free_pages((unsigned long)vaddr, get_order(size));
561 /* Creates TCEs for a user provided buffer. The user buffer must be
562 * contiguous real kernel storage (not vmalloc). The address passed here
563 * comprises a page address and offset into that page. The dma_addr_t
564 * returned will point to the same byte within the page as was passed in.
567 static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page,
568 unsigned long offset, size_t size, enum dma_data_direction direction,
569 struct dma_attrs *attrs)
571 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
574 void *ptr = page_address(page) + offset;
576 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
578 IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M);
581 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
582 __func__, __LINE__, result);
588 static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
589 unsigned long offset, size_t size,
590 enum dma_data_direction direction,
591 struct dma_attrs *attrs)
593 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
597 void *ptr = page_address(page) + offset;
599 iopte_flag = IOPTE_M;
601 case DMA_BIDIRECTIONAL:
602 iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW;
605 iopte_flag |= IOPTE_PP_R | IOPTE_SO_R;
607 case DMA_FROM_DEVICE:
608 iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW;
614 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
615 &bus_addr, iopte_flag);
618 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
619 __func__, __LINE__, result);
624 static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr,
625 size_t size, enum dma_data_direction direction, struct dma_attrs *attrs)
627 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
630 result = ps3_dma_unmap(dev->d_region, dma_addr, size);
633 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n",
634 __func__, __LINE__, result);
638 static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl,
639 int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
641 #if defined(CONFIG_PS3_DYNAMIC_DMA)
645 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
646 struct scatterlist *sg;
649 for_each_sg(sgl, sg, nents, i) {
650 int result = ps3_dma_map(dev->d_region, sg_phys(sg),
651 sg->length, &sg->dma_address, 0);
654 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
655 __func__, __LINE__, result);
659 sg->dma_length = sg->length;
666 static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg,
668 enum dma_data_direction direction,
669 struct dma_attrs *attrs)
675 static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg,
676 int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
678 #if defined(CONFIG_PS3_DYNAMIC_DMA)
683 static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg,
684 int nents, enum dma_data_direction direction,
685 struct dma_attrs *attrs)
690 static int ps3_dma_supported(struct device *_dev, u64 mask)
692 return mask >= DMA_32BIT_MASK;
695 static struct dma_mapping_ops ps3_sb_dma_ops = {
696 .alloc_coherent = ps3_alloc_coherent,
697 .free_coherent = ps3_free_coherent,
698 .map_sg = ps3_sb_map_sg,
699 .unmap_sg = ps3_sb_unmap_sg,
700 .dma_supported = ps3_dma_supported,
701 .map_page = ps3_sb_map_page,
702 .unmap_page = ps3_unmap_page,
705 static struct dma_mapping_ops ps3_ioc0_dma_ops = {
706 .alloc_coherent = ps3_alloc_coherent,
707 .free_coherent = ps3_free_coherent,
708 .map_sg = ps3_ioc0_map_sg,
709 .unmap_sg = ps3_ioc0_unmap_sg,
710 .dma_supported = ps3_dma_supported,
711 .map_page = ps3_ioc0_map_page,
712 .unmap_page = ps3_unmap_page,
716 * ps3_system_bus_release_device - remove a device from the system bus
719 static void ps3_system_bus_release_device(struct device *_dev)
721 struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
726 * ps3_system_bus_device_register - add a device to the system bus
728 * ps3_system_bus_device_register() expects the dev object to be allocated
729 * dynamically by the caller. The system bus takes ownership of the dev
730 * object and frees the object in ps3_system_bus_release_device().
733 int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
736 static unsigned int dev_ioc0_count;
737 static unsigned int dev_sb_count;
738 static unsigned int dev_vuart_count;
739 static unsigned int dev_lpm_count;
741 if (!dev->core.parent)
742 dev->core.parent = &ps3_system_bus;
743 dev->core.bus = &ps3_system_bus_type;
744 dev->core.release = ps3_system_bus_release_device;
746 switch (dev->dev_type) {
747 case PS3_DEVICE_TYPE_IOC0:
748 dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops;
749 dev_set_name(&dev->core, "ioc0_%02x", ++dev_ioc0_count);
751 case PS3_DEVICE_TYPE_SB:
752 dev->core.archdata.dma_ops = &ps3_sb_dma_ops;
753 dev_set_name(&dev->core, "sb_%02x", ++dev_sb_count);
756 case PS3_DEVICE_TYPE_VUART:
757 dev_set_name(&dev->core, "vuart_%02x", ++dev_vuart_count);
759 case PS3_DEVICE_TYPE_LPM:
760 dev_set_name(&dev->core, "lpm_%02x", ++dev_lpm_count);
766 dev->core.archdata.of_node = NULL;
767 set_dev_node(&dev->core, 0);
769 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev_name(&dev->core));
771 result = device_register(&dev->core);
775 EXPORT_SYMBOL_GPL(ps3_system_bus_device_register);
777 int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv)
781 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
783 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
786 drv->core.bus = &ps3_system_bus_type;
788 result = driver_register(&drv->core);
789 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
793 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register);
795 void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv)
797 pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
798 driver_unregister(&drv->core);
799 pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
802 EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister);