[RFC PATCH v2 1/2] scsi: ufs: Add Multi-Circular Queue support
From: Can Guo
Date: Thu Aug 11 2022 - 06:35:47 EST
From: Asutosh Das <quic_asutoshd@xxxxxxxxxxx>
Adds MCQ support to UFS.
The design uses shared tags across all the hw queues.
The queue-depth is chosen within range supported by controller &
device. It also takes EXT_IID into account while choosing the queue
depth.
It supports default, read, poll and a dev cmd queue.
It enables MCQ after determining the queue-depth that the ufs
device supports.
Co-developed-by: Can Guo <quic_cang@xxxxxxxxxxx>
Signed-off-by: Asutosh Das <quic_asutoshd@xxxxxxxxxxx>
Signed-off-by: Can Guo <quic_cang@xxxxxxxxxxx>
---
drivers/ufs/core/Makefile | 2 +-
drivers/ufs/core/ufs-mcq.c | 524 +++++++++++++++++++++++++++++++++++++++++++++
drivers/ufs/core/ufshcd.c | 394 ++++++++++++++++++++++++++--------
include/ufs/ufs.h | 5 +
include/ufs/ufshcd.h | 223 ++++++++++++++++++-
include/ufs/ufshci.h | 77 +++++++
6 files changed, 1135 insertions(+), 90 deletions(-)
create mode 100644 drivers/ufs/core/ufs-mcq.c
diff --git a/drivers/ufs/core/Makefile b/drivers/ufs/core/Makefile
index 62f38c5..4d02e0f 100644
--- a/drivers/ufs/core/Makefile
+++ b/drivers/ufs/core/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_SCSI_UFSHCD) += ufshcd-core.o
-ufshcd-core-y += ufshcd.o ufs-sysfs.o
+ufshcd-core-y += ufshcd.o ufs-sysfs.o ufs-mcq.o
ufshcd-core-$(CONFIG_DEBUG_FS) += ufs-debugfs.o
ufshcd-core-$(CONFIG_SCSI_UFS_BSG) += ufs_bsg.o
ufshcd-core-$(CONFIG_SCSI_UFS_CRYPTO) += ufshcd-crypto.o
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
new file mode 100644
index 0000000..9d87153
--- /dev/null
+++ b/drivers/ufs/core/ufs-mcq.c
@@ -0,0 +1,524 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2022, Linux Foundation. All rights reserved.
+ *
+ * Authors:
+ * Asutosh Das <quic_asutoshd@xxxxxxxxxxx>
+ * Can Guo <quic_cang@xxxxxxxxxxx>
+ */
+
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <asm/unaligned.h>
+
+#include <ufs/ufshcd.h>
+
+#define MCQ_CFG_MAC_OFFSET 8
+#define MCQ_CFG_MAC_MASK UFS_MASK(0x1FF, MCQ_CFG_MAC_OFFSET)
+
+#define MCQ_QCFGPTR_MASK 0xff
+#define MCQ_QCFGPTR_UNIT 0x200
+#define mcq_sqattr_offset(c) \
+ ((((c) >> 16) & MCQ_QCFGPTR_MASK) * MCQ_QCFGPTR_UNIT)
+
+#define MCQ_ENTRY_SIZE_IN_DWORD 8
+#define MCQ_QCFG_SIZE 0x40
+
+static unsigned int dev_cmd_queue = 1;
+static unsigned int read_queues;
+static unsigned int poll_queues = 1;
+
+static int rw_queue_count_set(const char *val, const struct kernel_param *kp)
+{
+ unsigned int n;
+ int ret;
+
+ ret = kstrtouint(val, 10, &n);
+ if (ret)
+ return ret;
+ if (n > num_possible_cpus())
+ return -EINVAL;
+ return param_set_uint(val, kp);
+}
+
+static const struct kernel_param_ops rw_queue_count_ops = {
+ .set = rw_queue_count_set,
+ .get = param_get_uint,
+};
+
+static unsigned int rw_queues = 8;
+module_param_cb(rw_queues, &rw_queue_count_ops, &rw_queues, 0644);
+MODULE_PARM_DESC(rw_queues, "Number of queues used for rw. Default value is 8");
+
+/* resources */
+static const struct ufshcd_res_info_t ufshcd_res_info[RES_MAX] = {
+ {"ufs_mem", NULL, NULL},
+ {"mcq", NULL, NULL},
+ {"mcq_sqd", NULL, NULL},
+ {"mcq_sqis", NULL, NULL},
+ {"mcq_cqd", NULL, NULL},
+ {"mcq_cqis", NULL, NULL},
+ {"mcq_vs", NULL, NULL},
+};
+
+u32 ufshcd_mcq_find_queue_depth(struct ufs_hba *hba)
+{
+ u32 qd, val, mac;
+
+ val = ufshcd_readl(hba, REG_UFS_MCQ_CFG);
+ mac = ufshcd_mcq_vops_get_hba_mac(hba);
+ if (mac < 0)
+ mac = (val & MCQ_CFG_MAC_MASK) >> MCQ_CFG_MAC_OFFSET;
+
+ /* MAC is a 0 based value. */
+ mac += 1;
+ qd = min_t(u32, mac, hba->dev_info.bqueuedepth);
+ if (!qd)
+ qd = mac;
+
+ /* Adjust queue depth based on ext_iid support. */
+ if (qd > 256 && (!hba->ext_iid_sup || !hba->dev_info.b_ext_iid_en))
+ qd = 256;
+ if (qd > 4096 && hba->ext_iid_sup && hba->dev_info.b_ext_iid_en)
+ qd = 4096;
+
+ return qd;
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_find_queue_depth);
+
+void ufshcd_mcq_config_mac(struct ufs_hba *hba, u32 set)
+{
+ u32 val;
+
+ val = ufshcd_readl(hba, REG_UFS_MCQ_CFG);
+ val &= ~MCQ_CFG_MAC_MASK;
+ val |= set << MCQ_CFG_MAC_OFFSET;
+ ufshcd_writel(hba, val, REG_UFS_MCQ_CFG);
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_config_mac);
+
+struct ufs_hw_queue *ufshcd_mcq_find_hwq(struct ufs_hba *hba,
+ struct request *req)
+{
+ u32 utag, hwq;
+
+ utag = blk_mq_unique_tag(req);
+ hwq = blk_mq_unique_tag_to_hwq(utag);
+
+ return &hba->uhq[hwq + UFSHCD_MCQ_IO_QUEUE_OFFSET];
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_find_hwq);
+
+int ufshcd_mcq_memory_alloc(struct ufs_hba *hba)
+{
+ struct ufs_hw_queue *hwq;
+ size_t utrdl_size, cqe_size;
+ int i;
+
+ for_each_hw_queue(hba, 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 || WARN_ON(hwq->sqe_dma_addr &
+ (PAGE_SIZE - 1))) {
+ dev_err(hba->dev, "Alloc SQE 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 || WARN_ON(hwq->cqe_dma_addr &
+ (PAGE_SIZE - 1))) {
+ dev_err(hba->dev, "Alloc CQE failed\n");
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_memory_alloc);
+
+#define MCQ_CFG_n(r, i) \
+ ((r) + MCQ_QCFG_SIZE * (i))
+#define MCQ_ROP_OFFSET_n(p, i) \
+ (hba->mcq_rop[(p)].offset + hba->mcq_rop[(p)].stride * (i))
+
+static inline void __iomem *mcq_rop_base(struct ufs_hba *hba,
+ enum ufshcd_mcq_rop n, int i)
+{
+ struct ufshcd_mcq_rop_info_t *rop = &hba->mcq_rop[n];
+
+ return rop->base + rop->stride * i;
+}
+
+void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba)
+{
+ struct ufs_hw_queue *hwq;
+ u16 qsize;
+ int i;
+
+ for_each_hw_queue(hba, i) {
+ hwq = &hba->uhq[i];
+ hwq->id = i;
+ qsize = hwq->max_entries * MCQ_ENTRY_SIZE_IN_DWORD - 1;
+
+ /* SQLBA */
+ ufsmcq_writel(hba, lower_32_bits(hwq->sqe_dma_addr),
+ MCQ_CFG_n(REG_SQLBA, i));
+ /* SQUBA */
+ ufsmcq_writel(hba, upper_32_bits(hwq->sqe_dma_addr),
+ MCQ_CFG_n(REG_SQUBA, i));
+ /* SQDAO */
+ ufsmcq_writel(hba, MCQ_ROP_OFFSET_n(ROP_SQD, i),
+ MCQ_CFG_n(REG_SQDAO, i));
+ /* SQISAO */
+ ufsmcq_writel(hba, MCQ_ROP_OFFSET_n(ROP_SQIS, i),
+ MCQ_CFG_n(REG_SQISAO, i));
+
+ /* CQLBA */
+ ufsmcq_writel(hba, lower_32_bits(hwq->cqe_dma_addr),
+ MCQ_CFG_n(REG_CQLBA, i));
+ /* CQUBA */
+ ufsmcq_writel(hba, upper_32_bits(hwq->cqe_dma_addr),
+ MCQ_CFG_n(REG_CQUBA, i));
+ /* CQDAO */
+ ufsmcq_writel(hba, MCQ_ROP_OFFSET_n(ROP_CQD, i),
+ MCQ_CFG_n(REG_CQDAO, i));
+ /* CQISAO */
+ ufsmcq_writel(hba, MCQ_ROP_OFFSET_n(ROP_CQIS, i),
+ MCQ_CFG_n(REG_CQISAO, i));
+
+ /* Save the base addresses for quicker access */
+ hwq->mcq_sq_hp = mcq_rop_base(hba, ROP_SQD, i) + REG_SQHP;
+ hwq->mcq_sq_tp = mcq_rop_base(hba, ROP_SQD, i) + REG_SQTP;
+ hwq->mcq_cq_hp = mcq_rop_base(hba, ROP_CQD, i) + REG_CQHP;
+ hwq->mcq_cq_tp = mcq_rop_base(hba, ROP_CQD, i) + REG_CQTP;
+
+ /* enable CQIE.TEPS interrupt only for non-poll queues */
+ if (i < hba->nr_hw_queues - hba->nr_queues[HCTX_TYPE_POLL])
+ writel(1, mcq_rop_base(hba, ROP_CQIS, i) + REG_CQIE);
+
+ /* cqen|size */
+ ufsmcq_writel(hba, (1 << 31) | qsize, MCQ_CFG_n(REG_CQATTR, i));
+
+ /* sqen|size|cqid */
+ ufsmcq_writel(hba, (1 << 31) | qsize | (i << 16),
+ MCQ_CFG_n(REG_SQATTR, i));
+ }
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_make_queues_operational);
+
+static void ufshcd_mcq_release_resource(struct ufs_hba *hba)
+{
+ struct ufshcd_res_info_t *res;
+ int i;
+
+ for (i = RES_MCQ; i < RES_MAX; i++) {
+ res = &hba->res[i];
+
+ if (res->base) {
+ devm_iounmap(hba->dev, res->base);
+ res->base = NULL;
+ }
+
+ if (res->is_alloc)
+ devm_kfree(hba->dev, res->resource);
+ }
+}
+
+static int ufshcd_mcq_config_resource(struct ufs_hba *hba)
+{
+ struct platform_device *pdev = to_platform_device(hba->dev);
+ struct ufshcd_res_info_t *res;
+ struct resource *res_mem, *res_mcq;
+ int i, ret = 0;
+
+ memcpy(hba->res, ufshcd_res_info, sizeof(ufshcd_res_info));
+
+ for (i = 0; i < RES_MAX; i++) {
+ res = &hba->res[i];
+
+ res->resource = platform_get_resource_byname(pdev,
+ IORESOURCE_MEM,
+ res->name);
+ if (!res->resource) {
+ dev_err(hba->dev, "Resource %s not provided\n");
+ if (i == RES_MEM)
+ return -ENOMEM;
+ continue;
+ } else if (i == RES_MEM) {
+ res_mem = res->resource;
+ res->base = hba->mmio_base;
+ continue;
+ }
+
+ res->base = devm_ioremap_resource(hba->dev, res->resource);
+ if (IS_ERR(res->base)) {
+ dev_err(hba->dev, "Failed to map res %s, err=%d\n",
+ res->name, PTR_ERR(res->base));
+ res->base = NULL;
+ ret = PTR_ERR(res->base);
+ goto out_err;
+ }
+ }
+
+ res = &hba->res[RES_MCQ];
+ /* MCQ resource provided */
+ if (res->base)
+ goto out;
+
+ /* Manually allocate MCQ resource */
+ res_mcq = res->resource;
+ res_mcq = devm_kzalloc(hba->dev, sizeof(*res_mcq), GFP_KERNEL);
+ if (!res_mcq) {
+ dev_err(hba->dev, "Failed to alloate MCQ resource\n");
+ goto out_err;
+ }
+ res->is_alloc = true;
+
+ res_mcq->start = res_mem->start +
+ mcq_sqattr_offset(hba->mcq_capabilities);
+ res_mcq->end = res_mcq->start + hba->nr_hw_queues * MCQ_QCFG_SIZE - 1;
+ res_mcq->flags = res_mem->flags;
+ res_mcq->name = "mcq";
+
+ ret = insert_resource(&iomem_resource, res_mcq);
+ if (ret) {
+ dev_err(hba->dev, "Failed to insert MCQ resource %d\n", ret);
+ goto out_err;
+ }
+
+ res->base = devm_ioremap_resource(hba->dev, res_mcq);
+ if (IS_ERR(res->base)) {
+ dev_err(hba->dev, "Map MCQ registers failed, err=%d\n",
+ PTR_ERR(res->base));
+ ret = PTR_ERR(res->base);
+ res->base = NULL;
+ goto out_err;
+ }
+
+out:
+ hba->mcq_base = res->base;
+ return 0;
+
+out_err:
+ ufshcd_mcq_release_resource(hba);
+ return ret;
+}
+
+static void ufshcd_mcq_config_nr_queues(struct ufs_hba *hba)
+{
+ int i;
+ u32 hbaq_cap, def_nr_queues, max_nr_queues;
+ struct Scsi_Host *host = hba->host;
+
+ /* default queues will be less than or equal to max_nr_queues */
+ def_nr_queues = rw_queues + poll_queues + read_queues + dev_cmd_queue;
+ max_nr_queues = num_possible_cpus() + poll_queues + read_queues +
+ dev_cmd_queue;
+ hbaq_cap = hba->mcq_capabilities & 0xff;
+
+ if (hbaq_cap >= max_nr_queues)
+ hba->nr_queues[HCTX_TYPE_DEFAULT] = num_possible_cpus();
+ else if (hbaq_cap >= def_nr_queues)
+ hba->nr_queues[HCTX_TYPE_DEFAULT] = rw_queues;
+ else
+ hba->nr_queues[HCTX_TYPE_DEFAULT] = hbaq_cap - read_queues -
+ poll_queues - dev_cmd_queue;
+
+ hba->nr_queues[HCTX_TYPE_READ] = read_queues;
+ hba->nr_queues[HCTX_TYPE_POLL] = poll_queues;
+
+ for (i = 0; i < HCTX_MAX_TYPES; i++)
+ host->nr_hw_queues += hba->nr_queues[i];
+
+ /* One more reserved for dev_cmd_queue */
+ hba->nr_hw_queues = host->nr_hw_queues + 1;
+}
+
+int ufshcd_mcq_init(struct ufs_hba *hba)
+{
+ struct Scsi_Host *host = hba->host;
+ struct ufs_hw_queue *hwq;
+ int i, ret = 0;
+
+ if (!is_mcq_supported(hba))
+ return 0;
+
+ ufshcd_mcq_config_nr_queues(hba);
+
+ ret = ufshcd_mcq_config_resource(hba);
+ if (ret) {
+ dev_err(hba->dev, "Failed to config MCQ resource\n");
+ return ret;
+ }
+
+ ret = ufshcd_mcq_vops_config_rop(hba);
+ if (ret) {
+ dev_err(hba->dev, "MCQ Runtime Operation Pointers not configured\n");
+ goto out_err;
+ }
+
+ host->host_tagset = 1;
+
+ hba->uhq = devm_kmalloc(hba->dev,
+ hba->nr_hw_queues * sizeof(struct ufs_hw_queue),
+ GFP_KERNEL);
+ if (!hba->uhq) {
+ dev_err(hba->dev, "Alloc ufs hw queue failed\n");
+ ret = -ENOMEM;
+ goto out_err;
+ }
+
+ for_each_hw_queue(hba, i) {
+ hwq = &hba->uhq[i];
+ hwq->max_entries = hba->nutrs;
+ spin_lock_init(&hwq->sq_lock);
+ spin_lock_init(&hwq->cq_lock);
+ }
+ /* The very first HW queue is to serve dev_cmd */
+ hba->dev_cmd_queue = &hba->uhq[0];
+ /* Give dev_cmd_queue the minimal num of entries */
+ hba->dev_cmd_queue->max_entries = 2;
+
+ /* Selct MCQ mode */
+ ufshcd_writel(hba, ufshcd_readl(hba, REG_UFS_MEM_CFG) | 0x1,
+ REG_UFS_MEM_CFG);
+ hba->use_mcq = true;
+
+ return 0;
+
+out_err:
+ ufshcd_mcq_release_resource(hba);
+ devm_kfree(hba->dev, hba->uhq);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_init);
+
+u32 ufshcd_mcq_read_cqis(struct ufs_hba *hba, int i)
+{
+ return readl(mcq_rop_base(hba, ROP_CQIS, i) + REG_CQIS);
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_read_cqis);
+
+void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i)
+{
+ writel(val, mcq_rop_base(hba, ROP_CQIS, i) + REG_CQIS);
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_write_cqis);
+
+/**
+ * ufshcd_mcq_enable_cq_intr - Enable MCQ completion queue interrupts
+ * @hba: per adapter instance
+ * @intrs: interrupt bits
+ */
+void ufshcd_mcq_enable_cq_intr(struct ufs_hba *hba, u32 intrs)
+{
+ int i;
+ u32 set;
+
+ for_each_hw_queue(hba, i) {
+ /* enable CQIS.TEPS interrupt only for non-poll queues */
+ if (i >= hba->nr_hw_queues - hba->nr_queues[HCTX_TYPE_POLL])
+ continue;
+
+ set = readl(mcq_rop_base(hba, ROP_CQIS, i) + REG_CQIE);
+ set |= intrs;
+ writel(set, mcq_rop_base(hba, ROP_CQIS, i) + REG_CQIE);
+ }
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_enable_cq_intr);
+
+/**
+ * ufshcd_mcq_disable_cq_intr - Disable MCQ completion queue interrupts
+ * @hba: per adapter instance
+ * @intrs: interrupt bits
+ */
+void ufshcd_mcq_disable_cq_intr(struct ufs_hba *hba, u32 intrs)
+{
+ int i;
+ u32 set;
+
+ for_each_hw_queue(hba, i) {
+ set = readl(mcq_rop_base(hba, ROP_CQIS, i) + REG_CQIE);
+ set &= ~intrs;
+ writel(set, mcq_rop_base(hba, ROP_CQIS, i) + REG_CQIE);
+ }
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_disable_cq_intr);
+
+void ufshcd_mcq_enable_esi(struct ufs_hba *hba)
+{
+ ufshcd_writel(hba, ufshcd_readl(hba, REG_UFS_MEM_CFG) | 0x2,
+ REG_UFS_MEM_CFG);
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_enable_esi);
+
+void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg)
+{
+ ufshcd_writel(hba, msg->address_lo, REG_UFS_ESILBA);
+ ufshcd_writel(hba, msg->address_hi, REG_UFS_ESIUBA);
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_config_esi);
+
+static inline int ufshcd_mcq_get_tag(struct ufs_hba *hba,
+ struct ufs_hw_queue *hwq,
+ struct cq_entry *cqe)
+{
+ dma_addr_t dma_addr;
+
+ dma_addr = ((u64)le32_to_cpu(cqe->command_desc_base_addr_hi) << 32) |
+ (le32_to_cpu(cqe->command_desc_base_addr_lo) & 0xffffff80);
+
+ return (dma_addr - hba->ucdl_dma_addr) /
+ sizeof_utp_transfer_cmd_desc(hba);
+}
+
+static inline void ufshcd_mcq_process_event(struct ufs_hba *hba,
+ struct ufs_hw_queue *hwq)
+{
+ struct cq_entry *cqe = ufshcd_mcq_cur_cqe(hwq);
+ int tag;
+
+ tag = ufshcd_mcq_get_tag(hba, hwq, cqe);
+ ufshcd_compl_one_task(hba, tag, cqe);
+}
+
+unsigned long ufshcd_mcq_poll_cqe_nolock(struct ufs_hba *hba,
+ struct ufs_hw_queue *hwq)
+{
+ unsigned long completed_reqs = 0;
+
+ ufshcd_mcq_update_cq_tp_slot(hwq);
+ while (!ufshcd_mcq_is_cq_empty(hwq)) {
+ ufshcd_mcq_process_event(hba, hwq);
+ ufshcd_mcq_inc_cq_hp_slot(hwq);
+ completed_reqs++;
+ }
+
+ if (completed_reqs)
+ ufshcd_mcq_update_cq_hp(hwq);
+
+ return completed_reqs;
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_poll_cqe_nolock);
+
+unsigned long ufshcd_mcq_poll_cqe_lock(struct ufs_hba *hba,
+ struct ufs_hw_queue *hwq)
+{
+ unsigned long completed_reqs, flags;
+
+ spin_lock_irqsave(&hwq->cq_lock, flags);
+ completed_reqs = ufshcd_mcq_poll_cqe_nolock(hba, hwq);
+ spin_unlock_irqrestore(&hwq->cq_lock, flags);
+
+ return completed_reqs;
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_poll_cqe_lock);
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index f4f8ded..f4c1752 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -42,6 +42,11 @@
#define UFSHCD_ENABLE_INTRS (UTP_TRANSFER_REQ_COMPL |\
UTP_TASK_REQ_COMPL |\
UFSHCD_ERROR_MASK)
+
+#define UFSHCD_ENABLE_MCQ_INTRS (UTP_TASK_REQ_COMPL |\
+ UFSHCD_ERROR_MASK |\
+ MCQ_CQ_EVENT_STATUS)
+
/* UIC command timeout, unit: ms */
#define UIC_CMD_TIMEOUT 500
@@ -249,7 +254,7 @@ static int ufshcd_reset_and_restore(struct ufs_hba *hba);
static int ufshcd_eh_host_reset_handler(struct scsi_cmnd *cmd);
static int ufshcd_clear_tm_cmd(struct ufs_hba *hba, int tag);
static void ufshcd_hba_exit(struct ufs_hba *hba);
-static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params);
+static int ufshcd_probe_hba(struct ufs_hba *hba, bool initial_boot);
static int ufshcd_setup_clocks(struct ufs_hba *hba, bool on);
static inline void ufshcd_add_delay_before_dme_cmd(struct ufs_hba *hba);
static int ufshcd_host_reset_and_restore(struct ufs_hba *hba);
@@ -310,10 +315,11 @@ static void ufshcd_scsi_block_requests(struct ufs_hba *hba)
scsi_block_requests(hba->host);
}
-static void ufshcd_add_cmd_upiu_trace(struct ufs_hba *hba, unsigned int tag,
+static void ufshcd_add_cmd_upiu_trace(struct ufs_hba *hba,
+ struct ufshcd_lrb *lrbp,
enum ufs_trace_str_t str_t)
{
- struct utp_upiu_req *rq = hba->lrb[tag].ucd_req_ptr;
+ struct utp_upiu_req *rq = lrbp->ucd_req_ptr;
struct utp_upiu_header *header;
if (!trace_ufshcd_upiu_enabled())
@@ -322,7 +328,7 @@ static void ufshcd_add_cmd_upiu_trace(struct ufs_hba *hba, unsigned int tag,
if (str_t == UFS_CMD_SEND)
header = &rq->header;
else
- header = &hba->lrb[tag].ucd_rsp_ptr->header;
+ header = &lrbp->ucd_rsp_ptr->header;
trace_ufshcd_upiu(dev_name(hba->dev), str_t, header, &rq->sc.cdb,
UFS_TSF_CDB);
@@ -379,13 +385,13 @@ static void ufshcd_add_uic_command_trace(struct ufs_hba *hba,
ufshcd_readl(hba, REG_UIC_COMMAND_ARG_3));
}
-static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag,
+static void ufshcd_add_command_trace(struct ufs_hba *hba,
+ struct ufshcd_lrb *lrbp,
enum ufs_trace_str_t str_t)
{
u64 lba = 0;
u8 opcode = 0, group_id = 0;
u32 intr, doorbell;
- struct ufshcd_lrb *lrbp = &hba->lrb[tag];
struct scsi_cmnd *cmd = lrbp->cmd;
struct request *rq = scsi_cmd_to_rq(cmd);
int transfer_len = -1;
@@ -394,7 +400,7 @@ static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag,
return;
/* trace UPIU also */
- ufshcd_add_cmd_upiu_trace(hba, tag, str_t);
+ ufshcd_add_cmd_upiu_trace(hba, lrbp, str_t);
if (!trace_ufshcd_command_enabled())
return;
@@ -419,7 +425,7 @@ static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag,
intr = ufshcd_readl(hba, REG_INTERRUPT_STATUS);
doorbell = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
- trace_ufshcd_command(dev_name(hba->dev), str_t, tag,
+ trace_ufshcd_command(dev_name(hba->dev), str_t, lrbp->task_tag,
doorbell, transfer_len, intr, lba, opcode, group_id);
}
@@ -739,8 +745,11 @@ static inline bool ufshcd_is_device_present(struct ufs_hba *hba)
* This function is used to get the OCS field from UTRD
* Returns the OCS field in the UTRD
*/
-static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp)
+static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp,
+ struct cq_entry *cqe)
{
+ if (cqe)
+ return le32_to_cpu(cqe->status) & MASK_OCS;
return le32_to_cpu(lrbp->utr_descriptor_ptr->header.dword_2) & MASK_OCS;
}
@@ -2131,27 +2140,43 @@ static void ufshcd_update_monitor(struct ufs_hba *hba, const struct ufshcd_lrb *
/**
* ufshcd_send_command - Send SCSI or device management commands
* @hba: per adapter instance
- * @task_tag: Task tag of the command
+ * @lrbp: pointer to lrb
+ * @hwq: hardware queue
*/
static inline
-void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag)
+void ufshcd_send_command(struct ufs_hba *hba, struct ufshcd_lrb *lrbp,
+ struct ufs_hw_queue *hwq)
{
- struct ufshcd_lrb *lrbp = &hba->lrb[task_tag];
unsigned long flags;
lrbp->issue_time_stamp = ktime_get();
lrbp->compl_time_stamp = ktime_set(0, 0);
- ufshcd_add_command_trace(hba, task_tag, UFS_CMD_SEND);
+ ufshcd_add_command_trace(hba, lrbp, UFS_CMD_SEND);
ufshcd_clk_scaling_start_busy(hba);
if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
ufshcd_start_monitor(hba, lrbp);
- spin_lock_irqsave(&hba->outstanding_lock, flags);
- if (hba->vops && hba->vops->setup_xfer_req)
- hba->vops->setup_xfer_req(hba, task_tag, !!lrbp->cmd);
- __set_bit(task_tag, &hba->outstanding_reqs);
- ufshcd_writel(hba, 1 << task_tag, REG_UTP_TRANSFER_REQ_DOOR_BELL);
- spin_unlock_irqrestore(&hba->outstanding_lock, flags);
+ if (is_mcq_enabled(hba)) {
+ int utrd_size = sizeof(struct utp_transfer_req_desc);
+
+ spin_lock(&hwq->sq_lock);
+ if (hba->vops && hba->vops->setup_xfer_req)
+ hba->vops->setup_xfer_req(hba, lrbp->task_tag,
+ !!lrbp->cmd);
+ memcpy(hwq->sqe_base_addr + (hwq->sq_tp_slot * utrd_size),
+ lrbp->utr_descriptor_ptr, utrd_size);
+ ufshcd_inc_tp(hwq);
+ spin_unlock(&hwq->sq_lock);
+ } else {
+ spin_lock_irqsave(&hba->outstanding_lock, flags);
+ if (hba->vops && hba->vops->setup_xfer_req)
+ hba->vops->setup_xfer_req(hba, lrbp->task_tag,
+ !!lrbp->cmd);
+ __set_bit(lrbp->task_tag, &hba->outstanding_reqs);
+ ufshcd_writel(hba, 1 << lrbp->task_tag,
+ REG_UTP_TRANSFER_REQ_DOOR_BELL);
+ spin_unlock_irqrestore(&hba->outstanding_lock, flags);
+ }
}
/**
@@ -2239,6 +2264,13 @@ static inline int ufshcd_hba_capabilities(struct ufs_hba *hba)
if (err)
dev_err(hba->dev, "crypto setup failed\n");
+ hba->mcq_sup = (hba->capabilities & MASK_MCQ_SUPPORT) >> 30;
+ if (!hba->mcq_sup)
+ return err;
+
+ hba->mcq_capabilities = ufshcd_readl(hba, REG_MCQCAP);
+ hba->ext_iid_sup = (hba->mcq_capabilities & MASK_EXT_IID_SUPPORT) >> 10;
+
return err;
}
@@ -2553,9 +2585,10 @@ void ufshcd_prepare_utp_scsi_cmd_upiu(struct ufshcd_lrb *lrbp, u8 upiu_flags)
/* command descriptor fields */
ucd_req_ptr->header.dword_0 = UPIU_HEADER_DWORD(
UPIU_TRANSACTION_COMMAND, upiu_flags,
- lrbp->lun, lrbp->task_tag);
+ lrbp->lun, lrbp->task_tag & 0xff);
ucd_req_ptr->header.dword_1 = UPIU_HEADER_DWORD(
- UPIU_COMMAND_SET_TYPE_SCSI, 0, 0, 0);
+ UPIU_COMMAND_SET_TYPE_SCSI, 0, 0,
+ (lrbp->task_tag & 0xF00) << 4);
/* Total EHS length and Data segment length will be zero */
ucd_req_ptr->header.dword_2 = 0;
@@ -2703,25 +2736,26 @@ static inline bool is_device_wlun(struct scsi_device *sdev)
*/
static int ufshcd_map_queues(struct Scsi_Host *shost)
{
- int i, ret;
+ int i, queue_offset = 0, ret;
+ struct ufs_hba *hba = shost_priv(shost);
for (i = 0; i < shost->nr_maps; i++) {
struct blk_mq_queue_map *map = &shost->tag_set.map[i];
- switch (i) {
- case HCTX_TYPE_DEFAULT:
- case HCTX_TYPE_POLL:
- map->nr_queues = 1;
- break;
- case HCTX_TYPE_READ:
- map->nr_queues = 0;
+ map->nr_queues = hba->nr_queues[i];
+ if (!map->nr_queues)
continue;
- default:
- WARN_ON_ONCE(true);
- }
- map->queue_offset = 0;
+
+ map->queue_offset = queue_offset;
+ if (i == HCTX_TYPE_POLL && !is_mcq_supported(hba))
+ map->queue_offset = 0;
+
ret = blk_mq_map_queues(map);
- WARN_ON_ONCE(ret);
+
+ if (ret)
+ return ret;
+
+ queue_offset += map->nr_queues;
}
return 0;
@@ -2761,6 +2795,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
int tag = scsi_cmd_to_rq(cmd)->tag;
struct ufshcd_lrb *lrbp;
int err = 0;
+ struct ufs_hw_queue *hwq = NULL;
WARN_ONCE(tag < 0 || tag >= hba->nutrs, "Invalid tag %d\n", tag);
@@ -2845,8 +2880,10 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
goto out;
}
- ufshcd_send_command(hba, tag);
+ if (is_mcq_enabled(hba))
+ hwq = ufshcd_mcq_find_hwq(hba, scsi_cmd_to_rq(cmd));
+ ufshcd_send_command(hba, lrbp, hwq);
out:
rcu_read_unlock();
@@ -2963,7 +3000,7 @@ static int ufshcd_wait_for_dev_cmd(struct ufs_hba *hba,
spin_lock_irqsave(hba->host->host_lock, flags);
hba->dev_cmd.complete = NULL;
if (likely(time_left)) {
- err = ufshcd_get_tr_ocs(lrbp);
+ err = ufshcd_get_tr_ocs(lrbp, hba->dev_cmd.cqe);
if (!err)
err = ufshcd_dev_cmd_completion(hba, lrbp);
}
@@ -2971,7 +3008,7 @@ static int ufshcd_wait_for_dev_cmd(struct ufs_hba *hba,
if (!time_left) {
err = -ETIMEDOUT;
- dev_dbg(hba->dev, "%s: dev_cmd request timedout, tag %d\n",
+ dev_err(hba->dev, "%s: dev_cmd request timedout, tag %d\n",
__func__, lrbp->task_tag);
if (!ufshcd_clear_cmds(hba, 1U << lrbp->task_tag))
/* successfully cleared the command, retry if needed */
@@ -3002,7 +3039,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba,
enum dev_cmd_type cmd_type, int timeout)
{
DECLARE_COMPLETION_ONSTACK(wait);
- const u32 tag = hba->reserved_slot;
+ u32 tag = hba->reserved_slot;
struct ufshcd_lrb *lrbp;
int err;
@@ -3018,10 +3055,10 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba,
goto out;
hba->dev_cmd.complete = &wait;
+ hba->dev_cmd.cqe = NULL;
ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp->ucd_req_ptr);
-
- ufshcd_send_command(hba, tag);
+ ufshcd_send_command(hba, lrbp, hba->dev_cmd_queue);
err = ufshcd_wait_for_dev_cmd(hba, lrbp, timeout);
ufshcd_add_query_upiu_trace(hba, err ? UFS_QUERY_ERR : UFS_QUERY_COMP,
(struct utp_upiu_req *)lrbp->ucd_rsp_ptr);
@@ -3617,11 +3654,11 @@ static int ufshcd_get_ref_clk_gating_wait(struct ufs_hba *hba)
* ufshcd_memory_alloc - allocate memory for host memory space data structures
* @hba: per adapter instance
*
- * 1. Allocate DMA memory for Command Descriptor array
- * Each command descriptor consist of Command UPIU, Response UPIU and PRDT
- * 2. Allocate DMA memory for UTP Transfer Request Descriptor List (UTRDL).
- * 3. Allocate DMA memory for UTP Task Management Request Descriptor List
+ * 1. Allocate DMA memory for UTP Task Management Request Descriptor List
* (UTMRDL)
+ * 2. Allocate DMA memory for Command Descriptor array
+ * Each command descriptor consist of Command UPIU, Response UPIU and PRDT
+ * 3. Allocate DMA memory for UTP Transfer Request Descriptor List (UTRDL).
* 4. Allocate memory for local reference block(lrb).
*
* Returns 0 for success, non-zero in case of failure
@@ -3666,6 +3703,8 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
goto out;
}
+ if (hba->utmrdl_base_addr)
+ goto skip_utmrdl;
/*
* Allocate memory for UTP Task Management descriptors
* UFSHCI requires 1024 byte alignment of UTMRD
@@ -3682,6 +3721,7 @@ 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),
@@ -3695,6 +3735,21 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
return -ENOMEM;
}
+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);
+}
+
/**
* ufshcd_host_memory_configure - configure local reference block with
* memory offsets
@@ -3708,7 +3763,7 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
* 3. Save the corresponding addresses of UTRD, UCD.CMD, UCD.RSP and UCD.PRDT
* into local reference block.
*/
-static void ufshcd_host_memory_configure(struct ufs_hba *hba)
+static int ufshcd_host_memory_configure(struct ufs_hba *hba)
{
struct utp_transfer_req_desc *utrdlp;
dma_addr_t cmd_desc_dma_addr;
@@ -3756,6 +3811,8 @@ static void ufshcd_host_memory_configure(struct ufs_hba *hba)
ufshcd_init_lrb(hba, &hba->lrb[i], i);
}
+
+ return 0;
}
/**
@@ -4508,11 +4565,13 @@ int ufshcd_make_hba_operational(struct ufs_hba *hba)
else
ufshcd_disable_intr_aggr(hba);
- /* Configure UTRL and UTMRL base address registers */
+ /* Configure UTRL base address registers */
ufshcd_writel(hba, lower_32_bits(hba->utrdl_dma_addr),
REG_UTP_TRANSFER_REQ_LIST_BASE_L);
ufshcd_writel(hba, upper_32_bits(hba->utrdl_dma_addr),
REG_UTP_TRANSFER_REQ_LIST_BASE_H);
+
+ /* Configure UTMRL base address registers */
ufshcd_writel(hba, lower_32_bits(hba->utmrdl_dma_addr),
REG_UTP_TASK_REQ_LIST_BASE_L);
ufshcd_writel(hba, upper_32_bits(hba->utmrdl_dma_addr),
@@ -5149,14 +5208,15 @@ ufshcd_scsi_cmd_status(struct ufshcd_lrb *lrbp, int scsi_status)
* Returns result of the command to notify SCSI midlayer
*/
static inline int
-ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
+ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp,
+ struct cq_entry *cqe)
{
int result = 0;
int scsi_status;
enum utp_ocs ocs;
/* overall command status of utrd */
- ocs = ufshcd_get_tr_ocs(lrbp);
+ ocs = ufshcd_get_tr_ocs(lrbp, cqe);
if (hba->quirks & UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR) {
if (be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_1) &
@@ -5320,6 +5380,34 @@ static void ufshcd_release_scsi_cmd(struct ufs_hba *hba,
ufshcd_clk_scaling_update_busy(hba);
}
+void ufshcd_compl_one_task(struct ufs_hba *hba, int task_tag,
+ struct cq_entry *cqe)
+{
+ struct ufshcd_lrb *lrbp;
+ struct scsi_cmnd *cmd;
+
+ lrbp = &hba->lrb[task_tag];
+ lrbp->compl_time_stamp = ktime_get();
+ cmd = lrbp->cmd;
+ if (cmd) {
+ if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
+ ufshcd_update_monitor(hba, lrbp);
+ ufshcd_add_command_trace(hba, lrbp, UFS_CMD_COMP);
+ cmd->result = ufshcd_transfer_rsp_status(hba, lrbp, cqe);
+ ufshcd_release_scsi_cmd(hba, lrbp);
+ /* Do not touch lrbp after scsi done */
+ scsi_done(cmd);
+ } else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE ||
+ lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) {
+ if (hba->dev_cmd.complete) {
+ hba->dev_cmd.cqe = cqe;
+ ufshcd_add_command_trace(hba, lrbp, UFS_DEV_COMP);
+ complete(hba->dev_cmd.complete);
+ ufshcd_clk_scaling_update_busy(hba);
+ }
+ }
+}
+
/**
* __ufshcd_transfer_req_compl - handle SCSI and query command completion
* @hba: per adapter instance
@@ -5328,32 +5416,10 @@ static void ufshcd_release_scsi_cmd(struct ufs_hba *hba,
static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
unsigned long completed_reqs)
{
- struct ufshcd_lrb *lrbp;
- struct scsi_cmnd *cmd;
- int index;
-
- for_each_set_bit(index, &completed_reqs, hba->nutrs) {
- lrbp = &hba->lrb[index];
- lrbp->compl_time_stamp = ktime_get();
- cmd = lrbp->cmd;
- if (cmd) {
- if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
- ufshcd_update_monitor(hba, lrbp);
- ufshcd_add_command_trace(hba, index, UFS_CMD_COMP);
- cmd->result = ufshcd_transfer_rsp_status(hba, lrbp);
- ufshcd_release_scsi_cmd(hba, lrbp);
- /* Do not touch lrbp after scsi done */
- scsi_done(cmd);
- } else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE ||
- lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) {
- if (hba->dev_cmd.complete) {
- ufshcd_add_command_trace(hba, index,
- UFS_DEV_COMP);
- complete(hba->dev_cmd.complete);
- ufshcd_clk_scaling_update_busy(hba);
- }
- }
- }
+ int tag;
+
+ for_each_set_bit(tag, &completed_reqs, hba->nutrs)
+ ufshcd_compl_one_task(hba, tag, NULL);
}
/*
@@ -5363,9 +5429,15 @@ static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
static int ufshcd_poll(struct Scsi_Host *shost, unsigned int queue_num)
{
struct ufs_hba *hba = shost_priv(shost);
- unsigned long completed_reqs, flags;
+ struct ufs_hw_queue *hwq;
+ unsigned long completed_reqs = 0, flags;
u32 tr_doorbell;
+ if (is_mcq_enabled(hba)) {
+ hwq = &hba->uhq[queue_num + UFSHCD_MCQ_IO_QUEUE_OFFSET];
+ return ufshcd_mcq_poll_cqe_lock(hba, hwq);
+ }
+
spin_lock_irqsave(&hba->outstanding_lock, flags);
tr_doorbell = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
completed_reqs = ~tr_doorbell & hba->outstanding_reqs;
@@ -5389,7 +5461,7 @@ static int ufshcd_poll(struct Scsi_Host *shost, unsigned int queue_num)
* IRQ_HANDLED - If interrupt is valid
* IRQ_NONE - If invalid interrupt
*/
-static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
+irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
{
/* Resetting interrupt aggregation counters first and reading the
* DOOR_BELL afterward allows us to handle all the completed requests.
@@ -5413,6 +5485,43 @@ static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
return IRQ_HANDLED;
}
+EXPORT_SYMBOL_GPL(ufshcd_transfer_req_compl);
+
+/**
+ * ufshcd_handle_mcq_cq_events - handle MCQ completion queue events
+ * @hba: per adapter instance
+ *
+ * Returns
+ * IRQ_HANDLED - If interrupt is valid
+ * IRQ_NONE - If invalid interrupt
+ */
+static irqreturn_t ufshcd_handle_mcq_cq_events(struct ufs_hba *hba)
+{
+ struct ufs_hw_queue *hwq;
+ unsigned long outstanding_cqs;
+ unsigned int nr_queues;
+ int i, ret;
+ u32 events;
+
+ ret = ufshcd_vops_get_outstanding_cqs(hba, &outstanding_cqs);
+ if (ret)
+ outstanding_cqs = (1U << hba->nr_hw_queues) - 1;
+
+ /* Exclude the poll queues */
+ nr_queues = hba->nr_hw_queues - hba->nr_queues[HCTX_TYPE_POLL];
+ for_each_set_bit(i, &outstanding_cqs, nr_queues) {
+ hwq = &hba->uhq[i];
+
+ events = ufshcd_mcq_read_cqis(hba, i);
+ if (events)
+ ufshcd_mcq_write_cqis(hba, events, i);
+
+ if (events & UFSHCD_MCQ_CQIS_TEPS)
+ ufshcd_mcq_poll_cqe_nolock(hba, hwq);
+ }
+
+ return IRQ_HANDLED;
+}
int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask)
{
@@ -5944,10 +6053,23 @@ static void ufshcd_exception_event_handler(struct work_struct *work)
ufshcd_scsi_unblock_requests(hba);
}
-/* Complete requests that have door-bell cleared */
+/*
+ * Complete requests that have door-bell cleared and/or pending completion
+ * entries on completion queues if MCQ is enabled
+ */
static void ufshcd_complete_requests(struct ufs_hba *hba)
{
- ufshcd_transfer_req_compl(hba);
+ struct ufs_hw_queue *hwq;
+ int i;
+
+ if (is_mcq_enabled(hba)) {
+ for_each_hw_queue(hba, i) {
+ hwq = &hba->uhq[i];
+ ufshcd_mcq_poll_cqe_lock(hba, hwq);
+ }
+ } else {
+ ufshcd_transfer_req_compl(hba);
+ }
ufshcd_tmc_handler(hba);
}
@@ -6210,7 +6332,6 @@ static void ufshcd_err_handler(struct work_struct *work)
ufshcd_set_eh_in_progress(hba);
spin_unlock_irqrestore(hba->host->host_lock, flags);
ufshcd_err_handling_prepare(hba);
- /* Complete requests that have door-bell cleared by h/w */
ufshcd_complete_requests(hba);
spin_lock_irqsave(hba->host->host_lock, flags);
again:
@@ -6602,6 +6723,9 @@ static irqreturn_t ufshcd_sl_intr(struct ufs_hba *hba, u32 intr_status)
if (intr_status & UTP_TRANSFER_REQ_COMPL)
retval |= ufshcd_transfer_req_compl(hba);
+ if (intr_status & MCQ_CQ_EVENT_STATUS)
+ retval |= ufshcd_handle_mcq_cq_events(hba);
+
return retval;
}
@@ -6823,7 +6947,7 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
enum query_opcode desc_op)
{
DECLARE_COMPLETION_ONSTACK(wait);
- const u32 tag = hba->reserved_slot;
+ u32 tag = hba->reserved_slot;
struct ufshcd_lrb *lrbp;
int err = 0;
u8 upiu_flags;
@@ -6866,10 +6990,11 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
hba->dev_cmd.complete = &wait;
+ hba->dev_cmd.cqe = NULL;
ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp->ucd_req_ptr);
- ufshcd_send_command(hba, tag);
+ ufshcd_send_command(hba, lrbp, hba->dev_cmd_queue);
/*
* ignore the returning value here - ufshcd_check_query_response is
* bound to fail since dev_cmd.query and dev_cmd.type were left empty.
@@ -7664,6 +7789,30 @@ static void ufshcd_temp_notif_probe(struct ufs_hba *hba, const u8 *desc_buf)
}
}
+static void ufshcd_ext_iid_probe(struct ufs_hba *hba, u8 *desc_buf)
+{
+ struct ufs_dev_info *dev_info = &hba->dev_info;
+ u32 ext_ufs_feature;
+ u32 ext_iid_en = 0;
+ int err;
+
+ if (dev_info->wspecversion < 0x400)
+ goto out;
+
+ ext_ufs_feature = get_unaligned_be32(desc_buf + DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
+
+ if (!(ext_ufs_feature & UFS_DEV_EXT_IID_SUP))
+ goto out;
+
+ err = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
+ QUERY_ATTR_IDN_EXT_IID_EN, 0, 0, &ext_iid_en);
+ if (err)
+ dev_err(hba->dev, "failed reading bEXTIIDEn. err = %d\n", err);
+
+out:
+ dev_info->b_ext_iid_en = !!ext_iid_en;
+}
+
void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
const struct ufs_dev_quirk *fixups)
{
@@ -7725,6 +7874,9 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
/* getting Specification Version in big endian format */
dev_info->wspecversion = desc_buf[DEVICE_DESC_PARAM_SPEC_VER] << 8 |
desc_buf[DEVICE_DESC_PARAM_SPEC_VER + 1];
+
+ dev_info->bqueuedepth = desc_buf[DEVICE_DESC_PARAM_Q_DPTH];
+
b_ufs_feature_sup = desc_buf[DEVICE_DESC_PARAM_UFS_FEAT];
model_index = desc_buf[DEVICE_DESC_PARAM_PRDCT_NAME];
@@ -7762,6 +7914,8 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
ufshcd_temp_notif_probe(hba, desc_buf);
+ ufshcd_ext_iid_probe(hba, desc_buf);
+
/*
* ufshcd_read_string_desc returns size of the string
* reset the error value
@@ -8135,14 +8289,61 @@ static int ufshcd_add_lus(struct ufs_hba *hba)
return ret;
}
+static int ufshcd_config_mcq(struct ufs_hba *hba)
+{
+ int old_nutrs = hba->nutrs;
+ int ret;
+ struct Scsi_Host *host = hba->host;
+
+ hba->nutrs = ufshcd_mcq_find_queue_depth(hba);
+ hba->host->can_queue = hba->nutrs - UFSHCD_NUM_RESERVED;
+ hba->reserved_slot = hba->nutrs - 1;
+
+ ret = ufshcd_mcq_init(hba);
+ if (ret) {
+ dev_err(hba->dev, "MCQ init failed %d\n", ret);
+ return ret;
+ }
+
+ if (hba->nutrs != old_nutrs) {
+ ufshcd_release_sdb_queue(hba, old_nutrs);
+ ret = ufshcd_memory_alloc(hba);
+ if (ret)
+ return ret;
+ ufshcd_host_memory_configure(hba);
+ }
+
+ ret = ufshcd_mcq_memory_alloc(hba);
+ if (ret)
+ return ret;
+
+ ret = ufshcd_mcq_vops_config_esi(hba);
+ if (ret) {
+ dev_info(hba->dev, "MCQ ESI not available %d\n", ret);
+ ret = 0;
+ }
+
+ ufshcd_enable_intr(hba, UFSHCD_ENABLE_MCQ_INTRS);
+ ufshcd_mcq_make_queues_operational(hba);
+ ufshcd_mcq_config_mac(hba, hba->nutrs);
+
+ ret = scsi_add_host(host, hba->dev);
+ if (ret)
+ dev_err(hba->dev, "scsi_add_host failed\n");
+ else
+ dev_info(hba->dev, "MCQ configured, nr_queues=%d, queue_depth=%d\n",
+ hba->nr_hw_queues, hba->nutrs);
+ return ret;
+}
+
/**
* ufshcd_probe_hba - probe hba to detect device and initialize it
* @hba: per-adapter instance
- * @init_dev_params: whether or not to call ufshcd_device_params_init().
+ * @initial_boot: Whether or not from initial bootup
*
* Execute link-startup and verify device initialization
*/
-static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params)
+static int ufshcd_probe_hba(struct ufs_hba *hba, bool initial_boot)
{
int ret;
unsigned long flags;
@@ -8177,10 +8378,16 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params)
* Initialize UFS device parameters used by driver, these
* parameters are associated with UFS descriptors.
*/
- if (init_dev_params) {
+ if (initial_boot) {
ret = ufshcd_device_params_init(hba);
if (ret)
goto out;
+
+ if (is_mcq_supported(hba)) {
+ ret = ufshcd_config_mcq(hba);
+ if (ret)
+ goto out;
+ }
}
ufshcd_tune_unipro_params(hba);
@@ -9654,6 +9861,14 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
goto out_disable;
}
+ if (!is_mcq_supported(hba)) {
+ /* Refer ufshcd_map_queues() */
+ hba->nr_queues[HCTX_TYPE_DEFAULT] = 1;
+ hba->nr_queues[HCTX_TYPE_READ] = 0;
+ hba->nr_queues[HCTX_TYPE_POLL] = 1;
+ hba->nr_hw_queues = 1;
+ }
+
/* Allocate memory for host memory space */
err = ufshcd_memory_alloc(hba);
if (err) {
@@ -9727,10 +9942,13 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
hba->is_irq_enabled = true;
}
- err = scsi_add_host(host, hba->dev);
- if (err) {
- dev_err(hba->dev, "scsi_add_host failed\n");
- goto out_disable;
+ if (!is_mcq_supported(hba)) {
+ /* Refer ufshcd_config_mcq() */
+ err = scsi_add_host(host, hba->dev);
+ if (err) {
+ dev_err(hba->dev, "scsi_add_host failed\n");
+ goto out_disable;
+ }
}
hba->tmf_tag_set = (struct blk_mq_tag_set) {
diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h
index 1bba3fe..f59cc27 100644
--- a/include/ufs/ufs.h
+++ b/include/ufs/ufs.h
@@ -165,6 +165,7 @@ enum attr_idn {
QUERY_ATTR_IDN_AVAIL_WB_BUFF_SIZE = 0x1D,
QUERY_ATTR_IDN_WB_BUFF_LIFE_TIME_EST = 0x1E,
QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE = 0x1F,
+ QUERY_ATTR_IDN_EXT_IID_EN = 0x2A,
};
/* Descriptor idn for Query requests */
@@ -352,6 +353,7 @@ enum {
UFS_DEV_EXT_TEMP_NOTIF = BIT(6),
UFS_DEV_HPB_SUPPORT = BIT(7),
UFS_DEV_WRITE_BOOSTER_SUP = BIT(8),
+ UFS_DEV_EXT_IID_SUP = BIT(16),
};
#define UFS_DEV_HPB_SUPPORT_VERSION 0x310
@@ -589,6 +591,7 @@ struct ufs_dev_info {
u8 *model;
u16 wspecversion;
u32 clk_gating_wait_us;
+ u8 bqueuedepth;
/* UFS HPB related flag */
bool hpb_enabled;
@@ -601,6 +604,8 @@ struct ufs_dev_info {
bool b_rpm_dev_flush_capable;
u8 b_presrv_uspc_en;
+
+ bool b_ext_iid_en;
};
/*
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 7fe1a92..a195663 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -22,6 +22,7 @@
#include <ufs/ufs.h>
#include <ufs/ufs_quirks.h>
#include <ufs/ufshci.h>
+#include <linux/msi.h>
#define UFSHCD "ufshcd"
@@ -218,6 +219,7 @@ struct ufs_dev_cmd {
struct mutex lock;
struct completion *complete;
struct ufs_query query;
+ struct cq_entry *cqe;
};
/**
@@ -293,6 +295,9 @@ struct ufs_pwr_mode_info {
* @config_scaling_param: called to configure clock scaling parameters
* @program_key: program or evict an inline encryption key
* @event_notify: called to notify important events
+ * @get_outstanding_cqs: called to get outstanding completion queues
+ * @config_mcq_rop: called to config Runtime Operation Pointers
+ * @config_mcq_esi: called to config MCQ ESI handlers
*/
struct ufs_hba_variant_ops {
const char *name;
@@ -331,6 +336,11 @@ struct ufs_hba_variant_ops {
const union ufs_crypto_cfg_entry *cfg, int slot);
void (*event_notify)(struct ufs_hba *hba,
enum ufs_event_type evt, void *data);
+ int (*get_outstanding_cqs)(struct ufs_hba *hba,
+ unsigned long *ocqs);
+ int (*config_mcq_rop)(struct ufs_hba *hba);
+ int (*config_mcq_esi)(struct ufs_hba *hba);
+ int (*get_hba_mac)(struct ufs_hba *hba);
};
/* clock gating state */
@@ -713,6 +723,39 @@ struct ufs_hba_monitor {
bool enabled;
};
+struct ufshcd_res_info_t {
+ char *name;
+ struct resource *resource;
+ bool is_alloc;
+ void __iomem *base;
+};
+
+enum ufshcd_res {
+ RES_MEM,
+ RES_MCQ,
+ RES_MCQ_SQD,
+ RES_MCQ_SQIS,
+ RES_MCQ_CQD,
+ RES_MCQ_CQIS,
+ RES_MCQ_VS,
+ RES_MAX,
+};
+
+/* MCQ Runtime Operation Pointer info structure */
+struct ufshcd_mcq_rop_info_t {
+ unsigned long offset;
+ unsigned long stride;
+ void __iomem *base;
+};
+
+enum ufshcd_mcq_rop {
+ ROP_SQD,
+ ROP_SQIS,
+ ROP_CQD,
+ ROP_CQIS,
+ ROP_MAX,
+};
+
/**
* struct ufs_hba - per adapter private structure
* @mmio_base: UFSHCI base register address
@@ -737,6 +780,7 @@ struct ufs_hba_monitor {
* @outstanding_lock: Protects @outstanding_reqs.
* @outstanding_reqs: Bits representing outstanding transfer requests
* @capabilities: UFS Controller Capabilities
+ * @mcq_capabilities: UFS Multi Command Queue capabilities
* @nutrs: Transfer Request Queue depth supported by controller
* @nutmrs: Task Management Queue depth supported by controller
* @reserved_slot: Used to submit device commands. Protected by @dev_cmd.lock.
@@ -818,6 +862,13 @@ struct ufs_hba_monitor {
* device
* @complete_put: whether or not to call ufshcd_rpm_put() from inside
* ufshcd_resume_complete()
+ * @uhq: array of supported hardware queues
+ * @mcq_base: Multi command queue registers base address
+ * @ucd_pool: dma pool of UCD descriptors
+ * @dao_offset: value used to calculate the SQ and CQ DAO
+ * @use_mcq: track if MCQ is enabled
+ * @mcq_sup: track if MCQ is supported by UFSHC
+ * @ext_iid_sup: EXT_IID support by UFS device
*/
struct ufs_hba {
void __iomem *mmio_base;
@@ -858,6 +909,7 @@ struct ufs_hba {
unsigned long outstanding_reqs;
u32 capabilities;
+ u32 mcq_capabilities;
int nutrs;
int nutmrs;
u32 reserved_slot;
@@ -965,8 +1017,119 @@ struct ufs_hba {
#endif
u32 luns_avail;
bool complete_put;
+ struct ufs_hw_queue *uhq;
+ struct ufs_hw_queue *dev_cmd_queue;
+ unsigned int nr_queues[HCTX_MAX_TYPES];
+ unsigned int nr_hw_queues;
+ void __iomem *mcq_base;
+ struct ufshcd_res_info_t res[RES_MAX];
+ struct ufshcd_mcq_rop_info_t mcq_rop[ROP_MAX];
+ struct dma_pool *ucd_pool;
+ u32 dao_offset;
+ bool use_mcq;
+ bool mcq_sup;
+ bool ext_iid_sup;
};
+enum {
+ ESIVEC_CQ,
+ ESIVEC_SQ,
+ ESIVEC_MAX,
+};
+
+/**
+ * @sqe_base_addr: submission queue entry base address
+ * @sqe_dma_addr: submission queue dma address
+ * @cqe_base_addr: completion queue base address
+ * @cqe_dma_addr: completion queue dma address
+ * @max_entries: max number of slots in this hardware queue
+ * @id: hardware queue ID
+ * @mcq_sq_hp: base address of submission queue head pointer
+ * @mcq_sq_tp: base address of submission queue tail pointer
+ * @mcq_cq_hp: base address of completion queue head pointer
+ * @mcq_cq_tp: base address of completion queue tail pointer
+ * @sq_lock: lock to protect submission queue head/tail pointer and slot update
+ * @sq_tp_slot: current slot to which SQ tail pointer is pointing
+ * @cq_lock: lock to protect completion queue head/tail pointer and slot update
+ * @cq_tp_slot: current slot to which CQ tail pointer is pointing
+ * @cq_hp_slot: current slot to which CQ head pointer is pointing
+ */
+struct ufs_hw_queue {
+ void *sqe_base_addr;
+ dma_addr_t sqe_dma_addr;
+ struct cq_entry *cqe_base_addr;
+ dma_addr_t cqe_dma_addr;
+ u32 max_entries;
+ u32 id;
+
+ void __iomem *mcq_sq_hp;
+ void __iomem *mcq_sq_tp;
+ void __iomem *mcq_cq_hp;
+ void __iomem *mcq_cq_tp;
+
+ spinlock_t sq_lock;
+ u32 sq_tp_slot;
+ spinlock_t cq_lock;
+ u32 cq_tp_slot;
+ u32 cq_hp_slot;
+};
+
+#define for_each_hw_queue(hba, i) \
+ for ((i) = 0; (i) < (hba)->nr_hw_queues; (i)++)
+
+#define UFSHCD_MCQ_IO_QUEUE_OFFSET 1
+
+static inline bool is_mcq_enabled(struct ufs_hba *hba)
+{
+ return hba->use_mcq;
+}
+
+static inline bool is_mcq_supported(struct ufs_hba *hba)
+{
+ return hba->mcq_sup;
+}
+
+static inline void ufshcd_inc_tp(struct ufs_hw_queue *q)
+{
+ u32 next_slot = ((q->sq_tp_slot + 1) % q->max_entries);
+ u32 val = next_slot * sizeof(struct utp_transfer_req_desc);
+
+ q->sq_tp_slot = next_slot;
+
+ writel(val, q->mcq_sq_tp);
+}
+
+static inline struct cq_entry *ufshcd_mcq_cur_cqe(struct ufs_hw_queue *q)
+{
+ struct cq_entry *cqe = q->cqe_base_addr;
+
+ return cqe + q->cq_hp_slot;
+}
+
+static inline bool ufshcd_mcq_is_cq_empty(struct ufs_hw_queue *q)
+{
+ return q->cq_hp_slot == q->cq_tp_slot;
+}
+
+static inline void ufshcd_mcq_inc_cq_hp_slot(struct ufs_hw_queue *q)
+{
+ q->cq_hp_slot++;
+ if (q->cq_hp_slot == q->max_entries)
+ q->cq_hp_slot = 0;
+}
+
+static inline void ufshcd_mcq_update_cq_hp(struct ufs_hw_queue *q)
+{
+ writel(q->cq_hp_slot * sizeof(struct cq_entry), q->mcq_cq_hp);
+}
+
+static inline void ufshcd_mcq_update_cq_tp_slot(struct ufs_hw_queue *q)
+{
+ u32 val = readl(q->mcq_cq_tp);
+
+ q->cq_tp_slot = val / sizeof(struct cq_entry);
+}
+
/* Returns true if clocks can be gated. Otherwise false */
static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba *hba)
{
@@ -1017,11 +1180,16 @@ static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba)
return hba->caps & UFSHCD_CAP_WB_EN;
}
-#define ufshcd_writel(hba, val, reg) \
+#define ufshcd_writel(hba, val, reg) \
writel((val), (hba)->mmio_base + (reg))
#define ufshcd_readl(hba, reg) \
readl((hba)->mmio_base + (reg))
+#define ufsmcq_writel(hba, val, reg) \
+ writel((val), (hba)->mcq_base + (reg))
+#define ufsmcq_readl(hba, reg) \
+ readl((hba)->mcq_base + (reg))
+
/**
* ufshcd_rmwl - perform read/modify/write for a controller register
* @hba: per adapter instance
@@ -1100,6 +1268,26 @@ extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
extern int ufshcd_config_pwr_mode(struct ufs_hba *hba,
struct ufs_pa_layer_attr *desired_pwr_mode);
extern int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode);
+extern void ufshcd_compl_one_task(struct ufs_hba *hba, int task_tag,
+ struct cq_entry *cqe);
+extern int ufshcd_mcq_init(struct ufs_hba *hba);
+extern void ufshcd_mcq_enable(struct ufs_hba *hba);
+extern int ufshcd_mcq_memory_alloc(struct ufs_hba *hba);
+extern void ufshcd_mcq_config_mac(struct ufs_hba *hba, u32 set);
+extern u32 ufshcd_mcq_read_cqis(struct ufs_hba *hba, int i);
+extern void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i);
+extern void ufshcd_mcq_enable_cq_intr(struct ufs_hba *hba, u32 intrs);
+extern void ufshcd_mcq_disable_cq_intr(struct ufs_hba *hba, u32 intrs);
+extern void ufshcd_mcq_enable_esi(struct ufs_hba *hba);
+extern void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg);
+extern unsigned long ufshcd_mcq_poll_cqe_nolock(struct ufs_hba *hba,
+ struct ufs_hw_queue *hwq);
+extern unsigned long ufshcd_mcq_poll_cqe_lock(struct ufs_hba *hba,
+ struct ufs_hw_queue *hwq);
+extern void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba);
+extern struct ufs_hw_queue *ufshcd_mcq_find_hwq(struct ufs_hba *hba,
+ struct request *req);
+extern u32 ufshcd_mcq_find_queue_depth(struct ufs_hba *hba);
/* UIC command interfaces for DME primitives */
#define DME_LOCAL 0
@@ -1232,6 +1420,39 @@ static inline int ufshcd_vops_phy_initialization(struct ufs_hba *hba)
return 0;
}
+static inline int ufshcd_vops_get_outstanding_cqs(struct ufs_hba *hba,
+ unsigned long *ocqs)
+{
+ if (hba->vops && hba->vops->get_outstanding_cqs)
+ return hba->vops->get_outstanding_cqs(hba, ocqs);
+
+ return -EOPNOTSUPP;
+}
+
+static inline int ufshcd_mcq_vops_config_rop(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->config_mcq_rop)
+ return hba->vops->config_mcq_rop(hba);
+
+ return -EOPNOTSUPP;
+}
+
+static inline int ufshcd_mcq_vops_config_esi(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->config_mcq_esi)
+ return hba->vops->config_mcq_esi(hba);
+
+ return -EOPNOTSUPP;
+}
+
+static inline int ufshcd_mcq_vops_get_hba_mac(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->get_hba_mac)
+ return hba->vops->get_hba_mac(hba);
+
+ return -EOPNOTSUPP;
+}
+
extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[];
int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h
index f81aa95..6ca29ae 100644
--- a/include/ufs/ufshci.h
+++ b/include/ufs/ufshci.h
@@ -22,6 +22,7 @@ enum {
/* UFSHCI Registers */
enum {
REG_CONTROLLER_CAPABILITIES = 0x00,
+ REG_MCQCAP = 0x04,
REG_UFS_VERSION = 0x08,
REG_CONTROLLER_DEV_ID = 0x10,
REG_CONTROLLER_PROD_ID = 0x14,
@@ -56,6 +57,10 @@ enum {
REG_UFS_CCAP = 0x100,
REG_UFS_CRYPTOCAP = 0x104,
+ REG_UFS_MEM_CFG = 0x300,
+ REG_UFS_MCQ_CFG = 0x380,
+ REG_UFS_ESILBA = 0x384,
+ REG_UFS_ESIUBA = 0x388,
UFSHCI_CRYPTO_REG_SPACE_SIZE = 0x400,
};
@@ -68,6 +73,53 @@ enum {
MASK_OUT_OF_ORDER_DATA_DELIVERY_SUPPORT = 0x02000000,
MASK_UIC_DME_TEST_MODE_SUPPORT = 0x04000000,
MASK_CRYPTO_SUPPORT = 0x10000000,
+ MASK_MCQ_SUPPORT = 0x40000000,
+};
+
+/* MCQ capability mask */
+enum {
+ MASK_EXT_IID_SUPPORT = 0x00000400,
+ MASK_ROUND_ROBIN_PRI_SUPP = 0x00000200,
+};
+
+enum {
+ REG_SQATTR = 0x0,
+ REG_SQLBA = 0x4,
+ REG_SQUBA = 0x8,
+ REG_SQDAO = 0xC,
+ REG_SQISAO = 0x10,
+ REG_SQCFG = 0x14,
+
+ REG_CQATTR = 0x20,
+ REG_CQLBA = 0x24,
+ REG_CQUBA = 0x28,
+ REG_CQDAO = 0x2C,
+ REG_CQISAO = 0x30,
+ REG_CQCFG = 0x34,
+};
+
+enum {
+ REG_SQHP = 0x0,
+ REG_SQTP = 0x4,
+ REG_SQRTC = 0x8,
+ REG_SQCTI = 0xC,
+ REG_SQRTS = 0x10,
+};
+
+enum {
+ REG_SQIS = 0x0,
+ REG_SQIE = 0x4,
+};
+
+enum {
+ REG_CQHP = 0x0,
+ REG_CQTP = 0x4,
+};
+
+enum {
+ REG_CQIS = 0x0,
+ REG_CQIE = 0x4,
+ REG_MCQIACR = 0x8,
};
#define UFS_MASK(mask, offset) ((mask) << (offset))
@@ -126,6 +178,8 @@ static inline u32 ufshci_version(u32 major, u32 minor)
#define CONTROLLER_FATAL_ERROR 0x10000
#define SYSTEM_BUS_FATAL_ERROR 0x20000
#define CRYPTO_ENGINE_FATAL_ERROR 0x40000
+#define MCQ_SQ_EVENT_STATUS 0x80000
+#define MCQ_CQ_EVENT_STATUS 0x100000
#define UFSHCD_UIC_HIBERN8_MASK (UIC_HIBERNATE_ENTER |\
UIC_HIBERNATE_EXIT)
@@ -227,6 +281,9 @@ enum {
/* UTMRLRSR - UTP Task Management Request Run-Stop Register 80h */
#define UTP_TASK_REQ_LIST_RUN_STOP_BIT 0x1
+/* CQISy - CQ y Interrupt Status Register */
+#define UFSHCD_MCQ_CQIS_TEPS 0x1
+
/* UICCMD - UIC Command */
#define COMMAND_OPCODE_MASK 0xFF
#define GEN_SELECTOR_INDEX_MASK 0xFFFF
@@ -482,6 +539,26 @@ struct utp_transfer_req_desc {
__le16 prd_table_offset;
};
+struct cq_entry {
+ /* DW 0-1 */
+ __le32 command_desc_base_addr_lo;
+ __le32 command_desc_base_addr_hi;
+
+ /* DW 2 */
+ __le16 response_upiu_length;
+ __le16 response_upiu_offset;
+
+ /* DW 3 */
+ __le16 prd_table_length;
+ __le16 prd_table_offset;
+
+ /* DW 4 */
+ __le32 status;
+
+ /* DW 5-7 */
+ u32 reserved[3];
+};
+
/*
* UTMRD structure.
*/
--
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