1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * linux/include/linux/mmc/host.h 2 * linux/include/linux/mmc/host.h
4 * 3 *
>> 4 * This program is free software; you can redistribute it and/or modify
>> 5 * it under the terms of the GNU General Public License version 2 as
>> 6 * published by the Free Software Foundation.
>> 7 *
5 * Host driver specific definitions. 8 * Host driver specific definitions.
6 */ 9 */
7 #ifndef LINUX_MMC_HOST_H 10 #ifndef LINUX_MMC_HOST_H
8 #define LINUX_MMC_HOST_H 11 #define LINUX_MMC_HOST_H
9 12
10 #include <linux/sched.h> 13 #include <linux/sched.h>
11 #include <linux/device.h> 14 #include <linux/device.h>
12 #include <linux/fault-inject.h> 15 #include <linux/fault-inject.h>
13 #include <linux/debugfs.h> <<
14 16
15 #include <linux/mmc/core.h> 17 #include <linux/mmc/core.h>
16 #include <linux/mmc/card.h> 18 #include <linux/mmc/card.h>
17 #include <linux/mmc/pm.h> 19 #include <linux/mmc/pm.h>
18 #include <linux/dma-direction.h> 20 #include <linux/dma-direction.h>
19 #include <linux/blk-crypto-profile.h> <<
20 21
21 struct mmc_ios { 22 struct mmc_ios {
22 unsigned int clock; 23 unsigned int clock; /* clock rate */
23 unsigned short vdd; 24 unsigned short vdd;
24 unsigned int power_delay_ms; <<
25 25
26 /* vdd stores the bit number of the selected v 26 /* vdd stores the bit number of the selected voltage range from below. */
27 27
28 unsigned char bus_mode; 28 unsigned char bus_mode; /* command output mode */
29 29
30 #define MMC_BUSMODE_OPENDRAIN 1 30 #define MMC_BUSMODE_OPENDRAIN 1
31 #define MMC_BUSMODE_PUSHPULL 2 31 #define MMC_BUSMODE_PUSHPULL 2
32 32
33 unsigned char chip_select; 33 unsigned char chip_select; /* SPI chip select */
34 34
35 #define MMC_CS_DONTCARE 0 35 #define MMC_CS_DONTCARE 0
36 #define MMC_CS_HIGH 1 36 #define MMC_CS_HIGH 1
37 #define MMC_CS_LOW 2 37 #define MMC_CS_LOW 2
38 38
39 unsigned char power_mode; 39 unsigned char power_mode; /* power supply mode */
40 40
41 #define MMC_POWER_OFF 0 41 #define MMC_POWER_OFF 0
42 #define MMC_POWER_UP 1 42 #define MMC_POWER_UP 1
43 #define MMC_POWER_ON 2 43 #define MMC_POWER_ON 2
44 #define MMC_POWER_UNDEFINED 3 44 #define MMC_POWER_UNDEFINED 3
45 45
46 unsigned char bus_width; 46 unsigned char bus_width; /* data bus width */
47 47
48 #define MMC_BUS_WIDTH_1 0 48 #define MMC_BUS_WIDTH_1 0
49 #define MMC_BUS_WIDTH_4 2 49 #define MMC_BUS_WIDTH_4 2
50 #define MMC_BUS_WIDTH_8 3 50 #define MMC_BUS_WIDTH_8 3
51 51
52 unsigned char timing; 52 unsigned char timing; /* timing specification used */
53 53
54 #define MMC_TIMING_LEGACY 0 54 #define MMC_TIMING_LEGACY 0
55 #define MMC_TIMING_MMC_HS 1 55 #define MMC_TIMING_MMC_HS 1
56 #define MMC_TIMING_SD_HS 2 56 #define MMC_TIMING_SD_HS 2
57 #define MMC_TIMING_UHS_SDR12 3 57 #define MMC_TIMING_UHS_SDR12 3
58 #define MMC_TIMING_UHS_SDR25 4 58 #define MMC_TIMING_UHS_SDR25 4
59 #define MMC_TIMING_UHS_SDR50 5 59 #define MMC_TIMING_UHS_SDR50 5
60 #define MMC_TIMING_UHS_SDR104 6 60 #define MMC_TIMING_UHS_SDR104 6
61 #define MMC_TIMING_UHS_DDR50 7 61 #define MMC_TIMING_UHS_DDR50 7
62 #define MMC_TIMING_MMC_DDR52 8 62 #define MMC_TIMING_MMC_DDR52 8
63 #define MMC_TIMING_MMC_HS200 9 63 #define MMC_TIMING_MMC_HS200 9
64 #define MMC_TIMING_MMC_HS400 10 64 #define MMC_TIMING_MMC_HS400 10
65 #define MMC_TIMING_SD_EXP 11 <<
66 #define MMC_TIMING_SD_EXP_1_2V 12 <<
67 65
68 unsigned char signal_voltage; 66 unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */
69 67
70 #define MMC_SIGNAL_VOLTAGE_330 0 68 #define MMC_SIGNAL_VOLTAGE_330 0
71 #define MMC_SIGNAL_VOLTAGE_180 1 69 #define MMC_SIGNAL_VOLTAGE_180 1
72 #define MMC_SIGNAL_VOLTAGE_120 2 70 #define MMC_SIGNAL_VOLTAGE_120 2
73 71
74 unsigned char drv_type; 72 unsigned char drv_type; /* driver type (A, B, C, D) */
75 73
76 #define MMC_SET_DRIVER_TYPE_B 0 74 #define MMC_SET_DRIVER_TYPE_B 0
77 #define MMC_SET_DRIVER_TYPE_A 1 75 #define MMC_SET_DRIVER_TYPE_A 1
78 #define MMC_SET_DRIVER_TYPE_C 2 76 #define MMC_SET_DRIVER_TYPE_C 2
79 #define MMC_SET_DRIVER_TYPE_D 3 77 #define MMC_SET_DRIVER_TYPE_D 3
80 78
81 bool enhanced_strobe; 79 bool enhanced_strobe; /* hs400es selection */
82 }; 80 };
83 81
84 struct mmc_clk_phase { <<
85 bool valid; <<
86 u16 in_deg; <<
87 u16 out_deg; <<
88 }; <<
89 <<
90 #define MMC_NUM_CLK_PHASES (MMC_TIMING_MMC_HS4 <<
91 struct mmc_clk_phase_map { <<
92 struct mmc_clk_phase phase[MMC_NUM_CLK <<
93 }; <<
94 <<
95 struct mmc_host; 82 struct mmc_host;
96 83
97 enum mmc_err_stat { <<
98 MMC_ERR_CMD_TIMEOUT, <<
99 MMC_ERR_CMD_CRC, <<
100 MMC_ERR_DAT_TIMEOUT, <<
101 MMC_ERR_DAT_CRC, <<
102 MMC_ERR_AUTO_CMD, <<
103 MMC_ERR_ADMA, <<
104 MMC_ERR_TUNING, <<
105 MMC_ERR_CMDQ_RED, <<
106 MMC_ERR_CMDQ_GCE, <<
107 MMC_ERR_CMDQ_ICCE, <<
108 MMC_ERR_REQ_TIMEOUT, <<
109 MMC_ERR_CMDQ_REQ_TIMEOUT, <<
110 MMC_ERR_ICE_CFG, <<
111 MMC_ERR_CTRL_TIMEOUT, <<
112 MMC_ERR_UNEXPECTED_IRQ, <<
113 MMC_ERR_MAX, <<
114 }; <<
115 <<
116 struct mmc_host_ops { 84 struct mmc_host_ops {
117 /* 85 /*
118 * It is optional for the host to impl 86 * It is optional for the host to implement pre_req and post_req in
119 * order to support double buffering o 87 * order to support double buffering of requests (prepare one
120 * request while another request is ac 88 * request while another request is active).
121 * pre_req() must always be followed b 89 * pre_req() must always be followed by a post_req().
122 * To undo a call made to pre_req(), c 90 * To undo a call made to pre_req(), call post_req() with
123 * a nonzero err condition. 91 * a nonzero err condition.
124 */ 92 */
125 void (*post_req)(struct mmc_host *h 93 void (*post_req)(struct mmc_host *host, struct mmc_request *req,
126 int err); 94 int err);
127 void (*pre_req)(struct mmc_host *ho 95 void (*pre_req)(struct mmc_host *host, struct mmc_request *req);
128 void (*request)(struct mmc_host *ho 96 void (*request)(struct mmc_host *host, struct mmc_request *req);
129 /* Submit one request to host in atomi <<
130 int (*request_atomic)(struct mmc_h <<
131 struct mmc_r <<
132 97
133 /* 98 /*
134 * Avoid calling the next three functi 99 * Avoid calling the next three functions too often or in a "fast
135 * path", since underlaying controller 100 * path", since underlaying controller might implement them in an
136 * expensive and/or slow way. Also not 101 * expensive and/or slow way. Also note that these functions might
137 * sleep, so don't call them in the at 102 * sleep, so don't call them in the atomic contexts!
138 */ 103 */
139 104
140 /* 105 /*
141 * Notes to the set_ios callback: 106 * Notes to the set_ios callback:
142 * ios->clock might be 0. For some con 107 * ios->clock might be 0. For some controllers, setting 0Hz
143 * as any other frequency works. Howev 108 * as any other frequency works. However, some controllers
144 * explicitly need to disable the cloc 109 * explicitly need to disable the clock. Otherwise e.g. voltage
145 * switching might fail because the SD 110 * switching might fail because the SDCLK is not really quiet.
146 */ 111 */
147 void (*set_ios)(struct mmc_host *ho 112 void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
148 113
149 /* 114 /*
150 * Return values for the get_ro callba 115 * Return values for the get_ro callback should be:
151 * 0 for a read/write card 116 * 0 for a read/write card
152 * 1 for a read-only card 117 * 1 for a read-only card
153 * -ENOSYS when not supported (equal 118 * -ENOSYS when not supported (equal to NULL callback)
154 * or a negative errno value when so 119 * or a negative errno value when something bad happened
155 */ 120 */
156 int (*get_ro)(struct mmc_host *hos 121 int (*get_ro)(struct mmc_host *host);
157 122
158 /* 123 /*
159 * Return values for the get_cd callba 124 * Return values for the get_cd callback should be:
160 * 0 for a absent card 125 * 0 for a absent card
161 * 1 for a present card 126 * 1 for a present card
162 * -ENOSYS when not supported (equal 127 * -ENOSYS when not supported (equal to NULL callback)
163 * or a negative errno value when so 128 * or a negative errno value when something bad happened
164 */ 129 */
165 int (*get_cd)(struct mmc_host *hos 130 int (*get_cd)(struct mmc_host *host);
166 131
167 void (*enable_sdio_irq)(struct mmc_ 132 void (*enable_sdio_irq)(struct mmc_host *host, int enable);
168 /* Mandatory callback when using MMC_C <<
169 void (*ack_sdio_irq)(struct mmc_hos 133 void (*ack_sdio_irq)(struct mmc_host *host);
170 134
171 /* optional callback for HC quirks */ 135 /* optional callback for HC quirks */
172 void (*init_card)(struct mmc_host * 136 void (*init_card)(struct mmc_host *host, struct mmc_card *card);
173 137
174 int (*start_signal_voltage_switch) 138 int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
175 139
176 /* Check if the card is pulling dat[0] !! 140 /* Check if the card is pulling dat[0:3] low */
177 int (*card_busy)(struct mmc_host * 141 int (*card_busy)(struct mmc_host *host);
178 142
179 /* The tuning command opcode value is 143 /* The tuning command opcode value is different for SD and eMMC cards */
180 int (*execute_tuning)(struct mmc_h 144 int (*execute_tuning)(struct mmc_host *host, u32 opcode);
181 145
182 /* Prepare HS400 target operating freq 146 /* Prepare HS400 target operating frequency depending host driver */
183 int (*prepare_hs400_tuning)(struct 147 int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
184 <<
185 /* Execute HS400 tuning depending host <<
186 int (*execute_hs400_tuning)(struct <<
187 <<
188 /* Optional callback to prepare for SD <<
189 int (*prepare_sd_hs_tuning)(struct <<
190 <<
191 /* Optional callback to execute SD hig <<
192 int (*execute_sd_hs_tuning)(struct <<
193 <<
194 /* Prepare switch to DDR during the HS <<
195 int (*hs400_prepare_ddr)(struct mm <<
196 <<
197 /* Prepare for switching from HS400 to <<
198 void (*hs400_downgrade)(struct mmc_ <<
199 <<
200 /* Complete selection of HS400 */ <<
201 void (*hs400_complete)(struct mmc_h <<
202 <<
203 /* Prepare enhanced strobe depending h 148 /* Prepare enhanced strobe depending host driver */
204 void (*hs400_enhanced_strobe)(struc 149 void (*hs400_enhanced_strobe)(struct mmc_host *host,
205 struc 150 struct mmc_ios *ios);
206 int (*select_drive_strength)(struc 151 int (*select_drive_strength)(struct mmc_card *card,
207 unsig 152 unsigned int max_dtr, int host_drv,
208 int c 153 int card_drv, int *drv_type);
209 /* Reset the eMMC card via RST_n */ !! 154 void (*hw_reset)(struct mmc_host *host);
210 void (*card_hw_reset)(struct mmc_ho <<
211 void (*card_event)(struct mmc_host 155 void (*card_event)(struct mmc_host *host);
212 156
213 /* 157 /*
214 * Optional callback to support contro 158 * Optional callback to support controllers with HW issues for multiple
215 * I/O. Returns the number of supporte 159 * I/O. Returns the number of supported blocks for the request.
216 */ 160 */
217 int (*multi_io_quirk)(struct mmc_c 161 int (*multi_io_quirk)(struct mmc_card *card,
218 unsigned int 162 unsigned int direction, int blk_size);
219 <<
220 /* Initialize an SD express card, mand <<
221 int (*init_sd_express)(struct mmc_ <<
222 }; 163 };
223 164
224 struct mmc_cqe_ops { !! 165 struct mmc_async_req {
225 /* Allocate resources, and make the CQ !! 166 /* active mmc request */
226 int (*cqe_enable)(struct mmc_host !! 167 struct mmc_request *mrq;
227 /* Free resources, and make the CQE no <<
228 void (*cqe_disable)(struct mmc_host <<
229 /* <<
230 * Issue a read, write or DCMD request <<
231 * effect of ->cqe_off(). <<
232 */ <<
233 int (*cqe_request)(struct mmc_host <<
234 /* Free resources (e.g. DMA mapping) a <<
235 void (*cqe_post_req)(struct mmc_hos <<
236 /* <<
237 * Prepare the CQE and host controller <<
238 * is no corresponding ->cqe_on(), ins <<
239 * to deal with that. <<
240 */ <<
241 void (*cqe_off)(struct mmc_host *ho <<
242 /* <<
243 * Wait for all CQE tasks to complete. <<
244 * becomes necessary. <<
245 */ <<
246 int (*cqe_wait_for_idle)(struct mm <<
247 /* <<
248 * Notify CQE that a request has timed <<
249 * completed or true if a timeout happ <<
250 * recovery is needed. <<
251 */ <<
252 bool (*cqe_timeout)(struct mmc_host <<
253 bool *recovery_ <<
254 /* <<
255 * Stop all CQE activity and prepare t <<
256 * accept recovery commands. <<
257 */ <<
258 void (*cqe_recovery_start)(struct m <<
259 /* 168 /*
260 * Clear the queue and call mmc_cqe_re !! 169 * Check error status of completed mmc request.
261 * Requests that errored will have the !! 170 * Returns 0 if success otherwise non zero.
262 * (data->error or cmd->error for DCMD <<
263 * will have zero data bytes transferr <<
264 */ 171 */
265 void (*cqe_recovery_finish)(struct !! 172 enum mmc_blk_status (*err_check)(struct mmc_card *, struct mmc_async_req *);
266 }; 173 };
267 174
268 /** 175 /**
269 * struct mmc_slot - MMC slot functions 176 * struct mmc_slot - MMC slot functions
270 * 177 *
271 * @cd_irq: MMC/SD-card slot hotpl 178 * @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL
272 * @handler_priv: MMC/SD-card slot conte 179 * @handler_priv: MMC/SD-card slot context
273 * 180 *
274 * Some MMC/SD host controllers implement slot 181 * Some MMC/SD host controllers implement slot-functions like card and
275 * write-protect detection natively. However, 182 * write-protect detection natively. However, a large number of controllers
276 * leave these functions to the CPU. This stru 183 * leave these functions to the CPU. This struct provides a hook to attach
277 * such slot-function drivers. 184 * such slot-function drivers.
278 */ 185 */
279 struct mmc_slot { 186 struct mmc_slot {
280 int cd_irq; 187 int cd_irq;
281 bool cd_wake_enabled; 188 bool cd_wake_enabled;
282 void *handler_priv; 189 void *handler_priv;
283 }; 190 };
284 191
>> 192 /**
>> 193 * mmc_context_info - synchronization details for mmc context
>> 194 * @is_done_rcv wake up reason was done request
>> 195 * @is_new_req wake up reason was new request
>> 196 * @is_waiting_last_req mmc context waiting for single running request
>> 197 * @wait wait queue
>> 198 */
>> 199 struct mmc_context_info {
>> 200 bool is_done_rcv;
>> 201 bool is_new_req;
>> 202 bool is_waiting_last_req;
>> 203 wait_queue_head_t wait;
>> 204 };
>> 205
285 struct regulator; 206 struct regulator;
286 struct mmc_pwrseq; 207 struct mmc_pwrseq;
287 208
288 struct mmc_supply { 209 struct mmc_supply {
289 struct regulator *vmmc; /* Car 210 struct regulator *vmmc; /* Card power supply */
290 struct regulator *vqmmc; /* Opt 211 struct regulator *vqmmc; /* Optional Vccq supply */
291 }; 212 };
292 213
293 struct mmc_ctx { <<
294 struct task_struct *task; <<
295 }; <<
296 <<
297 struct mmc_host { 214 struct mmc_host {
298 struct device *parent; 215 struct device *parent;
299 struct device class_dev; 216 struct device class_dev;
300 int index; 217 int index;
301 const struct mmc_host_ops *ops; 218 const struct mmc_host_ops *ops;
302 struct mmc_pwrseq *pwrseq; 219 struct mmc_pwrseq *pwrseq;
303 unsigned int f_min; 220 unsigned int f_min;
304 unsigned int f_max; 221 unsigned int f_max;
305 unsigned int f_init; 222 unsigned int f_init;
306 u32 ocr_avail; 223 u32 ocr_avail;
307 u32 ocr_avail_sdio 224 u32 ocr_avail_sdio; /* SDIO-specific OCR */
308 u32 ocr_avail_sd; 225 u32 ocr_avail_sd; /* SD-specific OCR */
309 u32 ocr_avail_mmc; 226 u32 ocr_avail_mmc; /* MMC-specific OCR */
310 struct wakeup_source *ws; !! 227 #ifdef CONFIG_PM_SLEEP
>> 228 struct notifier_block pm_notify;
>> 229 #endif
311 u32 max_current_33 230 u32 max_current_330;
312 u32 max_current_30 231 u32 max_current_300;
313 u32 max_current_18 232 u32 max_current_180;
314 233
315 #define MMC_VDD_165_195 0x00000080 234 #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
316 #define MMC_VDD_20_21 0x00000100 235 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
317 #define MMC_VDD_21_22 0x00000200 236 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
318 #define MMC_VDD_22_23 0x00000400 237 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
319 #define MMC_VDD_23_24 0x00000800 238 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
320 #define MMC_VDD_24_25 0x00001000 239 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
321 #define MMC_VDD_25_26 0x00002000 240 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
322 #define MMC_VDD_26_27 0x00004000 241 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
323 #define MMC_VDD_27_28 0x00008000 242 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
324 #define MMC_VDD_28_29 0x00010000 243 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
325 #define MMC_VDD_29_30 0x00020000 244 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
326 #define MMC_VDD_30_31 0x00040000 245 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
327 #define MMC_VDD_31_32 0x00080000 246 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
328 #define MMC_VDD_32_33 0x00100000 247 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
329 #define MMC_VDD_33_34 0x00200000 248 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
330 #define MMC_VDD_34_35 0x00400000 249 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
331 #define MMC_VDD_35_36 0x00800000 250 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
332 251
333 u32 caps; 252 u32 caps; /* Host capabilities */
334 253
335 #define MMC_CAP_4_BIT_DATA (1 << 0) 254 #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
336 #define MMC_CAP_MMC_HIGHSPEED (1 << 1) 255 #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
337 #define MMC_CAP_SD_HIGHSPEED (1 << 2) 256 #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */
338 #define MMC_CAP_SDIO_IRQ (1 << 3) 257 #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */
339 #define MMC_CAP_SPI (1 << 4) 258 #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */
340 #define MMC_CAP_NEEDS_POLL (1 << 5) 259 #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */
341 #define MMC_CAP_8_BIT_DATA (1 << 6) 260 #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */
342 #define MMC_CAP_AGGRESSIVE_PM (1 << 7) 261 #define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */
343 #define MMC_CAP_NONREMOVABLE (1 << 8) 262 #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */
344 #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) 263 #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */
>> 264 #define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */
345 #define MMC_CAP_3_3V_DDR (1 << 11) 265 #define MMC_CAP_3_3V_DDR (1 << 11) /* Host supports eMMC DDR 3.3V */
346 #define MMC_CAP_1_8V_DDR (1 << 12) 266 #define MMC_CAP_1_8V_DDR (1 << 12) /* Host supports eMMC DDR 1.8V */
347 #define MMC_CAP_1_2V_DDR (1 << 13) 267 #define MMC_CAP_1_2V_DDR (1 << 13) /* Host supports eMMC DDR 1.2V */
348 #define MMC_CAP_DDR (MMC_CAP_3_3V_ <<
349 MMC_CAP_1_2V_ <<
350 #define MMC_CAP_POWER_OFF_CARD (1 << 14) 268 #define MMC_CAP_POWER_OFF_CARD (1 << 14) /* Can power off after boot */
351 #define MMC_CAP_BUS_WIDTH_TEST (1 << 15) 269 #define MMC_CAP_BUS_WIDTH_TEST (1 << 15) /* CMD14/CMD19 bus width ok */
352 #define MMC_CAP_UHS_SDR12 (1 << 16) 270 #define MMC_CAP_UHS_SDR12 (1 << 16) /* Host supports UHS SDR12 mode */
353 #define MMC_CAP_UHS_SDR25 (1 << 17) 271 #define MMC_CAP_UHS_SDR25 (1 << 17) /* Host supports UHS SDR25 mode */
354 #define MMC_CAP_UHS_SDR50 (1 << 18) 272 #define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */
355 #define MMC_CAP_UHS_SDR104 (1 << 19) 273 #define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */
356 #define MMC_CAP_UHS_DDR50 (1 << 20) 274 #define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */
357 #define MMC_CAP_UHS (MMC_CAP_UHS_S !! 275 #define MMC_CAP_NO_BOUNCE_BUFF (1 << 21) /* Disable bounce buffers on host */
358 MMC_CAP_UHS_S <<
359 MMC_CAP_UHS_D <<
360 #define MMC_CAP_SYNC_RUNTIME_PM (1 << 21) <<
361 #define MMC_CAP_NEED_RSP_BUSY (1 << 22) <<
362 #define MMC_CAP_DRIVER_TYPE_A (1 << 23) 276 #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */
363 #define MMC_CAP_DRIVER_TYPE_C (1 << 24) 277 #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */
364 #define MMC_CAP_DRIVER_TYPE_D (1 << 25) 278 #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */
365 #define MMC_CAP_DONE_COMPLETE (1 << 27) <<
366 #define MMC_CAP_CD_WAKE (1 << 28) 279 #define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */
367 #define MMC_CAP_CMD_DURING_TFR (1 << 29) 280 #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */
368 #define MMC_CAP_CMD23 (1 << 30) 281 #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
369 #define MMC_CAP_HW_RESET (1 << 31) !! 282 #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */
370 283
371 u32 caps2; 284 u32 caps2; /* More host capabilities */
372 285
373 #define MMC_CAP2_BOOTPART_NOACC (1 << 0) 286 #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
374 #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) 287 #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */
375 #define MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND (1 <<
376 #define MMC_CAP2_HS200_1_8V_SDR (1 << 5) 288 #define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */
377 #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) 289 #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */
378 #define MMC_CAP2_HS200 (MMC_CAP2_HS20 290 #define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \
379 MMC_CAP2_HS20 291 MMC_CAP2_HS200_1_2V_SDR)
380 #define MMC_CAP2_SD_EXP (1 << 7) <<
381 #define MMC_CAP2_SD_EXP_1_2V (1 << 8) <<
382 #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) 292 #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */
383 #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) 293 #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */
>> 294 #define MMC_CAP2_PACKED_RD (1 << 12) /* Allow packed read */
>> 295 #define MMC_CAP2_PACKED_WR (1 << 13) /* Allow packed write */
>> 296 #define MMC_CAP2_PACKED_CMD (MMC_CAP2_PACKED_RD | \
>> 297 MMC_CAP2_PACKED_WR)
384 #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) 298 #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */
385 #define MMC_CAP2_HS400_1_8V (1 << 15) 299 #define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */
386 #define MMC_CAP2_HS400_1_2V (1 << 16) 300 #define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */
387 #define MMC_CAP2_HS400 (MMC_CAP2_HS40 301 #define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \
388 MMC_CAP2_HS40 302 MMC_CAP2_HS400_1_2V)
389 #define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS20 <<
390 #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS20 303 #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
391 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17) 304 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
392 #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) 305 #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */
393 #define MMC_CAP2_NO_SDIO (1 << 19) 306 #define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
394 #define MMC_CAP2_HS400_ES (1 << 20) 307 #define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
395 #define MMC_CAP2_NO_SD (1 << 21) 308 #define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */
396 #define MMC_CAP2_NO_MMC (1 << 22) 309 #define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */
397 #define MMC_CAP2_CQE (1 << 23) <<
398 #define MMC_CAP2_CQE_DCMD (1 << 24) <<
399 #define MMC_CAP2_AVOID_3_3V (1 << 25) <<
400 #define MMC_CAP2_MERGE_CAPABLE (1 << 26) <<
401 #ifdef CONFIG_MMC_CRYPTO <<
402 #define MMC_CAP2_CRYPTO (1 << 27) <<
403 #else <<
404 #define MMC_CAP2_CRYPTO 0 <<
405 #endif <<
406 #define MMC_CAP2_ALT_GPT_TEGRA (1 << 28) <<
407 <<
408 int fixed_drv_type <<
409 310
410 mmc_pm_flag_t pm_caps; 311 mmc_pm_flag_t pm_caps; /* supported pm features */
411 312
412 /* host specific block data */ 313 /* host specific block data */
413 unsigned int max_seg_size; !! 314 unsigned int max_seg_size; /* see blk_queue_max_segment_size */
414 unsigned short max_segs; !! 315 unsigned short max_segs; /* see blk_queue_max_segments */
415 unsigned short unused; 316 unsigned short unused;
416 unsigned int max_req_size; 317 unsigned int max_req_size; /* maximum number of bytes in one req */
417 unsigned int max_blk_size; 318 unsigned int max_blk_size; /* maximum size of one mmc block */
418 unsigned int max_blk_count; 319 unsigned int max_blk_count; /* maximum number of blocks in one req */
419 unsigned int max_busy_timeo 320 unsigned int max_busy_timeout; /* max busy timeout in ms */
420 321
421 /* private data */ 322 /* private data */
422 spinlock_t lock; 323 spinlock_t lock; /* lock for claim and bus ops */
423 324
424 struct mmc_ios ios; 325 struct mmc_ios ios; /* current io bus settings */
425 326
426 /* group bitfields together to minimiz 327 /* group bitfields together to minimize padding */
427 unsigned int use_spi_crc:1; 328 unsigned int use_spi_crc:1;
428 unsigned int claimed:1; 329 unsigned int claimed:1; /* host exclusively claimed */
429 unsigned int doing_init_tun !! 330 unsigned int bus_dead:1; /* bus has been released */
>> 331 #ifdef CONFIG_MMC_DEBUG
>> 332 unsigned int removed:1; /* host is being removed */
>> 333 #endif
430 unsigned int can_retune:1; 334 unsigned int can_retune:1; /* re-tuning can be used */
431 unsigned int doing_retune:1 335 unsigned int doing_retune:1; /* re-tuning in progress */
432 unsigned int retune_now:1; 336 unsigned int retune_now:1; /* do re-tuning at next req */
433 unsigned int retune_paused: 337 unsigned int retune_paused:1; /* re-tuning is temporarily disabled */
434 unsigned int retune_crc_dis <<
435 unsigned int can_dma_map_me <<
436 unsigned int vqmmc_enabled: <<
437 338
438 int rescan_disable 339 int rescan_disable; /* disable card detection */
439 int rescan_entered 340 int rescan_entered; /* used with nonremovable devices */
440 341
441 int need_retune; 342 int need_retune; /* re-tuning is needed */
442 int hold_retune; 343 int hold_retune; /* hold off re-tuning */
443 unsigned int retune_period; 344 unsigned int retune_period; /* re-tuning period in secs */
444 struct timer_list retune_timer; 345 struct timer_list retune_timer; /* for periodic re-tuning */
445 346
446 bool trigger_card_e 347 bool trigger_card_event; /* card_event necessary */
447 348
448 struct mmc_card *card; 349 struct mmc_card *card; /* device attached to this host */
449 350
450 wait_queue_head_t wq; 351 wait_queue_head_t wq;
451 struct mmc_ctx *claimer; !! 352 struct task_struct *claimer; /* task that has host claimed */
452 int claim_cnt; 353 int claim_cnt; /* "claim" nesting count */
453 struct mmc_ctx default_ctx; <<
454 354
455 struct delayed_work detect; 355 struct delayed_work detect;
456 int detect_change; 356 int detect_change; /* card detect flag */
457 struct mmc_slot slot; 357 struct mmc_slot slot;
458 358
459 const struct mmc_bus_ops *bus_ops; 359 const struct mmc_bus_ops *bus_ops; /* current bus driver */
>> 360 unsigned int bus_refs; /* reference counter */
460 361
461 unsigned int sdio_irqs; 362 unsigned int sdio_irqs;
462 struct task_struct *sdio_irq_thre 363 struct task_struct *sdio_irq_thread;
463 struct work_struct sdio_irq_work; !! 364 struct delayed_work sdio_irq_work;
464 bool sdio_irq_pendi 365 bool sdio_irq_pending;
465 atomic_t sdio_irq_threa 366 atomic_t sdio_irq_thread_abort;
466 367
467 mmc_pm_flag_t pm_flags; 368 mmc_pm_flag_t pm_flags; /* requested pm features */
468 369
469 struct led_trigger *led; 370 struct led_trigger *led; /* activity led */
470 371
471 #ifdef CONFIG_REGULATOR 372 #ifdef CONFIG_REGULATOR
472 bool regulator_enab 373 bool regulator_enabled; /* regulator state */
473 #endif 374 #endif
474 struct mmc_supply supply; 375 struct mmc_supply supply;
475 376
476 struct dentry *debugfs_root; 377 struct dentry *debugfs_root;
477 378
>> 379 struct mmc_async_req *areq; /* active async req */
>> 380 struct mmc_context_info context_info; /* async synchronization info */
>> 381
478 /* Ongoing data transfer that allows c 382 /* Ongoing data transfer that allows commands during transfer */
479 struct mmc_request *ongoing_mrq; 383 struct mmc_request *ongoing_mrq;
480 384
481 #ifdef CONFIG_FAIL_MMC_REQUEST 385 #ifdef CONFIG_FAIL_MMC_REQUEST
482 struct fault_attr fail_mmc_reque 386 struct fault_attr fail_mmc_request;
483 #endif 387 #endif
484 388
485 unsigned int actual_clock; 389 unsigned int actual_clock; /* Actual HC clock rate */
486 390
487 unsigned int slotno; /* use 391 unsigned int slotno; /* used for sdio acpi binding */
488 392
489 int dsr_req; 393 int dsr_req; /* DSR value is valid */
490 u32 dsr; /* opt 394 u32 dsr; /* optional driver stage (DSR) value */
491 395
492 /* Command Queue Engine (CQE) support !! 396 unsigned long private[0] ____cacheline_aligned;
493 const struct mmc_cqe_ops *cqe_ops; <<
494 void *cqe_private; <<
495 int cqe_qdepth; <<
496 bool cqe_enabled; <<
497 bool cqe_on; <<
498 <<
499 /* Inline encryption support */ <<
500 #ifdef CONFIG_MMC_CRYPTO <<
501 struct blk_crypto_profile crypto_profi <<
502 #endif <<
503 <<
504 /* Host Software Queue support */ <<
505 bool hsq_enabled; <<
506 int hsq_depth; <<
507 <<
508 u32 err_stats[MMC_ <<
509 unsigned long private[] ____ <<
510 }; 397 };
511 398
512 struct device_node; 399 struct device_node;
513 400
514 struct mmc_host *mmc_alloc_host(int extra, str 401 struct mmc_host *mmc_alloc_host(int extra, struct device *);
515 struct mmc_host *devm_mmc_alloc_host(struct de <<
516 int mmc_add_host(struct mmc_host *); 402 int mmc_add_host(struct mmc_host *);
517 void mmc_remove_host(struct mmc_host *); 403 void mmc_remove_host(struct mmc_host *);
518 void mmc_free_host(struct mmc_host *); 404 void mmc_free_host(struct mmc_host *);
519 void mmc_of_parse_clk_phase(struct device *dev <<
520 struct mmc_clk_pha <<
521 int mmc_of_parse(struct mmc_host *host); 405 int mmc_of_parse(struct mmc_host *host);
522 int mmc_of_parse_voltage(struct mmc_host *host !! 406 int mmc_of_parse_voltage(struct device_node *np, u32 *mask);
523 407
524 static inline void *mmc_priv(struct mmc_host * 408 static inline void *mmc_priv(struct mmc_host *host)
525 { 409 {
526 return (void *)host->private; 410 return (void *)host->private;
527 } 411 }
528 412
529 static inline struct mmc_host *mmc_from_priv(v <<
530 { <<
531 return container_of(priv, struct mmc_h <<
532 } <<
533 <<
534 #define mmc_host_is_spi(host) ((host)->caps 413 #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
535 414
536 #define mmc_dev(x) ((x)->parent) 415 #define mmc_dev(x) ((x)->parent)
537 #define mmc_classdev(x) (&(x)->class_dev) 416 #define mmc_classdev(x) (&(x)->class_dev)
538 #define mmc_hostname(x) (dev_name(&(x)->class_ 417 #define mmc_hostname(x) (dev_name(&(x)->class_dev))
539 418
>> 419 int mmc_power_save_host(struct mmc_host *host);
>> 420 int mmc_power_restore_host(struct mmc_host *host);
>> 421
540 void mmc_detect_change(struct mmc_host *, unsi 422 void mmc_detect_change(struct mmc_host *, unsigned long delay);
541 void mmc_request_done(struct mmc_host *, struc 423 void mmc_request_done(struct mmc_host *, struct mmc_request *);
542 void mmc_command_done(struct mmc_host *host, s 424 void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq);
543 425
544 void mmc_cqe_request_done(struct mmc_host *hos <<
545 <<
546 /* <<
547 * May be called from host driver's system/run <<
548 * to know if SDIO IRQs has been claimed. <<
549 */ <<
550 static inline bool sdio_irq_claimed(struct mmc <<
551 { <<
552 return host->sdio_irqs > 0; <<
553 } <<
554 <<
555 static inline void mmc_signal_sdio_irq(struct 426 static inline void mmc_signal_sdio_irq(struct mmc_host *host)
556 { 427 {
557 host->ops->enable_sdio_irq(host, 0); 428 host->ops->enable_sdio_irq(host, 0);
558 host->sdio_irq_pending = true; 429 host->sdio_irq_pending = true;
559 if (host->sdio_irq_thread) 430 if (host->sdio_irq_thread)
560 wake_up_process(host->sdio_irq 431 wake_up_process(host->sdio_irq_thread);
561 } 432 }
562 433
>> 434 void sdio_run_irqs(struct mmc_host *host);
563 void sdio_signal_irq(struct mmc_host *host); 435 void sdio_signal_irq(struct mmc_host *host);
564 436
565 #ifdef CONFIG_REGULATOR 437 #ifdef CONFIG_REGULATOR
>> 438 int mmc_regulator_get_ocrmask(struct regulator *supply);
566 int mmc_regulator_set_ocr(struct mmc_host *mmc 439 int mmc_regulator_set_ocr(struct mmc_host *mmc,
567 struct regulator *supp 440 struct regulator *supply,
568 unsigned short vdd_bit 441 unsigned short vdd_bit);
569 int mmc_regulator_set_vqmmc(struct mmc_host *m 442 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios);
570 #else 443 #else
>> 444 static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
>> 445 {
>> 446 return 0;
>> 447 }
>> 448
571 static inline int mmc_regulator_set_ocr(struct 449 static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
572 struct regula 450 struct regulator *supply,
573 unsigned shor 451 unsigned short vdd_bit)
574 { 452 {
575 return 0; 453 return 0;
576 } 454 }
577 455
578 static inline int mmc_regulator_set_vqmmc(stru 456 static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc,
579 stru 457 struct mmc_ios *ios)
580 { 458 {
581 return -EINVAL; 459 return -EINVAL;
582 } 460 }
583 #endif 461 #endif
584 462
>> 463 u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
585 int mmc_regulator_get_supply(struct mmc_host * 464 int mmc_regulator_get_supply(struct mmc_host *mmc);
586 int mmc_regulator_enable_vqmmc(struct mmc_host <<
587 void mmc_regulator_disable_vqmmc(struct mmc_ho <<
588 465
589 static inline int mmc_card_is_removable(struct 466 static inline int mmc_card_is_removable(struct mmc_host *host)
590 { 467 {
591 return !(host->caps & MMC_CAP_NONREMOV 468 return !(host->caps & MMC_CAP_NONREMOVABLE);
592 } 469 }
593 470
594 static inline int mmc_card_keep_power(struct m 471 static inline int mmc_card_keep_power(struct mmc_host *host)
595 { 472 {
596 return host->pm_flags & MMC_PM_KEEP_PO 473 return host->pm_flags & MMC_PM_KEEP_POWER;
597 } 474 }
598 475
599 static inline int mmc_card_wake_sdio_irq(struc 476 static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
600 { 477 {
601 return host->pm_flags & MMC_PM_WAKE_SD 478 return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
602 } 479 }
603 480
604 /* TODO: Move to private header */ 481 /* TODO: Move to private header */
605 static inline int mmc_card_hs(struct mmc_card 482 static inline int mmc_card_hs(struct mmc_card *card)
606 { 483 {
607 return card->host->ios.timing == MMC_T 484 return card->host->ios.timing == MMC_TIMING_SD_HS ||
608 card->host->ios.timing == MMC_ 485 card->host->ios.timing == MMC_TIMING_MMC_HS;
609 } 486 }
610 487
611 /* TODO: Move to private header */ 488 /* TODO: Move to private header */
612 static inline int mmc_card_uhs(struct mmc_card 489 static inline int mmc_card_uhs(struct mmc_card *card)
613 { 490 {
614 return card->host->ios.timing >= MMC_T 491 return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 &&
615 card->host->ios.timing <= MMC_ 492 card->host->ios.timing <= MMC_TIMING_UHS_DDR50;
616 } 493 }
617 494
618 void mmc_retune_timer_stop(struct mmc_host *ho 495 void mmc_retune_timer_stop(struct mmc_host *host);
619 496
620 static inline void mmc_retune_needed(struct mm 497 static inline void mmc_retune_needed(struct mmc_host *host)
621 { 498 {
622 if (host->can_retune) 499 if (host->can_retune)
623 host->need_retune = 1; 500 host->need_retune = 1;
624 } 501 }
625 502
626 static inline bool mmc_can_retune(struct mmc_h 503 static inline bool mmc_can_retune(struct mmc_host *host)
627 { 504 {
628 return host->can_retune == 1; 505 return host->can_retune == 1;
629 } 506 }
630 507
631 static inline bool mmc_doing_retune(struct mmc <<
632 { <<
633 return host->doing_retune == 1; <<
634 } <<
635 <<
636 static inline bool mmc_doing_tune(struct mmc_h <<
637 { <<
638 return host->doing_retune == 1 || host <<
639 } <<
640 <<
641 static inline enum dma_data_direction mmc_get_ 508 static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
642 { 509 {
643 return data->flags & MMC_DATA_WRITE ? 510 return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
644 } 511 }
645 512
646 static inline void mmc_debugfs_err_stats_inc(s <<
647 e <<
648 { <<
649 host->err_stats[stat] += 1; <<
650 } <<
651 <<
652 int mmc_sd_switch(struct mmc_card *card, bool <<
653 u8 value, u8 *resp); <<
654 int mmc_send_status(struct mmc_card *card, u32 <<
655 int mmc_send_tuning(struct mmc_host *host, u32 513 int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
656 int mmc_send_abort_tuning(struct mmc_host *hos !! 514 int mmc_abort_tuning(struct mmc_host *host, u32 opcode);
657 int mmc_get_ext_csd(struct mmc_card *card, u8 <<
658 515
659 #endif /* LINUX_MMC_HOST_H */ 516 #endif /* LINUX_MMC_HOST_H */
660 517
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