Lines Matching full:host
30 #include <linux/mmc/host.h>
42 #include "host.h"
50 /* The max erase timeout, used when host->max_busy_timeout isn't specified */
82 static void mmc_should_fail_request(struct mmc_host *host, in mmc_should_fail_request() argument
97 !should_fail(&host->fail_mmc_request, data->blksz * data->blocks)) in mmc_should_fail_request()
106 static inline void mmc_should_fail_request(struct mmc_host *host, in mmc_should_fail_request() argument
119 void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq) in mmc_command_done() argument
127 mmc_hostname(host), mrq->cmd->opcode); in mmc_command_done()
133 * @host: MMC host which completed request
139 void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq) in mmc_request_done() argument
146 !host->retune_crc_disable && in mmc_request_done()
150 mmc_retune_needed(host); in mmc_request_done()
152 if (err && cmd->retries && mmc_host_is_spi(host)) { in mmc_request_done()
157 if (host->ongoing_mrq == mrq) in mmc_request_done()
158 host->ongoing_mrq = NULL; in mmc_request_done()
162 trace_mmc_request_done(host, mrq); in mmc_request_done()
173 if (!err || !cmd->retries || mmc_card_removed(host->card)) { in mmc_request_done()
174 mmc_should_fail_request(host, mrq); in mmc_request_done()
176 if (!host->ongoing_mrq) in mmc_request_done()
177 led_trigger_event(host->led, LED_OFF); in mmc_request_done()
181 mmc_hostname(host), mrq->sbc->opcode, in mmc_request_done()
188 mmc_hostname(host), cmd->opcode, err, in mmc_request_done()
194 mmc_hostname(host), in mmc_request_done()
200 mmc_hostname(host), mrq->stop->opcode, in mmc_request_done()
216 static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) in __mmc_start_request() argument
220 /* Assumes host controller has been runtime resumed by mmc_claim_host */ in __mmc_start_request()
221 err = mmc_retune(host); in __mmc_start_request()
224 mmc_request_done(host, mrq); in __mmc_start_request()
234 host->ops->card_busy) { in __mmc_start_request()
237 while (host->ops->card_busy(host) && --tries) in __mmc_start_request()
242 mmc_request_done(host, mrq); in __mmc_start_request()
248 host->ongoing_mrq = mrq; in __mmc_start_request()
256 trace_mmc_request_start(host, mrq); in __mmc_start_request()
258 if (host->cqe_on) in __mmc_start_request()
259 host->cqe_ops->cqe_off(host); in __mmc_start_request()
261 host->ops->request(host, mrq); in __mmc_start_request()
264 static void mmc_mrq_pr_debug(struct mmc_host *host, struct mmc_request *mrq, in mmc_mrq_pr_debug() argument
269 mmc_hostname(host), mrq->sbc->opcode, in mmc_mrq_pr_debug()
275 mmc_hostname(host), cqe ? "CQE direct " : "", in mmc_mrq_pr_debug()
279 mmc_hostname(host), mrq->tag, mrq->data->blk_addr); in mmc_mrq_pr_debug()
285 mmc_hostname(host), mrq->data->blksz, in mmc_mrq_pr_debug()
293 mmc_hostname(host), mrq->stop->opcode, in mmc_mrq_pr_debug()
298 static int mmc_mrq_prep(struct mmc_host *host, struct mmc_request *mrq) in mmc_mrq_prep() argument
313 if (mrq->data->blksz > host->max_blk_size || in mmc_mrq_prep()
314 mrq->data->blocks > host->max_blk_count || in mmc_mrq_prep()
315 mrq->data->blocks * mrq->data->blksz > host->max_req_size) in mmc_mrq_prep()
335 int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) in mmc_start_request() argument
341 mmc_retune_hold(host); in mmc_start_request()
343 if (mmc_card_removed(host->card)) in mmc_start_request()
346 mmc_mrq_pr_debug(host, mrq, false); in mmc_start_request()
348 WARN_ON(!host->claimed); in mmc_start_request()
350 err = mmc_mrq_prep(host, mrq); in mmc_start_request()
354 led_trigger_event(host->led, LED_FULL); in mmc_start_request()
355 __mmc_start_request(host, mrq); in mmc_start_request()
366 static inline void mmc_wait_ongoing_tfr_cmd(struct mmc_host *host) in mmc_wait_ongoing_tfr_cmd() argument
368 struct mmc_request *ongoing_mrq = READ_ONCE(host->ongoing_mrq); in mmc_wait_ongoing_tfr_cmd()
378 static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq) in __mmc_start_req() argument
382 mmc_wait_ongoing_tfr_cmd(host); in __mmc_start_req()
387 err = mmc_start_request(host, mrq); in __mmc_start_req()
397 void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq) in mmc_wait_for_req_done() argument
407 mmc_card_removed(host->card)) in mmc_wait_for_req_done()
410 mmc_retune_recheck(host); in mmc_wait_for_req_done()
413 mmc_hostname(host), cmd->opcode, cmd->error); in mmc_wait_for_req_done()
416 __mmc_start_request(host, mrq); in mmc_wait_for_req_done()
419 mmc_retune_release(host); in mmc_wait_for_req_done()
425 * @host: MMC host to start the request
431 int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq) in mmc_cqe_start_req() argument
441 err = mmc_retune(host); in mmc_cqe_start_req()
445 mrq->host = host; in mmc_cqe_start_req()
447 mmc_mrq_pr_debug(host, mrq, true); in mmc_cqe_start_req()
449 err = mmc_mrq_prep(host, mrq); in mmc_cqe_start_req()
453 err = host->cqe_ops->cqe_request(host, mrq); in mmc_cqe_start_req()
457 trace_mmc_request_start(host, mrq); in mmc_cqe_start_req()
464 mmc_hostname(host), mrq->cmd->opcode, err); in mmc_cqe_start_req()
467 mmc_hostname(host), mrq->tag, err); in mmc_cqe_start_req()
475 * @host: MMC host which completed request
481 void mmc_cqe_request_done(struct mmc_host *host, struct mmc_request *mrq) in mmc_cqe_request_done() argument
483 mmc_should_fail_request(host, mrq); in mmc_cqe_request_done()
488 mmc_retune_needed(host); in mmc_cqe_request_done()
490 trace_mmc_request_done(host, mrq); in mmc_cqe_request_done()
494 mmc_hostname(host), mrq->cmd->opcode, mrq->cmd->error); in mmc_cqe_request_done()
497 mmc_hostname(host), mrq->tag); in mmc_cqe_request_done()
502 mmc_hostname(host), in mmc_cqe_request_done()
512 * @host: MMC host
515 void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq) in mmc_cqe_post_req() argument
517 if (host->cqe_ops->cqe_post_req) in mmc_cqe_post_req()
518 host->cqe_ops->cqe_post_req(host, mrq); in mmc_cqe_post_req()
527 * @host: MMC host to recover
534 int mmc_cqe_recovery(struct mmc_host *host) in mmc_cqe_recovery() argument
539 mmc_retune_hold_now(host); in mmc_cqe_recovery()
545 pr_warn("%s: running CQE recovery\n", mmc_hostname(host)); in mmc_cqe_recovery()
547 host->cqe_ops->cqe_recovery_start(host); in mmc_cqe_recovery()
554 mmc_wait_for_cmd(host, &cmd, 0); in mmc_cqe_recovery()
562 err = mmc_wait_for_cmd(host, &cmd, 0); in mmc_cqe_recovery()
564 host->cqe_ops->cqe_recovery_finish(host); in mmc_cqe_recovery()
566 mmc_retune_release(host); in mmc_cqe_recovery()
574 * @host: MMC host
584 bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq) in mmc_is_req_done() argument
592 * @host: MMC host to start command
595 * Start a new MMC custom command request for a host, and wait
602 void mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq) in mmc_wait_for_req() argument
604 __mmc_start_req(host, mrq); in mmc_wait_for_req()
607 mmc_wait_for_req_done(host, mrq); in mmc_wait_for_req()
613 * @host: MMC host to start command
617 * Start a new MMC command for a host, and wait for the command
621 int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries) in mmc_wait_for_cmd() argument
625 WARN_ON(!host->claimed); in mmc_wait_for_cmd()
633 mmc_wait_for_req(host, &mrq); in mmc_wait_for_cmd()
683 if (card->host->ios.clock) in mmc_set_data_timeout()
685 (card->host->ios.clock / 1000); in mmc_set_data_timeout()
730 if (mmc_host_is_spi(card->host)) { in mmc_set_data_timeout()
743 * Allow claiming an already claimed host if the context is the same or there is
746 static inline bool mmc_ctx_matches(struct mmc_host *host, struct mmc_ctx *ctx, in mmc_ctx_matches() argument
749 return host->claimer == ctx || in mmc_ctx_matches()
750 (!ctx && task && host->claimer->task == task); in mmc_ctx_matches()
753 static inline void mmc_ctx_set_claimer(struct mmc_host *host, in mmc_ctx_set_claimer() argument
757 if (!host->claimer) { in mmc_ctx_set_claimer()
759 host->claimer = ctx; in mmc_ctx_set_claimer()
761 host->claimer = &host->default_ctx; in mmc_ctx_set_claimer()
764 host->claimer->task = task; in mmc_ctx_set_claimer()
768 * __mmc_claim_host - exclusively claim a host
769 * @host: mmc host to claim
770 * @ctx: context that claims the host or NULL in which case the default
774 * Claim a host for a set of operations. If @abort is non null and
779 int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx, in __mmc_claim_host() argument
790 add_wait_queue(&host->wq, &wait); in __mmc_claim_host()
791 spin_lock_irqsave(&host->lock, flags); in __mmc_claim_host()
795 if (stop || !host->claimed || mmc_ctx_matches(host, ctx, task)) in __mmc_claim_host()
797 spin_unlock_irqrestore(&host->lock, flags); in __mmc_claim_host()
799 spin_lock_irqsave(&host->lock, flags); in __mmc_claim_host()
803 host->claimed = 1; in __mmc_claim_host()
804 mmc_ctx_set_claimer(host, ctx, task); in __mmc_claim_host()
805 host->claim_cnt += 1; in __mmc_claim_host()
806 if (host->claim_cnt == 1) in __mmc_claim_host()
809 wake_up(&host->wq); in __mmc_claim_host()
810 spin_unlock_irqrestore(&host->lock, flags); in __mmc_claim_host()
811 remove_wait_queue(&host->wq, &wait); in __mmc_claim_host()
814 pm_runtime_get_sync(mmc_dev(host)); in __mmc_claim_host()
821 * mmc_release_host - release a host
822 * @host: mmc host to release
824 * Release a MMC host, allowing others to claim the host
827 void mmc_release_host(struct mmc_host *host) in mmc_release_host() argument
831 WARN_ON(!host->claimed); in mmc_release_host()
833 spin_lock_irqsave(&host->lock, flags); in mmc_release_host()
834 if (--host->claim_cnt) { in mmc_release_host()
836 spin_unlock_irqrestore(&host->lock, flags); in mmc_release_host()
838 host->claimed = 0; in mmc_release_host()
839 host->claimer->task = NULL; in mmc_release_host()
840 host->claimer = NULL; in mmc_release_host()
841 spin_unlock_irqrestore(&host->lock, flags); in mmc_release_host()
842 wake_up(&host->wq); in mmc_release_host()
843 pm_runtime_mark_last_busy(mmc_dev(host)); in mmc_release_host()
844 if (host->caps & MMC_CAP_SYNC_RUNTIME_PM) in mmc_release_host()
845 pm_runtime_put_sync_suspend(mmc_dev(host)); in mmc_release_host()
847 pm_runtime_put_autosuspend(mmc_dev(host)); in mmc_release_host()
854 * card device and also claims the host.
859 __mmc_claim_host(card->host, ctx, NULL); in mmc_get_card()
864 * This is a helper function, which releases the host and drops the runtime
869 struct mmc_host *host = card->host; in mmc_put_card() local
871 WARN_ON(ctx && host->claimer != ctx); in mmc_put_card()
873 mmc_release_host(host); in mmc_put_card()
880 * Internal function that does the actual ios call to the host driver,
883 static inline void mmc_set_ios(struct mmc_host *host) in mmc_set_ios() argument
885 struct mmc_ios *ios = &host->ios; in mmc_set_ios()
889 mmc_hostname(host), ios->clock, ios->bus_mode, in mmc_set_ios()
893 host->ops->set_ios(host, ios); in mmc_set_ios()
897 * Control chip select pin on a host.
899 void mmc_set_chip_select(struct mmc_host *host, int mode) in mmc_set_chip_select() argument
901 host->ios.chip_select = mode; in mmc_set_chip_select()
902 mmc_set_ios(host); in mmc_set_chip_select()
906 * Sets the host clock to the highest possible frequency that
909 void mmc_set_clock(struct mmc_host *host, unsigned int hz) in mmc_set_clock() argument
911 WARN_ON(hz && hz < host->f_min); in mmc_set_clock()
913 if (hz > host->f_max) in mmc_set_clock()
914 hz = host->f_max; in mmc_set_clock()
916 host->ios.clock = hz; in mmc_set_clock()
917 mmc_set_ios(host); in mmc_set_clock()
922 struct mmc_host *host = card->host; in mmc_execute_tuning() local
926 if (!host->ops->execute_tuning) in mmc_execute_tuning()
929 if (host->cqe_on) in mmc_execute_tuning()
930 host->cqe_ops->cqe_off(host); in mmc_execute_tuning()
937 err = host->ops->execute_tuning(host, opcode); in mmc_execute_tuning()
939 mmc_retune_clear(host); in mmc_execute_tuning()
940 mmc_retune_enable(host); in mmc_execute_tuning()
945 if (!host->detect_change) { in mmc_execute_tuning()
947 mmc_hostname(host), err); in mmc_execute_tuning()
948 mmc_debugfs_err_stats_inc(host, MMC_ERR_TUNING); in mmc_execute_tuning()
955 * Change the bus mode (open drain/push-pull) of a host.
957 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode) in mmc_set_bus_mode() argument
959 host->ios.bus_mode = mode; in mmc_set_bus_mode()
960 mmc_set_ios(host); in mmc_set_bus_mode()
964 * Change data bus width of a host.
966 void mmc_set_bus_width(struct mmc_host *host, unsigned int width) in mmc_set_bus_width() argument
968 host->ios.bus_width = width; in mmc_set_bus_width()
969 mmc_set_ios(host); in mmc_set_bus_width()
975 void mmc_set_initial_state(struct mmc_host *host) in mmc_set_initial_state() argument
977 if (host->cqe_on) in mmc_set_initial_state()
978 host->cqe_ops->cqe_off(host); in mmc_set_initial_state()
980 mmc_retune_disable(host); in mmc_set_initial_state()
982 if (mmc_host_is_spi(host)) in mmc_set_initial_state()
983 host->ios.chip_select = MMC_CS_HIGH; in mmc_set_initial_state()
985 host->ios.chip_select = MMC_CS_DONTCARE; in mmc_set_initial_state()
986 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL; in mmc_set_initial_state()
987 host->ios.bus_width = MMC_BUS_WIDTH_1; in mmc_set_initial_state()
988 host->ios.timing = MMC_TIMING_LEGACY; in mmc_set_initial_state()
989 host->ios.drv_type = 0; in mmc_set_initial_state()
990 host->ios.enhanced_strobe = false; in mmc_set_initial_state()
996 if ((host->caps2 & MMC_CAP2_HS400_ES) && in mmc_set_initial_state()
997 host->ops->hs400_enhanced_strobe) in mmc_set_initial_state()
998 host->ops->hs400_enhanced_strobe(host, &host->ios); in mmc_set_initial_state()
1000 mmc_set_ios(host); in mmc_set_initial_state()
1002 mmc_crypto_set_initial_state(host); in mmc_set_initial_state()
1090 struct device_node *mmc_of_find_child_device(struct mmc_host *host, in mmc_of_find_child_device() argument
1095 if (!host->parent || !host->parent->of_node) in mmc_of_find_child_device()
1098 for_each_child_of_node(host->parent->of_node, node) { in mmc_of_find_child_device()
1110 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr) in mmc_select_voltage() argument
1119 dev_warn(mmc_dev(host), in mmc_select_voltage()
1124 ocr &= host->ocr_avail; in mmc_select_voltage()
1126 dev_warn(mmc_dev(host), "no support for card's volts\n"); in mmc_select_voltage()
1130 if (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) { in mmc_select_voltage()
1133 mmc_power_cycle(host, ocr); in mmc_select_voltage()
1143 if (bit != host->ios.vdd) in mmc_select_voltage()
1144 dev_warn(mmc_dev(host), "exceeding card's volts\n"); in mmc_select_voltage()
1150 int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage) in mmc_set_signal_voltage() argument
1153 int old_signal_voltage = host->ios.signal_voltage; in mmc_set_signal_voltage()
1155 host->ios.signal_voltage = signal_voltage; in mmc_set_signal_voltage()
1156 if (host->ops->start_signal_voltage_switch) in mmc_set_signal_voltage()
1157 err = host->ops->start_signal_voltage_switch(host, &host->ios); in mmc_set_signal_voltage()
1160 host->ios.signal_voltage = old_signal_voltage; in mmc_set_signal_voltage()
1166 void mmc_set_initial_signal_voltage(struct mmc_host *host) in mmc_set_initial_signal_voltage() argument
1169 if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330)) in mmc_set_initial_signal_voltage()
1170 dev_dbg(mmc_dev(host), "Initial signal voltage of 3.3v\n"); in mmc_set_initial_signal_voltage()
1171 else if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180)) in mmc_set_initial_signal_voltage()
1172 dev_dbg(mmc_dev(host), "Initial signal voltage of 1.8v\n"); in mmc_set_initial_signal_voltage()
1173 else if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120)) in mmc_set_initial_signal_voltage()
1174 dev_dbg(mmc_dev(host), "Initial signal voltage of 1.2v\n"); in mmc_set_initial_signal_voltage()
1177 int mmc_host_set_uhs_voltage(struct mmc_host *host) in mmc_host_set_uhs_voltage() argument
1185 clock = host->ios.clock; in mmc_host_set_uhs_voltage()
1186 host->ios.clock = 0; in mmc_host_set_uhs_voltage()
1187 mmc_set_ios(host); in mmc_host_set_uhs_voltage()
1189 if (mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180)) in mmc_host_set_uhs_voltage()
1194 host->ios.clock = clock; in mmc_host_set_uhs_voltage()
1195 mmc_set_ios(host); in mmc_host_set_uhs_voltage()
1200 int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr) in mmc_set_uhs_voltage() argument
1209 if (!host->ops->start_signal_voltage_switch) in mmc_set_uhs_voltage()
1211 if (!host->ops->card_busy) in mmc_set_uhs_voltage()
1213 mmc_hostname(host)); in mmc_set_uhs_voltage()
1219 err = mmc_wait_for_cmd(host, &cmd, 0); in mmc_set_uhs_voltage()
1223 if (!mmc_host_is_spi(host) && (cmd.resp[0] & R1_ERROR)) in mmc_set_uhs_voltage()
1231 if (host->ops->card_busy && !host->ops->card_busy(host)) { in mmc_set_uhs_voltage()
1236 if (mmc_host_set_uhs_voltage(host)) { in mmc_set_uhs_voltage()
1252 if (host->ops->card_busy && host->ops->card_busy(host)) in mmc_set_uhs_voltage()
1258 "power cycling card\n", mmc_hostname(host)); in mmc_set_uhs_voltage()
1259 mmc_power_cycle(host, ocr); in mmc_set_uhs_voltage()
1266 * Select timing parameters for host.
1268 void mmc_set_timing(struct mmc_host *host, unsigned int timing) in mmc_set_timing() argument
1270 host->ios.timing = timing; in mmc_set_timing()
1271 mmc_set_ios(host); in mmc_set_timing()
1275 * Select appropriate driver type for host.
1277 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type) in mmc_set_driver_type() argument
1279 host->ios.drv_type = drv_type; in mmc_set_driver_type()
1280 mmc_set_ios(host); in mmc_set_driver_type()
1286 struct mmc_host *host = card->host; in mmc_select_drive_strength() local
1291 if (!host->ops->select_drive_strength) in mmc_select_drive_strength()
1295 if (host->caps & MMC_CAP_DRIVER_TYPE_A) in mmc_select_drive_strength()
1298 if (host->caps & MMC_CAP_DRIVER_TYPE_C) in mmc_select_drive_strength()
1301 if (host->caps & MMC_CAP_DRIVER_TYPE_D) in mmc_select_drive_strength()
1310 return host->ops->select_drive_strength(card, max_dtr, in mmc_select_drive_strength()
1324 * If a host does all the power sequencing itself, ignore the
1327 void mmc_power_up(struct mmc_host *host, u32 ocr) in mmc_power_up() argument
1329 if (host->ios.power_mode == MMC_POWER_ON) in mmc_power_up()
1332 mmc_pwrseq_pre_power_on(host); in mmc_power_up()
1334 host->ios.vdd = fls(ocr) - 1; in mmc_power_up()
1335 host->ios.power_mode = MMC_POWER_UP; in mmc_power_up()
1337 mmc_set_initial_state(host); in mmc_power_up()
1339 mmc_set_initial_signal_voltage(host); in mmc_power_up()
1345 mmc_delay(host->ios.power_delay_ms); in mmc_power_up()
1347 mmc_pwrseq_post_power_on(host); in mmc_power_up()
1349 host->ios.clock = host->f_init; in mmc_power_up()
1351 host->ios.power_mode = MMC_POWER_ON; in mmc_power_up()
1352 mmc_set_ios(host); in mmc_power_up()
1358 mmc_delay(host->ios.power_delay_ms); in mmc_power_up()
1361 void mmc_power_off(struct mmc_host *host) in mmc_power_off() argument
1363 if (host->ios.power_mode == MMC_POWER_OFF) in mmc_power_off()
1366 mmc_pwrseq_power_off(host); in mmc_power_off()
1368 host->ios.clock = 0; in mmc_power_off()
1369 host->ios.vdd = 0; in mmc_power_off()
1371 host->ios.power_mode = MMC_POWER_OFF; in mmc_power_off()
1373 mmc_set_initial_state(host); in mmc_power_off()
1383 void mmc_power_cycle(struct mmc_host *host, u32 ocr) in mmc_power_cycle() argument
1385 mmc_power_off(host); in mmc_power_cycle()
1388 mmc_power_up(host, ocr); in mmc_power_cycle()
1392 * Assign a mmc bus handler to a host. Only one bus handler may control a
1393 * host at any given time.
1395 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops) in mmc_attach_bus() argument
1397 host->bus_ops = ops; in mmc_attach_bus()
1401 * Remove the current bus handler from a host.
1403 void mmc_detach_bus(struct mmc_host *host) in mmc_detach_bus() argument
1405 host->bus_ops = NULL; in mmc_detach_bus()
1408 void _mmc_detect_change(struct mmc_host *host, unsigned long delay, bool cd_irq) in _mmc_detect_change() argument
1415 if (cd_irq && !(host->caps & MMC_CAP_NEEDS_POLL)) in _mmc_detect_change()
1416 __pm_wakeup_event(host->ws, 5000); in _mmc_detect_change()
1418 host->detect_change = 1; in _mmc_detect_change()
1419 mmc_schedule_delayed_work(&host->detect, delay); in _mmc_detect_change()
1424 * @host: host which changed state.
1432 void mmc_detect_change(struct mmc_host *host, unsigned long delay) in mmc_detect_change() argument
1434 _mmc_detect_change(host, delay, true); in mmc_detect_change()
1523 (card->host->ios.clock / 1000); in mmc_mmc_erase_timeout()
1549 if (mmc_host_is_spi(card->host) && erase_timeout < 1000) in mmc_mmc_erase_timeout()
1604 mmc_retune_hold(card->host); in mmc_do_erase()
1642 err = mmc_wait_for_cmd(card->host, &cmd, 0); in mmc_do_erase()
1657 err = mmc_wait_for_cmd(card->host, &cmd, 0); in mmc_do_erase()
1669 use_r1b_resp = mmc_prepare_busy_cmd(card->host, &cmd, busy_timeout); in mmc_do_erase()
1671 err = mmc_wait_for_cmd(card->host, &cmd, 0); in mmc_do_erase()
1679 if (mmc_host_is_spi(card->host)) in mmc_do_erase()
1686 if ((card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) in mmc_do_erase()
1693 mmc_retune_release(card->host); in mmc_do_erase()
1752 * Caller must claim host before calling this function.
1875 struct mmc_host *host = card->host; in mmc_do_calc_max_discard() local
1878 unsigned int max_busy_timeout = host->max_busy_timeout ? in mmc_do_calc_max_discard()
1879 host->max_busy_timeout : MMC_ERASE_TIMEOUT_MS; in mmc_do_calc_max_discard()
1893 * We should not only use 'host->max_busy_timeout' as the limitation in mmc_do_calc_max_discard()
1899 * matter what size of 'host->max_busy_timeout', but if the in mmc_do_calc_max_discard()
1900 * 'host->max_busy_timeout' is large enough for more discard sectors, in mmc_do_calc_max_discard()
1902 * get a balance value. In cases when the 'host->max_busy_timeout' in mmc_do_calc_max_discard()
1952 struct mmc_host *host = card->host; in mmc_calc_max_discard() local
1972 mmc_hostname(host), max_discard, host->max_busy_timeout ? in mmc_calc_max_discard()
1973 host->max_busy_timeout : MMC_ERASE_TIMEOUT_MS); in mmc_calc_max_discard()
1995 return mmc_wait_for_cmd(card->host, &cmd, 5); in mmc_set_blocklen()
1999 static void mmc_hw_reset_for_init(struct mmc_host *host) in mmc_hw_reset_for_init() argument
2001 mmc_pwrseq_reset(host); in mmc_hw_reset_for_init()
2003 if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->card_hw_reset) in mmc_hw_reset_for_init()
2005 host->ops->card_hw_reset(host); in mmc_hw_reset_for_init()
2013 * block layer or card drivers. You cannot use it in host drivers (struct
2020 struct mmc_host *host = card->host; in mmc_hw_reset() local
2023 ret = host->bus_ops->hw_reset(host); in mmc_hw_reset()
2026 mmc_hostname(host), ret); in mmc_hw_reset()
2034 struct mmc_host *host = card->host; in mmc_sw_reset() local
2037 if (!host->bus_ops->sw_reset) in mmc_sw_reset()
2040 ret = host->bus_ops->sw_reset(host); in mmc_sw_reset()
2043 mmc_hostname(host), ret); in mmc_sw_reset()
2049 static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq) in mmc_rescan_try_freq() argument
2051 host->f_init = freq; in mmc_rescan_try_freq()
2054 mmc_hostname(host), __func__, host->f_init); in mmc_rescan_try_freq()
2056 mmc_power_up(host, host->ocr_avail); in mmc_rescan_try_freq()
2062 mmc_hw_reset_for_init(host); in mmc_rescan_try_freq()
2070 if (!(host->caps2 & MMC_CAP2_NO_SDIO)) in mmc_rescan_try_freq()
2071 sdio_reset(host); in mmc_rescan_try_freq()
2073 mmc_go_idle(host); in mmc_rescan_try_freq()
2075 if (!(host->caps2 & MMC_CAP2_NO_SD)) { in mmc_rescan_try_freq()
2076 if (mmc_send_if_cond_pcie(host, host->ocr_avail)) in mmc_rescan_try_freq()
2078 if (mmc_card_sd_express(host)) in mmc_rescan_try_freq()
2083 if (!(host->caps2 & MMC_CAP2_NO_SDIO)) in mmc_rescan_try_freq()
2084 if (!mmc_attach_sdio(host)) in mmc_rescan_try_freq()
2087 if (!(host->caps2 & MMC_CAP2_NO_SD)) in mmc_rescan_try_freq()
2088 if (!mmc_attach_sd(host)) in mmc_rescan_try_freq()
2091 if (!(host->caps2 & MMC_CAP2_NO_MMC)) in mmc_rescan_try_freq()
2092 if (!mmc_attach_mmc(host)) in mmc_rescan_try_freq()
2096 mmc_power_off(host); in mmc_rescan_try_freq()
2100 int _mmc_detect_card_removed(struct mmc_host *host) in _mmc_detect_card_removed() argument
2104 if (!host->card || mmc_card_removed(host->card)) in _mmc_detect_card_removed()
2107 ret = host->bus_ops->alive(host); in _mmc_detect_card_removed()
2116 if (!ret && host->ops->get_cd && !host->ops->get_cd(host)) { in _mmc_detect_card_removed()
2117 mmc_detect_change(host, msecs_to_jiffies(200)); in _mmc_detect_card_removed()
2118 pr_debug("%s: card removed too slowly\n", mmc_hostname(host)); in _mmc_detect_card_removed()
2122 mmc_card_set_removed(host->card); in _mmc_detect_card_removed()
2123 pr_debug("%s: card remove detected\n", mmc_hostname(host)); in _mmc_detect_card_removed()
2129 int mmc_detect_card_removed(struct mmc_host *host) in mmc_detect_card_removed() argument
2131 struct mmc_card *card = host->card; in mmc_detect_card_removed()
2134 WARN_ON(!host->claimed); in mmc_detect_card_removed()
2139 if (!mmc_card_is_removable(host)) in mmc_detect_card_removed()
2145 * detect a change or host requires polling to provide card detection. in mmc_detect_card_removed()
2147 if (!host->detect_change && !(host->caps & MMC_CAP_NEEDS_POLL)) in mmc_detect_card_removed()
2150 host->detect_change = 0; in mmc_detect_card_removed()
2152 ret = _mmc_detect_card_removed(host); in mmc_detect_card_removed()
2153 if (ret && (host->caps & MMC_CAP_NEEDS_POLL)) { in mmc_detect_card_removed()
2158 cancel_delayed_work(&host->detect); in mmc_detect_card_removed()
2159 _mmc_detect_change(host, 0, false); in mmc_detect_card_removed()
2171 if ((!(card->host->caps2 & MMC_CAP2_ALT_GPT_TEGRA))) in mmc_card_alternative_gpt_sector()
2178 mmc_card_is_removable(card->host)) in mmc_card_alternative_gpt_sector()
2204 struct mmc_host *host = in mmc_rescan() local
2208 if (host->rescan_disable) in mmc_rescan()
2212 if (!mmc_card_is_removable(host) && host->rescan_entered) in mmc_rescan()
2214 host->rescan_entered = 1; in mmc_rescan()
2216 if (host->trigger_card_event && host->ops->card_event) { in mmc_rescan()
2217 mmc_claim_host(host); in mmc_rescan()
2218 host->ops->card_event(host); in mmc_rescan()
2219 mmc_release_host(host); in mmc_rescan()
2220 host->trigger_card_event = false; in mmc_rescan()
2224 if (host->bus_ops) in mmc_rescan()
2225 host->bus_ops->detect(host); in mmc_rescan()
2227 host->detect_change = 0; in mmc_rescan()
2230 if (host->bus_ops != NULL) in mmc_rescan()
2233 mmc_claim_host(host); in mmc_rescan()
2234 if (mmc_card_is_removable(host) && host->ops->get_cd && in mmc_rescan()
2235 host->ops->get_cd(host) == 0) { in mmc_rescan()
2236 mmc_power_off(host); in mmc_rescan()
2237 mmc_release_host(host); in mmc_rescan()
2242 if (mmc_card_sd_express(host)) { in mmc_rescan()
2243 mmc_release_host(host); in mmc_rescan()
2249 if (freq > host->f_max) { in mmc_rescan()
2252 freq = host->f_max; in mmc_rescan()
2254 if (!mmc_rescan_try_freq(host, max(freq, host->f_min))) in mmc_rescan()
2256 if (freqs[i] <= host->f_min) in mmc_rescan()
2261 if (!mmc_card_is_removable(host) && !host->bus_ops) in mmc_rescan()
2263 mmc_hostname(host)); in mmc_rescan()
2269 host->err_stats[MMC_ERR_CMD_TIMEOUT] = 0; in mmc_rescan()
2270 mmc_release_host(host); in mmc_rescan()
2273 if (host->caps & MMC_CAP_NEEDS_POLL) in mmc_rescan()
2274 mmc_schedule_delayed_work(&host->detect, HZ); in mmc_rescan()
2277 void mmc_start_host(struct mmc_host *host) in mmc_start_host() argument
2279 host->f_init = max(min(freqs[0], host->f_max), host->f_min); in mmc_start_host()
2280 host->rescan_disable = 0; in mmc_start_host()
2282 if (!(host->caps2 & MMC_CAP2_NO_PRESCAN_POWERUP)) { in mmc_start_host()
2283 mmc_claim_host(host); in mmc_start_host()
2284 mmc_power_up(host, host->ocr_avail); in mmc_start_host()
2285 mmc_release_host(host); in mmc_start_host()
2288 mmc_gpiod_request_cd_irq(host); in mmc_start_host()
2289 _mmc_detect_change(host, 0, false); in mmc_start_host()
2292 void __mmc_stop_host(struct mmc_host *host) in __mmc_stop_host() argument
2294 if (host->slot.cd_irq >= 0) { in __mmc_stop_host()
2295 mmc_gpio_set_cd_wake(host, false); in __mmc_stop_host()
2296 disable_irq(host->slot.cd_irq); in __mmc_stop_host()
2299 host->rescan_disable = 1; in __mmc_stop_host()
2300 cancel_delayed_work_sync(&host->detect); in __mmc_stop_host()
2303 void mmc_stop_host(struct mmc_host *host) in mmc_stop_host() argument
2305 __mmc_stop_host(host); in mmc_stop_host()
2308 host->pm_flags = 0; in mmc_stop_host()
2310 if (host->bus_ops) { in mmc_stop_host()
2311 /* Calling bus_ops->remove() with a claimed host can deadlock */ in mmc_stop_host()
2312 host->bus_ops->remove(host); in mmc_stop_host()
2313 mmc_claim_host(host); in mmc_stop_host()
2314 mmc_detach_bus(host); in mmc_stop_host()
2315 mmc_power_off(host); in mmc_stop_host()
2316 mmc_release_host(host); in mmc_stop_host()
2320 mmc_claim_host(host); in mmc_stop_host()
2321 mmc_power_off(host); in mmc_stop_host()
2322 mmc_release_host(host); in mmc_stop_host()