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1 : : /* SPDX-License-Identifier: GPL-2.0-only */
2 : : /*
3 : : * linux/include/linux/mmc/host.h
4 : : *
5 : : * Host driver specific definitions.
6 : : */
7 : : #ifndef LINUX_MMC_HOST_H
8 : : #define LINUX_MMC_HOST_H
9 : :
10 : : #include <linux/sched.h>
11 : : #include <linux/device.h>
12 : : #include <linux/fault-inject.h>
13 : :
14 : : #include <linux/mmc/core.h>
15 : : #include <linux/mmc/card.h>
16 : : #include <linux/mmc/pm.h>
17 : : #include <linux/dma-direction.h>
18 : :
19 : : struct mmc_ios {
20 : : unsigned int clock; /* clock rate */
21 : : unsigned short vdd;
22 : : unsigned int power_delay_ms; /* waiting for stable power */
23 : :
24 : : /* vdd stores the bit number of the selected voltage range from below. */
25 : :
26 : : unsigned char bus_mode; /* command output mode */
27 : :
28 : : #define MMC_BUSMODE_OPENDRAIN 1
29 : : #define MMC_BUSMODE_PUSHPULL 2
30 : :
31 : : unsigned char chip_select; /* SPI chip select */
32 : :
33 : : #define MMC_CS_DONTCARE 0
34 : : #define MMC_CS_HIGH 1
35 : : #define MMC_CS_LOW 2
36 : :
37 : : unsigned char power_mode; /* power supply mode */
38 : :
39 : : #define MMC_POWER_OFF 0
40 : : #define MMC_POWER_UP 1
41 : : #define MMC_POWER_ON 2
42 : : #define MMC_POWER_UNDEFINED 3
43 : :
44 : : unsigned char bus_width; /* data bus width */
45 : :
46 : : #define MMC_BUS_WIDTH_1 0
47 : : #define MMC_BUS_WIDTH_4 2
48 : : #define MMC_BUS_WIDTH_8 3
49 : :
50 : : unsigned char timing; /* timing specification used */
51 : :
52 : : #define MMC_TIMING_LEGACY 0
53 : : #define MMC_TIMING_MMC_HS 1
54 : : #define MMC_TIMING_SD_HS 2
55 : : #define MMC_TIMING_UHS_SDR12 3
56 : : #define MMC_TIMING_UHS_SDR25 4
57 : : #define MMC_TIMING_UHS_SDR50 5
58 : : #define MMC_TIMING_UHS_SDR104 6
59 : : #define MMC_TIMING_UHS_DDR50 7
60 : : #define MMC_TIMING_MMC_DDR52 8
61 : : #define MMC_TIMING_MMC_HS200 9
62 : : #define MMC_TIMING_MMC_HS400 10
63 : :
64 : : unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */
65 : :
66 : : #define MMC_SIGNAL_VOLTAGE_330 0
67 : : #define MMC_SIGNAL_VOLTAGE_180 1
68 : : #define MMC_SIGNAL_VOLTAGE_120 2
69 : :
70 : : unsigned char drv_type; /* driver type (A, B, C, D) */
71 : :
72 : : #define MMC_SET_DRIVER_TYPE_B 0
73 : : #define MMC_SET_DRIVER_TYPE_A 1
74 : : #define MMC_SET_DRIVER_TYPE_C 2
75 : : #define MMC_SET_DRIVER_TYPE_D 3
76 : :
77 : : bool enhanced_strobe; /* hs400es selection */
78 : : };
79 : :
80 : : struct mmc_host;
81 : :
82 : : struct mmc_host_ops {
83 : : /*
84 : : * It is optional for the host to implement pre_req and post_req in
85 : : * order to support double buffering of requests (prepare one
86 : : * request while another request is active).
87 : : * pre_req() must always be followed by a post_req().
88 : : * To undo a call made to pre_req(), call post_req() with
89 : : * a nonzero err condition.
90 : : */
91 : : void (*post_req)(struct mmc_host *host, struct mmc_request *req,
92 : : int err);
93 : : void (*pre_req)(struct mmc_host *host, struct mmc_request *req);
94 : : void (*request)(struct mmc_host *host, struct mmc_request *req);
95 : :
96 : : /*
97 : : * Avoid calling the next three functions too often or in a "fast
98 : : * path", since underlaying controller might implement them in an
99 : : * expensive and/or slow way. Also note that these functions might
100 : : * sleep, so don't call them in the atomic contexts!
101 : : */
102 : :
103 : : /*
104 : : * Notes to the set_ios callback:
105 : : * ios->clock might be 0. For some controllers, setting 0Hz
106 : : * as any other frequency works. However, some controllers
107 : : * explicitly need to disable the clock. Otherwise e.g. voltage
108 : : * switching might fail because the SDCLK is not really quiet.
109 : : */
110 : : void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
111 : :
112 : : /*
113 : : * Return values for the get_ro callback should be:
114 : : * 0 for a read/write card
115 : : * 1 for a read-only card
116 : : * -ENOSYS when not supported (equal to NULL callback)
117 : : * or a negative errno value when something bad happened
118 : : */
119 : : int (*get_ro)(struct mmc_host *host);
120 : :
121 : : /*
122 : : * Return values for the get_cd callback should be:
123 : : * 0 for a absent card
124 : : * 1 for a present card
125 : : * -ENOSYS when not supported (equal to NULL callback)
126 : : * or a negative errno value when something bad happened
127 : : */
128 : : int (*get_cd)(struct mmc_host *host);
129 : :
130 : : void (*enable_sdio_irq)(struct mmc_host *host, int enable);
131 : : /* Mandatory callback when using MMC_CAP2_SDIO_IRQ_NOTHREAD. */
132 : : void (*ack_sdio_irq)(struct mmc_host *host);
133 : :
134 : : /* optional callback for HC quirks */
135 : : void (*init_card)(struct mmc_host *host, struct mmc_card *card);
136 : :
137 : : int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
138 : :
139 : : /* Check if the card is pulling dat[0:3] low */
140 : : int (*card_busy)(struct mmc_host *host);
141 : :
142 : : /* The tuning command opcode value is different for SD and eMMC cards */
143 : : int (*execute_tuning)(struct mmc_host *host, u32 opcode);
144 : :
145 : : /* Prepare HS400 target operating frequency depending host driver */
146 : : int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
147 : :
148 : : /* Prepare switch to DDR during the HS400 init sequence */
149 : : int (*hs400_prepare_ddr)(struct mmc_host *host);
150 : :
151 : : /* Prepare for switching from HS400 to HS200 */
152 : : void (*hs400_downgrade)(struct mmc_host *host);
153 : :
154 : : /* Complete selection of HS400 */
155 : : void (*hs400_complete)(struct mmc_host *host);
156 : :
157 : : /* Prepare enhanced strobe depending host driver */
158 : : void (*hs400_enhanced_strobe)(struct mmc_host *host,
159 : : struct mmc_ios *ios);
160 : : int (*select_drive_strength)(struct mmc_card *card,
161 : : unsigned int max_dtr, int host_drv,
162 : : int card_drv, int *drv_type);
163 : : void (*hw_reset)(struct mmc_host *host);
164 : : void (*card_event)(struct mmc_host *host);
165 : :
166 : : /*
167 : : * Optional callback to support controllers with HW issues for multiple
168 : : * I/O. Returns the number of supported blocks for the request.
169 : : */
170 : : int (*multi_io_quirk)(struct mmc_card *card,
171 : : unsigned int direction, int blk_size);
172 : : };
173 : :
174 : : struct mmc_cqe_ops {
175 : : /* Allocate resources, and make the CQE operational */
176 : : int (*cqe_enable)(struct mmc_host *host, struct mmc_card *card);
177 : : /* Free resources, and make the CQE non-operational */
178 : : void (*cqe_disable)(struct mmc_host *host);
179 : : /*
180 : : * Issue a read, write or DCMD request to the CQE. Also deal with the
181 : : * effect of ->cqe_off().
182 : : */
183 : : int (*cqe_request)(struct mmc_host *host, struct mmc_request *mrq);
184 : : /* Free resources (e.g. DMA mapping) associated with the request */
185 : : void (*cqe_post_req)(struct mmc_host *host, struct mmc_request *mrq);
186 : : /*
187 : : * Prepare the CQE and host controller to accept non-CQ commands. There
188 : : * is no corresponding ->cqe_on(), instead ->cqe_request() is required
189 : : * to deal with that.
190 : : */
191 : : void (*cqe_off)(struct mmc_host *host);
192 : : /*
193 : : * Wait for all CQE tasks to complete. Return an error if recovery
194 : : * becomes necessary.
195 : : */
196 : : int (*cqe_wait_for_idle)(struct mmc_host *host);
197 : : /*
198 : : * Notify CQE that a request has timed out. Return false if the request
199 : : * completed or true if a timeout happened in which case indicate if
200 : : * recovery is needed.
201 : : */
202 : : bool (*cqe_timeout)(struct mmc_host *host, struct mmc_request *mrq,
203 : : bool *recovery_needed);
204 : : /*
205 : : * Stop all CQE activity and prepare the CQE and host controller to
206 : : * accept recovery commands.
207 : : */
208 : : void (*cqe_recovery_start)(struct mmc_host *host);
209 : : /*
210 : : * Clear the queue and call mmc_cqe_request_done() on all requests.
211 : : * Requests that errored will have the error set on the mmc_request
212 : : * (data->error or cmd->error for DCMD). Requests that did not error
213 : : * will have zero data bytes transferred.
214 : : */
215 : : void (*cqe_recovery_finish)(struct mmc_host *host);
216 : : };
217 : :
218 : : struct mmc_async_req {
219 : : /* active mmc request */
220 : : struct mmc_request *mrq;
221 : : /*
222 : : * Check error status of completed mmc request.
223 : : * Returns 0 if success otherwise non zero.
224 : : */
225 : : enum mmc_blk_status (*err_check)(struct mmc_card *, struct mmc_async_req *);
226 : : };
227 : :
228 : : /**
229 : : * struct mmc_slot - MMC slot functions
230 : : *
231 : : * @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL
232 : : * @handler_priv: MMC/SD-card slot context
233 : : *
234 : : * Some MMC/SD host controllers implement slot-functions like card and
235 : : * write-protect detection natively. However, a large number of controllers
236 : : * leave these functions to the CPU. This struct provides a hook to attach
237 : : * such slot-function drivers.
238 : : */
239 : : struct mmc_slot {
240 : : int cd_irq;
241 : : bool cd_wake_enabled;
242 : : void *handler_priv;
243 : : };
244 : :
245 : : /**
246 : : * mmc_context_info - synchronization details for mmc context
247 : : * @is_done_rcv wake up reason was done request
248 : : * @is_new_req wake up reason was new request
249 : : * @is_waiting_last_req mmc context waiting for single running request
250 : : * @wait wait queue
251 : : */
252 : : struct mmc_context_info {
253 : : bool is_done_rcv;
254 : : bool is_new_req;
255 : : bool is_waiting_last_req;
256 : : wait_queue_head_t wait;
257 : : };
258 : :
259 : : struct regulator;
260 : : struct mmc_pwrseq;
261 : :
262 : : struct mmc_supply {
263 : : struct regulator *vmmc; /* Card power supply */
264 : : struct regulator *vqmmc; /* Optional Vccq supply */
265 : : };
266 : :
267 : : struct mmc_ctx {
268 : : struct task_struct *task;
269 : : };
270 : :
271 : : struct mmc_host {
272 : : struct device *parent;
273 : : struct device class_dev;
274 : : int index;
275 : : const struct mmc_host_ops *ops;
276 : : struct mmc_pwrseq *pwrseq;
277 : : unsigned int f_min;
278 : : unsigned int f_max;
279 : : unsigned int f_init;
280 : : u32 ocr_avail;
281 : : u32 ocr_avail_sdio; /* SDIO-specific OCR */
282 : : u32 ocr_avail_sd; /* SD-specific OCR */
283 : : u32 ocr_avail_mmc; /* MMC-specific OCR */
284 : : #ifdef CONFIG_PM_SLEEP
285 : : struct notifier_block pm_notify;
286 : : #endif
287 : : u32 max_current_330;
288 : : u32 max_current_300;
289 : : u32 max_current_180;
290 : :
291 : : #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
292 : : #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
293 : : #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
294 : : #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
295 : : #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
296 : : #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
297 : : #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
298 : : #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
299 : : #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
300 : : #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
301 : : #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
302 : : #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
303 : : #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
304 : : #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
305 : : #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
306 : : #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
307 : : #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
308 : :
309 : : u32 caps; /* Host capabilities */
310 : :
311 : : #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
312 : : #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
313 : : #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */
314 : : #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */
315 : : #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */
316 : : #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */
317 : : #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */
318 : : #define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */
319 : : #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */
320 : : #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */
321 : : #define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */
322 : : #define MMC_CAP_3_3V_DDR (1 << 11) /* Host supports eMMC DDR 3.3V */
323 : : #define MMC_CAP_1_8V_DDR (1 << 12) /* Host supports eMMC DDR 1.8V */
324 : : #define MMC_CAP_1_2V_DDR (1 << 13) /* Host supports eMMC DDR 1.2V */
325 : : #define MMC_CAP_POWER_OFF_CARD (1 << 14) /* Can power off after boot */
326 : : #define MMC_CAP_BUS_WIDTH_TEST (1 << 15) /* CMD14/CMD19 bus width ok */
327 : : #define MMC_CAP_UHS_SDR12 (1 << 16) /* Host supports UHS SDR12 mode */
328 : : #define MMC_CAP_UHS_SDR25 (1 << 17) /* Host supports UHS SDR25 mode */
329 : : #define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */
330 : : #define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */
331 : : #define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */
332 : : #define MMC_CAP_UHS (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | \
333 : : MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | \
334 : : MMC_CAP_UHS_DDR50)
335 : : #define MMC_CAP_SYNC_RUNTIME_PM (1 << 21) /* Synced runtime PM suspends. */
336 : : #define MMC_CAP_NEED_RSP_BUSY (1 << 22) /* Commands with R1B can't use R1. */
337 : : #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */
338 : : #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */
339 : : #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */
340 : : #define MMC_CAP_DONE_COMPLETE (1 << 27) /* RW reqs can be completed within mmc_request_done() */
341 : : #define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */
342 : : #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */
343 : : #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
344 : : #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */
345 : :
346 : : u32 caps2; /* More host capabilities */
347 : :
348 : : #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
349 : : #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */
350 : : #define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */
351 : : #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */
352 : : #define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \
353 : : MMC_CAP2_HS200_1_2V_SDR)
354 : : #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */
355 : : #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */
356 : : #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */
357 : : #define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */
358 : : #define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */
359 : : #define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \
360 : : MMC_CAP2_HS400_1_2V)
361 : : #define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V)
362 : : #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
363 : : #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
364 : : #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */
365 : : #define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
366 : : #define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
367 : : #define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */
368 : : #define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */
369 : : #define MMC_CAP2_CQE (1 << 23) /* Has eMMC command queue engine */
370 : : #define MMC_CAP2_CQE_DCMD (1 << 24) /* CQE can issue a direct command */
371 : : #define MMC_CAP2_AVOID_3_3V (1 << 25) /* Host must negotiate down from 3.3V */
372 : : #define MMC_CAP2_MERGE_CAPABLE (1 << 26) /* Host can merge a segment over the segment size */
373 : :
374 : : int fixed_drv_type; /* fixed driver type for non-removable media */
375 : :
376 : : mmc_pm_flag_t pm_caps; /* supported pm features */
377 : :
378 : : /* host specific block data */
379 : : unsigned int max_seg_size; /* see blk_queue_max_segment_size */
380 : : unsigned short max_segs; /* see blk_queue_max_segments */
381 : : unsigned short unused;
382 : : unsigned int max_req_size; /* maximum number of bytes in one req */
383 : : unsigned int max_blk_size; /* maximum size of one mmc block */
384 : : unsigned int max_blk_count; /* maximum number of blocks in one req */
385 : : unsigned int max_busy_timeout; /* max busy timeout in ms */
386 : :
387 : : /* private data */
388 : : spinlock_t lock; /* lock for claim and bus ops */
389 : :
390 : : struct mmc_ios ios; /* current io bus settings */
391 : :
392 : : /* group bitfields together to minimize padding */
393 : : unsigned int use_spi_crc:1;
394 : : unsigned int claimed:1; /* host exclusively claimed */
395 : : unsigned int bus_dead:1; /* bus has been released */
396 : : unsigned int can_retune:1; /* re-tuning can be used */
397 : : unsigned int doing_retune:1; /* re-tuning in progress */
398 : : unsigned int retune_now:1; /* do re-tuning at next req */
399 : : unsigned int retune_paused:1; /* re-tuning is temporarily disabled */
400 : : unsigned int use_blk_mq:1; /* use blk-mq */
401 : : unsigned int retune_crc_disable:1; /* don't trigger retune upon crc */
402 : : unsigned int can_dma_map_merge:1; /* merging can be used */
403 : :
404 : : int rescan_disable; /* disable card detection */
405 : : int rescan_entered; /* used with nonremovable devices */
406 : :
407 : : int need_retune; /* re-tuning is needed */
408 : : int hold_retune; /* hold off re-tuning */
409 : : unsigned int retune_period; /* re-tuning period in secs */
410 : : struct timer_list retune_timer; /* for periodic re-tuning */
411 : :
412 : : bool trigger_card_event; /* card_event necessary */
413 : :
414 : : struct mmc_card *card; /* device attached to this host */
415 : :
416 : : wait_queue_head_t wq;
417 : : struct mmc_ctx *claimer; /* context that has host claimed */
418 : : int claim_cnt; /* "claim" nesting count */
419 : : struct mmc_ctx default_ctx; /* default context */
420 : :
421 : : struct delayed_work detect;
422 : : int detect_change; /* card detect flag */
423 : : struct mmc_slot slot;
424 : :
425 : : const struct mmc_bus_ops *bus_ops; /* current bus driver */
426 : : unsigned int bus_refs; /* reference counter */
427 : :
428 : : unsigned int sdio_irqs;
429 : : struct task_struct *sdio_irq_thread;
430 : : struct delayed_work sdio_irq_work;
431 : : bool sdio_irq_pending;
432 : : atomic_t sdio_irq_thread_abort;
433 : :
434 : : mmc_pm_flag_t pm_flags; /* requested pm features */
435 : :
436 : : struct led_trigger *led; /* activity led */
437 : :
438 : : #ifdef CONFIG_REGULATOR
439 : : bool regulator_enabled; /* regulator state */
440 : : #endif
441 : : struct mmc_supply supply;
442 : :
443 : : struct dentry *debugfs_root;
444 : :
445 : : /* Ongoing data transfer that allows commands during transfer */
446 : : struct mmc_request *ongoing_mrq;
447 : :
448 : : #ifdef CONFIG_FAIL_MMC_REQUEST
449 : : struct fault_attr fail_mmc_request;
450 : : #endif
451 : :
452 : : unsigned int actual_clock; /* Actual HC clock rate */
453 : :
454 : : unsigned int slotno; /* used for sdio acpi binding */
455 : :
456 : : int dsr_req; /* DSR value is valid */
457 : : u32 dsr; /* optional driver stage (DSR) value */
458 : :
459 : : /* Command Queue Engine (CQE) support */
460 : : const struct mmc_cqe_ops *cqe_ops;
461 : : void *cqe_private;
462 : : int cqe_qdepth;
463 : : bool cqe_enabled;
464 : : bool cqe_on;
465 : :
466 : : unsigned long private[0] ____cacheline_aligned;
467 : : };
468 : :
469 : : struct device_node;
470 : :
471 : : struct mmc_host *mmc_alloc_host(int extra, struct device *);
472 : : int mmc_add_host(struct mmc_host *);
473 : : void mmc_remove_host(struct mmc_host *);
474 : : void mmc_free_host(struct mmc_host *);
475 : : int mmc_of_parse(struct mmc_host *host);
476 : : int mmc_of_parse_voltage(struct device_node *np, u32 *mask);
477 : :
478 : : static inline void *mmc_priv(struct mmc_host *host)
479 : : {
480 : 1244845 : return (void *)host->private;
481 : : }
482 : :
483 : : static inline struct mmc_host *mmc_from_priv(void *priv)
484 : : {
485 : : return container_of(priv, struct mmc_host, private);
486 : : }
487 : :
488 : : #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
489 : :
490 : : #define mmc_dev(x) ((x)->parent)
491 : : #define mmc_classdev(x) (&(x)->class_dev)
492 : : #define mmc_hostname(x) (dev_name(&(x)->class_dev))
493 : :
494 : : void mmc_detect_change(struct mmc_host *, unsigned long delay);
495 : : void mmc_request_done(struct mmc_host *, struct mmc_request *);
496 : : void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq);
497 : :
498 : : void mmc_cqe_request_done(struct mmc_host *host, struct mmc_request *mrq);
499 : :
500 : : /*
501 : : * May be called from host driver's system/runtime suspend/resume callbacks,
502 : : * to know if SDIO IRQs has been claimed.
503 : : */
504 : : static inline bool sdio_irq_claimed(struct mmc_host *host)
505 : : {
506 : 0 : return host->sdio_irqs > 0;
507 : : }
508 : :
509 : : static inline void mmc_signal_sdio_irq(struct mmc_host *host)
510 : : {
511 : : host->ops->enable_sdio_irq(host, 0);
512 : : host->sdio_irq_pending = true;
513 : : if (host->sdio_irq_thread)
514 : : wake_up_process(host->sdio_irq_thread);
515 : : }
516 : :
517 : : void sdio_signal_irq(struct mmc_host *host);
518 : :
519 : : #ifdef CONFIG_REGULATOR
520 : : int mmc_regulator_set_ocr(struct mmc_host *mmc,
521 : : struct regulator *supply,
522 : : unsigned short vdd_bit);
523 : : int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios);
524 : : #else
525 : : static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
526 : : struct regulator *supply,
527 : : unsigned short vdd_bit)
528 : : {
529 : : return 0;
530 : : }
531 : :
532 : : static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc,
533 : : struct mmc_ios *ios)
534 : : {
535 : : return -EINVAL;
536 : : }
537 : : #endif
538 : :
539 : : int mmc_regulator_get_supply(struct mmc_host *mmc);
540 : :
541 : : static inline int mmc_card_is_removable(struct mmc_host *host)
542 : : {
543 : 22936 : return !(host->caps & MMC_CAP_NONREMOVABLE);
544 : : }
545 : :
546 : : static inline int mmc_card_keep_power(struct mmc_host *host)
547 : : {
548 : 0 : return host->pm_flags & MMC_PM_KEEP_POWER;
549 : : }
550 : :
551 : : static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
552 : : {
553 : 0 : return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
554 : : }
555 : :
556 : : /* TODO: Move to private header */
557 : : static inline int mmc_card_hs(struct mmc_card *card)
558 : : {
559 : 414 : return card->host->ios.timing == MMC_TIMING_SD_HS ||
560 : : card->host->ios.timing == MMC_TIMING_MMC_HS;
561 : : }
562 : :
563 : : /* TODO: Move to private header */
564 : : static inline int mmc_card_uhs(struct mmc_card *card)
565 : : {
566 : 207 : return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 &&
567 : : card->host->ios.timing <= MMC_TIMING_UHS_DDR50;
568 : : }
569 : :
570 : : void mmc_retune_timer_stop(struct mmc_host *host);
571 : :
572 : : static inline void mmc_retune_needed(struct mmc_host *host)
573 : : {
574 [ # # # # ]: 0 : if (host->can_retune)
575 : 0 : host->need_retune = 1;
576 : : }
577 : :
578 : : static inline bool mmc_can_retune(struct mmc_host *host)
579 : : {
580 : : return host->can_retune == 1;
581 : : }
582 : :
583 : : static inline bool mmc_doing_retune(struct mmc_host *host)
584 : : {
585 : : return host->doing_retune == 1;
586 : : }
587 : :
588 : : static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
589 : : {
590 [ # # # # : 0 : return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
# # # # #
# # # #
# ]
591 : : }
592 : :
593 : : int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
594 : : int mmc_abort_tuning(struct mmc_host *host, u32 opcode);
595 : :
596 : : #endif /* LINUX_MMC_HOST_H */
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