diff options
Diffstat (limited to 'drivers')
58 files changed, 3841 insertions, 1494 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index d02e7c0f5bfd..2abea876c0a0 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -237,6 +237,7 @@ config GENERIC_CPU_AUTOPROBE config SOC_BUS bool + select GLOB source "drivers/base/regmap/Kconfig" diff --git a/drivers/base/soc.c b/drivers/base/soc.c index b63f23e6ad61..dc26e5949a32 100644 --- a/drivers/base/soc.c +++ b/drivers/base/soc.c @@ -13,6 +13,7 @@ #include <linux/spinlock.h> #include <linux/sys_soc.h> #include <linux/err.h> +#include <linux/glob.h> static DEFINE_IDA(soc_ida); @@ -113,6 +114,12 @@ struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr struct soc_device *soc_dev; int ret; + if (!soc_bus_type.p) { + ret = bus_register(&soc_bus_type); + if (ret) + goto out1; + } + soc_dev = kzalloc(sizeof(*soc_dev), GFP_KERNEL); if (!soc_dev) { ret = -ENOMEM; @@ -156,6 +163,78 @@ void soc_device_unregister(struct soc_device *soc_dev) static int __init soc_bus_register(void) { + if (soc_bus_type.p) + return 0; + return bus_register(&soc_bus_type); } core_initcall(soc_bus_register); + +static int soc_device_match_one(struct device *dev, void *arg) +{ + struct soc_device *soc_dev = container_of(dev, struct soc_device, dev); + const struct soc_device_attribute *match = arg; + + if (match->machine && + (!soc_dev->attr->machine || + !glob_match(match->machine, soc_dev->attr->machine))) + return 0; + + if (match->family && + (!soc_dev->attr->family || + !glob_match(match->family, soc_dev->attr->family))) + return 0; + + if (match->revision && + (!soc_dev->attr->revision || + !glob_match(match->revision, soc_dev->attr->revision))) + return 0; + + if (match->soc_id && + (!soc_dev->attr->soc_id || + !glob_match(match->soc_id, soc_dev->attr->soc_id))) + return 0; + + return 1; +} + +/* + * soc_device_match - identify the SoC in the machine + * @matches: zero-terminated array of possible matches + * + * returns the first matching entry of the argument array, or NULL + * if none of them match. + * + * This function is meant as a helper in place of of_match_node() + * in cases where either no device tree is available or the information + * in a device node is insufficient to identify a particular variant + * by its compatible strings or other properties. For new devices, + * the DT binding should always provide unique compatible strings + * that allow the use of of_match_node() instead. + * + * The calling function can use the .data entry of the + * soc_device_attribute to pass a structure or function pointer for + * each entry. + */ +const struct soc_device_attribute *soc_device_match( + const struct soc_device_attribute *matches) +{ + int ret = 0; + + if (!matches) + return NULL; + + while (!ret) { + if (!(matches->machine || matches->family || + matches->revision || matches->soc_id)) + break; + ret = bus_for_each_dev(&soc_bus_type, NULL, (void *)matches, + soc_device_match_one); + if (!ret) + matches++; + else + return matches; + } + return NULL; +} +EXPORT_SYMBOL_GPL(soc_device_match); diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 709a872ed484..646d1a1fa6ca 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -66,9 +66,6 @@ MODULE_ALIAS("mmc:block"); #define mmc_req_rel_wr(req) ((req->cmd_flags & REQ_FUA) && \ (rq_data_dir(req) == WRITE)) -#define PACKED_CMD_VER 0x01 -#define PACKED_CMD_WR 0x02 - static DEFINE_MUTEX(block_mutex); /* @@ -102,7 +99,6 @@ struct mmc_blk_data { unsigned int flags; #define MMC_BLK_CMD23 (1 << 0) /* Can do SET_BLOCK_COUNT for multiblock */ #define MMC_BLK_REL_WR (1 << 1) /* MMC Reliable write support */ -#define MMC_BLK_PACKED_CMD (1 << 2) /* MMC packed command support */ unsigned int usage; unsigned int read_only; @@ -126,12 +122,6 @@ struct mmc_blk_data { static DEFINE_MUTEX(open_lock); -enum { - MMC_PACKED_NR_IDX = -1, - MMC_PACKED_NR_ZERO, - MMC_PACKED_NR_SINGLE, -}; - module_param(perdev_minors, int, 0444); MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device"); @@ -139,17 +129,6 @@ static inline int mmc_blk_part_switch(struct mmc_card *card, struct mmc_blk_data *md); static int get_card_status(struct mmc_card *card, u32 *status, int retries); -static inline void mmc_blk_clear_packed(struct mmc_queue_req *mqrq) -{ - struct mmc_packed *packed = mqrq->packed; - - mqrq->cmd_type = MMC_PACKED_NONE; - packed->nr_entries = MMC_PACKED_NR_ZERO; - packed->idx_failure = MMC_PACKED_NR_IDX; - packed->retries = 0; - packed->blocks = 0; -} - static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk) { struct mmc_blk_data *md; @@ -854,7 +833,7 @@ static int get_card_status(struct mmc_card *card, u32 *status, int retries) } static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms, - bool hw_busy_detect, struct request *req, int *gen_err) + bool hw_busy_detect, struct request *req, bool *gen_err) { unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); int err = 0; @@ -871,7 +850,7 @@ static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms, if (status & R1_ERROR) { pr_err("%s: %s: error sending status cmd, status %#x\n", req->rq_disk->disk_name, __func__, status); - *gen_err = 1; + *gen_err = true; } /* We may rely on the host hw to handle busy detection.*/ @@ -902,7 +881,7 @@ static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms, } static int send_stop(struct mmc_card *card, unsigned int timeout_ms, - struct request *req, int *gen_err, u32 *stop_status) + struct request *req, bool *gen_err, u32 *stop_status) { struct mmc_host *host = card->host; struct mmc_command cmd = {0}; @@ -940,7 +919,7 @@ static int send_stop(struct mmc_card *card, unsigned int timeout_ms, (*stop_status & R1_ERROR)) { pr_err("%s: %s: general error sending stop command, resp %#x\n", req->rq_disk->disk_name, __func__, *stop_status); - *gen_err = 1; + *gen_err = true; } return card_busy_detect(card, timeout_ms, use_r1b_resp, req, gen_err); @@ -1014,7 +993,7 @@ static int mmc_blk_cmd_error(struct request *req, const char *name, int error, * Otherwise we don't understand what happened, so abort. */ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, - struct mmc_blk_request *brq, int *ecc_err, int *gen_err) + struct mmc_blk_request *brq, bool *ecc_err, bool *gen_err) { bool prev_cmd_status_valid = true; u32 status, stop_status = 0; @@ -1053,7 +1032,7 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, if ((status & R1_CARD_ECC_FAILED) || (brq->stop.resp[0] & R1_CARD_ECC_FAILED) || (brq->cmd.resp[0] & R1_CARD_ECC_FAILED)) - *ecc_err = 1; + *ecc_err = true; /* Flag General errors */ if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) @@ -1062,7 +1041,7 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, pr_err("%s: %s: general error sending stop or status command, stop cmd response %#x, card status %#x\n", req->rq_disk->disk_name, __func__, brq->stop.resp[0], status); - *gen_err = 1; + *gen_err = true; } /* @@ -1085,7 +1064,7 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, } if (stop_status & R1_CARD_ECC_FAILED) - *ecc_err = 1; + *ecc_err = true; } /* Check for set block count errors */ @@ -1154,7 +1133,7 @@ static inline void mmc_blk_reset_success(struct mmc_blk_data *md, int type) int mmc_access_rpmb(struct mmc_queue *mq) { - struct mmc_blk_data *md = mq->data; + struct mmc_blk_data *md = mq->blkdata; /* * If this is a RPMB partition access, return ture */ @@ -1166,7 +1145,7 @@ int mmc_access_rpmb(struct mmc_queue *mq) static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req) { - struct mmc_blk_data *md = mq->data; + struct mmc_blk_data *md = mq->blkdata; struct mmc_card *card = md->queue.card; unsigned int from, nr, arg; int err = 0, type = MMC_BLK_DISCARD; @@ -1210,7 +1189,7 @@ out: static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq, struct request *req) { - struct mmc_blk_data *md = mq->data; + struct mmc_blk_data *md = mq->blkdata; struct mmc_card *card = md->queue.card; unsigned int from, nr, arg; int err = 0, type = MMC_BLK_SECDISCARD; @@ -1276,7 +1255,7 @@ out: static int mmc_blk_issue_flush(struct mmc_queue *mq, struct request *req) { - struct mmc_blk_data *md = mq->data; + struct mmc_blk_data *md = mq->blkdata; struct mmc_card *card = md->queue.card; int ret = 0; @@ -1320,15 +1299,16 @@ static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq, R1_CC_ERROR | /* Card controller error */ \ R1_ERROR) /* General/unknown error */ -static int mmc_blk_err_check(struct mmc_card *card, - struct mmc_async_req *areq) +static enum mmc_blk_status mmc_blk_err_check(struct mmc_card *card, + struct mmc_async_req *areq) { struct mmc_queue_req *mq_mrq = container_of(areq, struct mmc_queue_req, mmc_active); struct mmc_blk_request *brq = &mq_mrq->brq; struct request *req = mq_mrq->req; int need_retune = card->host->need_retune; - int ecc_err = 0, gen_err = 0; + bool ecc_err = false; + bool gen_err = false; /* * sbc.error indicates a problem with the set block count @@ -1378,7 +1358,7 @@ static int mmc_blk_err_check(struct mmc_card *card, pr_err("%s: %s: general error sending stop command, stop cmd response %#x\n", req->rq_disk->disk_name, __func__, brq->stop.resp[0]); - gen_err = 1; + gen_err = true; } err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req, @@ -1419,67 +1399,12 @@ static int mmc_blk_err_check(struct mmc_card *card, if (!brq->data.bytes_xfered) return MMC_BLK_RETRY; - if (mmc_packed_cmd(mq_mrq->cmd_type)) { - if (unlikely(brq->data.blocks << 9 != brq->data.bytes_xfered)) - return MMC_BLK_PARTIAL; - else - return MMC_BLK_SUCCESS; - } - if (blk_rq_bytes(req) != brq->data.bytes_xfered) return MMC_BLK_PARTIAL; return MMC_BLK_SUCCESS; } -static int mmc_blk_packed_err_check(struct mmc_card *card, - struct mmc_async_req *areq) -{ - struct mmc_queue_req *mq_rq = container_of(areq, struct mmc_queue_req, - mmc_active); - struct request *req = mq_rq->req; - struct mmc_packed *packed = mq_rq->packed; - int err, check, status; - u8 *ext_csd; - - packed->retries--; - check = mmc_blk_err_check(card, areq); - err = get_card_status(card, &status, 0); - if (err) { - pr_err("%s: error %d sending status command\n", - req->rq_disk->disk_name, err); - return MMC_BLK_ABORT; - } - - if (status & R1_EXCEPTION_EVENT) { - err = mmc_get_ext_csd(card, &ext_csd); - if (err) { - pr_err("%s: error %d sending ext_csd\n", - req->rq_disk->disk_name, err); - return MMC_BLK_ABORT; - } - - if ((ext_csd[EXT_CSD_EXP_EVENTS_STATUS] & - EXT_CSD_PACKED_FAILURE) && - (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & - EXT_CSD_PACKED_GENERIC_ERROR)) { - if (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & - EXT_CSD_PACKED_INDEXED_ERROR) { - packed->idx_failure = - ext_csd[EXT_CSD_PACKED_FAILURE_INDEX] - 1; - check = MMC_BLK_PARTIAL; - } - pr_err("%s: packed cmd failed, nr %u, sectors %u, " - "failure index: %d\n", - req->rq_disk->disk_name, packed->nr_entries, - packed->blocks, packed->idx_failure); - } - kfree(ext_csd); - } - - return check; -} - static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, struct mmc_card *card, int disable_multi, @@ -1488,7 +1413,7 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, u32 readcmd, writecmd; struct mmc_blk_request *brq = &mqrq->brq; struct request *req = mqrq->req; - struct mmc_blk_data *md = mq->data; + struct mmc_blk_data *md = mq->blkdata; bool do_data_tag; /* @@ -1640,224 +1565,6 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, mmc_queue_bounce_pre(mqrq); } -static inline u8 mmc_calc_packed_hdr_segs(struct request_queue *q, - struct mmc_card *card) -{ - unsigned int hdr_sz = mmc_large_sector(card) ? 4096 : 512; - unsigned int max_seg_sz = queue_max_segment_size(q); - unsigned int len, nr_segs = 0; - - do { - len = min(hdr_sz, max_seg_sz); - hdr_sz -= len; - nr_segs++; - } while (hdr_sz); - - return nr_segs; -} - -static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req) -{ - struct request_queue *q = mq->queue; - struct mmc_card *card = mq->card; - struct request *cur = req, *next = NULL; - struct mmc_blk_data *md = mq->data; - struct mmc_queue_req *mqrq = mq->mqrq_cur; - bool en_rel_wr = card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN; - unsigned int req_sectors = 0, phys_segments = 0; - unsigned int max_blk_count, max_phys_segs; - bool put_back = true; - u8 max_packed_rw = 0; - u8 reqs = 0; - - /* - * We don't need to check packed for any further - * operation of packed stuff as we set MMC_PACKED_NONE - * and return zero for reqs if geting null packed. Also - * we clean the flag of MMC_BLK_PACKED_CMD to avoid doing - * it again when removing blk req. - */ - if (!mqrq->packed) { - md->flags &= (~MMC_BLK_PACKED_CMD); - goto no_packed; - } - - if (!(md->flags & MMC_BLK_PACKED_CMD)) - goto no_packed; - - if ((rq_data_dir(cur) == WRITE) && - mmc_host_packed_wr(card->host)) - max_packed_rw = card->ext_csd.max_packed_writes; - - if (max_packed_rw == 0) - goto no_packed; - - if (mmc_req_rel_wr(cur) && - (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) - goto no_packed; - - if (mmc_large_sector(card) && - !IS_ALIGNED(blk_rq_sectors(cur), 8)) - goto no_packed; - - mmc_blk_clear_packed(mqrq); - - max_blk_count = min(card->host->max_blk_count, - card->host->max_req_size >> 9); - if (unlikely(max_blk_count > 0xffff)) - max_blk_count = 0xffff; - - max_phys_segs = queue_max_segments(q); - req_sectors += blk_rq_sectors(cur); - phys_segments += cur->nr_phys_segments; - - if (rq_data_dir(cur) == WRITE) { - req_sectors += mmc_large_sector(card) ? 8 : 1; - phys_segments += mmc_calc_packed_hdr_segs(q, card); - } - - do { - if (reqs >= max_packed_rw - 1) { - put_back = false; - break; - } - - spin_lock_irq(q->queue_lock); - next = blk_fetch_request(q); - spin_unlock_irq(q->queue_lock); - if (!next) { - put_back = false; - break; - } - - if (mmc_large_sector(card) && - !IS_ALIGNED(blk_rq_sectors(next), 8)) - break; - - if (req_op(next) == REQ_OP_DISCARD || - req_op(next) == REQ_OP_SECURE_ERASE || - req_op(next) == REQ_OP_FLUSH) - break; - - if (rq_data_dir(cur) != rq_data_dir(next)) - break; - - if (mmc_req_rel_wr(next) && - (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) - break; - - req_sectors += blk_rq_sectors(next); - if (req_sectors > max_blk_count) - break; - - phys_segments += next->nr_phys_segments; - if (phys_segments > max_phys_segs) - break; - - list_add_tail(&next->queuelist, &mqrq->packed->list); - cur = next; - reqs++; - } while (1); - - if (put_back) { - spin_lock_irq(q->queue_lock); - blk_requeue_request(q, next); - spin_unlock_irq(q->queue_lock); - } - - if (reqs > 0) { - list_add(&req->queuelist, &mqrq->packed->list); - mqrq->packed->nr_entries = ++reqs; - mqrq->packed->retries = reqs; - return reqs; - } - -no_packed: - mqrq->cmd_type = MMC_PACKED_NONE; - return 0; -} - -static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq, - struct mmc_card *card, - struct mmc_queue *mq) -{ - struct mmc_blk_request *brq = &mqrq->brq; - struct request *req = mqrq->req; - struct request *prq; - struct mmc_blk_data *md = mq->data; - struct mmc_packed *packed = mqrq->packed; - bool do_rel_wr, do_data_tag; - __le32 *packed_cmd_hdr; - u8 hdr_blocks; - u8 i = 1; - - mqrq->cmd_type = MMC_PACKED_WRITE; - packed->blocks = 0; - packed->idx_failure = MMC_PACKED_NR_IDX; - - packed_cmd_hdr = packed->cmd_hdr; - memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr)); - packed_cmd_hdr[0] = cpu_to_le32((packed->nr_entries << 16) | - (PACKED_CMD_WR << 8) | PACKED_CMD_VER); - hdr_blocks = mmc_large_sector(card) ? 8 : 1; - - /* - * Argument for each entry of packed group - */ - list_for_each_entry(prq, &packed->list, queuelist) { - do_rel_wr = mmc_req_rel_wr(prq) && (md->flags & MMC_BLK_REL_WR); - do_data_tag = (card->ext_csd.data_tag_unit_size) && - (prq->cmd_flags & REQ_META) && - (rq_data_dir(prq) == WRITE) && - blk_rq_bytes(prq) >= card->ext_csd.data_tag_unit_size; - /* Argument of CMD23 */ - packed_cmd_hdr[(i * 2)] = cpu_to_le32( - (do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) | - (do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) | - blk_rq_sectors(prq)); - /* Argument of CMD18 or CMD25 */ - packed_cmd_hdr[((i * 2)) + 1] = cpu_to_le32( - mmc_card_blockaddr(card) ? - blk_rq_pos(prq) : blk_rq_pos(prq) << 9); - packed->blocks += blk_rq_sectors(prq); - i++; - } - - memset(brq, 0, sizeof(struct mmc_blk_request)); - brq->mrq.cmd = &brq->cmd; - brq->mrq.data = &brq->data; - brq->mrq.sbc = &brq->sbc; - brq->mrq.stop = &brq->stop; - - brq->sbc.opcode = MMC_SET_BLOCK_COUNT; - brq->sbc.arg = MMC_CMD23_ARG_PACKED | (packed->blocks + hdr_blocks); - brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC; - - brq->cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK; - brq->cmd.arg = blk_rq_pos(req); - if (!mmc_card_blockaddr(card)) - brq->cmd.arg <<= 9; - brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; - - brq->data.blksz = 512; - brq->data.blocks = packed->blocks + hdr_blocks; - brq->data.flags = MMC_DATA_WRITE; - - brq->stop.opcode = MMC_STOP_TRANSMISSION; - brq->stop.arg = 0; - brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; - - mmc_set_data_timeout(&brq->data, card); - - brq->data.sg = mqrq->sg; - brq->data.sg_len = mmc_queue_map_sg(mq, mqrq); - - mqrq->mmc_active.mrq = &brq->mrq; - mqrq->mmc_active.err_check = mmc_blk_packed_err_check; - - mmc_queue_bounce_pre(mqrq); -} - static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, struct mmc_blk_request *brq, struct request *req, int ret) @@ -1881,97 +1588,25 @@ static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, ret = blk_end_request(req, 0, blocks << 9); } } else { - if (!mmc_packed_cmd(mq_rq->cmd_type)) - ret = blk_end_request(req, 0, brq->data.bytes_xfered); + ret = blk_end_request(req, 0, brq->data.bytes_xfered); } return ret; } -static int mmc_blk_end_packed_req(struct mmc_queue_req *mq_rq) -{ - struct request *prq; - struct mmc_packed *packed = mq_rq->packed; - int idx = packed->idx_failure, i = 0; - int ret = 0; - - while (!list_empty(&packed->list)) { - prq = list_entry_rq(packed->list.next); - if (idx == i) { - /* retry from error index */ - packed->nr_entries -= idx; - mq_rq->req = prq; - ret = 1; - - if (packed->nr_entries == MMC_PACKED_NR_SINGLE) { - list_del_init(&prq->queuelist); - mmc_blk_clear_packed(mq_rq); - } - return ret; - } - list_del_init(&prq->queuelist); - blk_end_request(prq, 0, blk_rq_bytes(prq)); - i++; - } - - mmc_blk_clear_packed(mq_rq); - return ret; -} - -static void mmc_blk_abort_packed_req(struct mmc_queue_req *mq_rq) -{ - struct request *prq; - struct mmc_packed *packed = mq_rq->packed; - - |