* [PATCH 2/2] hw/ufs: Add support MCQ of UFSHCI 4.0
[not found] ` <CGME20240521111643epcas2p4ab1c2610d26878c405288e9006bc4f92@epcas2p4.samsung.com>
@ 2024-05-21 11:05 ` Minwoo Im
2024-05-28 1:00 ` Jeuk Kim
0 siblings, 1 reply; 5+ messages in thread
From: Minwoo Im @ 2024-05-21 11:05 UTC (permalink / raw)
To: Jeuk Kim, Kevin Wolf, Hanna Reitz
Cc: qemu-devel, qemu-block, gost.dev, Minwoo Im
This patch adds support for MCQ defined in UFSHCI 4.0. This patch
utilized the legacy I/O codes as much as possible to support MCQ.
MCQ operation & runtime register is placed at 0x1000 offset of UFSHCI
register statically with no spare space among four registers (48B):
UfsMcqSqReg, UfsMcqSqIntReg, UfsMcqCqReg, UfsMcqCqIntReg
The maxinum number of queue is 32 as per spec, and the default
MAC(Multiple Active Commands) are 32 in the device.
Example:
-device ufs,serial=foo,id=ufs0,mcq=true,mcq-maxq=8
Signed-off-by: Minwoo Im <minwoo.im@samsung.com>
---
hw/ufs/trace-events | 17 ++
hw/ufs/ufs.c | 474 ++++++++++++++++++++++++++++++++++++++++++--
hw/ufs/ufs.h | 98 ++++++++-
include/block/ufs.h | 23 ++-
4 files changed, 592 insertions(+), 20 deletions(-)
diff --git a/hw/ufs/trace-events b/hw/ufs/trace-events
index 665e1a942b..dda7f8a2e5 100644
--- a/hw/ufs/trace-events
+++ b/hw/ufs/trace-events
@@ -11,13 +11,18 @@ ufs_exec_nop_cmd(uint32_t slot) "UTRLDBR slot %"PRIu32""
ufs_exec_scsi_cmd(uint32_t slot, uint8_t lun, uint8_t opcode) "slot %"PRIu32", lun 0x%"PRIx8", opcode 0x%"PRIx8""
ufs_exec_query_cmd(uint32_t slot, uint8_t opcode) "slot %"PRIu32", opcode 0x%"PRIx8""
ufs_process_uiccmd(uint32_t uiccmd, uint32_t ucmdarg1, uint32_t ucmdarg2, uint32_t ucmdarg3) "uiccmd 0x%"PRIx32", ucmdarg1 0x%"PRIx32", ucmdarg2 0x%"PRIx32", ucmdarg3 0x%"PRIx32""
+ufs_mcq_complete_req(uint8_t qid) "sqid %"PRIu8""
+ufs_mcq_create_sq(uint8_t sqid, uint8_t cqid, uint64_t addr, uint16_t size) "mcq create sq sqid %"PRIu8", cqid %"PRIu8", addr 0x%"PRIx64", size %"PRIu16""
+ufs_mcq_create_cq(uint8_t cqid, uint64_t addr, uint16_t size) "mcq create cq cqid %"PRIu8", addr 0x%"PRIx64", size %"PRIu16""
# error condition
ufs_err_dma_read_utrd(uint32_t slot, uint64_t addr) "failed to read utrd. UTRLDBR slot %"PRIu32", UTRD dma addr %"PRIu64""
ufs_err_dma_read_req_upiu(uint32_t slot, uint64_t addr) "failed to read req upiu. UTRLDBR slot %"PRIu32", request upiu addr %"PRIu64""
ufs_err_dma_read_prdt(uint32_t slot, uint64_t addr) "failed to read prdt. UTRLDBR slot %"PRIu32", prdt addr %"PRIu64""
+ufs_err_dma_read_sq(uint8_t qid, uint64_t addr) "failed to read sqe. SQ qid %"PRIu8", sqe addr %"PRIu64""
ufs_err_dma_write_utrd(uint32_t slot, uint64_t addr) "failed to write utrd. UTRLDBR slot %"PRIu32", UTRD dma addr %"PRIu64""
ufs_err_dma_write_rsp_upiu(uint32_t slot, uint64_t addr) "failed to write rsp upiu. UTRLDBR slot %"PRIu32", response upiu addr %"PRIu64""
+ufs_err_dma_write_cq(uint32_t cqid, uint64_t addr) "failed to write cq entry. cqid %"PRIu8", hwaddr %"PRIu64""
ufs_err_utrl_slot_error(uint32_t slot) "UTRLDBR slot %"PRIu32" is in error"
ufs_err_utrl_slot_busy(uint32_t slot) "UTRLDBR slot %"PRIu32" is busy"
ufs_err_unsupport_register_offset(uint32_t offset) "Register offset 0x%"PRIx32" is not yet supported"
@@ -31,3 +36,15 @@ ufs_err_query_invalid_opcode(uint8_t opcode) "query request has invalid opcode.
ufs_err_query_invalid_idn(uint8_t opcode, uint8_t idn) "query request has invalid idn. opcode: 0x%"PRIx8", idn 0x%"PRIx8""
ufs_err_query_invalid_index(uint8_t opcode, uint8_t index) "query request has invalid index. opcode: 0x%"PRIx8", index 0x%"PRIx8""
ufs_err_invalid_trans_code(uint32_t slot, uint8_t trans_code) "request upiu has invalid transaction code. slot: %"PRIu32", trans_code: 0x%"PRIx8""
+ufs_err_mcq_db_wr_invalid_sqid(uint8_t qid) "invalid mcq sqid %"PRIu8""
+ufs_err_mcq_db_wr_invalid_db(uint8_t qid, uint32_t db) "invalid mcq doorbell sqid %"PRIu8", db %"PRIu32""
+ufs_err_mcq_create_sq_invalid_sqid(uint8_t qid) "invalid mcq sqid %"PRIu8""
+ufs_err_mcq_create_sq_invalid_cqid(uint8_t qid) "invalid mcq cqid %"PRIu8""
+ufs_err_mcq_create_sq_already_exists(uint8_t qid) "mcq sqid %"PRIu8 "already exists"
+ufs_err_mcq_delete_sq_invalid_sqid(uint8_t qid) "invalid mcq sqid %"PRIu8""
+ufs_err_mcq_delete_sq_not_exists(uint8_t qid) "mcq sqid %"PRIu8 "not exists"
+ufs_err_mcq_create_cq_invalid_cqid(uint8_t qid) "invalid mcq cqid %"PRIu8""
+ufs_err_mcq_create_cq_already_exists(uint8_t qid) "mcq cqid %"PRIu8 "already exists"
+ufs_err_mcq_delete_cq_invalid_cqid(uint8_t qid) "invalid mcq cqid %"PRIu8""
+ufs_err_mcq_delete_cq_not_exists(uint8_t qid) "mcq cqid %"PRIu8 "not exists"
+ufs_err_mcq_delete_cq_sq_not_deleted(uint8_t sqid, uint8_t cqid) "mcq sq %"PRIu8" still has cq %"PRIu8""
diff --git a/hw/ufs/ufs.c b/hw/ufs/ufs.c
index bac78a32bb..d8b301f12d 100644
--- a/hw/ufs/ufs.c
+++ b/hw/ufs/ufs.c
@@ -9,7 +9,7 @@
*/
/**
- * Reference Specs: https://www.jedec.org/, 3.1
+ * Reference Specs: https://www.jedec.org/, 4.0
*
* Usage
* -----
@@ -28,10 +28,45 @@
#include "trace.h"
#include "ufs.h"
-/* The QEMU-UFS device follows spec version 3.1 */
-#define UFS_SPEC_VER 0x0310
+/* The QEMU-UFS device follows spec version 4.0 */
+#define UFS_SPEC_VER 0x0400
#define UFS_MAX_NUTRS 32
#define UFS_MAX_NUTMRS 8
+#define UFS_MCQ_QCFGPTR 2
+
+static void ufs_exec_req(UfsRequest *req);
+static void ufs_clear_req(UfsRequest *req);
+
+static inline uint64_t ufs_mcq_reg_addr(UfsHc *u, int qid)
+{
+ /* Submission Queue MCQ Registers offset (400h) */
+ return (UFS_MCQ_QCFGPTR * 0x200) + qid * 0x40;
+}
+
+static inline uint64_t ufs_mcq_op_reg_addr(UfsHc *u, int qid)
+{
+ /* MCQ Operation & Runtime Registers offset (1000h) */
+ return UFS_MCQ_OPR_START + qid * 48;
+}
+
+static inline uint64_t ufs_reg_size(UfsHc *u)
+{
+ /* Total UFS HCI Register size in bytes */
+ return ufs_mcq_op_reg_addr(u, 0) + sizeof(u->mcq_op_reg);
+}
+
+static inline bool ufs_is_mcq_reg(UfsHc *u, uint64_t addr)
+{
+ uint64_t mcq_reg_addr = ufs_mcq_reg_addr(u, 0);
+ return addr >= mcq_reg_addr && addr < mcq_reg_addr + sizeof(u->mcq_reg);
+}
+
+static inline bool ufs_is_mcq_op_reg(UfsHc *u, uint64_t addr)
+{
+ uint64_t mcq_op_reg_addr = ufs_mcq_op_reg_addr(u, 0);
+ return (addr >= mcq_op_reg_addr &&
+ addr < mcq_op_reg_addr + sizeof(u->mcq_op_reg));
+}
static MemTxResult ufs_addr_read(UfsHc *u, hwaddr addr, void *buf, int size)
{
@@ -181,9 +216,14 @@ static MemTxResult ufs_dma_read_upiu(UfsRequest *req)
{
MemTxResult ret;
- ret = ufs_dma_read_utrd(req);
- if (ret) {
- return ret;
+ /*
+ * In case of MCQ, UTRD has already been read from a SQ, so skip it.
+ */
+ if (!ufs_mcq_req(req)) {
+ ret = ufs_dma_read_utrd(req);
+ if (ret) {
+ return ret;
+ }
}
ret = ufs_dma_read_req_upiu(req);
@@ -335,6 +375,221 @@ static void ufs_process_uiccmd(UfsHc *u, uint32_t val)
ufs_irq_check(u);
}
+static void ufs_mcq_init_req(UfsHc *u, UfsRequest *req, UfsSq *sq)
+{
+ memset(req, 0, sizeof(*req));
+
+ req->hc = u;
+ req->state = UFS_REQUEST_IDLE;
+ req->slot = UFS_INVALID_SLOT;
+ req->sq = sq;
+}
+
+static void ufs_mcq_process_sq(void *opaque)
+{
+ UfsSq *sq = opaque;
+ UfsHc *u = sq->u;
+ UfsSqEntry sqe;
+ UfsRequest *req;
+ hwaddr addr;
+ uint16_t head = ufs_mcq_sq_head(u, sq->sqid);
+ int err;
+
+ while (!(ufs_mcq_sq_empty(u, sq->sqid) || QTAILQ_EMPTY(&sq->req_list))) {
+ addr = sq->addr + head;
+ err = ufs_addr_read(sq->u, addr, (void *)&sqe, sizeof(sqe));
+ if (err) {
+ trace_ufs_err_dma_read_sq(sq->sqid, addr);
+ return;
+ }
+
+ head = (head + sizeof(sqe)) % (sq->size * sizeof(sqe));
+ ufs_mcq_update_sq_head(u, sq->sqid, head);
+
+ req = QTAILQ_FIRST(&sq->req_list);
+ QTAILQ_REMOVE(&sq->req_list, req, entry);
+
+ ufs_mcq_init_req(sq->u, req, sq);
+ memcpy(&req->utrd, &sqe, sizeof(req->utrd));
+
+ req->state = UFS_REQUEST_RUNNING;
+ ufs_exec_req(req);
+ }
+}
+
+static void ufs_mcq_process_cq(void *opaque)
+{
+ UfsCq *cq = opaque;
+ UfsHc *u = cq->u;
+ UfsRequest *req, *next;
+ MemTxResult ret;
+ uint32_t tail = ufs_mcq_cq_tail(u, cq->cqid);
+
+ QTAILQ_FOREACH_SAFE(req, &cq->req_list, entry, next) {
+ ufs_dma_write_rsp_upiu(req);
+
+ req->cqe.utp_addr =
+ ((uint64_t)req->utrd.command_desc_base_addr_hi << 32ULL) |
+ req->utrd.command_desc_base_addr_lo;
+ req->cqe.utp_addr |= req->sq->sqid;
+ req->cqe.resp_len = req->utrd.response_upiu_length;
+ req->cqe.resp_off = req->utrd.response_upiu_offset;
+ req->cqe.prdt_len = req->utrd.prd_table_length;
+ req->cqe.prdt_off = req->utrd.prd_table_offset;
+ req->cqe.status = req->utrd.header.dword_2 & 0xf;
+ req->cqe.error = 0;
+
+ ret = ufs_addr_write(u, cq->addr + tail, &req->cqe,
+ sizeof(req->cqe));
+ if (ret) {
+ trace_ufs_err_dma_write_cq(cq->cqid, cq->addr + tail);
+ }
+ QTAILQ_REMOVE(&cq->req_list, req, entry);
+
+ tail = (tail + sizeof(req->cqe)) % (cq->size * sizeof(req->cqe));
+ ufs_mcq_update_cq_tail(u, cq->cqid, tail);
+
+ ufs_clear_req(req);
+ QTAILQ_INSERT_TAIL(&req->sq->req_list, req, entry);
+ }
+
+ if (!ufs_mcq_cq_empty(u, cq->cqid)) {
+ u->mcq_op_reg[cq->cqid].cq_int.is =
+ FIELD_DP32(u->mcq_op_reg[cq->cqid].cq_int.is, CQIS, TEPS, 1);
+
+ u->reg.is = FIELD_DP32(u->reg.is, IS, CQES, 1);
+ ufs_irq_check(u);
+ }
+}
+
+static bool ufs_mcq_create_sq(UfsHc *u, uint8_t qid, uint32_t attr)
+{
+ UfsMcqReg *reg = &u->mcq_reg[qid];
+ UfsSq *sq;
+ uint8_t cqid = FIELD_EX32(attr, SQATTR, CQID);
+
+ if (qid >= u->params.mcq_maxq) {
+ trace_ufs_err_mcq_create_sq_invalid_sqid(qid);
+ return false;
+ }
+
+ if (u->sq[qid]) {
+ trace_ufs_err_mcq_create_sq_already_exists(qid);
+ return false;
+ }
+
+ if (!u->cq[cqid]) {
+ trace_ufs_err_mcq_create_sq_invalid_cqid(qid);
+ return false;
+ }
+
+ sq = g_malloc0(sizeof(*sq));
+ sq->u = u;
+ sq->sqid = qid;
+ sq->cq = u->cq[cqid];
+ sq->addr = ((uint64_t)reg->squba << 32) | reg->sqlba;
+ sq->size =
+ ((FIELD_EX32(attr, SQATTR, SIZE) + 1) << 2) / sizeof(UfsSqEntry);
+
+ sq->bh = qemu_bh_new_guarded(ufs_mcq_process_sq, sq,
+ &DEVICE(u)->mem_reentrancy_guard);
+ sq->req = g_new0(UfsRequest, sq->size);
+ QTAILQ_INIT(&sq->req_list);
+ for (int i = 0; i < sq->size; i++) {
+ ufs_mcq_init_req(u, &sq->req[i], sq);
+ QTAILQ_INSERT_TAIL(&sq->req_list, &sq->req[i], entry);
+ }
+
+ u->sq[qid] = sq;
+
+ trace_ufs_mcq_create_sq(sq->sqid, sq->cq->cqid, sq->addr, sq->size);
+ return true;
+}
+
+static bool ufs_mcq_delete_sq(UfsHc *u, uint8_t qid)
+{
+ UfsSq *sq;
+
+ if (qid >= u->params.mcq_maxq) {
+ trace_ufs_err_mcq_delete_sq_invalid_sqid(qid);
+ return false;
+ }
+
+ if (!u->sq[qid]) {
+ trace_ufs_err_mcq_delete_sq_not_exists(qid);
+ return false;
+ }
+
+ sq = u->sq[qid];
+
+ qemu_bh_delete(sq->bh);
+ g_free(sq->req);
+ g_free(sq);
+ u->sq[qid] = NULL;
+ return true;
+}
+
+static bool ufs_mcq_create_cq(UfsHc *u, uint8_t qid, uint32_t attr)
+{
+ UfsMcqReg *reg = &u->mcq_reg[qid];
+ UfsCq *cq;
+
+ if (qid >= u->params.mcq_maxq) {
+ trace_ufs_err_mcq_create_cq_invalid_cqid(qid);
+ return false;
+ }
+
+ if (u->cq[qid]) {
+ trace_ufs_err_mcq_create_cq_already_exists(qid);
+ return false;
+ }
+
+ cq = g_malloc0(sizeof(*cq));
+ cq->u = u;
+ cq->cqid = qid;
+ cq->addr = ((uint64_t)reg->cquba << 32) | reg->cqlba;
+ cq->size =
+ ((FIELD_EX32(attr, CQATTR, SIZE) + 1) << 2) / sizeof(UfsCqEntry);
+
+ cq->bh = qemu_bh_new_guarded(ufs_mcq_process_cq, cq,
+ &DEVICE(u)->mem_reentrancy_guard);
+ QTAILQ_INIT(&cq->req_list);
+
+ u->cq[qid] = cq;
+
+ trace_ufs_mcq_create_cq(cq->cqid, cq->addr, cq->size);
+ return true;
+}
+
+static bool ufs_mcq_delete_cq(UfsHc *u, uint8_t qid)
+{
+ UfsCq *cq;
+
+ if (qid >= u->params.mcq_maxq) {
+ trace_ufs_err_mcq_delete_cq_invalid_cqid(qid);
+ return false;
+ }
+
+ if (!u->cq[qid]) {
+ trace_ufs_err_mcq_delete_cq_not_exists(qid);
+ return false;
+ }
+
+ for (int i = 0; i < ARRAY_SIZE(u->sq); i++) {
+ if (u->sq[i] && u->sq[i]->cq->cqid == qid) {
+ trace_ufs_err_mcq_delete_cq_sq_not_deleted(i, qid);
+ return false;
+ }
+ }
+
+ cq = u->cq[qid];
+
+ qemu_bh_delete(cq->bh);
+ g_free(cq);
+ u->cq[qid] = NULL;
+ return true;
+}
+
static void ufs_write_reg(UfsHc *u, hwaddr offset, uint32_t data, unsigned size)
{
switch (offset) {
@@ -390,6 +645,12 @@ static void ufs_write_reg(UfsHc *u, hwaddr offset, uint32_t data, unsigned size)
case A_UCMDARG3:
u->reg.ucmdarg3 = data;
break;
+ case A_CONFIG:
+ u->reg.config = data;
+ break;
+ case A_MCQCONFIG:
+ u->reg.mcqconfig = data;
+ break;
case A_UTRLCLR:
case A_UTMRLDBR:
case A_UTMRLCLR:
@@ -402,18 +663,138 @@ static void ufs_write_reg(UfsHc *u, hwaddr offset, uint32_t data, unsigned size)
}
}
+static void ufs_write_mcq_reg(UfsHc *u, hwaddr offset, uint32_t data,
+ unsigned size)
+{
+ int qid = offset / sizeof(UfsMcqReg);
+ UfsMcqReg *reg = &u->mcq_reg[qid];
+
+ switch (offset % sizeof(UfsMcqReg)) {
+ case A_SQATTR:
+ if (!FIELD_EX32(reg->sqattr, SQATTR, SQEN) &&
+ FIELD_EX32(data, SQATTR, SQEN)) {
+ if (!ufs_mcq_create_sq(u, qid, data)) {
+ break;
+ }
+ } else if (FIELD_EX32(reg->sqattr, SQATTR, SQEN) &&
+ !FIELD_EX32(data, SQATTR, SQEN)) {
+ if (!ufs_mcq_delete_sq(u, qid)) {
+ break;
+ }
+ }
+ reg->sqattr = data;
+ break;
+ case A_SQLBA:
+ reg->sqlba = data;
+ break;
+ case A_SQUBA:
+ reg->squba = data;
+ break;
+ case A_SQCFG:
+ reg->sqcfg = data;
+ break;
+ case A_CQATTR:
+ if (!FIELD_EX32(reg->cqattr, CQATTR, CQEN) &&
+ FIELD_EX32(data, CQATTR, CQEN)) {
+ if (!ufs_mcq_create_cq(u, qid, data)) {
+ break;
+ }
+ } else if (FIELD_EX32(reg->cqattr, CQATTR, CQEN) &&
+ !FIELD_EX32(data, CQATTR, CQEN)) {
+ if (!ufs_mcq_delete_cq(u, qid)) {
+ break;
+ }
+ }
+ reg->cqattr = data;
+ break;
+ case A_CQLBA:
+ reg->cqlba = data;
+ break;
+ case A_CQUBA:
+ reg->cquba = data;
+ break;
+ case A_CQCFG:
+ reg->cqcfg = data;
+ break;
+ case A_SQDAO:
+ case A_SQISAO:
+ case A_CQDAO:
+ case A_CQISAO:
+ trace_ufs_err_unsupport_register_offset(offset);
+ break;
+ default:
+ trace_ufs_err_invalid_register_offset(offset);
+ break;
+ }
+}
+
+static void ufs_mcq_process_db(UfsHc *u, uint8_t qid, uint32_t db)
+{
+ UfsSq *sq;
+
+ if (qid >= u->params.mcq_maxq) {
+ trace_ufs_err_mcq_db_wr_invalid_sqid(qid);
+ return;
+ }
+
+ sq = u->sq[qid];
+ if (sq->size * sizeof(UfsSqEntry) <= db) {
+ trace_ufs_err_mcq_db_wr_invalid_db(qid, db);
+ return;
+ }
+
+ ufs_mcq_update_sq_tail(u, sq->sqid, db);
+ qemu_bh_schedule(sq->bh);
+}
+
+static void ufs_write_mcq_op_reg(UfsHc *u, hwaddr offset, uint32_t data,
+ unsigned size)
+{
+ int qid = offset / sizeof(UfsMcqOpReg);
+ UfsMcqOpReg *opr = &u->mcq_op_reg[qid];
+
+ switch (offset % sizeof(UfsMcqOpReg)) {
+ case offsetof(UfsMcqOpReg, sq.tp):
+ if (opr->sq.tp != data) {
+ ufs_mcq_process_db(u, qid, data);
+ }
+ opr->sq.tp = data;
+ break;
+ case offsetof(UfsMcqOpReg, cq.hp):
+ opr->cq.hp = data;
+ ufs_mcq_update_cq_head(u, qid, data);
+ break;
+ case offsetof(UfsMcqOpReg, cq_int.is):
+ opr->cq_int.is &= ~data;
+ break;
+ default:
+ trace_ufs_err_invalid_register_offset(offset);
+ break;
+ }
+}
+
static uint64_t ufs_mmio_read(void *opaque, hwaddr addr, unsigned size)
{
UfsHc *u = (UfsHc *)opaque;
- uint8_t *ptr = (uint8_t *)&u->reg;
+ uint8_t *ptr;
uint64_t value;
-
- if (addr > sizeof(u->reg) - size) {
+ uint64_t offset;
+
+ if (addr < sizeof(u->reg)) {
+ offset = addr;
+ ptr = (uint8_t *)&u->reg;
+ } else if (ufs_is_mcq_reg(u, addr)) {
+ offset = addr - ufs_mcq_reg_addr(u, 0);
+ ptr = (uint8_t *)&u->mcq_reg;
+ } else if (ufs_is_mcq_op_reg(u, addr)) {
+ offset = addr - ufs_mcq_op_reg_addr(u, 0);
+ ptr = (uint8_t *)&u->mcq_op_reg;
+ } else {
trace_ufs_err_invalid_register_offset(addr);
return 0;
}
- value = *(uint32_t *)(ptr + addr);
+ value = *(uint32_t *)(ptr + offset);
trace_ufs_mmio_read(addr, value, size);
return value;
}
@@ -423,13 +804,18 @@ static void ufs_mmio_write(void *opaque, hwaddr addr, uint64_t data,
{
UfsHc *u = (UfsHc *)opaque;
- if (addr > sizeof(u->reg) - size) {
+ trace_ufs_mmio_write(addr, data, size);
+
+ if (addr < sizeof(u->reg)) {
+ ufs_write_reg(u, addr, data, size);
+ } else if (ufs_is_mcq_reg(u, addr)) {
+ ufs_write_mcq_reg(u, addr - ufs_mcq_reg_addr(u, 0), data, size);
+ } else if (ufs_is_mcq_op_reg(u, addr)) {
+ ufs_write_mcq_op_reg(u, addr - ufs_mcq_op_reg_addr(u, 0),
+ data, size);
+ } else {
trace_ufs_err_invalid_register_offset(addr);
- return;
}
-
- trace_ufs_mmio_write(addr, data, size);
- ufs_write_reg(u, addr, data, size);
}
static const MemoryRegionOps ufs_mmio_ops = {
@@ -1086,9 +1472,16 @@ void ufs_complete_req(UfsRequest *req, UfsReqResult req_result)
req->utrd.header.dword_2 = cpu_to_le32(UFS_OCS_INVALID_CMD_TABLE_ATTR);
}
- trace_ufs_complete_req(req->slot);
req->state = UFS_REQUEST_COMPLETE;
- qemu_bh_schedule(u->complete_bh);
+
+ if (ufs_mcq_req(req)) {
+ trace_ufs_mcq_complete_req(req->sq->sqid);
+ QTAILQ_INSERT_TAIL(&req->sq->cq->req_list, req, entry);
+ qemu_bh_schedule(req->sq->cq->bh);
+ } else {
+ trace_ufs_complete_req(req->slot);
+ qemu_bh_schedule(u->complete_bh);
+ }
}
static void ufs_clear_req(UfsRequest *req)
@@ -1158,6 +1551,11 @@ static bool ufs_check_constraints(UfsHc *u, Error **errp)
return false;
}
+ if (u->params.mcq_maxq >= UFS_MAX_MCQ_QNUM) {
+ error_setg(errp, "mcq-maxq must be less than %d", UFS_MAX_MCQ_QNUM);
+ return false;
+ }
+
return true;
}
@@ -1189,15 +1587,24 @@ static void ufs_init_state(UfsHc *u)
&DEVICE(u)->mem_reentrancy_guard);
u->complete_bh = qemu_bh_new_guarded(ufs_sendback_req, u,
&DEVICE(u)->mem_reentrancy_guard);
+
+ if (u->params.mcq) {
+ memset(u->sq, 0, sizeof(u->sq));
+ memset(u->cq, 0, sizeof(u->cq));
+ }
}
static void ufs_init_hc(UfsHc *u)
{
uint32_t cap = 0;
+ uint32_t mcqconfig = 0;
+ uint32_t mcqcap = 0;
- u->reg_size = pow2ceil(sizeof(UfsReg));
+ u->reg_size = pow2ceil(ufs_reg_size(u));
memset(&u->reg, 0, sizeof(u->reg));
+ memset(&u->mcq_reg, 0, sizeof(u->mcq_reg));
+ memset(&u->mcq_op_reg, 0, sizeof(u->mcq_op_reg));
cap = FIELD_DP32(cap, CAP, NUTRS, (u->params.nutrs - 1));
cap = FIELD_DP32(cap, CAP, RTT, 2);
cap = FIELD_DP32(cap, CAP, NUTMRS, (u->params.nutmrs - 1));
@@ -1206,7 +1613,29 @@ static void ufs_init_hc(UfsHc *u)
cap = FIELD_DP32(cap, CAP, OODDS, 0);
cap = FIELD_DP32(cap, CAP, UICDMETMS, 0);
cap = FIELD_DP32(cap, CAP, CS, 0);
+ cap = FIELD_DP32(cap, CAP, LSDBS, 1);
+ cap = FIELD_DP32(cap, CAP, MCQS, u->params.mcq);
u->reg.cap = cap;
+
+ if (u->params.mcq) {
+ mcqconfig = FIELD_DP32(mcqconfig, MCQCONFIG, MAC, 0x1f);
+ u->reg.mcqconfig = mcqconfig;
+
+ mcqcap = FIELD_DP32(mcqcap, MCQCAP, MAXQ, u->params.mcq_maxq - 1);
+ mcqcap = FIELD_DP32(mcqcap, MCQCAP, RRP, 1);
+ mcqcap = FIELD_DP32(mcqcap, MCQCAP, QCFGPTR, UFS_MCQ_QCFGPTR);
+ u->reg.mcqcap = mcqcap;
+
+ for (int i = 0; i < ARRAY_SIZE(u->mcq_reg); i++) {
+ uint64_t addr = ufs_mcq_op_reg_addr(u, i);
+ u->mcq_reg[i].sqdao = addr;
+ u->mcq_reg[i].sqisao = addr + sizeof(UfsMcqSqReg);
+ addr += sizeof(UfsMcqSqReg);
+ u->mcq_reg[i].cqdao = addr + sizeof(UfsMcqSqIntReg);
+ addr += sizeof(UfsMcqSqIntReg);
+ u->mcq_reg[i].cqisao = addr + sizeof(UfsMcqCqReg);
+ }
+ }
u->reg.ver = UFS_SPEC_VER;
memset(&u->device_desc, 0, sizeof(DeviceDescriptor));
@@ -1288,12 +1717,21 @@ static void ufs_exit(PCIDevice *pci_dev)
ufs_clear_req(&u->req_list[i]);
}
g_free(u->req_list);
+
+ for (int i = 0; i < ARRAY_SIZE(u->sq); i++) {
+ ufs_mcq_delete_sq(u, i);
+ }
+ for (int i = 0; i < ARRAY_SIZE(u->cq); i++) {
+ ufs_mcq_delete_cq(u, i);
+ }
}
static Property ufs_props[] = {
DEFINE_PROP_STRING("serial", UfsHc, params.serial),
DEFINE_PROP_UINT8("nutrs", UfsHc, params.nutrs, 32),
DEFINE_PROP_UINT8("nutmrs", UfsHc, params.nutmrs, 8),
+ DEFINE_PROP_BOOL("mcq", UfsHc, params.mcq, false),
+ DEFINE_PROP_UINT8("mcq-maxq", UfsHc, params.mcq_maxq, 1),
DEFINE_PROP_END_OF_LIST(),
};
diff --git a/hw/ufs/ufs.h b/hw/ufs/ufs.h
index 8fda94f4ef..6c9382cbc4 100644
--- a/hw/ufs/ufs.h
+++ b/hw/ufs/ufs.h
@@ -16,6 +16,7 @@
#include "block/ufs.h"
#define UFS_MAX_LUS 32
+#define UFS_MAX_MCQ_QNUM 32
#define UFS_BLOCK_SIZE_SHIFT 12
#define UFS_BLOCK_SIZE (1 << UFS_BLOCK_SIZE_SHIFT)
@@ -45,10 +46,11 @@ typedef enum UfsReqResult {
UFS_REQUEST_NO_COMPLETE = 2,
} UfsReqResult;
+#define UFS_INVALID_SLOT (-1)
typedef struct UfsRequest {
struct UfsHc *hc;
UfsRequestState state;
- int slot;
+ int slot; /* -1 when it's a MCQ request */
UtpTransferReqDesc utrd;
UtpUpiuReq req_upiu;
@@ -57,8 +59,18 @@ typedef struct UfsRequest {
/* for scsi command */
QEMUSGList *sg;
uint32_t data_len;
+
+ /* for MCQ */
+ struct UfsSq *sq;
+ struct UfsCqEntry cqe;
+ QTAILQ_ENTRY(UfsRequest) entry;
} UfsRequest;
+static inline bool ufs_mcq_req(UfsRequest *req)
+{
+ return req->sq != NULL;
+}
+
struct UfsLu;
typedef UfsReqResult (*UfsScsiOp)(struct UfsLu *, UfsRequest *);
@@ -76,13 +88,43 @@ typedef struct UfsParams {
char *serial;
uint8_t nutrs; /* Number of UTP Transfer Request Slots */
uint8_t nutmrs; /* Number of UTP Task Management Request Slots */
+ bool mcq; /* Multiple Command Queue support */
+ uint8_t mcq_qcfgptr; /* MCQ Queue Configuration Pointer in MCQCAP */
+ uint8_t mcq_maxq; /* MCQ Maximum number of Queues */
} UfsParams;
+/*
+ * MCQ Properties
+ */
+typedef struct UfsSq {
+ struct UfsHc *u;
+ uint8_t sqid;
+ struct UfsCq *cq;
+ uint64_t addr;
+ uint16_t size; /* A number of entries (qdepth) */
+
+ QEMUBH *bh; /* Bottom half to process requests in async */
+ UfsRequest *req;
+ QTAILQ_HEAD(, UfsRequest) req_list; /* Free request list */
+} UfsSq;
+
+typedef struct UfsCq {
+ struct UfsHc *u;
+ uint8_t cqid;
+ uint64_t addr;
+ uint16_t size; /* A number of entries (qdepth) */
+
+ QEMUBH *bh;
+ QTAILQ_HEAD(, UfsRequest) req_list;
+} UfsCq;
+
typedef struct UfsHc {
PCIDevice parent_obj;
UfsBus bus;
MemoryRegion iomem;
UfsReg reg;
+ UfsMcqReg mcq_reg[UFS_MAX_MCQ_QNUM];
+ UfsMcqOpReg mcq_op_reg[UFS_MAX_MCQ_QNUM];
UfsParams params;
uint32_t reg_size;
UfsRequest *req_list;
@@ -100,8 +142,62 @@ typedef struct UfsHc {
qemu_irq irq;
QEMUBH *doorbell_bh;
QEMUBH *complete_bh;
+
+ /* MCQ properties */
+ UfsSq *sq[UFS_MAX_MCQ_QNUM];
+ UfsCq *cq[UFS_MAX_MCQ_QNUM];
} UfsHc;
+static inline uint32_t ufs_mcq_sq_tail(UfsHc *u, uint32_t qid)
+{
+ return u->mcq_op_reg[qid].sq.tp;
+}
+
+static inline void ufs_mcq_update_sq_tail(UfsHc *u, uint32_t qid, uint32_t db)
+{
+ u->mcq_op_reg[qid].sq.tp = db;
+}
+
+static inline uint32_t ufs_mcq_sq_head(UfsHc *u, uint32_t qid)
+{
+ return u->mcq_op_reg[qid].sq.hp;
+}
+
+static inline void ufs_mcq_update_sq_head(UfsHc *u, uint32_t qid, uint32_t db)
+{
+ u->mcq_op_reg[qid].sq.hp = db;
+}
+
+static inline bool ufs_mcq_sq_empty(UfsHc *u, uint32_t qid)
+{
+ return ufs_mcq_sq_tail(u, qid) == ufs_mcq_sq_head(u, qid);
+}
+
+static inline uint32_t ufs_mcq_cq_tail(UfsHc *u, uint32_t qid)
+{
+ return u->mcq_op_reg[qid].cq.tp;
+}
+
+static inline void ufs_mcq_update_cq_tail(UfsHc *u, uint32_t qid, uint32_t db)
+{
+ u->mcq_op_reg[qid].cq.tp = db;
+}
+
+static inline uint32_t ufs_mcq_cq_head(UfsHc *u, uint32_t qid)
+{
+ return u->mcq_op_reg[qid].cq.hp;
+}
+
+static inline void ufs_mcq_update_cq_head(UfsHc *u, uint32_t qid, uint32_t db)
+{
+ u->mcq_op_reg[qid].cq.hp = db;
+}
+
+static inline bool ufs_mcq_cq_empty(UfsHc *u, uint32_t qid)
+{
+ return ufs_mcq_cq_tail(u, qid) == ufs_mcq_cq_head(u, qid);
+}
+
#define TYPE_UFS "ufs"
#define UFS(obj) OBJECT_CHECK(UfsHc, (obj), TYPE_UFS)
diff --git a/include/block/ufs.h b/include/block/ufs.h
index 3513b6e772..92da7a89b9 100644
--- a/include/block/ufs.h
+++ b/include/block/ufs.h
@@ -152,7 +152,8 @@ REG32(MCQCONFIG, offsetof(UfsReg, mcqconfig))
FIELD(MCQCONFIG, MAC, 8, 8)
#define UFS_INTR_MASK \
- ((1 << R_IS_CEFES_SHIFT) | (1 << R_IS_SBFES_SHIFT) | \
+ ((1 << R_IS_CQES_SHIFT) | \
+ (1 << R_IS_CEFES_SHIFT) | (1 << R_IS_SBFES_SHIFT) | \
(1 << R_IS_HCFES_SHIFT) | (1 << R_IS_UTPES_SHIFT) | \
(1 << R_IS_DFES_SHIFT) | (1 << R_IS_UCCS_SHIFT) | \
(1 << R_IS_UTMRCS_SHIFT) | (1 << R_IS_ULSS_SHIFT) | \
@@ -242,6 +243,21 @@ typedef struct QEMU_PACKED UfsMcqCqIntReg {
REG32(CQIS, offsetof(UfsMcqCqIntReg, is))
FIELD(CQIS, TEPS, 0, 1)
+/*
+ * Provide MCQ Operation & Runtime Registers as a contiguous addressed
+ * registers for the simplicity.
+ * DAO(Doorbell Address Offset) and ISAO(Interrupt Status Register Address
+ * Offset) registers should be properly configured with the following
+ * structure.
+ */
+#define UFS_MCQ_OPR_START 0x1000
+typedef struct QEMU_PACKED UfsMcqOpReg {
+ UfsMcqSqReg sq;
+ UfsMcqSqIntReg sq_int;
+ UfsMcqCqReg cq;
+ UfsMcqCqIntReg cq_int;
+} UfsMcqOpReg;
+
typedef struct QEMU_PACKED DeviceDescriptor {
uint8_t length;
uint8_t descriptor_idn;
@@ -1169,6 +1185,11 @@ static inline void _ufs_check_size(void)
{
QEMU_BUILD_BUG_ON(sizeof(UfsReg) != 0x38C);
QEMU_BUILD_BUG_ON(sizeof(UfsMcqReg) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(UfsMcqSqReg) != 20);
+ QEMU_BUILD_BUG_ON(sizeof(UfsMcqCqReg) != 8);
+ QEMU_BUILD_BUG_ON(sizeof(UfsMcqSqIntReg) != 8);
+ QEMU_BUILD_BUG_ON(sizeof(UfsMcqCqIntReg) != 12);
+ QEMU_BUILD_BUG_ON(sizeof(UfsMcqOpReg) != 48);
QEMU_BUILD_BUG_ON(sizeof(DeviceDescriptor) != 89);
QEMU_BUILD_BUG_ON(sizeof(GeometryDescriptor) != 87);
QEMU_BUILD_BUG_ON(sizeof(UnitDescriptor) != 45);
--
2.34.1
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