Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/net/wireless/libertas/if_sdio.c |
| 3 | * |
Pierre Ossman | ad3868b | 2008-06-28 12:52:45 +0200 | [diff] [blame] | 4 | * Copyright 2007-2008 Pierre Ossman |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 5 | * |
| 6 | * Inspired by if_cs.c, Copyright 2007 Holger Schurig |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or (at |
| 11 | * your option) any later version. |
| 12 | * |
| 13 | * This hardware has more or less no CMD53 support, so all registers |
| 14 | * must be accessed using sdio_readb()/sdio_writeb(). |
| 15 | * |
| 16 | * Transfers must be in one transaction or the firmware goes bonkers. |
| 17 | * This means that the transfer must either be small enough to do a |
| 18 | * byte based transfer or it must be padded to a multiple of the |
| 19 | * current block size. |
| 20 | * |
| 21 | * As SDIO is still new to the kernel, it is unfortunately common with |
David Woodhouse | 7e22627 | 2007-12-14 22:53:41 -0500 | [diff] [blame] | 22 | * bugs in the host controllers related to that. One such bug is that |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 23 | * controllers cannot do transfers that aren't a multiple of 4 bytes. |
| 24 | * If you don't have time to fix the host controller driver, you can |
| 25 | * work around the problem by modifying if_sdio_host_to_card() and |
| 26 | * if_sdio_card_to_host() to pad the data. |
| 27 | */ |
| 28 | |
Ilpo Järvinen | 2382792 | 2008-12-13 21:33:13 +0200 | [diff] [blame] | 29 | #include <linux/kernel.h> |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 30 | #include <linux/moduleparam.h> |
| 31 | #include <linux/firmware.h> |
| 32 | #include <linux/netdevice.h> |
| 33 | #include <linux/delay.h> |
| 34 | #include <linux/mmc/card.h> |
| 35 | #include <linux/mmc/sdio_func.h> |
| 36 | #include <linux/mmc/sdio_ids.h> |
| 37 | |
| 38 | #include "host.h" |
| 39 | #include "decl.h" |
| 40 | #include "defs.h" |
| 41 | #include "dev.h" |
Bing Zhao | 6bc61f4 | 2009-06-01 18:04:36 -0700 | [diff] [blame] | 42 | #include "cmd.h" |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 43 | #include "if_sdio.h" |
| 44 | |
Bing Zhao | 6bc61f4 | 2009-06-01 18:04:36 -0700 | [diff] [blame] | 45 | /* The if_sdio_remove() callback function is called when |
| 46 | * user removes this module from kernel space or ejects |
| 47 | * the card from the slot. The driver handles these 2 cases |
| 48 | * differently for SD8688 combo chip. |
| 49 | * If the user is removing the module, the FUNC_SHUTDOWN |
| 50 | * command for SD8688 is sent to the firmware. |
| 51 | * If the card is removed, there is no need to send this command. |
| 52 | * |
| 53 | * The variable 'user_rmmod' is used to distinguish these two |
| 54 | * scenarios. This flag is initialized as FALSE in case the card |
| 55 | * is removed, and will be set to TRUE for module removal when |
| 56 | * module_exit function is called. |
| 57 | */ |
| 58 | static u8 user_rmmod; |
| 59 | |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 60 | static char *lbs_helper_name = NULL; |
| 61 | module_param_named(helper_name, lbs_helper_name, charp, 0644); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 62 | |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 63 | static char *lbs_fw_name = NULL; |
| 64 | module_param_named(fw_name, lbs_fw_name, charp, 0644); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 65 | |
| 66 | static const struct sdio_device_id if_sdio_ids[] = { |
Bing Zhao | e45d8e5 | 2009-04-06 15:50:56 -0700 | [diff] [blame] | 67 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, |
| 68 | SDIO_DEVICE_ID_MARVELL_LIBERTAS) }, |
| 69 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, |
| 70 | SDIO_DEVICE_ID_MARVELL_8688WLAN) }, |
| 71 | { /* end: all zeroes */ }, |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 72 | }; |
| 73 | |
| 74 | MODULE_DEVICE_TABLE(sdio, if_sdio_ids); |
| 75 | |
| 76 | struct if_sdio_model { |
| 77 | int model; |
| 78 | const char *helper; |
| 79 | const char *firmware; |
| 80 | }; |
| 81 | |
| 82 | static struct if_sdio_model if_sdio_models[] = { |
| 83 | { |
| 84 | /* 8385 */ |
Bing Zhao | e70a5ac | 2009-05-19 19:48:18 -0700 | [diff] [blame] | 85 | .model = IF_SDIO_MODEL_8385, |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 86 | .helper = "sd8385_helper.bin", |
| 87 | .firmware = "sd8385.bin", |
| 88 | }, |
| 89 | { |
| 90 | /* 8686 */ |
Bing Zhao | e70a5ac | 2009-05-19 19:48:18 -0700 | [diff] [blame] | 91 | .model = IF_SDIO_MODEL_8686, |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 92 | .helper = "sd8686_helper.bin", |
| 93 | .firmware = "sd8686.bin", |
| 94 | }, |
Bing Zhao | e45d8e5 | 2009-04-06 15:50:56 -0700 | [diff] [blame] | 95 | { |
| 96 | /* 8688 */ |
Bing Zhao | e70a5ac | 2009-05-19 19:48:18 -0700 | [diff] [blame] | 97 | .model = IF_SDIO_MODEL_8688, |
Bing Zhao | e45d8e5 | 2009-04-06 15:50:56 -0700 | [diff] [blame] | 98 | .helper = "sd8688_helper.bin", |
| 99 | .firmware = "sd8688.bin", |
| 100 | }, |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 101 | }; |
Ben Hutchings | a974a4b | 2009-11-07 22:00:03 +0000 | [diff] [blame^] | 102 | MODULE_FIRMWARE("sd8385_helper.bin"); |
| 103 | MODULE_FIRMWARE("sd8385.bin"); |
| 104 | MODULE_FIRMWARE("sd8686_helper.bin"); |
| 105 | MODULE_FIRMWARE("sd8686.bin"); |
| 106 | MODULE_FIRMWARE("sd8688_helper.bin"); |
| 107 | MODULE_FIRMWARE("sd8688.bin"); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 108 | |
| 109 | struct if_sdio_packet { |
| 110 | struct if_sdio_packet *next; |
| 111 | u16 nb; |
| 112 | u8 buffer[0] __attribute__((aligned(4))); |
| 113 | }; |
| 114 | |
| 115 | struct if_sdio_card { |
| 116 | struct sdio_func *func; |
Holger Schurig | 69f9032 | 2007-11-23 15:43:44 +0100 | [diff] [blame] | 117 | struct lbs_private *priv; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 118 | |
| 119 | int model; |
| 120 | unsigned long ioport; |
Bing Zhao | 2c7e579 | 2009-05-21 11:32:34 -0700 | [diff] [blame] | 121 | unsigned int scratch_reg; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 122 | |
| 123 | const char *helper; |
| 124 | const char *firmware; |
| 125 | |
| 126 | u8 buffer[65536]; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 127 | |
| 128 | spinlock_t lock; |
| 129 | struct if_sdio_packet *packets; |
Dan Williams | 9b02f41 | 2009-02-20 12:27:38 -0500 | [diff] [blame] | 130 | |
| 131 | struct workqueue_struct *workqueue; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 132 | struct work_struct packet_worker; |
Bing Zhao | b136a14 | 2009-05-19 19:48:19 -0700 | [diff] [blame] | 133 | |
| 134 | u8 rx_unit; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 135 | }; |
| 136 | |
| 137 | /********************************************************************/ |
| 138 | /* I/O */ |
| 139 | /********************************************************************/ |
| 140 | |
Bing Zhao | 2c7e579 | 2009-05-21 11:32:34 -0700 | [diff] [blame] | 141 | /* |
| 142 | * For SD8385/SD8686, this function reads firmware status after |
| 143 | * the image is downloaded, or reads RX packet length when |
| 144 | * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received. |
| 145 | * For SD8688, this function reads firmware status only. |
| 146 | */ |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 147 | static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err) |
| 148 | { |
Bing Zhao | 2c7e579 | 2009-05-21 11:32:34 -0700 | [diff] [blame] | 149 | int ret; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 150 | u16 scratch; |
| 151 | |
Bing Zhao | 2c7e579 | 2009-05-21 11:32:34 -0700 | [diff] [blame] | 152 | scratch = sdio_readb(card->func, card->scratch_reg, &ret); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 153 | if (!ret) |
Bing Zhao | 2c7e579 | 2009-05-21 11:32:34 -0700 | [diff] [blame] | 154 | scratch |= sdio_readb(card->func, card->scratch_reg + 1, |
| 155 | &ret) << 8; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 156 | |
| 157 | if (err) |
| 158 | *err = ret; |
| 159 | |
| 160 | if (ret) |
| 161 | return 0xffff; |
| 162 | |
| 163 | return scratch; |
| 164 | } |
| 165 | |
Bing Zhao | b136a14 | 2009-05-19 19:48:19 -0700 | [diff] [blame] | 166 | static u8 if_sdio_read_rx_unit(struct if_sdio_card *card) |
| 167 | { |
| 168 | int ret; |
| 169 | u8 rx_unit; |
| 170 | |
| 171 | rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret); |
| 172 | |
| 173 | if (ret) |
| 174 | rx_unit = 0; |
| 175 | |
| 176 | return rx_unit; |
| 177 | } |
| 178 | |
| 179 | static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err) |
| 180 | { |
| 181 | int ret; |
| 182 | u16 rx_len; |
| 183 | |
| 184 | switch (card->model) { |
| 185 | case IF_SDIO_MODEL_8385: |
| 186 | case IF_SDIO_MODEL_8686: |
| 187 | rx_len = if_sdio_read_scratch(card, &ret); |
| 188 | break; |
| 189 | case IF_SDIO_MODEL_8688: |
| 190 | default: /* for newer chipsets */ |
| 191 | rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret); |
| 192 | if (!ret) |
| 193 | rx_len <<= card->rx_unit; |
| 194 | else |
| 195 | rx_len = 0xffff; /* invalid length */ |
| 196 | |
| 197 | break; |
| 198 | } |
| 199 | |
| 200 | if (err) |
| 201 | *err = ret; |
| 202 | |
| 203 | return rx_len; |
| 204 | } |
| 205 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 206 | static int if_sdio_handle_cmd(struct if_sdio_card *card, |
| 207 | u8 *buffer, unsigned size) |
| 208 | { |
Holger Schurig | 7919b89 | 2008-04-01 14:50:43 +0200 | [diff] [blame] | 209 | struct lbs_private *priv = card->priv; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 210 | int ret; |
| 211 | unsigned long flags; |
Holger Schurig | 7919b89 | 2008-04-01 14:50:43 +0200 | [diff] [blame] | 212 | u8 i; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 213 | |
| 214 | lbs_deb_enter(LBS_DEB_SDIO); |
| 215 | |
Dan Williams | ddac452 | 2007-12-11 13:49:39 -0500 | [diff] [blame] | 216 | if (size > LBS_CMD_BUFFER_SIZE) { |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 217 | lbs_deb_sdio("response packet too large (%d bytes)\n", |
| 218 | (int)size); |
| 219 | ret = -E2BIG; |
| 220 | goto out; |
| 221 | } |
| 222 | |
Holger Schurig | 7919b89 | 2008-04-01 14:50:43 +0200 | [diff] [blame] | 223 | spin_lock_irqsave(&priv->driver_lock, flags); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 224 | |
Holger Schurig | 7919b89 | 2008-04-01 14:50:43 +0200 | [diff] [blame] | 225 | i = (priv->resp_idx == 0) ? 1 : 0; |
| 226 | BUG_ON(priv->resp_len[i]); |
| 227 | priv->resp_len[i] = size; |
| 228 | memcpy(priv->resp_buf[i], buffer, size); |
| 229 | lbs_notify_command_response(priv, i); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 230 | |
Holger Schurig | 7919b89 | 2008-04-01 14:50:43 +0200 | [diff] [blame] | 231 | spin_unlock_irqrestore(&card->priv->driver_lock, flags); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 232 | |
| 233 | ret = 0; |
| 234 | |
| 235 | out: |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 236 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 237 | return ret; |
| 238 | } |
| 239 | |
| 240 | static int if_sdio_handle_data(struct if_sdio_card *card, |
| 241 | u8 *buffer, unsigned size) |
| 242 | { |
| 243 | int ret; |
| 244 | struct sk_buff *skb; |
| 245 | char *data; |
| 246 | |
| 247 | lbs_deb_enter(LBS_DEB_SDIO); |
| 248 | |
| 249 | if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) { |
| 250 | lbs_deb_sdio("response packet too large (%d bytes)\n", |
| 251 | (int)size); |
| 252 | ret = -E2BIG; |
| 253 | goto out; |
| 254 | } |
| 255 | |
Pierre Ossman | 51e6b71 | 2007-10-22 19:05:32 +0200 | [diff] [blame] | 256 | skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 257 | if (!skb) { |
| 258 | ret = -ENOMEM; |
| 259 | goto out; |
| 260 | } |
| 261 | |
Pierre Ossman | 51e6b71 | 2007-10-22 19:05:32 +0200 | [diff] [blame] | 262 | skb_reserve(skb, NET_IP_ALIGN); |
| 263 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 264 | data = skb_put(skb, size); |
| 265 | |
| 266 | memcpy(data, buffer, size); |
| 267 | |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 268 | lbs_process_rxed_packet(card->priv, skb); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 269 | |
| 270 | ret = 0; |
| 271 | |
| 272 | out: |
| 273 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 274 | |
| 275 | return ret; |
| 276 | } |
| 277 | |
| 278 | static int if_sdio_handle_event(struct if_sdio_card *card, |
| 279 | u8 *buffer, unsigned size) |
| 280 | { |
| 281 | int ret; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 282 | u32 event; |
| 283 | |
| 284 | lbs_deb_enter(LBS_DEB_SDIO); |
| 285 | |
Bing Zhao | e70a5ac | 2009-05-19 19:48:18 -0700 | [diff] [blame] | 286 | if (card->model == IF_SDIO_MODEL_8385) { |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 287 | event = sdio_readb(card->func, IF_SDIO_EVENT, &ret); |
| 288 | if (ret) |
| 289 | goto out; |
Bing Zhao | f5ac2b9 | 2009-02-04 22:22:39 -0800 | [diff] [blame] | 290 | |
| 291 | /* right shift 3 bits to get the event id */ |
| 292 | event >>= 3; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 293 | } else { |
| 294 | if (size < 4) { |
| 295 | lbs_deb_sdio("event packet too small (%d bytes)\n", |
| 296 | (int)size); |
| 297 | ret = -EINVAL; |
| 298 | goto out; |
| 299 | } |
| 300 | event = buffer[3] << 24; |
| 301 | event |= buffer[2] << 16; |
| 302 | event |= buffer[1] << 8; |
| 303 | event |= buffer[0] << 0; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 304 | } |
| 305 | |
Holger Schurig | 7919b89 | 2008-04-01 14:50:43 +0200 | [diff] [blame] | 306 | lbs_queue_event(card->priv, event & 0xFF); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 307 | ret = 0; |
| 308 | |
| 309 | out: |
| 310 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 311 | |
| 312 | return ret; |
| 313 | } |
| 314 | |
| 315 | static int if_sdio_card_to_host(struct if_sdio_card *card) |
| 316 | { |
| 317 | int ret; |
| 318 | u8 status; |
| 319 | u16 size, type, chunk; |
| 320 | unsigned long timeout; |
| 321 | |
| 322 | lbs_deb_enter(LBS_DEB_SDIO); |
| 323 | |
Bing Zhao | b136a14 | 2009-05-19 19:48:19 -0700 | [diff] [blame] | 324 | size = if_sdio_read_rx_len(card, &ret); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 325 | if (ret) |
| 326 | goto out; |
| 327 | |
| 328 | if (size < 4) { |
| 329 | lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n", |
| 330 | (int)size); |
| 331 | ret = -EINVAL; |
| 332 | goto out; |
| 333 | } |
| 334 | |
| 335 | timeout = jiffies + HZ; |
| 336 | while (1) { |
| 337 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); |
| 338 | if (ret) |
| 339 | goto out; |
| 340 | if (status & IF_SDIO_IO_RDY) |
| 341 | break; |
| 342 | if (time_after(jiffies, timeout)) { |
| 343 | ret = -ETIMEDOUT; |
| 344 | goto out; |
| 345 | } |
| 346 | mdelay(1); |
| 347 | } |
| 348 | |
| 349 | /* |
| 350 | * The transfer must be in one transaction or the firmware |
Pierre Ossman | ad3868b | 2008-06-28 12:52:45 +0200 | [diff] [blame] | 351 | * goes suicidal. There's no way to guarantee that for all |
| 352 | * controllers, but we can at least try. |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 353 | */ |
Pierre Ossman | ad3868b | 2008-06-28 12:52:45 +0200 | [diff] [blame] | 354 | chunk = sdio_align_size(card->func, size); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 355 | |
| 356 | ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk); |
| 357 | if (ret) |
| 358 | goto out; |
| 359 | |
| 360 | chunk = card->buffer[0] | (card->buffer[1] << 8); |
| 361 | type = card->buffer[2] | (card->buffer[3] << 8); |
| 362 | |
| 363 | lbs_deb_sdio("packet of type %d and size %d bytes\n", |
| 364 | (int)type, (int)chunk); |
| 365 | |
| 366 | if (chunk > size) { |
| 367 | lbs_deb_sdio("packet fragment (%d > %d)\n", |
| 368 | (int)chunk, (int)size); |
| 369 | ret = -EINVAL; |
| 370 | goto out; |
| 371 | } |
| 372 | |
| 373 | if (chunk < size) { |
| 374 | lbs_deb_sdio("packet fragment (%d < %d)\n", |
| 375 | (int)chunk, (int)size); |
| 376 | } |
| 377 | |
| 378 | switch (type) { |
| 379 | case MVMS_CMD: |
| 380 | ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); |
| 381 | if (ret) |
| 382 | goto out; |
| 383 | break; |
| 384 | case MVMS_DAT: |
| 385 | ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4); |
| 386 | if (ret) |
| 387 | goto out; |
| 388 | break; |
| 389 | case MVMS_EVENT: |
| 390 | ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4); |
| 391 | if (ret) |
| 392 | goto out; |
| 393 | break; |
| 394 | default: |
| 395 | lbs_deb_sdio("invalid type (%d) from firmware\n", |
| 396 | (int)type); |
| 397 | ret = -EINVAL; |
| 398 | goto out; |
| 399 | } |
| 400 | |
| 401 | out: |
| 402 | if (ret) |
| 403 | lbs_pr_err("problem fetching packet from firmware\n"); |
| 404 | |
| 405 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 406 | |
| 407 | return ret; |
| 408 | } |
| 409 | |
| 410 | static void if_sdio_host_to_card_worker(struct work_struct *work) |
| 411 | { |
| 412 | struct if_sdio_card *card; |
| 413 | struct if_sdio_packet *packet; |
| 414 | unsigned long timeout; |
| 415 | u8 status; |
| 416 | int ret; |
| 417 | unsigned long flags; |
| 418 | |
| 419 | lbs_deb_enter(LBS_DEB_SDIO); |
| 420 | |
| 421 | card = container_of(work, struct if_sdio_card, packet_worker); |
| 422 | |
| 423 | while (1) { |
| 424 | spin_lock_irqsave(&card->lock, flags); |
| 425 | packet = card->packets; |
| 426 | if (packet) |
| 427 | card->packets = packet->next; |
| 428 | spin_unlock_irqrestore(&card->lock, flags); |
| 429 | |
| 430 | if (!packet) |
| 431 | break; |
| 432 | |
| 433 | sdio_claim_host(card->func); |
| 434 | |
| 435 | timeout = jiffies + HZ; |
| 436 | while (1) { |
| 437 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); |
| 438 | if (ret) |
| 439 | goto release; |
| 440 | if (status & IF_SDIO_IO_RDY) |
| 441 | break; |
| 442 | if (time_after(jiffies, timeout)) { |
| 443 | ret = -ETIMEDOUT; |
| 444 | goto release; |
| 445 | } |
| 446 | mdelay(1); |
| 447 | } |
| 448 | |
| 449 | ret = sdio_writesb(card->func, card->ioport, |
| 450 | packet->buffer, packet->nb); |
| 451 | if (ret) |
| 452 | goto release; |
| 453 | release: |
| 454 | sdio_release_host(card->func); |
| 455 | |
| 456 | kfree(packet); |
| 457 | } |
| 458 | |
| 459 | lbs_deb_leave(LBS_DEB_SDIO); |
| 460 | } |
| 461 | |
| 462 | /********************************************************************/ |
| 463 | /* Firmware */ |
| 464 | /********************************************************************/ |
| 465 | |
| 466 | static int if_sdio_prog_helper(struct if_sdio_card *card) |
| 467 | { |
| 468 | int ret; |
| 469 | u8 status; |
| 470 | const struct firmware *fw; |
| 471 | unsigned long timeout; |
| 472 | u8 *chunk_buffer; |
| 473 | u32 chunk_size; |
David Woodhouse | 6dfff89 | 2008-05-23 18:37:51 +0100 | [diff] [blame] | 474 | const u8 *firmware; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 475 | size_t size; |
| 476 | |
| 477 | lbs_deb_enter(LBS_DEB_SDIO); |
| 478 | |
| 479 | ret = request_firmware(&fw, card->helper, &card->func->dev); |
| 480 | if (ret) { |
| 481 | lbs_pr_err("can't load helper firmware\n"); |
| 482 | goto out; |
| 483 | } |
| 484 | |
| 485 | chunk_buffer = kzalloc(64, GFP_KERNEL); |
| 486 | if (!chunk_buffer) { |
| 487 | ret = -ENOMEM; |
| 488 | goto release_fw; |
| 489 | } |
| 490 | |
| 491 | sdio_claim_host(card->func); |
| 492 | |
| 493 | ret = sdio_set_block_size(card->func, 32); |
| 494 | if (ret) |
| 495 | goto release; |
| 496 | |
| 497 | firmware = fw->data; |
| 498 | size = fw->size; |
| 499 | |
| 500 | while (size) { |
| 501 | timeout = jiffies + HZ; |
| 502 | while (1) { |
| 503 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); |
| 504 | if (ret) |
| 505 | goto release; |
| 506 | if ((status & IF_SDIO_IO_RDY) && |
| 507 | (status & IF_SDIO_DL_RDY)) |
| 508 | break; |
| 509 | if (time_after(jiffies, timeout)) { |
| 510 | ret = -ETIMEDOUT; |
| 511 | goto release; |
| 512 | } |
| 513 | mdelay(1); |
| 514 | } |
| 515 | |
| 516 | chunk_size = min(size, (size_t)60); |
| 517 | |
Holger Schurig | c2df2ef | 2007-12-07 15:30:44 +0000 | [diff] [blame] | 518 | *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 519 | memcpy(chunk_buffer + 4, firmware, chunk_size); |
| 520 | /* |
| 521 | lbs_deb_sdio("sending %d bytes chunk\n", chunk_size); |
| 522 | */ |
| 523 | ret = sdio_writesb(card->func, card->ioport, |
| 524 | chunk_buffer, 64); |
| 525 | if (ret) |
| 526 | goto release; |
| 527 | |
| 528 | firmware += chunk_size; |
| 529 | size -= chunk_size; |
| 530 | } |
| 531 | |
| 532 | /* an empty block marks the end of the transfer */ |
| 533 | memset(chunk_buffer, 0, 4); |
| 534 | ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64); |
| 535 | if (ret) |
| 536 | goto release; |
| 537 | |
| 538 | lbs_deb_sdio("waiting for helper to boot...\n"); |
| 539 | |
| 540 | /* wait for the helper to boot by looking at the size register */ |
| 541 | timeout = jiffies + HZ; |
| 542 | while (1) { |
| 543 | u16 req_size; |
| 544 | |
| 545 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); |
| 546 | if (ret) |
| 547 | goto release; |
| 548 | |
| 549 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; |
| 550 | if (ret) |
| 551 | goto release; |
| 552 | |
| 553 | if (req_size != 0) |
| 554 | break; |
| 555 | |
| 556 | if (time_after(jiffies, timeout)) { |
| 557 | ret = -ETIMEDOUT; |
| 558 | goto release; |
| 559 | } |
| 560 | |
| 561 | msleep(10); |
| 562 | } |
| 563 | |
| 564 | ret = 0; |
| 565 | |
| 566 | release: |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 567 | sdio_release_host(card->func); |
| 568 | kfree(chunk_buffer); |
| 569 | release_fw: |
| 570 | release_firmware(fw); |
| 571 | |
| 572 | out: |
| 573 | if (ret) |
| 574 | lbs_pr_err("failed to load helper firmware\n"); |
| 575 | |
| 576 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 577 | |
| 578 | return ret; |
| 579 | } |
| 580 | |
| 581 | static int if_sdio_prog_real(struct if_sdio_card *card) |
| 582 | { |
| 583 | int ret; |
| 584 | u8 status; |
| 585 | const struct firmware *fw; |
| 586 | unsigned long timeout; |
| 587 | u8 *chunk_buffer; |
| 588 | u32 chunk_size; |
David Woodhouse | 6dfff89 | 2008-05-23 18:37:51 +0100 | [diff] [blame] | 589 | const u8 *firmware; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 590 | size_t size, req_size; |
| 591 | |
| 592 | lbs_deb_enter(LBS_DEB_SDIO); |
| 593 | |
| 594 | ret = request_firmware(&fw, card->firmware, &card->func->dev); |
| 595 | if (ret) { |
| 596 | lbs_pr_err("can't load firmware\n"); |
| 597 | goto out; |
| 598 | } |
| 599 | |
| 600 | chunk_buffer = kzalloc(512, GFP_KERNEL); |
| 601 | if (!chunk_buffer) { |
| 602 | ret = -ENOMEM; |
| 603 | goto release_fw; |
| 604 | } |
| 605 | |
| 606 | sdio_claim_host(card->func); |
| 607 | |
| 608 | ret = sdio_set_block_size(card->func, 32); |
| 609 | if (ret) |
| 610 | goto release; |
| 611 | |
| 612 | firmware = fw->data; |
| 613 | size = fw->size; |
| 614 | |
| 615 | while (size) { |
| 616 | timeout = jiffies + HZ; |
| 617 | while (1) { |
| 618 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); |
| 619 | if (ret) |
| 620 | goto release; |
| 621 | if ((status & IF_SDIO_IO_RDY) && |
| 622 | (status & IF_SDIO_DL_RDY)) |
| 623 | break; |
| 624 | if (time_after(jiffies, timeout)) { |
| 625 | ret = -ETIMEDOUT; |
| 626 | goto release; |
| 627 | } |
| 628 | mdelay(1); |
| 629 | } |
| 630 | |
| 631 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); |
| 632 | if (ret) |
| 633 | goto release; |
| 634 | |
| 635 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; |
| 636 | if (ret) |
| 637 | goto release; |
| 638 | /* |
| 639 | lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size); |
| 640 | */ |
| 641 | if (req_size == 0) { |
| 642 | lbs_deb_sdio("firmware helper gave up early\n"); |
| 643 | ret = -EIO; |
| 644 | goto release; |
| 645 | } |
| 646 | |
| 647 | if (req_size & 0x01) { |
| 648 | lbs_deb_sdio("firmware helper signalled error\n"); |
| 649 | ret = -EIO; |
| 650 | goto release; |
| 651 | } |
| 652 | |
| 653 | if (req_size > size) |
| 654 | req_size = size; |
| 655 | |
| 656 | while (req_size) { |
| 657 | chunk_size = min(req_size, (size_t)512); |
| 658 | |
| 659 | memcpy(chunk_buffer, firmware, chunk_size); |
| 660 | /* |
| 661 | lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n", |
| 662 | chunk_size, (chunk_size + 31) / 32 * 32); |
| 663 | */ |
| 664 | ret = sdio_writesb(card->func, card->ioport, |
Ilpo Järvinen | 2382792 | 2008-12-13 21:33:13 +0200 | [diff] [blame] | 665 | chunk_buffer, roundup(chunk_size, 32)); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 666 | if (ret) |
| 667 | goto release; |
| 668 | |
| 669 | firmware += chunk_size; |
| 670 | size -= chunk_size; |
| 671 | req_size -= chunk_size; |
| 672 | } |
| 673 | } |
| 674 | |
| 675 | ret = 0; |
| 676 | |
| 677 | lbs_deb_sdio("waiting for firmware to boot...\n"); |
| 678 | |
| 679 | /* wait for the firmware to boot */ |
| 680 | timeout = jiffies + HZ; |
| 681 | while (1) { |
| 682 | u16 scratch; |
| 683 | |
| 684 | scratch = if_sdio_read_scratch(card, &ret); |
| 685 | if (ret) |
| 686 | goto release; |
| 687 | |
| 688 | if (scratch == IF_SDIO_FIRMWARE_OK) |
| 689 | break; |
| 690 | |
| 691 | if (time_after(jiffies, timeout)) { |
| 692 | ret = -ETIMEDOUT; |
| 693 | goto release; |
| 694 | } |
| 695 | |
| 696 | msleep(10); |
| 697 | } |
| 698 | |
| 699 | ret = 0; |
| 700 | |
| 701 | release: |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 702 | sdio_release_host(card->func); |
| 703 | kfree(chunk_buffer); |
| 704 | release_fw: |
| 705 | release_firmware(fw); |
| 706 | |
| 707 | out: |
| 708 | if (ret) |
| 709 | lbs_pr_err("failed to load firmware\n"); |
| 710 | |
| 711 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 712 | |
| 713 | return ret; |
| 714 | } |
| 715 | |
| 716 | static int if_sdio_prog_firmware(struct if_sdio_card *card) |
| 717 | { |
| 718 | int ret; |
| 719 | u16 scratch; |
| 720 | |
| 721 | lbs_deb_enter(LBS_DEB_SDIO); |
| 722 | |
| 723 | sdio_claim_host(card->func); |
| 724 | scratch = if_sdio_read_scratch(card, &ret); |
| 725 | sdio_release_host(card->func); |
| 726 | |
| 727 | if (ret) |
| 728 | goto out; |
| 729 | |
Bing Zhao | 2c7e579 | 2009-05-21 11:32:34 -0700 | [diff] [blame] | 730 | lbs_deb_sdio("firmware status = %#x\n", scratch); |
| 731 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 732 | if (scratch == IF_SDIO_FIRMWARE_OK) { |
| 733 | lbs_deb_sdio("firmware already loaded\n"); |
| 734 | goto success; |
| 735 | } |
| 736 | |
| 737 | ret = if_sdio_prog_helper(card); |
| 738 | if (ret) |
| 739 | goto out; |
| 740 | |
| 741 | ret = if_sdio_prog_real(card); |
| 742 | if (ret) |
| 743 | goto out; |
| 744 | |
| 745 | success: |
Bing Zhao | d26285f8 | 2009-05-19 19:48:20 -0700 | [diff] [blame] | 746 | sdio_claim_host(card->func); |
| 747 | sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE); |
| 748 | sdio_release_host(card->func); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 749 | ret = 0; |
| 750 | |
| 751 | out: |
| 752 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 753 | |
| 754 | return ret; |
| 755 | } |
| 756 | |
| 757 | /*******************************************************************/ |
| 758 | /* Libertas callbacks */ |
| 759 | /*******************************************************************/ |
| 760 | |
Holger Schurig | 69f9032 | 2007-11-23 15:43:44 +0100 | [diff] [blame] | 761 | static int if_sdio_host_to_card(struct lbs_private *priv, |
| 762 | u8 type, u8 *buf, u16 nb) |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 763 | { |
| 764 | int ret; |
| 765 | struct if_sdio_card *card; |
| 766 | struct if_sdio_packet *packet, *cur; |
| 767 | u16 size; |
| 768 | unsigned long flags; |
| 769 | |
| 770 | lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb); |
| 771 | |
| 772 | card = priv->card; |
| 773 | |
| 774 | if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) { |
| 775 | ret = -EINVAL; |
| 776 | goto out; |
| 777 | } |
| 778 | |
| 779 | /* |
| 780 | * The transfer must be in one transaction or the firmware |
Pierre Ossman | ad3868b | 2008-06-28 12:52:45 +0200 | [diff] [blame] | 781 | * goes suicidal. There's no way to guarantee that for all |
| 782 | * controllers, but we can at least try. |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 783 | */ |
Pierre Ossman | ad3868b | 2008-06-28 12:52:45 +0200 | [diff] [blame] | 784 | size = sdio_align_size(card->func, nb + 4); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 785 | |
| 786 | packet = kzalloc(sizeof(struct if_sdio_packet) + size, |
| 787 | GFP_ATOMIC); |
| 788 | if (!packet) { |
| 789 | ret = -ENOMEM; |
| 790 | goto out; |
| 791 | } |
| 792 | |
| 793 | packet->next = NULL; |
| 794 | packet->nb = size; |
| 795 | |
| 796 | /* |
| 797 | * SDIO specific header. |
| 798 | */ |
| 799 | packet->buffer[0] = (nb + 4) & 0xff; |
| 800 | packet->buffer[1] = ((nb + 4) >> 8) & 0xff; |
| 801 | packet->buffer[2] = type; |
| 802 | packet->buffer[3] = 0; |
| 803 | |
| 804 | memcpy(packet->buffer + 4, buf, nb); |
| 805 | |
| 806 | spin_lock_irqsave(&card->lock, flags); |
| 807 | |
| 808 | if (!card->packets) |
| 809 | card->packets = packet; |
| 810 | else { |
| 811 | cur = card->packets; |
| 812 | while (cur->next) |
| 813 | cur = cur->next; |
| 814 | cur->next = packet; |
| 815 | } |
| 816 | |
| 817 | switch (type) { |
| 818 | case MVMS_CMD: |
| 819 | priv->dnld_sent = DNLD_CMD_SENT; |
| 820 | break; |
| 821 | case MVMS_DAT: |
| 822 | priv->dnld_sent = DNLD_DATA_SENT; |
| 823 | break; |
| 824 | default: |
| 825 | lbs_deb_sdio("unknown packet type %d\n", (int)type); |
| 826 | } |
| 827 | |
| 828 | spin_unlock_irqrestore(&card->lock, flags); |
| 829 | |
Dan Williams | 9b02f41 | 2009-02-20 12:27:38 -0500 | [diff] [blame] | 830 | queue_work(card->workqueue, &card->packet_worker); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 831 | |
| 832 | ret = 0; |
| 833 | |
| 834 | out: |
| 835 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 836 | |
| 837 | return ret; |
| 838 | } |
| 839 | |
Amitkumar Karwar | 4912545 | 2009-09-30 20:04:38 -0700 | [diff] [blame] | 840 | static int if_sdio_enter_deep_sleep(struct lbs_private *priv) |
| 841 | { |
| 842 | int ret = -1; |
| 843 | struct cmd_header cmd; |
| 844 | |
| 845 | memset(&cmd, 0, sizeof(cmd)); |
| 846 | |
| 847 | lbs_deb_sdio("send DEEP_SLEEP command\n"); |
| 848 | ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd), |
| 849 | lbs_cmd_copyback, (unsigned long) &cmd); |
| 850 | if (ret) |
| 851 | lbs_pr_err("DEEP_SLEEP cmd failed\n"); |
| 852 | |
| 853 | mdelay(200); |
| 854 | return ret; |
| 855 | } |
| 856 | |
| 857 | static int if_sdio_exit_deep_sleep(struct lbs_private *priv) |
| 858 | { |
| 859 | struct if_sdio_card *card = priv->card; |
| 860 | int ret = -1; |
| 861 | |
| 862 | lbs_deb_enter(LBS_DEB_SDIO); |
| 863 | sdio_claim_host(card->func); |
| 864 | |
| 865 | sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret); |
| 866 | if (ret) |
| 867 | lbs_pr_err("sdio_writeb failed!\n"); |
| 868 | |
| 869 | sdio_release_host(card->func); |
| 870 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 871 | return ret; |
| 872 | } |
| 873 | |
| 874 | static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv) |
| 875 | { |
| 876 | struct if_sdio_card *card = priv->card; |
| 877 | int ret = -1; |
| 878 | |
| 879 | lbs_deb_enter(LBS_DEB_SDIO); |
| 880 | sdio_claim_host(card->func); |
| 881 | |
| 882 | sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret); |
| 883 | if (ret) |
| 884 | lbs_pr_err("sdio_writeb failed!\n"); |
| 885 | |
| 886 | sdio_release_host(card->func); |
| 887 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 888 | return ret; |
| 889 | |
| 890 | } |
| 891 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 892 | /*******************************************************************/ |
| 893 | /* SDIO callbacks */ |
| 894 | /*******************************************************************/ |
| 895 | |
| 896 | static void if_sdio_interrupt(struct sdio_func *func) |
| 897 | { |
| 898 | int ret; |
| 899 | struct if_sdio_card *card; |
| 900 | u8 cause; |
| 901 | |
| 902 | lbs_deb_enter(LBS_DEB_SDIO); |
| 903 | |
| 904 | card = sdio_get_drvdata(func); |
| 905 | |
| 906 | cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret); |
| 907 | if (ret) |
| 908 | goto out; |
| 909 | |
| 910 | lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause); |
| 911 | |
| 912 | sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret); |
| 913 | if (ret) |
| 914 | goto out; |
| 915 | |
| 916 | /* |
| 917 | * Ignore the define name, this really means the card has |
| 918 | * successfully received the command. |
| 919 | */ |
Amitkumar Karwar | 4912545 | 2009-09-30 20:04:38 -0700 | [diff] [blame] | 920 | card->priv->is_activity_detected = 1; |
David Woodhouse | e775ed7 | 2007-12-06 14:36:11 +0000 | [diff] [blame] | 921 | if (cause & IF_SDIO_H_INT_DNLD) |
| 922 | lbs_host_to_card_done(card->priv); |
| 923 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 924 | |
| 925 | if (cause & IF_SDIO_H_INT_UPLD) { |
| 926 | ret = if_sdio_card_to_host(card); |
| 927 | if (ret) |
| 928 | goto out; |
| 929 | } |
| 930 | |
| 931 | ret = 0; |
| 932 | |
| 933 | out: |
| 934 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 935 | } |
| 936 | |
| 937 | static int if_sdio_probe(struct sdio_func *func, |
| 938 | const struct sdio_device_id *id) |
| 939 | { |
| 940 | struct if_sdio_card *card; |
Holger Schurig | 69f9032 | 2007-11-23 15:43:44 +0100 | [diff] [blame] | 941 | struct lbs_private *priv; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 942 | int ret, i; |
| 943 | unsigned int model; |
| 944 | struct if_sdio_packet *packet; |
| 945 | |
| 946 | lbs_deb_enter(LBS_DEB_SDIO); |
| 947 | |
| 948 | for (i = 0;i < func->card->num_info;i++) { |
| 949 | if (sscanf(func->card->info[i], |
| 950 | "802.11 SDIO ID: %x", &model) == 1) |
| 951 | break; |
| 952 | if (sscanf(func->card->info[i], |
| 953 | "ID: %x", &model) == 1) |
| 954 | break; |
Bing Zhao | e70a5ac | 2009-05-19 19:48:18 -0700 | [diff] [blame] | 955 | if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) { |
| 956 | model = IF_SDIO_MODEL_8385; |
| 957 | break; |
| 958 | } |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | if (i == func->card->num_info) { |
| 962 | lbs_pr_err("unable to identify card model\n"); |
| 963 | return -ENODEV; |
| 964 | } |
| 965 | |
| 966 | card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL); |
| 967 | if (!card) |
| 968 | return -ENOMEM; |
| 969 | |
| 970 | card->func = func; |
| 971 | card->model = model; |
Bing Zhao | 2c7e579 | 2009-05-21 11:32:34 -0700 | [diff] [blame] | 972 | |
| 973 | switch (card->model) { |
| 974 | case IF_SDIO_MODEL_8385: |
| 975 | card->scratch_reg = IF_SDIO_SCRATCH_OLD; |
| 976 | break; |
| 977 | case IF_SDIO_MODEL_8686: |
| 978 | card->scratch_reg = IF_SDIO_SCRATCH; |
| 979 | break; |
| 980 | case IF_SDIO_MODEL_8688: |
| 981 | default: /* for newer chipsets */ |
| 982 | card->scratch_reg = IF_SDIO_FW_STATUS; |
| 983 | break; |
| 984 | } |
| 985 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 986 | spin_lock_init(&card->lock); |
Dan Williams | 9b02f41 | 2009-02-20 12:27:38 -0500 | [diff] [blame] | 987 | card->workqueue = create_workqueue("libertas_sdio"); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 988 | INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); |
| 989 | |
| 990 | for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) { |
| 991 | if (card->model == if_sdio_models[i].model) |
| 992 | break; |
| 993 | } |
| 994 | |
| 995 | if (i == ARRAY_SIZE(if_sdio_models)) { |
| 996 | lbs_pr_err("unkown card model 0x%x\n", card->model); |
| 997 | ret = -ENODEV; |
| 998 | goto free; |
| 999 | } |
| 1000 | |
| 1001 | card->helper = if_sdio_models[i].helper; |
| 1002 | card->firmware = if_sdio_models[i].firmware; |
| 1003 | |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 1004 | if (lbs_helper_name) { |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1005 | lbs_deb_sdio("overriding helper firmware: %s\n", |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 1006 | lbs_helper_name); |
| 1007 | card->helper = lbs_helper_name; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1008 | } |
| 1009 | |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 1010 | if (lbs_fw_name) { |
| 1011 | lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name); |
| 1012 | card->firmware = lbs_fw_name; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | sdio_claim_host(func); |
| 1016 | |
| 1017 | ret = sdio_enable_func(func); |
| 1018 | if (ret) |
| 1019 | goto release; |
| 1020 | |
| 1021 | ret = sdio_claim_irq(func, if_sdio_interrupt); |
| 1022 | if (ret) |
| 1023 | goto disable; |
| 1024 | |
| 1025 | card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret); |
| 1026 | if (ret) |
| 1027 | goto release_int; |
| 1028 | |
| 1029 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8; |
| 1030 | if (ret) |
| 1031 | goto release_int; |
| 1032 | |
| 1033 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16; |
| 1034 | if (ret) |
| 1035 | goto release_int; |
| 1036 | |
| 1037 | sdio_release_host(func); |
| 1038 | |
| 1039 | sdio_set_drvdata(func, card); |
| 1040 | |
| 1041 | lbs_deb_sdio("class = 0x%X, vendor = 0x%X, " |
| 1042 | "device = 0x%X, model = 0x%X, ioport = 0x%X\n", |
| 1043 | func->class, func->vendor, func->device, |
| 1044 | model, (unsigned)card->ioport); |
| 1045 | |
| 1046 | ret = if_sdio_prog_firmware(card); |
| 1047 | if (ret) |
| 1048 | goto reclaim; |
| 1049 | |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 1050 | priv = lbs_add_card(card, &func->dev); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1051 | if (!priv) { |
| 1052 | ret = -ENOMEM; |
| 1053 | goto reclaim; |
| 1054 | } |
| 1055 | |
| 1056 | card->priv = priv; |
| 1057 | |
| 1058 | priv->card = card; |
| 1059 | priv->hw_host_to_card = if_sdio_host_to_card; |
Amitkumar Karwar | 4912545 | 2009-09-30 20:04:38 -0700 | [diff] [blame] | 1060 | priv->enter_deep_sleep = if_sdio_enter_deep_sleep; |
| 1061 | priv->exit_deep_sleep = if_sdio_exit_deep_sleep; |
| 1062 | priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1063 | |
David Woodhouse | aa21c00 | 2007-12-08 20:04:36 +0000 | [diff] [blame] | 1064 | priv->fw_ready = 1; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1065 | |
Bing Zhao | b136a14 | 2009-05-19 19:48:19 -0700 | [diff] [blame] | 1066 | sdio_claim_host(func); |
| 1067 | |
| 1068 | /* |
| 1069 | * Get rx_unit if the chip is SD8688 or newer. |
| 1070 | * SD8385 & SD8686 do not have rx_unit. |
| 1071 | */ |
| 1072 | if ((card->model != IF_SDIO_MODEL_8385) |
| 1073 | && (card->model != IF_SDIO_MODEL_8686)) |
| 1074 | card->rx_unit = if_sdio_read_rx_unit(card); |
| 1075 | else |
| 1076 | card->rx_unit = 0; |
| 1077 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1078 | /* |
| 1079 | * Enable interrupts now that everything is set up |
| 1080 | */ |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1081 | sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret); |
| 1082 | sdio_release_host(func); |
| 1083 | if (ret) |
| 1084 | goto reclaim; |
| 1085 | |
Bing Zhao | d26285f8 | 2009-05-19 19:48:20 -0700 | [diff] [blame] | 1086 | /* |
| 1087 | * FUNC_INIT is required for SD8688 WLAN/BT multiple functions |
| 1088 | */ |
Bing Zhao | 6bc61f4 | 2009-06-01 18:04:36 -0700 | [diff] [blame] | 1089 | if (card->model == IF_SDIO_MODEL_8688) { |
| 1090 | struct cmd_header cmd; |
| 1091 | |
| 1092 | memset(&cmd, 0, sizeof(cmd)); |
| 1093 | |
| 1094 | lbs_deb_sdio("send function INIT command\n"); |
| 1095 | if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd), |
| 1096 | lbs_cmd_copyback, (unsigned long) &cmd)) |
| 1097 | lbs_pr_alert("CMD_FUNC_INIT cmd failed\n"); |
| 1098 | } |
Bing Zhao | d26285f8 | 2009-05-19 19:48:20 -0700 | [diff] [blame] | 1099 | |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 1100 | ret = lbs_start_card(priv); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1101 | if (ret) |
| 1102 | goto err_activate_card; |
| 1103 | |
| 1104 | out: |
| 1105 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 1106 | |
| 1107 | return ret; |
| 1108 | |
| 1109 | err_activate_card: |
Dan Williams | 9b02f41 | 2009-02-20 12:27:38 -0500 | [diff] [blame] | 1110 | flush_workqueue(card->workqueue); |
| 1111 | lbs_remove_card(priv); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1112 | reclaim: |
| 1113 | sdio_claim_host(func); |
| 1114 | release_int: |
| 1115 | sdio_release_irq(func); |
| 1116 | disable: |
| 1117 | sdio_disable_func(func); |
| 1118 | release: |
| 1119 | sdio_release_host(func); |
| 1120 | free: |
Dan Williams | 9b02f41 | 2009-02-20 12:27:38 -0500 | [diff] [blame] | 1121 | destroy_workqueue(card->workqueue); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1122 | while (card->packets) { |
| 1123 | packet = card->packets; |
| 1124 | card->packets = card->packets->next; |
| 1125 | kfree(packet); |
| 1126 | } |
| 1127 | |
| 1128 | kfree(card); |
| 1129 | |
| 1130 | goto out; |
| 1131 | } |
| 1132 | |
| 1133 | static void if_sdio_remove(struct sdio_func *func) |
| 1134 | { |
| 1135 | struct if_sdio_card *card; |
| 1136 | struct if_sdio_packet *packet; |
| 1137 | |
| 1138 | lbs_deb_enter(LBS_DEB_SDIO); |
| 1139 | |
| 1140 | card = sdio_get_drvdata(func); |
| 1141 | |
Bing Zhao | 6bc61f4 | 2009-06-01 18:04:36 -0700 | [diff] [blame] | 1142 | if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) { |
| 1143 | /* |
| 1144 | * FUNC_SHUTDOWN is required for SD8688 WLAN/BT |
| 1145 | * multiple functions |
| 1146 | */ |
| 1147 | struct cmd_header cmd; |
| 1148 | |
| 1149 | memset(&cmd, 0, sizeof(cmd)); |
| 1150 | |
| 1151 | lbs_deb_sdio("send function SHUTDOWN command\n"); |
| 1152 | if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN, |
| 1153 | &cmd, sizeof(cmd), lbs_cmd_copyback, |
| 1154 | (unsigned long) &cmd)) |
| 1155 | lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n"); |
| 1156 | } |
Bing Zhao | d26285f8 | 2009-05-19 19:48:20 -0700 | [diff] [blame] | 1157 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1158 | |
| 1159 | lbs_deb_sdio("call remove card\n"); |
Bing Zhao | 6bc61f4 | 2009-06-01 18:04:36 -0700 | [diff] [blame] | 1160 | lbs_stop_card(card->priv); |
Holger Schurig | 1007832 | 2007-11-15 18:05:47 -0500 | [diff] [blame] | 1161 | lbs_remove_card(card->priv); |
Andrey Yurovsky | 23b149c | 2009-06-17 19:15:19 -0700 | [diff] [blame] | 1162 | card->priv->surpriseremoved = 1; |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1163 | |
Dan Williams | 9b02f41 | 2009-02-20 12:27:38 -0500 | [diff] [blame] | 1164 | flush_workqueue(card->workqueue); |
| 1165 | destroy_workqueue(card->workqueue); |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1166 | |
| 1167 | sdio_claim_host(func); |
| 1168 | sdio_release_irq(func); |
| 1169 | sdio_disable_func(func); |
| 1170 | sdio_release_host(func); |
| 1171 | |
| 1172 | while (card->packets) { |
| 1173 | packet = card->packets; |
| 1174 | card->packets = card->packets->next; |
| 1175 | kfree(packet); |
| 1176 | } |
| 1177 | |
| 1178 | kfree(card); |
| 1179 | |
| 1180 | lbs_deb_leave(LBS_DEB_SDIO); |
| 1181 | } |
| 1182 | |
| 1183 | static struct sdio_driver if_sdio_driver = { |
| 1184 | .name = "libertas_sdio", |
| 1185 | .id_table = if_sdio_ids, |
| 1186 | .probe = if_sdio_probe, |
| 1187 | .remove = if_sdio_remove, |
| 1188 | }; |
| 1189 | |
| 1190 | /*******************************************************************/ |
| 1191 | /* Module functions */ |
| 1192 | /*******************************************************************/ |
| 1193 | |
Andres Salomon | 4fb910f | 2007-11-20 17:43:45 -0500 | [diff] [blame] | 1194 | static int __init if_sdio_init_module(void) |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1195 | { |
| 1196 | int ret = 0; |
| 1197 | |
| 1198 | lbs_deb_enter(LBS_DEB_SDIO); |
| 1199 | |
| 1200 | printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n"); |
| 1201 | printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n"); |
| 1202 | |
| 1203 | ret = sdio_register_driver(&if_sdio_driver); |
| 1204 | |
Bing Zhao | 6bc61f4 | 2009-06-01 18:04:36 -0700 | [diff] [blame] | 1205 | /* Clear the flag in case user removes the card. */ |
| 1206 | user_rmmod = 0; |
| 1207 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1208 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
| 1209 | |
| 1210 | return ret; |
| 1211 | } |
| 1212 | |
Andres Salomon | 4fb910f | 2007-11-20 17:43:45 -0500 | [diff] [blame] | 1213 | static void __exit if_sdio_exit_module(void) |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1214 | { |
| 1215 | lbs_deb_enter(LBS_DEB_SDIO); |
| 1216 | |
Bing Zhao | 6bc61f4 | 2009-06-01 18:04:36 -0700 | [diff] [blame] | 1217 | /* Set the flag as user is removing this module. */ |
| 1218 | user_rmmod = 1; |
Bing Zhao | d26285f8 | 2009-05-19 19:48:20 -0700 | [diff] [blame] | 1219 | |
Pierre Ossman | 727c26e | 2007-10-17 22:24:24 +0200 | [diff] [blame] | 1220 | sdio_unregister_driver(&if_sdio_driver); |
| 1221 | |
| 1222 | lbs_deb_leave(LBS_DEB_SDIO); |
| 1223 | } |
| 1224 | |
| 1225 | module_init(if_sdio_init_module); |
| 1226 | module_exit(if_sdio_exit_module); |
| 1227 | |
| 1228 | MODULE_DESCRIPTION("Libertas SDIO WLAN Driver"); |
| 1229 | MODULE_AUTHOR("Pierre Ossman"); |
| 1230 | MODULE_LICENSE("GPL"); |