Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 1 | /* |
| 2 | * ps3vram - Use extra PS3 video ram as MTD block device. |
| 3 | * |
| 4 | * Copyright 2009 Sony Corporation |
| 5 | * |
| 6 | * Based on the MTD ps3vram driver, which is |
| 7 | * Copyright (c) 2007-2008 Jim Paris <jim@jtan.com> |
| 8 | * Added support RSX DMA Vivien Chappelier <vivien.chappelier@free.fr> |
| 9 | */ |
| 10 | |
| 11 | #include <linux/blkdev.h> |
| 12 | #include <linux/delay.h> |
Paul Gortmaker | 0c8d44f | 2011-07-01 15:56:05 -0400 | [diff] [blame] | 13 | #include <linux/module.h> |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 14 | #include <linux/proc_fs.h> |
| 15 | #include <linux/seq_file.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 16 | #include <linux/slab.h> |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 17 | |
Geert Uytterhoeven | 9413c88 | 2009-07-29 02:06:42 +0000 | [diff] [blame] | 18 | #include <asm/cell-regs.h> |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 19 | #include <asm/firmware.h> |
| 20 | #include <asm/lv1call.h> |
| 21 | #include <asm/ps3.h> |
Geert Uytterhoeven | d3352c9 | 2009-06-10 04:38:48 +0000 | [diff] [blame] | 22 | #include <asm/ps3gpu.h> |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 23 | |
| 24 | |
| 25 | #define DEVICE_NAME "ps3vram" |
| 26 | |
| 27 | |
| 28 | #define XDR_BUF_SIZE (2 * 1024 * 1024) /* XDR buffer (must be 1MiB aligned) */ |
| 29 | #define XDR_IOIF 0x0c000000 |
| 30 | |
| 31 | #define FIFO_BASE XDR_IOIF |
| 32 | #define FIFO_SIZE (64 * 1024) |
| 33 | |
| 34 | #define DMA_PAGE_SIZE (4 * 1024) |
| 35 | |
| 36 | #define CACHE_PAGE_SIZE (256 * 1024) |
| 37 | #define CACHE_PAGE_COUNT ((XDR_BUF_SIZE - FIFO_SIZE) / CACHE_PAGE_SIZE) |
| 38 | |
| 39 | #define CACHE_OFFSET CACHE_PAGE_SIZE |
| 40 | #define FIFO_OFFSET 0 |
| 41 | |
| 42 | #define CTRL_PUT 0x10 |
| 43 | #define CTRL_GET 0x11 |
| 44 | #define CTRL_TOP 0x15 |
| 45 | |
| 46 | #define UPLOAD_SUBCH 1 |
| 47 | #define DOWNLOAD_SUBCH 2 |
| 48 | |
| 49 | #define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN 0x0000030c |
| 50 | #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY 0x00000104 |
| 51 | |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 52 | #define CACHE_PAGE_PRESENT 1 |
| 53 | #define CACHE_PAGE_DIRTY 2 |
| 54 | |
| 55 | struct ps3vram_tag { |
| 56 | unsigned int address; |
| 57 | unsigned int flags; |
| 58 | }; |
| 59 | |
| 60 | struct ps3vram_cache { |
| 61 | unsigned int page_count; |
| 62 | unsigned int page_size; |
| 63 | struct ps3vram_tag *tags; |
| 64 | unsigned int hit; |
| 65 | unsigned int miss; |
| 66 | }; |
| 67 | |
| 68 | struct ps3vram_priv { |
| 69 | struct request_queue *queue; |
| 70 | struct gendisk *gendisk; |
| 71 | |
| 72 | u64 size; |
| 73 | |
| 74 | u64 memory_handle; |
| 75 | u64 context_handle; |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 76 | u32 __iomem *ctrl; |
| 77 | void __iomem *reports; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 78 | u8 *xdr_buf; |
| 79 | |
| 80 | u32 *fifo_base; |
| 81 | u32 *fifo_ptr; |
| 82 | |
| 83 | struct ps3vram_cache cache; |
| 84 | |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 85 | spinlock_t lock; /* protecting list of bios */ |
| 86 | struct bio_list list; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 87 | }; |
| 88 | |
| 89 | |
| 90 | static int ps3vram_major; |
| 91 | |
| 92 | |
Alexey Dobriyan | 83d5cde | 2009-09-21 17:01:13 -0700 | [diff] [blame] | 93 | static const struct block_device_operations ps3vram_fops = { |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 94 | .owner = THIS_MODULE, |
| 95 | }; |
| 96 | |
| 97 | |
| 98 | #define DMA_NOTIFIER_HANDLE_BASE 0x66604200 /* first DMA notifier handle */ |
| 99 | #define DMA_NOTIFIER_OFFSET_BASE 0x1000 /* first DMA notifier offset */ |
| 100 | #define DMA_NOTIFIER_SIZE 0x40 |
| 101 | #define NOTIFIER 7 /* notifier used for completion report */ |
| 102 | |
| 103 | static char *size = "256M"; |
| 104 | module_param(size, charp, 0); |
| 105 | MODULE_PARM_DESC(size, "memory size"); |
| 106 | |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 107 | static u32 __iomem *ps3vram_get_notifier(void __iomem *reports, int notifier) |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 108 | { |
Geert Uytterhoeven | 1bd9784 | 2009-06-10 04:38:51 +0000 | [diff] [blame] | 109 | return reports + DMA_NOTIFIER_OFFSET_BASE + |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 110 | DMA_NOTIFIER_SIZE * notifier; |
| 111 | } |
| 112 | |
| 113 | static void ps3vram_notifier_reset(struct ps3_system_bus_device *dev) |
| 114 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 115 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 116 | u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 117 | int i; |
| 118 | |
| 119 | for (i = 0; i < 4; i++) |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 120 | iowrite32be(0xffffffff, notify + i); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | static int ps3vram_notifier_wait(struct ps3_system_bus_device *dev, |
| 124 | unsigned int timeout_ms) |
| 125 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 126 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 127 | u32 __iomem *notify = ps3vram_get_notifier(priv->reports, NOTIFIER); |
Hideyuki Sasaki | f21121c | 2009-11-04 09:09:28 +0100 | [diff] [blame] | 128 | unsigned long timeout; |
| 129 | |
| 130 | for (timeout = 20; timeout; timeout--) { |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 131 | if (!ioread32be(notify + 3)) |
Hideyuki Sasaki | f21121c | 2009-11-04 09:09:28 +0100 | [diff] [blame] | 132 | return 0; |
| 133 | udelay(10); |
| 134 | } |
| 135 | |
| 136 | timeout = jiffies + msecs_to_jiffies(timeout_ms); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 137 | |
| 138 | do { |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 139 | if (!ioread32be(notify + 3)) |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 140 | return 0; |
| 141 | msleep(1); |
| 142 | } while (time_before(jiffies, timeout)); |
| 143 | |
| 144 | return -ETIMEDOUT; |
| 145 | } |
| 146 | |
| 147 | static void ps3vram_init_ring(struct ps3_system_bus_device *dev) |
| 148 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 149 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 150 | |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 151 | iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); |
| 152 | iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_GET); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | static int ps3vram_wait_ring(struct ps3_system_bus_device *dev, |
| 156 | unsigned int timeout_ms) |
| 157 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 158 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 159 | unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); |
| 160 | |
| 161 | do { |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 162 | if (ioread32be(priv->ctrl + CTRL_PUT) == ioread32be(priv->ctrl + CTRL_GET)) |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 163 | return 0; |
| 164 | msleep(1); |
| 165 | } while (time_before(jiffies, timeout)); |
| 166 | |
| 167 | dev_warn(&dev->core, "FIFO timeout (%08x/%08x/%08x)\n", |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 168 | ioread32be(priv->ctrl + CTRL_PUT), ioread32be(priv->ctrl + CTRL_GET), |
| 169 | ioread32be(priv->ctrl + CTRL_TOP)); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 170 | |
| 171 | return -ETIMEDOUT; |
| 172 | } |
| 173 | |
| 174 | static void ps3vram_out_ring(struct ps3vram_priv *priv, u32 data) |
| 175 | { |
| 176 | *(priv->fifo_ptr)++ = data; |
| 177 | } |
| 178 | |
| 179 | static void ps3vram_begin_ring(struct ps3vram_priv *priv, u32 chan, u32 tag, |
| 180 | u32 size) |
| 181 | { |
| 182 | ps3vram_out_ring(priv, (size << 18) | (chan << 13) | tag); |
| 183 | } |
| 184 | |
| 185 | static void ps3vram_rewind_ring(struct ps3_system_bus_device *dev) |
| 186 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 187 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 188 | int status; |
| 189 | |
| 190 | ps3vram_out_ring(priv, 0x20000000 | (FIFO_BASE + FIFO_OFFSET)); |
| 191 | |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 192 | iowrite32be(FIFO_BASE + FIFO_OFFSET, priv->ctrl + CTRL_PUT); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 193 | |
| 194 | /* asking the HV for a blit will kick the FIFO */ |
Geert Uytterhoeven | d3352c9 | 2009-06-10 04:38:48 +0000 | [diff] [blame] | 195 | status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 196 | if (status) |
Geert Uytterhoeven | d3352c9 | 2009-06-10 04:38:48 +0000 | [diff] [blame] | 197 | dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n", |
| 198 | __func__, status); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 199 | |
| 200 | priv->fifo_ptr = priv->fifo_base; |
| 201 | } |
| 202 | |
| 203 | static void ps3vram_fire_ring(struct ps3_system_bus_device *dev) |
| 204 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 205 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 206 | int status; |
| 207 | |
| 208 | mutex_lock(&ps3_gpu_mutex); |
| 209 | |
Geoff Levand | e7bdd17 | 2015-06-10 18:00:17 +0000 | [diff] [blame^] | 210 | iowrite32be(FIFO_BASE + FIFO_OFFSET + (priv->fifo_ptr - priv->fifo_base) |
| 211 | * sizeof(u32), priv->ctrl + CTRL_PUT); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 212 | |
| 213 | /* asking the HV for a blit will kick the FIFO */ |
Geert Uytterhoeven | d3352c9 | 2009-06-10 04:38:48 +0000 | [diff] [blame] | 214 | status = lv1_gpu_fb_blit(priv->context_handle, 0, 0, 0, 0); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 215 | if (status) |
Geert Uytterhoeven | d3352c9 | 2009-06-10 04:38:48 +0000 | [diff] [blame] | 216 | dev_err(&dev->core, "%s: lv1_gpu_fb_blit failed %d\n", |
| 217 | __func__, status); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 218 | |
| 219 | if ((priv->fifo_ptr - priv->fifo_base) * sizeof(u32) > |
| 220 | FIFO_SIZE - 1024) { |
| 221 | dev_dbg(&dev->core, "FIFO full, rewinding\n"); |
| 222 | ps3vram_wait_ring(dev, 200); |
| 223 | ps3vram_rewind_ring(dev); |
| 224 | } |
| 225 | |
| 226 | mutex_unlock(&ps3_gpu_mutex); |
| 227 | } |
| 228 | |
| 229 | static void ps3vram_bind(struct ps3_system_bus_device *dev) |
| 230 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 231 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 232 | |
| 233 | ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0, 1); |
| 234 | ps3vram_out_ring(priv, 0x31337303); |
| 235 | ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x180, 3); |
| 236 | ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); |
| 237 | ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ |
| 238 | ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ |
| 239 | |
| 240 | ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0, 1); |
| 241 | ps3vram_out_ring(priv, 0x3137c0de); |
| 242 | ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x180, 3); |
| 243 | ps3vram_out_ring(priv, DMA_NOTIFIER_HANDLE_BASE + NOTIFIER); |
| 244 | ps3vram_out_ring(priv, 0xfeed0000); /* DMA video RAM instance */ |
| 245 | ps3vram_out_ring(priv, 0xfeed0001); /* DMA system RAM instance */ |
| 246 | |
| 247 | ps3vram_fire_ring(dev); |
| 248 | } |
| 249 | |
| 250 | static int ps3vram_upload(struct ps3_system_bus_device *dev, |
| 251 | unsigned int src_offset, unsigned int dst_offset, |
| 252 | int len, int count) |
| 253 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 254 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 255 | |
| 256 | ps3vram_begin_ring(priv, UPLOAD_SUBCH, |
| 257 | NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); |
| 258 | ps3vram_out_ring(priv, XDR_IOIF + src_offset); |
| 259 | ps3vram_out_ring(priv, dst_offset); |
| 260 | ps3vram_out_ring(priv, len); |
| 261 | ps3vram_out_ring(priv, len); |
| 262 | ps3vram_out_ring(priv, len); |
| 263 | ps3vram_out_ring(priv, count); |
| 264 | ps3vram_out_ring(priv, (1 << 8) | 1); |
| 265 | ps3vram_out_ring(priv, 0); |
| 266 | |
| 267 | ps3vram_notifier_reset(dev); |
| 268 | ps3vram_begin_ring(priv, UPLOAD_SUBCH, |
| 269 | NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); |
| 270 | ps3vram_out_ring(priv, 0); |
| 271 | ps3vram_begin_ring(priv, UPLOAD_SUBCH, 0x100, 1); |
| 272 | ps3vram_out_ring(priv, 0); |
| 273 | ps3vram_fire_ring(dev); |
| 274 | if (ps3vram_notifier_wait(dev, 200) < 0) { |
| 275 | dev_warn(&dev->core, "%s: Notifier timeout\n", __func__); |
| 276 | return -1; |
| 277 | } |
| 278 | |
| 279 | return 0; |
| 280 | } |
| 281 | |
| 282 | static int ps3vram_download(struct ps3_system_bus_device *dev, |
| 283 | unsigned int src_offset, unsigned int dst_offset, |
| 284 | int len, int count) |
| 285 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 286 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 287 | |
| 288 | ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, |
| 289 | NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); |
| 290 | ps3vram_out_ring(priv, src_offset); |
| 291 | ps3vram_out_ring(priv, XDR_IOIF + dst_offset); |
| 292 | ps3vram_out_ring(priv, len); |
| 293 | ps3vram_out_ring(priv, len); |
| 294 | ps3vram_out_ring(priv, len); |
| 295 | ps3vram_out_ring(priv, count); |
| 296 | ps3vram_out_ring(priv, (1 << 8) | 1); |
| 297 | ps3vram_out_ring(priv, 0); |
| 298 | |
| 299 | ps3vram_notifier_reset(dev); |
| 300 | ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, |
| 301 | NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1); |
| 302 | ps3vram_out_ring(priv, 0); |
| 303 | ps3vram_begin_ring(priv, DOWNLOAD_SUBCH, 0x100, 1); |
| 304 | ps3vram_out_ring(priv, 0); |
| 305 | ps3vram_fire_ring(dev); |
| 306 | if (ps3vram_notifier_wait(dev, 200) < 0) { |
| 307 | dev_warn(&dev->core, "%s: Notifier timeout\n", __func__); |
| 308 | return -1; |
| 309 | } |
| 310 | |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | static void ps3vram_cache_evict(struct ps3_system_bus_device *dev, int entry) |
| 315 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 316 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 317 | struct ps3vram_cache *cache = &priv->cache; |
| 318 | |
| 319 | if (!(cache->tags[entry].flags & CACHE_PAGE_DIRTY)) |
| 320 | return; |
| 321 | |
| 322 | dev_dbg(&dev->core, "Flushing %d: 0x%08x\n", entry, |
| 323 | cache->tags[entry].address); |
| 324 | if (ps3vram_upload(dev, CACHE_OFFSET + entry * cache->page_size, |
| 325 | cache->tags[entry].address, DMA_PAGE_SIZE, |
| 326 | cache->page_size / DMA_PAGE_SIZE) < 0) { |
| 327 | dev_err(&dev->core, |
| 328 | "Failed to upload from 0x%x to " "0x%x size 0x%x\n", |
| 329 | entry * cache->page_size, cache->tags[entry].address, |
| 330 | cache->page_size); |
| 331 | } |
| 332 | cache->tags[entry].flags &= ~CACHE_PAGE_DIRTY; |
| 333 | } |
| 334 | |
| 335 | static void ps3vram_cache_load(struct ps3_system_bus_device *dev, int entry, |
| 336 | unsigned int address) |
| 337 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 338 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 339 | struct ps3vram_cache *cache = &priv->cache; |
| 340 | |
| 341 | dev_dbg(&dev->core, "Fetching %d: 0x%08x\n", entry, address); |
| 342 | if (ps3vram_download(dev, address, |
| 343 | CACHE_OFFSET + entry * cache->page_size, |
| 344 | DMA_PAGE_SIZE, |
| 345 | cache->page_size / DMA_PAGE_SIZE) < 0) { |
| 346 | dev_err(&dev->core, |
| 347 | "Failed to download from 0x%x to 0x%x size 0x%x\n", |
| 348 | address, entry * cache->page_size, cache->page_size); |
| 349 | } |
| 350 | |
| 351 | cache->tags[entry].address = address; |
| 352 | cache->tags[entry].flags |= CACHE_PAGE_PRESENT; |
| 353 | } |
| 354 | |
| 355 | |
| 356 | static void ps3vram_cache_flush(struct ps3_system_bus_device *dev) |
| 357 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 358 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 359 | struct ps3vram_cache *cache = &priv->cache; |
| 360 | int i; |
| 361 | |
| 362 | dev_dbg(&dev->core, "FLUSH\n"); |
| 363 | for (i = 0; i < cache->page_count; i++) { |
| 364 | ps3vram_cache_evict(dev, i); |
| 365 | cache->tags[i].flags = 0; |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | static unsigned int ps3vram_cache_match(struct ps3_system_bus_device *dev, |
| 370 | loff_t address) |
| 371 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 372 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 373 | struct ps3vram_cache *cache = &priv->cache; |
| 374 | unsigned int base; |
| 375 | unsigned int offset; |
| 376 | int i; |
| 377 | static int counter; |
| 378 | |
| 379 | offset = (unsigned int) (address & (cache->page_size - 1)); |
| 380 | base = (unsigned int) (address - offset); |
| 381 | |
| 382 | /* fully associative check */ |
| 383 | for (i = 0; i < cache->page_count; i++) { |
| 384 | if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) && |
| 385 | cache->tags[i].address == base) { |
| 386 | cache->hit++; |
| 387 | dev_dbg(&dev->core, "Found entry %d: 0x%08x\n", i, |
| 388 | cache->tags[i].address); |
| 389 | return i; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | /* choose a random entry */ |
| 394 | i = (jiffies + (counter++)) % cache->page_count; |
| 395 | dev_dbg(&dev->core, "Using entry %d\n", i); |
| 396 | |
| 397 | ps3vram_cache_evict(dev, i); |
| 398 | ps3vram_cache_load(dev, i, base); |
| 399 | |
| 400 | cache->miss++; |
| 401 | return i; |
| 402 | } |
| 403 | |
| 404 | static int ps3vram_cache_init(struct ps3_system_bus_device *dev) |
| 405 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 406 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 407 | |
| 408 | priv->cache.page_count = CACHE_PAGE_COUNT; |
| 409 | priv->cache.page_size = CACHE_PAGE_SIZE; |
| 410 | priv->cache.tags = kzalloc(sizeof(struct ps3vram_tag) * |
| 411 | CACHE_PAGE_COUNT, GFP_KERNEL); |
| 412 | if (priv->cache.tags == NULL) { |
| 413 | dev_err(&dev->core, "Could not allocate cache tags\n"); |
| 414 | return -ENOMEM; |
| 415 | } |
| 416 | |
| 417 | dev_info(&dev->core, "Created ram cache: %d entries, %d KiB each\n", |
| 418 | CACHE_PAGE_COUNT, CACHE_PAGE_SIZE / 1024); |
| 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | static void ps3vram_cache_cleanup(struct ps3_system_bus_device *dev) |
| 424 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 425 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 426 | |
| 427 | ps3vram_cache_flush(dev); |
| 428 | kfree(priv->cache.tags); |
| 429 | } |
| 430 | |
| 431 | static int ps3vram_read(struct ps3_system_bus_device *dev, loff_t from, |
| 432 | size_t len, size_t *retlen, u_char *buf) |
| 433 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 434 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 435 | unsigned int cached, count; |
| 436 | |
| 437 | dev_dbg(&dev->core, "%s: from=0x%08x len=0x%zx\n", __func__, |
| 438 | (unsigned int)from, len); |
| 439 | |
| 440 | if (from >= priv->size) |
| 441 | return -EIO; |
| 442 | |
| 443 | if (len > priv->size - from) |
| 444 | len = priv->size - from; |
| 445 | |
| 446 | /* Copy from vram to buf */ |
| 447 | count = len; |
| 448 | while (count) { |
| 449 | unsigned int offset, avail; |
| 450 | unsigned int entry; |
| 451 | |
| 452 | offset = (unsigned int) (from & (priv->cache.page_size - 1)); |
| 453 | avail = priv->cache.page_size - offset; |
| 454 | |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 455 | entry = ps3vram_cache_match(dev, from); |
| 456 | cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; |
| 457 | |
| 458 | dev_dbg(&dev->core, "%s: from=%08x cached=%08x offset=%08x " |
| 459 | "avail=%08x count=%08x\n", __func__, |
| 460 | (unsigned int)from, cached, offset, avail, count); |
| 461 | |
| 462 | if (avail > count) |
| 463 | avail = count; |
| 464 | memcpy(buf, priv->xdr_buf + cached, avail); |
| 465 | |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 466 | buf += avail; |
| 467 | count -= avail; |
| 468 | from += avail; |
| 469 | } |
| 470 | |
| 471 | *retlen = len; |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | static int ps3vram_write(struct ps3_system_bus_device *dev, loff_t to, |
| 476 | size_t len, size_t *retlen, const u_char *buf) |
| 477 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 478 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 479 | unsigned int cached, count; |
| 480 | |
| 481 | if (to >= priv->size) |
| 482 | return -EIO; |
| 483 | |
| 484 | if (len > priv->size - to) |
| 485 | len = priv->size - to; |
| 486 | |
| 487 | /* Copy from buf to vram */ |
| 488 | count = len; |
| 489 | while (count) { |
| 490 | unsigned int offset, avail; |
| 491 | unsigned int entry; |
| 492 | |
| 493 | offset = (unsigned int) (to & (priv->cache.page_size - 1)); |
| 494 | avail = priv->cache.page_size - offset; |
| 495 | |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 496 | entry = ps3vram_cache_match(dev, to); |
| 497 | cached = CACHE_OFFSET + entry * priv->cache.page_size + offset; |
| 498 | |
| 499 | dev_dbg(&dev->core, "%s: to=%08x cached=%08x offset=%08x " |
| 500 | "avail=%08x count=%08x\n", __func__, (unsigned int)to, |
| 501 | cached, offset, avail, count); |
| 502 | |
| 503 | if (avail > count) |
| 504 | avail = count; |
| 505 | memcpy(priv->xdr_buf + cached, buf, avail); |
| 506 | |
| 507 | priv->cache.tags[entry].flags |= CACHE_PAGE_DIRTY; |
| 508 | |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 509 | buf += avail; |
| 510 | count -= avail; |
| 511 | to += avail; |
| 512 | } |
| 513 | |
| 514 | *retlen = len; |
| 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | static int ps3vram_proc_show(struct seq_file *m, void *v) |
| 519 | { |
| 520 | struct ps3vram_priv *priv = m->private; |
| 521 | |
| 522 | seq_printf(m, "hit:%u\nmiss:%u\n", priv->cache.hit, priv->cache.miss); |
| 523 | return 0; |
| 524 | } |
| 525 | |
| 526 | static int ps3vram_proc_open(struct inode *inode, struct file *file) |
| 527 | { |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 528 | return single_open(file, ps3vram_proc_show, PDE_DATA(inode)); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 529 | } |
| 530 | |
| 531 | static const struct file_operations ps3vram_proc_fops = { |
| 532 | .owner = THIS_MODULE, |
| 533 | .open = ps3vram_proc_open, |
| 534 | .read = seq_read, |
| 535 | .llseek = seq_lseek, |
| 536 | .release = single_release, |
| 537 | }; |
| 538 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 539 | static void ps3vram_proc_init(struct ps3_system_bus_device *dev) |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 540 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 541 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 542 | struct proc_dir_entry *pde; |
| 543 | |
Geert Uytterhoeven | 3c20e2f | 2009-06-10 04:38:38 +0000 | [diff] [blame] | 544 | pde = proc_create_data(DEVICE_NAME, 0444, NULL, &ps3vram_proc_fops, |
| 545 | priv); |
| 546 | if (!pde) |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 547 | dev_warn(&dev->core, "failed to create /proc entry\n"); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 548 | } |
| 549 | |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 550 | static struct bio *ps3vram_do_bio(struct ps3_system_bus_device *dev, |
| 551 | struct bio *bio) |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 552 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 553 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 554 | int write = bio_data_dir(bio) == WRITE; |
| 555 | const char *op = write ? "write" : "read"; |
Kent Overstreet | 4f024f3 | 2013-10-11 15:44:27 -0700 | [diff] [blame] | 556 | loff_t offset = bio->bi_iter.bi_sector << 9; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 557 | int error = 0; |
Kent Overstreet | 7988613 | 2013-11-23 17:19:00 -0800 | [diff] [blame] | 558 | struct bio_vec bvec; |
| 559 | struct bvec_iter iter; |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 560 | struct bio *next; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 561 | |
Kent Overstreet | 7988613 | 2013-11-23 17:19:00 -0800 | [diff] [blame] | 562 | bio_for_each_segment(bvec, bio, iter) { |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 563 | /* PS3 is ppc64, so we don't handle highmem */ |
Kent Overstreet | 7988613 | 2013-11-23 17:19:00 -0800 | [diff] [blame] | 564 | char *ptr = page_address(bvec.bv_page) + bvec.bv_offset; |
| 565 | size_t len = bvec.bv_len, retlen; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 566 | |
| 567 | dev_dbg(&dev->core, " %s %zu bytes at offset %llu\n", op, |
| 568 | len, offset); |
| 569 | if (write) |
| 570 | error = ps3vram_write(dev, offset, len, &retlen, ptr); |
| 571 | else |
| 572 | error = ps3vram_read(dev, offset, len, &retlen, ptr); |
| 573 | |
| 574 | if (error) { |
| 575 | dev_err(&dev->core, "%s failed\n", op); |
| 576 | goto out; |
| 577 | } |
| 578 | |
| 579 | if (retlen != len) { |
| 580 | dev_err(&dev->core, "Short %s\n", op); |
Geert Uytterhoeven | 734957c8 | 2009-06-10 04:38:37 +0000 | [diff] [blame] | 581 | error = -EIO; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 582 | goto out; |
| 583 | } |
| 584 | |
| 585 | offset += len; |
| 586 | } |
| 587 | |
| 588 | dev_dbg(&dev->core, "%s completed\n", op); |
| 589 | |
| 590 | out: |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 591 | spin_lock_irq(&priv->lock); |
| 592 | bio_list_pop(&priv->list); |
| 593 | next = bio_list_peek(&priv->list); |
| 594 | spin_unlock_irq(&priv->lock); |
| 595 | |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 596 | bio_endio(bio, error); |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 597 | return next; |
| 598 | } |
| 599 | |
Christoph Hellwig | 5a7bbad | 2011-09-12 12:12:01 +0200 | [diff] [blame] | 600 | static void ps3vram_make_request(struct request_queue *q, struct bio *bio) |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 601 | { |
| 602 | struct ps3_system_bus_device *dev = q->queuedata; |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 603 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 604 | int busy; |
| 605 | |
| 606 | dev_dbg(&dev->core, "%s\n", __func__); |
| 607 | |
| 608 | spin_lock_irq(&priv->lock); |
| 609 | busy = !bio_list_empty(&priv->list); |
| 610 | bio_list_add(&priv->list, bio); |
| 611 | spin_unlock_irq(&priv->lock); |
| 612 | |
| 613 | if (busy) |
Christoph Hellwig | 5a7bbad | 2011-09-12 12:12:01 +0200 | [diff] [blame] | 614 | return; |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 615 | |
| 616 | do { |
| 617 | bio = ps3vram_do_bio(dev, bio); |
| 618 | } while (bio); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 619 | } |
| 620 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 621 | static int ps3vram_probe(struct ps3_system_bus_device *dev) |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 622 | { |
| 623 | struct ps3vram_priv *priv; |
| 624 | int error, status; |
| 625 | struct request_queue *queue; |
| 626 | struct gendisk *gendisk; |
Geert Uytterhoeven | 56ac72d | 2009-06-10 04:38:47 +0000 | [diff] [blame] | 627 | u64 ddr_size, ddr_lpar, ctrl_lpar, info_lpar, reports_lpar, |
| 628 | reports_size, xdr_lpar; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 629 | char *rest; |
| 630 | |
| 631 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 632 | if (!priv) { |
| 633 | error = -ENOMEM; |
| 634 | goto fail; |
| 635 | } |
| 636 | |
Geert Uytterhoeven | fb89e89 | 2009-06-10 04:38:41 +0000 | [diff] [blame] | 637 | spin_lock_init(&priv->lock); |
| 638 | bio_list_init(&priv->list); |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 639 | ps3_system_bus_set_drvdata(dev, priv); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 640 | |
| 641 | /* Allocate XDR buffer (1MiB aligned) */ |
| 642 | priv->xdr_buf = (void *)__get_free_pages(GFP_KERNEL, |
| 643 | get_order(XDR_BUF_SIZE)); |
| 644 | if (priv->xdr_buf == NULL) { |
| 645 | dev_err(&dev->core, "Could not allocate XDR buffer\n"); |
| 646 | error = -ENOMEM; |
| 647 | goto fail_free_priv; |
| 648 | } |
| 649 | |
| 650 | /* Put FIFO at begginning of XDR buffer */ |
| 651 | priv->fifo_base = (u32 *) (priv->xdr_buf + FIFO_OFFSET); |
| 652 | priv->fifo_ptr = priv->fifo_base; |
| 653 | |
| 654 | /* XXX: Need to open GPU, in case ps3fb or snd_ps3 aren't loaded */ |
| 655 | if (ps3_open_hv_device(dev)) { |
| 656 | dev_err(&dev->core, "ps3_open_hv_device failed\n"); |
| 657 | error = -EAGAIN; |
Jim Paris | 3273d87 | 2009-06-10 04:38:39 +0000 | [diff] [blame] | 658 | goto out_free_xdr_buf; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 659 | } |
| 660 | |
| 661 | /* Request memory */ |
| 662 | status = -1; |
| 663 | ddr_size = ALIGN(memparse(size, &rest), 1024*1024); |
| 664 | if (!ddr_size) { |
| 665 | dev_err(&dev->core, "Specified size is too small\n"); |
| 666 | error = -EINVAL; |
| 667 | goto out_close_gpu; |
| 668 | } |
| 669 | |
| 670 | while (ddr_size > 0) { |
| 671 | status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0, |
| 672 | &priv->memory_handle, |
| 673 | &ddr_lpar); |
| 674 | if (!status) |
| 675 | break; |
| 676 | ddr_size -= 1024*1024; |
| 677 | } |
| 678 | if (status) { |
| 679 | dev_err(&dev->core, "lv1_gpu_memory_allocate failed %d\n", |
| 680 | status); |
| 681 | error = -ENOMEM; |
Jim Paris | 3273d87 | 2009-06-10 04:38:39 +0000 | [diff] [blame] | 682 | goto out_close_gpu; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 683 | } |
| 684 | |
| 685 | /* Request context */ |
| 686 | status = lv1_gpu_context_allocate(priv->memory_handle, 0, |
| 687 | &priv->context_handle, &ctrl_lpar, |
| 688 | &info_lpar, &reports_lpar, |
| 689 | &reports_size); |
| 690 | if (status) { |
| 691 | dev_err(&dev->core, "lv1_gpu_context_allocate failed %d\n", |
| 692 | status); |
| 693 | error = -ENOMEM; |
| 694 | goto out_free_memory; |
| 695 | } |
| 696 | |
| 697 | /* Map XDR buffer to RSX */ |
Geert Uytterhoeven | 56ac72d | 2009-06-10 04:38:47 +0000 | [diff] [blame] | 698 | xdr_lpar = ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 699 | status = lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, |
Geert Uytterhoeven | 56ac72d | 2009-06-10 04:38:47 +0000 | [diff] [blame] | 700 | xdr_lpar, XDR_BUF_SIZE, |
| 701 | CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | |
| 702 | CBE_IOPTE_M); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 703 | if (status) { |
| 704 | dev_err(&dev->core, "lv1_gpu_context_iomap failed %d\n", |
| 705 | status); |
| 706 | error = -ENOMEM; |
| 707 | goto out_free_context; |
| 708 | } |
| 709 | |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 710 | priv->ctrl = ioremap(ctrl_lpar, 64 * 1024); |
| 711 | if (!priv->ctrl) { |
| 712 | dev_err(&dev->core, "ioremap CTRL failed\n"); |
| 713 | error = -ENOMEM; |
Geert Uytterhoeven | c3b94fd | 2009-06-10 04:38:50 +0000 | [diff] [blame] | 714 | goto out_unmap_context; |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | priv->reports = ioremap(reports_lpar, reports_size); |
| 718 | if (!priv->reports) { |
| 719 | dev_err(&dev->core, "ioremap REPORTS failed\n"); |
| 720 | error = -ENOMEM; |
| 721 | goto out_unmap_ctrl; |
| 722 | } |
| 723 | |
| 724 | mutex_lock(&ps3_gpu_mutex); |
| 725 | ps3vram_init_ring(dev); |
| 726 | mutex_unlock(&ps3_gpu_mutex); |
| 727 | |
| 728 | priv->size = ddr_size; |
| 729 | |
| 730 | ps3vram_bind(dev); |
| 731 | |
| 732 | mutex_lock(&ps3_gpu_mutex); |
| 733 | error = ps3vram_wait_ring(dev, 100); |
| 734 | mutex_unlock(&ps3_gpu_mutex); |
| 735 | if (error < 0) { |
| 736 | dev_err(&dev->core, "Failed to initialize channels\n"); |
| 737 | error = -ETIMEDOUT; |
| 738 | goto out_unmap_reports; |
| 739 | } |
| 740 | |
| 741 | ps3vram_cache_init(dev); |
| 742 | ps3vram_proc_init(dev); |
| 743 | |
| 744 | queue = blk_alloc_queue(GFP_KERNEL); |
| 745 | if (!queue) { |
| 746 | dev_err(&dev->core, "blk_alloc_queue failed\n"); |
| 747 | error = -ENOMEM; |
| 748 | goto out_cache_cleanup; |
| 749 | } |
| 750 | |
| 751 | priv->queue = queue; |
| 752 | queue->queuedata = dev; |
| 753 | blk_queue_make_request(queue, ps3vram_make_request); |
Stephen Rothwell | 91f63d0 | 2010-03-01 19:21:01 +1100 | [diff] [blame] | 754 | blk_queue_max_segments(queue, BLK_MAX_SEGMENTS); |
Martin K. Petersen | eb28d31 | 2010-02-26 00:20:37 -0500 | [diff] [blame] | 755 | blk_queue_max_segment_size(queue, BLK_MAX_SEGMENT_SIZE); |
Martin K. Petersen | 086fa5f | 2010-02-26 00:20:38 -0500 | [diff] [blame] | 756 | blk_queue_max_hw_sectors(queue, BLK_SAFE_MAX_SECTORS); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 757 | |
| 758 | gendisk = alloc_disk(1); |
| 759 | if (!gendisk) { |
| 760 | dev_err(&dev->core, "alloc_disk failed\n"); |
| 761 | error = -ENOMEM; |
| 762 | goto fail_cleanup_queue; |
| 763 | } |
| 764 | |
| 765 | priv->gendisk = gendisk; |
| 766 | gendisk->major = ps3vram_major; |
| 767 | gendisk->first_minor = 0; |
| 768 | gendisk->fops = &ps3vram_fops; |
| 769 | gendisk->queue = queue; |
| 770 | gendisk->private_data = dev; |
| 771 | gendisk->driverfs_dev = &dev->core; |
| 772 | strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name)); |
| 773 | set_capacity(gendisk, priv->size >> 9); |
| 774 | |
| 775 | dev_info(&dev->core, "%s: Using %lu MiB of GPU memory\n", |
| 776 | gendisk->disk_name, get_capacity(gendisk) >> 11); |
| 777 | |
| 778 | add_disk(gendisk); |
| 779 | return 0; |
| 780 | |
| 781 | fail_cleanup_queue: |
| 782 | blk_cleanup_queue(queue); |
| 783 | out_cache_cleanup: |
| 784 | remove_proc_entry(DEVICE_NAME, NULL); |
| 785 | ps3vram_cache_cleanup(dev); |
| 786 | out_unmap_reports: |
| 787 | iounmap(priv->reports); |
| 788 | out_unmap_ctrl: |
| 789 | iounmap(priv->ctrl); |
Geert Uytterhoeven | 56ac72d | 2009-06-10 04:38:47 +0000 | [diff] [blame] | 790 | out_unmap_context: |
| 791 | lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, xdr_lpar, |
| 792 | XDR_BUF_SIZE, CBE_IOPTE_M); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 793 | out_free_context: |
| 794 | lv1_gpu_context_free(priv->context_handle); |
| 795 | out_free_memory: |
| 796 | lv1_gpu_memory_free(priv->memory_handle); |
| 797 | out_close_gpu: |
| 798 | ps3_close_hv_device(dev); |
| 799 | out_free_xdr_buf: |
| 800 | free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); |
| 801 | fail_free_priv: |
| 802 | kfree(priv); |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 803 | ps3_system_bus_set_drvdata(dev, NULL); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 804 | fail: |
| 805 | return error; |
| 806 | } |
| 807 | |
| 808 | static int ps3vram_remove(struct ps3_system_bus_device *dev) |
| 809 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 810 | struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 811 | |
| 812 | del_gendisk(priv->gendisk); |
| 813 | put_disk(priv->gendisk); |
| 814 | blk_cleanup_queue(priv->queue); |
| 815 | remove_proc_entry(DEVICE_NAME, NULL); |
| 816 | ps3vram_cache_cleanup(dev); |
| 817 | iounmap(priv->reports); |
| 818 | iounmap(priv->ctrl); |
Geert Uytterhoeven | 56ac72d | 2009-06-10 04:38:47 +0000 | [diff] [blame] | 819 | lv1_gpu_context_iomap(priv->context_handle, XDR_IOIF, |
| 820 | ps3_mm_phys_to_lpar(__pa(priv->xdr_buf)), |
| 821 | XDR_BUF_SIZE, CBE_IOPTE_M); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 822 | lv1_gpu_context_free(priv->context_handle); |
| 823 | lv1_gpu_memory_free(priv->memory_handle); |
| 824 | ps3_close_hv_device(dev); |
| 825 | free_pages((unsigned long) priv->xdr_buf, get_order(XDR_BUF_SIZE)); |
| 826 | kfree(priv); |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 827 | ps3_system_bus_set_drvdata(dev, NULL); |
Geert Uytterhoeven | f507cd2 | 2009-03-06 02:54:09 +0000 | [diff] [blame] | 828 | return 0; |
| 829 | } |
| 830 | |
| 831 | static struct ps3_system_bus_driver ps3vram = { |
| 832 | .match_id = PS3_MATCH_ID_GPU, |
| 833 | .match_sub_id = PS3_MATCH_SUB_ID_GPU_RAMDISK, |
| 834 | .core.name = DEVICE_NAME, |
| 835 | .core.owner = THIS_MODULE, |
| 836 | .probe = ps3vram_probe, |
| 837 | .remove = ps3vram_remove, |
| 838 | .shutdown = ps3vram_remove, |
| 839 | }; |
| 840 | |
| 841 | |
| 842 | static int __init ps3vram_init(void) |
| 843 | { |
| 844 | int error; |
| 845 | |
| 846 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) |
| 847 | return -ENODEV; |
| 848 | |
| 849 | error = register_blkdev(0, DEVICE_NAME); |
| 850 | if (error <= 0) { |
| 851 | pr_err("%s: register_blkdev failed %d\n", DEVICE_NAME, error); |
| 852 | return error; |
| 853 | } |
| 854 | ps3vram_major = error; |
| 855 | |
| 856 | pr_info("%s: registered block device major %d\n", DEVICE_NAME, |
| 857 | ps3vram_major); |
| 858 | |
| 859 | error = ps3_system_bus_driver_register(&ps3vram); |
| 860 | if (error) |
| 861 | unregister_blkdev(ps3vram_major, DEVICE_NAME); |
| 862 | |
| 863 | return error; |
| 864 | } |
| 865 | |
| 866 | static void __exit ps3vram_exit(void) |
| 867 | { |
| 868 | ps3_system_bus_driver_unregister(&ps3vram); |
| 869 | unregister_blkdev(ps3vram_major, DEVICE_NAME); |
| 870 | } |
| 871 | |
| 872 | module_init(ps3vram_init); |
| 873 | module_exit(ps3vram_exit); |
| 874 | |
| 875 | MODULE_LICENSE("GPL"); |
| 876 | MODULE_DESCRIPTION("PS3 Video RAM Storage Driver"); |
| 877 | MODULE_AUTHOR("Sony Corporation"); |
| 878 | MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_RAMDISK); |