diff options
Diffstat (limited to 'drivers/ufs')
-rw-r--r-- | drivers/ufs/core/ufs-mcq.c | 59 | ||||
-rw-r--r-- | drivers/ufs/core/ufshcd-priv.h | 1 | ||||
-rw-r--r-- | drivers/ufs/core/ufshcd.c | 48 |
3 files changed, 103 insertions, 5 deletions
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index 2f680ff5cafc..c77bc54527b2 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -149,14 +149,69 @@ static int ufshcd_mcq_config_nr_queues(struct ufs_hba *hba) return 0; } +int ufshcd_mcq_memory_alloc(struct ufs_hba *hba) +{ + struct ufs_hw_queue *hwq; + size_t utrdl_size, cqe_size; + int i; + + for (i = 0; i < hba->nr_hw_queues; i++) { + hwq = &hba->uhq[i]; + + utrdl_size = sizeof(struct utp_transfer_req_desc) * + hwq->max_entries; + hwq->sqe_base_addr = dmam_alloc_coherent(hba->dev, utrdl_size, + &hwq->sqe_dma_addr, + GFP_KERNEL); + if (!hwq->sqe_dma_addr) { + dev_err(hba->dev, "SQE allocation failed\n"); + return -ENOMEM; + } + + cqe_size = sizeof(struct cq_entry) * hwq->max_entries; + hwq->cqe_base_addr = dmam_alloc_coherent(hba->dev, cqe_size, + &hwq->cqe_dma_addr, + GFP_KERNEL); + if (!hwq->cqe_dma_addr) { + dev_err(hba->dev, "CQE allocation failed\n"); + return -ENOMEM; + } + } + + return 0; +} + + int ufshcd_mcq_init(struct ufs_hba *hba) { - int ret; + struct ufs_hw_queue *hwq; + int ret, i; ret = ufshcd_mcq_config_nr_queues(hba); if (ret) return ret; ret = ufshcd_vops_mcq_config_resource(hba); - return ret; + if (ret) + return ret; + + hba->uhq = devm_kzalloc(hba->dev, + hba->nr_hw_queues * sizeof(struct ufs_hw_queue), + GFP_KERNEL); + if (!hba->uhq) { + dev_err(hba->dev, "ufs hw queue memory allocation failed\n"); + return -ENOMEM; + } + + for (i = 0; i < hba->nr_hw_queues; i++) { + hwq = &hba->uhq[i]; + hwq->max_entries = hba->nutrs; + } + + /* The very first HW queue serves device commands */ + hba->dev_cmd_queue = &hba->uhq[0]; + /* Give dev_cmd_queue the minimal number of entries */ + hba->dev_cmd_queue->max_entries = MAX_DEV_CMD_ENTRIES; + + return 0; } diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h index 11076c3111c5..667e601a480f 100644 --- a/drivers/ufs/core/ufshcd-priv.h +++ b/drivers/ufs/core/ufshcd-priv.h @@ -63,6 +63,7 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode, void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit); int ufshcd_mcq_init(struct ufs_hba *hba); int ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba); +int ufshcd_mcq_memory_alloc(struct ufs_hba *hba); #define SD_ASCII_STD true #define SD_RAW false diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 5c8570c8e100..9b4d7a9c81e6 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -3720,6 +3720,14 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba) } /* + * Skip utmrdl allocation; it may have been + * allocated during first pass and not released during + * MCQ memory allocation. + * See ufshcd_release_sdb_queue() and ufshcd_config_mcq() + */ + if (hba->utmrdl_base_addr) + goto skip_utmrdl; + /* * Allocate memory for UTP Task Management descriptors * UFSHCI requires 1024 byte alignment of UTMRD */ @@ -3735,6 +3743,7 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba) goto out; } +skip_utmrdl: /* Allocate memory for local reference block */ hba->lrb = devm_kcalloc(hba->dev, hba->nutrs, sizeof(struct ufshcd_lrb), @@ -8295,6 +8304,22 @@ out: return ret; } +/* SDB - Single Doorbell */ +static void ufshcd_release_sdb_queue(struct ufs_hba *hba, int nutrs) +{ + size_t ucdl_size, utrdl_size; + + ucdl_size = sizeof(struct utp_transfer_cmd_desc) * nutrs; + dmam_free_coherent(hba->dev, ucdl_size, hba->ucdl_base_addr, + hba->ucdl_dma_addr); + + utrdl_size = sizeof(struct utp_transfer_req_desc) * nutrs; + dmam_free_coherent(hba->dev, utrdl_size, hba->utrdl_base_addr, + hba->utrdl_dma_addr); + + devm_kfree(hba->dev, hba->lrb); +} + static int ufshcd_alloc_mcq(struct ufs_hba *hba) { int ret; @@ -8306,12 +8331,29 @@ static int ufshcd_alloc_mcq(struct ufs_hba *hba) hba->nutrs = ret; ret = ufshcd_mcq_init(hba); - if (ret) { - hba->nutrs = old_nutrs; - return ret; + if (ret) + goto err; + + /* + * Previously allocated memory for nutrs may not be enough in MCQ mode. + * Number of supported tags in MCQ mode may be larger than SDB mode. + */ + if (hba->nutrs != old_nutrs) { + ufshcd_release_sdb_queue(hba, old_nutrs); + ret = ufshcd_memory_alloc(hba); + if (ret) + goto err; + ufshcd_host_memory_configure(hba); } + ret = ufshcd_mcq_memory_alloc(hba); + if (ret) + goto err; + return 0; +err: + hba->nutrs = old_nutrs; + return ret; } static int ufshcd_device_init(struct ufs_hba *hba, bool init_dev_params) |