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qemu/hw/ufs/ufs.c
Jeuk Kim 2a8b36a496 hw/ufs: Support for UFS logical unit 
This commit adds support for ufs logical unit.
The LU handles processing for the SCSI command,
unit descriptor query request.

This commit enables the UFS device to process
IO requests.

Signed-off-by: Jeuk Kim <jeuk20.kim@samsung.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: beacc504376ab6a14b1a3830bb3c69382cf6aebc.1693980783.git.jeuk20.kim@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-09-07 14:01:29 -04:00

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/*
* QEMU Universal Flash Storage (UFS) Controller
*
* Copyright (c) 2023 Samsung Electronics Co., Ltd. All rights reserved.
*
* Written by Jeuk Kim <jeuk20.kim@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/**
* Reference Specs: https://www.jedec.org/, 3.1
*
* Usage
* -----
*
* Add options:
* -drive file=<file>,if=none,id=<drive_id>
* -device ufs,serial=<serial>,id=<bus_name>, \
* nutrs=<N[optional]>,nutmrs=<N[optional]>
* -device ufs-lu,drive=<drive_id>,bus=<bus_name>
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "migration/vmstate.h"
#include "trace.h"
#include "ufs.h"
/* The QEMU-UFS device follows spec version 3.1 */
#define UFS_SPEC_VER 0x0310
#define UFS_MAX_NUTRS 32
#define UFS_MAX_NUTMRS 8
static MemTxResult ufs_addr_read(UfsHc *u, hwaddr addr, void *buf, int size)
{
hwaddr hi = addr + size - 1;
if (hi < addr) {
return MEMTX_DECODE_ERROR;
}
if (!FIELD_EX32(u->reg.cap, CAP, 64AS) && (hi >> 32)) {
return MEMTX_DECODE_ERROR;
}
return pci_dma_read(PCI_DEVICE(u), addr, buf, size);
}
static MemTxResult ufs_addr_write(UfsHc *u, hwaddr addr, const void *buf,
int size)
{
hwaddr hi = addr + size - 1;
if (hi < addr) {
return MEMTX_DECODE_ERROR;
}
if (!FIELD_EX32(u->reg.cap, CAP, 64AS) && (hi >> 32)) {
return MEMTX_DECODE_ERROR;
}
return pci_dma_write(PCI_DEVICE(u), addr, buf, size);
}
static void ufs_complete_req(UfsRequest *req, UfsReqResult req_result);
static inline hwaddr ufs_get_utrd_addr(UfsHc *u, uint32_t slot)
{
hwaddr utrl_base_addr = (((hwaddr)u->reg.utrlbau) << 32) + u->reg.utrlba;
hwaddr utrd_addr = utrl_base_addr + slot * sizeof(UtpTransferReqDesc);
return utrd_addr;
}
static inline hwaddr ufs_get_req_upiu_base_addr(const UtpTransferReqDesc *utrd)
{
uint32_t cmd_desc_base_addr_lo =
le32_to_cpu(utrd->command_desc_base_addr_lo);
uint32_t cmd_desc_base_addr_hi =
le32_to_cpu(utrd->command_desc_base_addr_hi);
return (((hwaddr)cmd_desc_base_addr_hi) << 32) + cmd_desc_base_addr_lo;
}
static inline hwaddr ufs_get_rsp_upiu_base_addr(const UtpTransferReqDesc *utrd)
{
hwaddr req_upiu_base_addr = ufs_get_req_upiu_base_addr(utrd);
uint32_t rsp_upiu_byte_off =
le16_to_cpu(utrd->response_upiu_offset) * sizeof(uint32_t);
return req_upiu_base_addr + rsp_upiu_byte_off;
}
static MemTxResult ufs_dma_read_utrd(UfsRequest *req)
{
UfsHc *u = req->hc;
hwaddr utrd_addr = ufs_get_utrd_addr(u, req->slot);
MemTxResult ret;
ret = ufs_addr_read(u, utrd_addr, &req->utrd, sizeof(req->utrd));
if (ret) {
trace_ufs_err_dma_read_utrd(req->slot, utrd_addr);
}
return ret;
}
static MemTxResult ufs_dma_read_req_upiu(UfsRequest *req)
{
UfsHc *u = req->hc;
hwaddr req_upiu_base_addr = ufs_get_req_upiu_base_addr(&req->utrd);
UtpUpiuReq *req_upiu = &req->req_upiu;
uint32_t copy_size;
uint16_t data_segment_length;
MemTxResult ret;
/*
* To know the size of the req_upiu, we need to read the
* data_segment_length in the header first.
*/
ret = ufs_addr_read(u, req_upiu_base_addr, &req_upiu->header,
sizeof(UtpUpiuHeader));
if (ret) {
trace_ufs_err_dma_read_req_upiu(req->slot, req_upiu_base_addr);
return ret;
}
data_segment_length = be16_to_cpu(req_upiu->header.data_segment_length);
copy_size = sizeof(UtpUpiuHeader) + UFS_TRANSACTION_SPECIFIC_FIELD_SIZE +
data_segment_length;
ret = ufs_addr_read(u, req_upiu_base_addr, &req->req_upiu, copy_size);
if (ret) {
trace_ufs_err_dma_read_req_upiu(req->slot, req_upiu_base_addr);
}
return ret;
}
static MemTxResult ufs_dma_read_prdt(UfsRequest *req)
{
UfsHc *u = req->hc;
uint16_t prdt_len = le16_to_cpu(req->utrd.prd_table_length);
uint16_t prdt_byte_off =
le16_to_cpu(req->utrd.prd_table_offset) * sizeof(uint32_t);
uint32_t prdt_size = prdt_len * sizeof(UfshcdSgEntry);
g_autofree UfshcdSgEntry *prd_entries = NULL;
hwaddr req_upiu_base_addr, prdt_base_addr;
int err;
assert(!req->sg);
if (prdt_size == 0) {
return MEMTX_OK;
}
prd_entries = g_new(UfshcdSgEntry, prdt_size);
req_upiu_base_addr = ufs_get_req_upiu_base_addr(&req->utrd);
prdt_base_addr = req_upiu_base_addr + prdt_byte_off;
err = ufs_addr_read(u, prdt_base_addr, prd_entries, prdt_size);
if (err) {
trace_ufs_err_dma_read_prdt(req->slot, prdt_base_addr);
return err;
}
req->sg = g_malloc0(sizeof(QEMUSGList));
pci_dma_sglist_init(req->sg, PCI_DEVICE(u), prdt_len);
for (uint16_t i = 0; i < prdt_len; ++i) {
hwaddr data_dma_addr = le64_to_cpu(prd_entries[i].addr);
uint32_t data_byte_count = le32_to_cpu(prd_entries[i].size) + 1;
qemu_sglist_add(req->sg, data_dma_addr, data_byte_count);
}
return MEMTX_OK;
}
static MemTxResult ufs_dma_read_upiu(UfsRequest *req)
{
MemTxResult ret;
ret = ufs_dma_read_utrd(req);
if (ret) {
return ret;
}
ret = ufs_dma_read_req_upiu(req);
if (ret) {
return ret;
}
ret = ufs_dma_read_prdt(req);
if (ret) {
return ret;
}
return 0;
}
static MemTxResult ufs_dma_write_utrd(UfsRequest *req)
{
UfsHc *u = req->hc;
hwaddr utrd_addr = ufs_get_utrd_addr(u, req->slot);
MemTxResult ret;
ret = ufs_addr_write(u, utrd_addr, &req->utrd, sizeof(req->utrd));
if (ret) {
trace_ufs_err_dma_write_utrd(req->slot, utrd_addr);
}
return ret;
}
static MemTxResult ufs_dma_write_rsp_upiu(UfsRequest *req)
{
UfsHc *u = req->hc;
hwaddr rsp_upiu_base_addr = ufs_get_rsp_upiu_base_addr(&req->utrd);
uint32_t rsp_upiu_byte_len =
le16_to_cpu(req->utrd.response_upiu_length) * sizeof(uint32_t);
uint16_t data_segment_length =
be16_to_cpu(req->rsp_upiu.header.data_segment_length);
uint32_t copy_size = sizeof(UtpUpiuHeader) +
UFS_TRANSACTION_SPECIFIC_FIELD_SIZE +
data_segment_length;
MemTxResult ret;
if (copy_size > rsp_upiu_byte_len) {
copy_size = rsp_upiu_byte_len;
}
ret = ufs_addr_write(u, rsp_upiu_base_addr, &req->rsp_upiu, copy_size);
if (ret) {
trace_ufs_err_dma_write_rsp_upiu(req->slot, rsp_upiu_base_addr);
}
return ret;
}
static MemTxResult ufs_dma_write_upiu(UfsRequest *req)
{
MemTxResult ret;
ret = ufs_dma_write_rsp_upiu(req);
if (ret) {
return ret;
}
return ufs_dma_write_utrd(req);
}
static void ufs_irq_check(UfsHc *u)
{
PCIDevice *pci = PCI_DEVICE(u);
if ((u->reg.is & UFS_INTR_MASK) & u->reg.ie) {
trace_ufs_irq_raise();
pci_irq_assert(pci);
} else {
trace_ufs_irq_lower();
pci_irq_deassert(pci);
}
}
static void ufs_process_db(UfsHc *u, uint32_t val)
{
unsigned long doorbell;
uint32_t slot;
uint32_t nutrs = u->params.nutrs;
UfsRequest *req;
val &= ~u->reg.utrldbr;
if (!val) {
return;
}
doorbell = val;
slot = find_first_bit(&doorbell, nutrs);
while (slot < nutrs) {
req = &u->req_list[slot];
if (req->state == UFS_REQUEST_ERROR) {
trace_ufs_err_utrl_slot_error(req->slot);
return;
}
if (req->state != UFS_REQUEST_IDLE) {
trace_ufs_err_utrl_slot_busy(req->slot);
return;
}
trace_ufs_process_db(slot);
req->state = UFS_REQUEST_READY;
slot = find_next_bit(&doorbell, nutrs, slot + 1);
}
qemu_bh_schedule(u->doorbell_bh);
}
static void ufs_process_uiccmd(UfsHc *u, uint32_t val)
{
trace_ufs_process_uiccmd(val, u->reg.ucmdarg1, u->reg.ucmdarg2,
u->reg.ucmdarg3);
/*
* Only the essential uic commands for running drivers on Linux and Windows
* are implemented.
*/
switch (val) {
case UFS_UIC_CMD_DME_LINK_STARTUP:
u->reg.hcs = FIELD_DP32(u->reg.hcs, HCS, DP, 1);
u->reg.hcs = FIELD_DP32(u->reg.hcs, HCS, UTRLRDY, 1);
u->reg.hcs = FIELD_DP32(u->reg.hcs, HCS, UTMRLRDY, 1);
u->reg.ucmdarg2 = UFS_UIC_CMD_RESULT_SUCCESS;
break;
/* TODO: Revisit it when Power Management is implemented */
case UFS_UIC_CMD_DME_HIBER_ENTER:
u->reg.is = FIELD_DP32(u->reg.is, IS, UHES, 1);
u->reg.hcs = FIELD_DP32(u->reg.hcs, HCS, UPMCRS, UFS_PWR_LOCAL);
u->reg.ucmdarg2 = UFS_UIC_CMD_RESULT_SUCCESS;
break;
case UFS_UIC_CMD_DME_HIBER_EXIT:
u->reg.is = FIELD_DP32(u->reg.is, IS, UHXS, 1);
u->reg.hcs = FIELD_DP32(u->reg.hcs, HCS, UPMCRS, UFS_PWR_LOCAL);
u->reg.ucmdarg2 = UFS_UIC_CMD_RESULT_SUCCESS;
break;
default:
u->reg.ucmdarg2 = UFS_UIC_CMD_RESULT_FAILURE;
}
u->reg.is = FIELD_DP32(u->reg.is, IS, UCCS, 1);
ufs_irq_check(u);
}
static void ufs_write_reg(UfsHc *u, hwaddr offset, uint32_t data, unsigned size)
{
switch (offset) {
case A_IS:
u->reg.is &= ~data;
ufs_irq_check(u);
break;
case A_IE:
u->reg.ie = data;
ufs_irq_check(u);
break;
case A_HCE:
if (!FIELD_EX32(u->reg.hce, HCE, HCE) && FIELD_EX32(data, HCE, HCE)) {
u->reg.hcs = FIELD_DP32(u->reg.hcs, HCS, UCRDY, 1);
u->reg.hce = FIELD_DP32(u->reg.hce, HCE, HCE, 1);
} else if (FIELD_EX32(u->reg.hce, HCE, HCE) &&
!FIELD_EX32(data, HCE, HCE)) {
u->reg.hcs = 0;
u->reg.hce = FIELD_DP32(u->reg.hce, HCE, HCE, 0);
}
break;
case A_UTRLBA:
u->reg.utrlba = data & R_UTRLBA_UTRLBA_MASK;
break;
case A_UTRLBAU:
u->reg.utrlbau = data;
break;
case A_UTRLDBR:
ufs_process_db(u, data);
u->reg.utrldbr |= data;
break;
case A_UTRLRSR:
u->reg.utrlrsr = data;
break;
case A_UTRLCNR:
u->reg.utrlcnr &= ~data;
break;
case A_UTMRLBA:
u->reg.utmrlba = data & R_UTMRLBA_UTMRLBA_MASK;
break;
case A_UTMRLBAU:
u->reg.utmrlbau = data;
break;
case A_UICCMD:
ufs_process_uiccmd(u, data);
break;
case A_UCMDARG1:
u->reg.ucmdarg1 = data;
break;
case A_UCMDARG2:
u->reg.ucmdarg2 = data;
break;
case A_UCMDARG3:
u->reg.ucmdarg3 = data;
break;
case A_UTRLCLR:
case A_UTMRLDBR:
case A_UTMRLCLR:
case A_UTMRLRSR:
trace_ufs_err_unsupport_register_offset(offset);
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;
uint64_t value;
if (addr > sizeof(u->reg) - size) {
trace_ufs_err_invalid_register_offset(addr);
return 0;
}
value = *(uint32_t *)(ptr + addr);
trace_ufs_mmio_read(addr, value, size);
return value;
}
static void ufs_mmio_write(void *opaque, hwaddr addr, uint64_t data,
unsigned size)
{
UfsHc *u = (UfsHc *)opaque;
if (addr > sizeof(u->reg) - size) {
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 = {
.read = ufs_mmio_read,
.write = ufs_mmio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
},
};
static QEMUSGList *ufs_get_sg_list(SCSIRequest *scsi_req)
{
UfsRequest *req = scsi_req->hba_private;
return req->sg;
}
static void ufs_build_upiu_sense_data(UfsRequest *req, SCSIRequest *scsi_req)
{
req->rsp_upiu.sr.sense_data_len = cpu_to_be16(scsi_req->sense_len);
assert(scsi_req->sense_len <= SCSI_SENSE_LEN);
memcpy(req->rsp_upiu.sr.sense_data, scsi_req->sense, scsi_req->sense_len);
}
static void ufs_build_upiu_header(UfsRequest *req, uint8_t trans_type,
uint8_t flags, uint8_t response,
uint8_t scsi_status,
uint16_t data_segment_length)
{
memcpy(&req->rsp_upiu.header, &req->req_upiu.header, sizeof(UtpUpiuHeader));
req->rsp_upiu.header.trans_type = trans_type;
req->rsp_upiu.header.flags = flags;
req->rsp_upiu.header.response = response;
req->rsp_upiu.header.scsi_status = scsi_status;
req->rsp_upiu.header.data_segment_length = cpu_to_be16(data_segment_length);
}
static void ufs_scsi_command_complete(SCSIRequest *scsi_req, size_t resid)
{
UfsRequest *req = scsi_req->hba_private;
int16_t status = scsi_req->status;
uint32_t expected_len = be32_to_cpu(req->req_upiu.sc.exp_data_transfer_len);
uint32_t transfered_len = scsi_req->cmd.xfer - resid;
uint8_t flags = 0, response = UFS_COMMAND_RESULT_SUCESS;
uint16_t data_segment_length;
if (expected_len > transfered_len) {
req->rsp_upiu.sr.residual_transfer_count =
cpu_to_be32(expected_len - transfered_len);
flags |= UFS_UPIU_FLAG_UNDERFLOW;
} else if (expected_len < transfered_len) {
req->rsp_upiu.sr.residual_transfer_count =
cpu_to_be32(transfered_len - expected_len);
flags |= UFS_UPIU_FLAG_OVERFLOW;
}
if (status != 0) {
ufs_build_upiu_sense_data(req, scsi_req);
response = UFS_COMMAND_RESULT_FAIL;
}
data_segment_length = cpu_to_be16(scsi_req->sense_len +
sizeof(req->rsp_upiu.sr.sense_data_len));
ufs_build_upiu_header(req, UFS_UPIU_TRANSACTION_RESPONSE, flags, response,
status, data_segment_length);
ufs_complete_req(req, UFS_REQUEST_SUCCESS);
scsi_req->hba_private = NULL;
scsi_req_unref(scsi_req);
}
static const struct SCSIBusInfo ufs_scsi_info = {
.tcq = true,
.max_target = 0,
.max_lun = UFS_MAX_LUS,
.max_channel = 0,
.get_sg_list = ufs_get_sg_list,
.complete = ufs_scsi_command_complete,
};
static UfsReqResult ufs_exec_scsi_cmd(UfsRequest *req)
{
UfsHc *u = req->hc;
uint8_t lun = req->req_upiu.header.lun;
uint8_t task_tag = req->req_upiu.header.task_tag;
SCSIDevice *dev = NULL;
trace_ufs_exec_scsi_cmd(req->slot, lun, req->req_upiu.sc.cdb[0]);
if (!is_wlun(lun)) {
if (lun >= u->device_desc.number_lu) {
trace_ufs_err_scsi_cmd_invalid_lun(lun);
return UFS_REQUEST_FAIL;
} else if (u->lus[lun] == NULL) {
trace_ufs_err_scsi_cmd_invalid_lun(lun);
return UFS_REQUEST_FAIL;
}
}
switch (lun) {
case UFS_UPIU_REPORT_LUNS_WLUN:
dev = &u->report_wlu->qdev;
break;
case UFS_UPIU_UFS_DEVICE_WLUN:
dev = &u->dev_wlu->qdev;
break;
case UFS_UPIU_BOOT_WLUN:
dev = &u->boot_wlu->qdev;
break;
case UFS_UPIU_RPMB_WLUN:
dev = &u->rpmb_wlu->qdev;
break;
default:
dev = &u->lus[lun]->qdev;
}
SCSIRequest *scsi_req = scsi_req_new(
dev, task_tag, lun, req->req_upiu.sc.cdb, UFS_CDB_SIZE, req);
uint32_t len = scsi_req_enqueue(scsi_req);
if (len) {
scsi_req_continue(scsi_req);
}
return UFS_REQUEST_NO_COMPLETE;
}
static UfsReqResult ufs_exec_nop_cmd(UfsRequest *req)
{
trace_ufs_exec_nop_cmd(req->slot);
ufs_build_upiu_header(req, UFS_UPIU_TRANSACTION_NOP_IN, 0, 0, 0, 0);
return UFS_REQUEST_SUCCESS;
}
/*
* This defines the permission of flags based on their IDN. There are some
* things that are declared read-only, which is inconsistent with the ufs spec,
* because we want to return an error for features that are not yet supported.
*/
static const int flag_permission[UFS_QUERY_FLAG_IDN_COUNT] = {
[UFS_QUERY_FLAG_IDN_FDEVICEINIT] = UFS_QUERY_FLAG_READ | UFS_QUERY_FLAG_SET,
/* Write protection is not supported */
[UFS_QUERY_FLAG_IDN_PERMANENT_WPE] = UFS_QUERY_FLAG_READ,
[UFS_QUERY_FLAG_IDN_PWR_ON_WPE] = UFS_QUERY_FLAG_READ,
[UFS_QUERY_FLAG_IDN_BKOPS_EN] = UFS_QUERY_FLAG_READ | UFS_QUERY_FLAG_SET |
UFS_QUERY_FLAG_CLEAR |
UFS_QUERY_FLAG_TOGGLE,
[UFS_QUERY_FLAG_IDN_LIFE_SPAN_MODE_ENABLE] =
UFS_QUERY_FLAG_READ | UFS_QUERY_FLAG_SET | UFS_QUERY_FLAG_CLEAR |
UFS_QUERY_FLAG_TOGGLE,
/* Purge Operation is not supported */
[UFS_QUERY_FLAG_IDN_PURGE_ENABLE] = UFS_QUERY_FLAG_NONE,
/* Refresh Operation is not supported */
[UFS_QUERY_FLAG_IDN_REFRESH_ENABLE] = UFS_QUERY_FLAG_NONE,
/* Physical Resource Removal is not supported */
[UFS_QUERY_FLAG_IDN_FPHYRESOURCEREMOVAL] = UFS_QUERY_FLAG_READ,
[UFS_QUERY_FLAG_IDN_BUSY_RTC] = UFS_QUERY_FLAG_READ,
[UFS_QUERY_FLAG_IDN_PERMANENTLY_DISABLE_FW_UPDATE] = UFS_QUERY_FLAG_READ,
/* Write Booster is not supported */
[UFS_QUERY_FLAG_IDN_WB_EN] = UFS_QUERY_FLAG_READ,
[UFS_QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN] = UFS_QUERY_FLAG_READ,
[UFS_QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8] = UFS_QUERY_FLAG_READ,
};
static inline QueryRespCode ufs_flag_check_idn_valid(uint8_t idn, int op)
{
if (idn >= UFS_QUERY_FLAG_IDN_COUNT) {
return UFS_QUERY_RESULT_INVALID_IDN;
}
if (!(flag_permission[idn] & op)) {
if (op == UFS_QUERY_FLAG_READ) {
trace_ufs_err_query_flag_not_readable(idn);
return UFS_QUERY_RESULT_NOT_READABLE;
}
trace_ufs_err_query_flag_not_writable(idn);
return UFS_QUERY_RESULT_NOT_WRITEABLE;
}
return UFS_QUERY_RESULT_SUCCESS;
}
static const int attr_permission[UFS_QUERY_ATTR_IDN_COUNT] = {
/* booting is not supported */
[UFS_QUERY_ATTR_IDN_BOOT_LU_EN] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_POWER_MODE] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_ACTIVE_ICC_LVL] =
UFS_QUERY_ATTR_READ | UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_OOO_DATA_EN] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_BKOPS_STATUS] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_PURGE_STATUS] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_MAX_DATA_IN] =
UFS_QUERY_ATTR_READ | UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_MAX_DATA_OUT] =
UFS_QUERY_ATTR_READ | UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_DYN_CAP_NEEDED] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_REF_CLK_FREQ] =
UFS_QUERY_ATTR_READ | UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_CONF_DESC_LOCK] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_MAX_NUM_OF_RTT] =
UFS_QUERY_ATTR_READ | UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_EE_CONTROL] =
UFS_QUERY_ATTR_READ | UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_EE_STATUS] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_SECONDS_PASSED] = UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_CNTX_CONF] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_FFU_STATUS] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_PSA_STATE] = UFS_QUERY_ATTR_READ | UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_PSA_DATA_SIZE] =
UFS_QUERY_ATTR_READ | UFS_QUERY_ATTR_WRITE,
[UFS_QUERY_ATTR_IDN_REF_CLK_GATING_WAIT_TIME] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_CASE_ROUGH_TEMP] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_HIGH_TEMP_BOUND] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_LOW_TEMP_BOUND] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_THROTTLING_STATUS] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_WB_FLUSH_STATUS] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_AVAIL_WB_BUFF_SIZE] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_WB_BUFF_LIFE_TIME_EST] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE] = UFS_QUERY_ATTR_READ,
/* refresh operation is not supported */
[UFS_QUERY_ATTR_IDN_REFRESH_STATUS] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_REFRESH_FREQ] = UFS_QUERY_ATTR_READ,
[UFS_QUERY_ATTR_IDN_REFRESH_UNIT] = UFS_QUERY_ATTR_READ,
};
static inline QueryRespCode ufs_attr_check_idn_valid(uint8_t idn, int op)
{
if (idn >= UFS_QUERY_ATTR_IDN_COUNT) {
return UFS_QUERY_RESULT_INVALID_IDN;
}
if (!(attr_permission[idn] & op)) {
if (op == UFS_QUERY_ATTR_READ) {
trace_ufs_err_query_attr_not_readable(idn);
return UFS_QUERY_RESULT_NOT_READABLE;
}
trace_ufs_err_query_attr_not_writable(idn);
return UFS_QUERY_RESULT_NOT_WRITEABLE;
}
return UFS_QUERY_RESULT_SUCCESS;
}
static QueryRespCode ufs_exec_query_flag(UfsRequest *req, int op)
{
UfsHc *u = req->hc;
uint8_t idn = req->req_upiu.qr.idn;
uint32_t value;
QueryRespCode ret;
ret = ufs_flag_check_idn_valid(idn, op);
if (ret) {
return ret;
}
if (idn == UFS_QUERY_FLAG_IDN_FDEVICEINIT) {
value = 0;
} else if (op == UFS_QUERY_FLAG_READ) {
value = *(((uint8_t *)&u->flags) + idn);
} else if (op == UFS_QUERY_FLAG_SET) {
value = 1;
} else if (op == UFS_QUERY_FLAG_CLEAR) {
value = 0;
} else if (op == UFS_QUERY_FLAG_TOGGLE) {
value = *(((uint8_t *)&u->flags) + idn);
value = !value;
} else {
trace_ufs_err_query_invalid_opcode(op);
return UFS_QUERY_RESULT_INVALID_OPCODE;
}
*(((uint8_t *)&u->flags) + idn) = value;
req->rsp_upiu.qr.value = cpu_to_be32(value);
return UFS_QUERY_RESULT_SUCCESS;
}
static uint32_t ufs_read_attr_value(UfsHc *u, uint8_t idn)
{
switch (idn) {
case UFS_QUERY_ATTR_IDN_BOOT_LU_EN:
return u->attributes.boot_lun_en;
case UFS_QUERY_ATTR_IDN_POWER_MODE:
return u->attributes.current_power_mode;
case UFS_QUERY_ATTR_IDN_ACTIVE_ICC_LVL:
return u->attributes.active_icc_level;
case UFS_QUERY_ATTR_IDN_OOO_DATA_EN:
return u->attributes.out_of_order_data_en;
case UFS_QUERY_ATTR_IDN_BKOPS_STATUS:
return u->attributes.background_op_status;
case UFS_QUERY_ATTR_IDN_PURGE_STATUS:
return u->attributes.purge_status;
case UFS_QUERY_ATTR_IDN_MAX_DATA_IN:
return u->attributes.max_data_in_size;
case UFS_QUERY_ATTR_IDN_MAX_DATA_OUT:
return u->attributes.max_data_out_size;
case UFS_QUERY_ATTR_IDN_DYN_CAP_NEEDED:
return be32_to_cpu(u->attributes.dyn_cap_needed);
case UFS_QUERY_ATTR_IDN_REF_CLK_FREQ:
return u->attributes.ref_clk_freq;
case UFS_QUERY_ATTR_IDN_CONF_DESC_LOCK:
return u->attributes.config_descr_lock;
case UFS_QUERY_ATTR_IDN_MAX_NUM_OF_RTT:
return u->attributes.max_num_of_rtt;
case UFS_QUERY_ATTR_IDN_EE_CONTROL:
return be16_to_cpu(u->attributes.exception_event_control);
case UFS_QUERY_ATTR_IDN_EE_STATUS:
return be16_to_cpu(u->attributes.exception_event_status);
case UFS_QUERY_ATTR_IDN_SECONDS_PASSED:
return be32_to_cpu(u->attributes.seconds_passed);
case UFS_QUERY_ATTR_IDN_CNTX_CONF:
return be16_to_cpu(u->attributes.context_conf);
case UFS_QUERY_ATTR_IDN_FFU_STATUS:
return u->attributes.device_ffu_status;
case UFS_QUERY_ATTR_IDN_PSA_STATE:
return be32_to_cpu(u->attributes.psa_state);
case UFS_QUERY_ATTR_IDN_PSA_DATA_SIZE:
return be32_to_cpu(u->attributes.psa_data_size);
case UFS_QUERY_ATTR_IDN_REF_CLK_GATING_WAIT_TIME:
return u->attributes.ref_clk_gating_wait_time;
case UFS_QUERY_ATTR_IDN_CASE_ROUGH_TEMP:
return u->attributes.device_case_rough_temperaure;
case UFS_QUERY_ATTR_IDN_HIGH_TEMP_BOUND:
return u->attributes.device_too_high_temp_boundary;
case UFS_QUERY_ATTR_IDN_LOW_TEMP_BOUND:
return u->attributes.device_too_low_temp_boundary;
case UFS_QUERY_ATTR_IDN_THROTTLING_STATUS:
return u->attributes.throttling_status;
case UFS_QUERY_ATTR_IDN_WB_FLUSH_STATUS:
return u->attributes.wb_buffer_flush_status;
case UFS_QUERY_ATTR_IDN_AVAIL_WB_BUFF_SIZE:
return u->attributes.available_wb_buffer_size;
case UFS_QUERY_ATTR_IDN_WB_BUFF_LIFE_TIME_EST:
return u->attributes.wb_buffer_life_time_est;
case UFS_QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE:
return be32_to_cpu(u->attributes.current_wb_buffer_size);
case UFS_QUERY_ATTR_IDN_REFRESH_STATUS:
return u->attributes.refresh_status;
case UFS_QUERY_ATTR_IDN_REFRESH_FREQ:
return u->attributes.refresh_freq;
case UFS_QUERY_ATTR_IDN_REFRESH_UNIT:
return u->attributes.refresh_unit;
}
return 0;
}
static void ufs_write_attr_value(UfsHc *u, uint8_t idn, uint32_t value)
{
switch (idn) {
case UFS_QUERY_ATTR_IDN_ACTIVE_ICC_LVL:
u->attributes.active_icc_level = value;
break;
case UFS_QUERY_ATTR_IDN_MAX_DATA_IN:
u->attributes.max_data_in_size = value;
break;
case UFS_QUERY_ATTR_IDN_MAX_DATA_OUT:
u->attributes.max_data_out_size = value;
break;
case UFS_QUERY_ATTR_IDN_REF_CLK_FREQ:
u->attributes.ref_clk_freq = value;
break;
case UFS_QUERY_ATTR_IDN_MAX_NUM_OF_RTT:
u->attributes.max_num_of_rtt = value;
break;
case UFS_QUERY_ATTR_IDN_EE_CONTROL:
u->attributes.exception_event_control = cpu_to_be16(value);
break;
case UFS_QUERY_ATTR_IDN_SECONDS_PASSED:
u->attributes.seconds_passed = cpu_to_be32(value);
break;
case UFS_QUERY_ATTR_IDN_PSA_STATE:
u->attributes.psa_state = value;
break;
case UFS_QUERY_ATTR_IDN_PSA_DATA_SIZE:
u->attributes.psa_data_size = cpu_to_be32(value);
break;
}
}
static QueryRespCode ufs_exec_query_attr(UfsRequest *req, int op)
{
UfsHc *u = req->hc;
uint8_t idn = req->req_upiu.qr.idn;
uint32_t value;
QueryRespCode ret;
ret = ufs_attr_check_idn_valid(idn, op);
if (ret) {
return ret;
}
if (op == UFS_QUERY_ATTR_READ) {
value = ufs_read_attr_value(u, idn);
} else {
value = be32_to_cpu(req->req_upiu.qr.value);
ufs_write_attr_value(u, idn, value);
}
req->rsp_upiu.qr.value = cpu_to_be32(value);
return UFS_QUERY_RESULT_SUCCESS;
}
static const RpmbUnitDescriptor rpmb_unit_desc = {
.length = sizeof(RpmbUnitDescriptor),
.descriptor_idn = 2,
.unit_index = UFS_UPIU_RPMB_WLUN,
.lu_enable = 0,
};
static QueryRespCode ufs_read_unit_desc(UfsRequest *req)
{
UfsHc *u = req->hc;
uint8_t lun = req->req_upiu.qr.index;
if (lun != UFS_UPIU_RPMB_WLUN &&
(lun > UFS_MAX_LUS || u->lus[lun] == NULL)) {
trace_ufs_err_query_invalid_index(req->req_upiu.qr.opcode, lun);
return UFS_QUERY_RESULT_INVALID_INDEX;
}
if (lun == UFS_UPIU_RPMB_WLUN) {
memcpy(&req->rsp_upiu.qr.data, &rpmb_unit_desc, rpmb_unit_desc.length);
} else {
memcpy(&req->rsp_upiu.qr.data, &u->lus[lun]->unit_desc,
sizeof(u->lus[lun]->unit_desc));
}
return UFS_QUERY_RESULT_SUCCESS;
}
static inline StringDescriptor manufacturer_str_desc(void)
{
StringDescriptor desc = {
.length = 0x12,
.descriptor_idn = UFS_QUERY_DESC_IDN_STRING,
};
desc.UC[0] = cpu_to_be16('R');
desc.UC[1] = cpu_to_be16('E');
desc.UC[2] = cpu_to_be16('D');
desc.UC[3] = cpu_to_be16('H');
desc.UC[4] = cpu_to_be16('A');
desc.UC[5] = cpu_to_be16('T');
return desc;
}
static inline StringDescriptor product_name_str_desc(void)
{
StringDescriptor desc = {
.length = 0x22,
.descriptor_idn = UFS_QUERY_DESC_IDN_STRING,
};
desc.UC[0] = cpu_to_be16('Q');
desc.UC[1] = cpu_to_be16('E');
desc.UC[2] = cpu_to_be16('M');
desc.UC[3] = cpu_to_be16('U');
desc.UC[4] = cpu_to_be16(' ');
desc.UC[5] = cpu_to_be16('U');
desc.UC[6] = cpu_to_be16('F');
desc.UC[7] = cpu_to_be16('S');
return desc;
}
static inline StringDescriptor product_rev_level_str_desc(void)
{
StringDescriptor desc = {
.length = 0x0a,
.descriptor_idn = UFS_QUERY_DESC_IDN_STRING,
};
desc.UC[0] = cpu_to_be16('0');
desc.UC[1] = cpu_to_be16('0');
desc.UC[2] = cpu_to_be16('0');
desc.UC[3] = cpu_to_be16('1');
return desc;
}
static const StringDescriptor null_str_desc = {
.length = 0x02,
.descriptor_idn = UFS_QUERY_DESC_IDN_STRING,
};
static QueryRespCode ufs_read_string_desc(UfsRequest *req)
{
UfsHc *u = req->hc;
uint8_t index = req->req_upiu.qr.index;
StringDescriptor desc;
if (index == u->device_desc.manufacturer_name) {
desc = manufacturer_str_desc();
memcpy(&req->rsp_upiu.qr.data, &desc, desc.length);
} else if (index == u->device_desc.product_name) {
desc = product_name_str_desc();
memcpy(&req->rsp_upiu.qr.data, &desc, desc.length);
} else if (index == u->device_desc.serial_number) {
memcpy(&req->rsp_upiu.qr.data, &null_str_desc, null_str_desc.length);
} else if (index == u->device_desc.oem_id) {
memcpy(&req->rsp_upiu.qr.data, &null_str_desc, null_str_desc.length);
} else if (index == u->device_desc.product_revision_level) {
desc = product_rev_level_str_desc();
memcpy(&req->rsp_upiu.qr.data, &desc, desc.length);
} else {
trace_ufs_err_query_invalid_index(req->req_upiu.qr.opcode, index);
return UFS_QUERY_RESULT_INVALID_INDEX;
}
return UFS_QUERY_RESULT_SUCCESS;
}
static inline InterconnectDescriptor interconnect_desc(void)
{
InterconnectDescriptor desc = {
.length = sizeof(InterconnectDescriptor),
.descriptor_idn = UFS_QUERY_DESC_IDN_INTERCONNECT,
};
desc.bcd_unipro_version = cpu_to_be16(0x180);
desc.bcd_mphy_version = cpu_to_be16(0x410);
return desc;
}
static QueryRespCode ufs_read_desc(UfsRequest *req)
{
UfsHc *u = req->hc;
QueryRespCode status;
uint8_t idn = req->req_upiu.qr.idn;
uint16_t length = be16_to_cpu(req->req_upiu.qr.length);
InterconnectDescriptor desc;
switch (idn) {
case UFS_QUERY_DESC_IDN_DEVICE:
memcpy(&req->rsp_upiu.qr.data, &u->device_desc, sizeof(u->device_desc));
status = UFS_QUERY_RESULT_SUCCESS;
break;
case UFS_QUERY_DESC_IDN_UNIT:
status = ufs_read_unit_desc(req);
break;
case UFS_QUERY_DESC_IDN_GEOMETRY:
memcpy(&req->rsp_upiu.qr.data, &u->geometry_desc,
sizeof(u->geometry_desc));
status = UFS_QUERY_RESULT_SUCCESS;
break;
case UFS_QUERY_DESC_IDN_INTERCONNECT: {
desc = interconnect_desc();
memcpy(&req->rsp_upiu.qr.data, &desc, sizeof(InterconnectDescriptor));
status = UFS_QUERY_RESULT_SUCCESS;
break;
}
case UFS_QUERY_DESC_IDN_STRING:
status = ufs_read_string_desc(req);
break;
case UFS_QUERY_DESC_IDN_POWER:
/* mocking of power descriptor is not supported */
memset(&req->rsp_upiu.qr.data, 0, sizeof(PowerParametersDescriptor));
req->rsp_upiu.qr.data[0] = sizeof(PowerParametersDescriptor);
req->rsp_upiu.qr.data[1] = UFS_QUERY_DESC_IDN_POWER;
status = UFS_QUERY_RESULT_SUCCESS;
break;
case UFS_QUERY_DESC_IDN_HEALTH:
/* mocking of health descriptor is not supported */
memset(&req->rsp_upiu.qr.data, 0, sizeof(DeviceHealthDescriptor));
req->rsp_upiu.qr.data[0] = sizeof(DeviceHealthDescriptor);
req->rsp_upiu.qr.data[1] = UFS_QUERY_DESC_IDN_HEALTH;
status = UFS_QUERY_RESULT_SUCCESS;
break;
default:
length = 0;
trace_ufs_err_query_invalid_idn(req->req_upiu.qr.opcode, idn);
status = UFS_QUERY_RESULT_INVALID_IDN;
}
if (length > req->rsp_upiu.qr.data[0]) {
length = req->rsp_upiu.qr.data[0];
}
req->rsp_upiu.qr.opcode = req->req_upiu.qr.opcode;
req->rsp_upiu.qr.idn = req->req_upiu.qr.idn;
req->rsp_upiu.qr.index = req->req_upiu.qr.index;
req->rsp_upiu.qr.selector = req->req_upiu.qr.selector;
req->rsp_upiu.qr.length = cpu_to_be16(length);
return status;
}
static QueryRespCode ufs_exec_query_read(UfsRequest *req)
{
QueryRespCode status;
switch (req->req_upiu.qr.opcode) {
case UFS_UPIU_QUERY_OPCODE_NOP:
status = UFS_QUERY_RESULT_SUCCESS;
break;
case UFS_UPIU_QUERY_OPCODE_READ_DESC:
status = ufs_read_desc(req);
break;
case UFS_UPIU_QUERY_OPCODE_READ_ATTR:
status = ufs_exec_query_attr(req, UFS_QUERY_ATTR_READ);
break;
case UFS_UPIU_QUERY_OPCODE_READ_FLAG:
status = ufs_exec_query_flag(req, UFS_QUERY_FLAG_READ);
break;
default:
trace_ufs_err_query_invalid_opcode(req->req_upiu.qr.opcode);
status = UFS_QUERY_RESULT_INVALID_OPCODE;
break;
}
return status;
}
static QueryRespCode ufs_exec_query_write(UfsRequest *req)
{
QueryRespCode status;
switch (req->req_upiu.qr.opcode) {
case UFS_UPIU_QUERY_OPCODE_NOP:
status = UFS_QUERY_RESULT_SUCCESS;
break;
case UFS_UPIU_QUERY_OPCODE_WRITE_DESC:
/* write descriptor is not supported */
status = UFS_QUERY_RESULT_NOT_WRITEABLE;
break;
case UFS_UPIU_QUERY_OPCODE_WRITE_ATTR:
status = ufs_exec_query_attr(req, UFS_QUERY_ATTR_WRITE);
break;
case UFS_UPIU_QUERY_OPCODE_SET_FLAG:
status = ufs_exec_query_flag(req, UFS_QUERY_FLAG_SET);
break;
case UFS_UPIU_QUERY_OPCODE_CLEAR_FLAG:
status = ufs_exec_query_flag(req, UFS_QUERY_FLAG_CLEAR);
break;
case UFS_UPIU_QUERY_OPCODE_TOGGLE_FLAG:
status = ufs_exec_query_flag(req, UFS_QUERY_FLAG_TOGGLE);
break;
default:
trace_ufs_err_query_invalid_opcode(req->req_upiu.qr.opcode);
status = UFS_QUERY_RESULT_INVALID_OPCODE;
break;
}
return status;
}
static UfsReqResult ufs_exec_query_cmd(UfsRequest *req)
{
uint8_t query_func = req->req_upiu.header.query_func;
uint16_t data_segment_length;
QueryRespCode status;
trace_ufs_exec_query_cmd(req->slot, req->req_upiu.qr.opcode);
if (query_func == UFS_UPIU_QUERY_FUNC_STANDARD_READ_REQUEST) {
status = ufs_exec_query_read(req);
} else if (query_func == UFS_UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST) {
status = ufs_exec_query_write(req);
} else {
status = UFS_QUERY_RESULT_GENERAL_FAILURE;
}
data_segment_length = be16_to_cpu(req->rsp_upiu.qr.length);
ufs_build_upiu_header(req, UFS_UPIU_TRANSACTION_QUERY_RSP, 0, status, 0,
data_segment_length);
if (status != UFS_QUERY_RESULT_SUCCESS) {
return UFS_REQUEST_FAIL;
}
return UFS_REQUEST_SUCCESS;
}
static void ufs_exec_req(UfsRequest *req)
{
UfsReqResult req_result;
if (ufs_dma_read_upiu(req)) {
return;
}
switch (req->req_upiu.header.trans_type) {
case UFS_UPIU_TRANSACTION_NOP_OUT:
req_result = ufs_exec_nop_cmd(req);
break;
case UFS_UPIU_TRANSACTION_COMMAND:
req_result = ufs_exec_scsi_cmd(req);
break;
case UFS_UPIU_TRANSACTION_QUERY_REQ:
req_result = ufs_exec_query_cmd(req);
break;
default:
trace_ufs_err_invalid_trans_code(req->slot,
req->req_upiu.header.trans_type);
req_result = UFS_REQUEST_FAIL;
}
/*
* The ufs_complete_req for scsi commands is handled by the
* ufs_scsi_command_complete() callback function. Therefore, to avoid
* duplicate processing, ufs_complete_req() is not called for scsi commands.
*/
if (req_result != UFS_REQUEST_NO_COMPLETE) {
ufs_complete_req(req, req_result);
}
}
static void ufs_process_req(void *opaque)
{
UfsHc *u = opaque;
UfsRequest *req;
int slot;
for (slot = 0; slot < u->params.nutrs; slot++) {
req = &u->req_list[slot];
if (req->state != UFS_REQUEST_READY) {
continue;
}
trace_ufs_process_req(slot);
req->state = UFS_REQUEST_RUNNING;
ufs_exec_req(req);
}
}
static void ufs_complete_req(UfsRequest *req, UfsReqResult req_result)
{
UfsHc *u = req->hc;
assert(req->state == UFS_REQUEST_RUNNING);
if (req_result == UFS_REQUEST_SUCCESS) {
req->utrd.header.dword_2 = cpu_to_le32(UFS_OCS_SUCCESS);
} else {
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);
}
static void ufs_clear_req(UfsRequest *req)
{
if (req->sg != NULL) {
qemu_sglist_destroy(req->sg);
g_free(req->sg);
req->sg = NULL;
}
memset(&req->utrd, 0, sizeof(req->utrd));
memset(&req->req_upiu, 0, sizeof(req->req_upiu));
memset(&req->rsp_upiu, 0, sizeof(req->rsp_upiu));
}
static void ufs_sendback_req(void *opaque)
{
UfsHc *u = opaque;
UfsRequest *req;
int slot;
for (slot = 0; slot < u->params.nutrs; slot++) {
req = &u->req_list[slot];
if (req->state != UFS_REQUEST_COMPLETE) {
continue;
}
if (ufs_dma_write_upiu(req)) {
req->state = UFS_REQUEST_ERROR;
continue;
}
/*
* TODO: UTP Transfer Request Interrupt Aggregation Control is not yet
* supported
*/
if (le32_to_cpu(req->utrd.header.dword_2) != UFS_OCS_SUCCESS ||
le32_to_cpu(req->utrd.header.dword_0) & UFS_UTP_REQ_DESC_INT_CMD) {
u->reg.is = FIELD_DP32(u->reg.is, IS, UTRCS, 1);
}
u->reg.utrldbr &= ~(1 << slot);
u->reg.utrlcnr |= (1 << slot);
trace_ufs_sendback_req(req->slot);
ufs_clear_req(req);
req->state = UFS_REQUEST_IDLE;
}
ufs_irq_check(u);
}
static bool ufs_check_constraints(UfsHc *u, Error **errp)
{
if (u->params.nutrs > UFS_MAX_NUTRS) {
error_setg(errp, "nutrs must be less than or equal to %d",
UFS_MAX_NUTRS);
return false;
}
if (u->params.nutmrs > UFS_MAX_NUTMRS) {
error_setg(errp, "nutmrs must be less than or equal to %d",
UFS_MAX_NUTMRS);
return false;
}
return true;
}
static void ufs_init_pci(UfsHc *u, PCIDevice *pci_dev)
{
uint8_t *pci_conf = pci_dev->config;
pci_conf[PCI_INTERRUPT_PIN] = 1;
pci_config_set_prog_interface(pci_conf, 0x1);
memory_region_init_io(&u->iomem, OBJECT(u), &ufs_mmio_ops, u, "ufs",
u->reg_size);
pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &u->iomem);
u->irq = pci_allocate_irq(pci_dev);
}
static void ufs_init_state(UfsHc *u)
{
u->req_list = g_new0(UfsRequest, u->params.nutrs);
for (int i = 0; i < u->params.nutrs; i++) {
u->req_list[i].hc = u;
u->req_list[i].slot = i;
u->req_list[i].sg = NULL;
u->req_list[i].state = UFS_REQUEST_IDLE;
}
u->doorbell_bh = qemu_bh_new_guarded(ufs_process_req, u,
&DEVICE(u)->mem_reentrancy_guard);
u->complete_bh = qemu_bh_new_guarded(ufs_sendback_req, u,
&DEVICE(u)->mem_reentrancy_guard);
}
static void ufs_init_hc(UfsHc *u)
{
uint32_t cap = 0;
u->reg_size = pow2ceil(sizeof(UfsReg));
memset(&u->reg, 0, sizeof(u->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));
cap = FIELD_DP32(cap, CAP, AUTOH8, 0);
cap = FIELD_DP32(cap, CAP, 64AS, 1);
cap = FIELD_DP32(cap, CAP, OODDS, 0);
cap = FIELD_DP32(cap, CAP, UICDMETMS, 0);
cap = FIELD_DP32(cap, CAP, CS, 0);
u->reg.cap = cap;
u->reg.ver = UFS_SPEC_VER;
memset(&u->device_desc, 0, sizeof(DeviceDescriptor));
u->device_desc.length = sizeof(DeviceDescriptor);
u->device_desc.descriptor_idn = UFS_QUERY_DESC_IDN_DEVICE;
u->device_desc.device_sub_class = 0x01;
u->device_desc.number_lu = 0x00;
u->device_desc.number_wlu = 0x04;
/* TODO: Revisit it when Power Management is implemented */
u->device_desc.init_power_mode = 0x01; /* Active Mode */
u->device_desc.high_priority_lun = 0x7F; /* Same Priority */
u->device_desc.spec_version = cpu_to_be16(UFS_SPEC_VER);
u->device_desc.manufacturer_name = 0x00;
u->device_desc.product_name = 0x01;
u->device_desc.serial_number = 0x02;
u->device_desc.oem_id = 0x03;
u->device_desc.ud_0_base_offset = 0x16;
u->device_desc.ud_config_p_length = 0x1A;
u->device_desc.device_rtt_cap = 0x02;
u->device_desc.queue_depth = u->params.nutrs;
u->device_desc.product_revision_level = 0x04;
memset(&u->geometry_desc, 0, sizeof(GeometryDescriptor));
u->geometry_desc.length = sizeof(GeometryDescriptor);
u->geometry_desc.descriptor_idn = UFS_QUERY_DESC_IDN_GEOMETRY;
u->geometry_desc.max_number_lu = (UFS_MAX_LUS == 32) ? 0x1 : 0x0;
u->geometry_desc.segment_size = cpu_to_be32(0x2000); /* 4KB */
u->geometry_desc.allocation_unit_size = 0x1; /* 4KB */
u->geometry_desc.min_addr_block_size = 0x8; /* 4KB */
u->geometry_desc.max_in_buffer_size = 0x8;
u->geometry_desc.max_out_buffer_size = 0x8;
u->geometry_desc.rpmb_read_write_size = 0x40;
u->geometry_desc.data_ordering =
0x0; /* out-of-order data transfer is not supported */
u->geometry_desc.max_context_id_number = 0x5;
u->geometry_desc.supported_memory_types = cpu_to_be16(0x8001);
memset(&u->attributes, 0, sizeof(u->attributes));
u->attributes.max_data_in_size = 0x08;
u->attributes.max_data_out_size = 0x08;
u->attributes.ref_clk_freq = 0x01; /* 26 MHz */
/* configure descriptor is not supported */
u->attributes.config_descr_lock = 0x01;
u->attributes.max_num_of_rtt = 0x02;
memset(&u->flags, 0, sizeof(u->flags));
u->flags.permanently_disable_fw_update = 1;
}
static bool ufs_init_wlu(UfsHc *u, UfsWLu **wlu, uint8_t wlun, Error **errp)
{
UfsWLu *new_wlu = UFSWLU(qdev_new(TYPE_UFS_WLU));
qdev_prop_set_uint32(DEVICE(new_wlu), "lun", wlun);
/*
* The well-known lu shares the same bus as the normal lu. If the well-known
* lu writes the same channel value as the normal lu, the report will be
* made not only for the normal lu but also for the well-known lu at
* REPORT_LUN time. To prevent this, the channel value of normal lu is fixed
* to 0 and the channel value of well-known lu is fixed to 1.
*/
qdev_prop_set_uint32(DEVICE(new_wlu), "channel", 1);
if (!qdev_realize_and_unref(DEVICE(new_wlu), BUS(&u->bus), errp)) {
return false;
}
*wlu = new_wlu;
return true;
}
static void ufs_realize(PCIDevice *pci_dev, Error **errp)
{
UfsHc *u = UFS(pci_dev);
if (!ufs_check_constraints(u, errp)) {
return;
}
qbus_init(&u->bus, sizeof(UfsBus), TYPE_UFS_BUS, &pci_dev->qdev,
u->parent_obj.qdev.id);
u->bus.parent_bus.info = &ufs_scsi_info;
ufs_init_state(u);
ufs_init_hc(u);
ufs_init_pci(u, pci_dev);
if (!ufs_init_wlu(u, &u->report_wlu, UFS_UPIU_REPORT_LUNS_WLUN, errp)) {
return;
}
if (!ufs_init_wlu(u, &u->dev_wlu, UFS_UPIU_UFS_DEVICE_WLUN, errp)) {
return;
}
if (!ufs_init_wlu(u, &u->boot_wlu, UFS_UPIU_BOOT_WLUN, errp)) {
return;
}
if (!ufs_init_wlu(u, &u->rpmb_wlu, UFS_UPIU_RPMB_WLUN, errp)) {
return;
}
}
static void ufs_exit(PCIDevice *pci_dev)
{
UfsHc *u = UFS(pci_dev);
if (u->dev_wlu) {
object_unref(OBJECT(u->dev_wlu));
u->dev_wlu = NULL;
}
if (u->report_wlu) {
object_unref(OBJECT(u->report_wlu));
u->report_wlu = NULL;
}
if (u->rpmb_wlu) {
object_unref(OBJECT(u->rpmb_wlu));
u->rpmb_wlu = NULL;
}
if (u->boot_wlu) {
object_unref(OBJECT(u->boot_wlu));
u->boot_wlu = NULL;
}
qemu_bh_delete(u->doorbell_bh);
qemu_bh_delete(u->complete_bh);
for (int i = 0; i < u->params.nutrs; i++) {
ufs_clear_req(&u->req_list[i]);
}
g_free(u->req_list);
}
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_END_OF_LIST(),
};
static const VMStateDescription ufs_vmstate = {
.name = "ufs",
.unmigratable = 1,
};
static void ufs_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
pc->realize = ufs_realize;
pc->exit = ufs_exit;
pc->vendor_id = PCI_VENDOR_ID_REDHAT;
pc->device_id = PCI_DEVICE_ID_REDHAT_UFS;
pc->class_id = PCI_CLASS_STORAGE_UFS;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
dc->desc = "Universal Flash Storage";
device_class_set_props(dc, ufs_props);
dc->vmsd = &ufs_vmstate;
}
static bool ufs_bus_check_address(BusState *qbus, DeviceState *qdev,
Error **errp)
{
SCSIDevice *dev = SCSI_DEVICE(qdev);
UfsBusClass *ubc = UFS_BUS_GET_CLASS(qbus);
UfsHc *u = UFS(qbus->parent);
if (strcmp(object_get_typename(OBJECT(dev)), TYPE_UFS_WLU) == 0) {
if (dev->lun != UFS_UPIU_REPORT_LUNS_WLUN &&
dev->lun != UFS_UPIU_UFS_DEVICE_WLUN &&
dev->lun != UFS_UPIU_BOOT_WLUN && dev->lun != UFS_UPIU_RPMB_WLUN) {
error_setg(errp, "bad well-known lun: %d", dev->lun);
return false;
}
if ((dev->lun == UFS_UPIU_REPORT_LUNS_WLUN && u->report_wlu != NULL) ||
(dev->lun == UFS_UPIU_UFS_DEVICE_WLUN && u->dev_wlu != NULL) ||
(dev->lun == UFS_UPIU_BOOT_WLUN && u->boot_wlu != NULL) ||
(dev->lun == UFS_UPIU_RPMB_WLUN && u->rpmb_wlu != NULL)) {
error_setg(errp, "well-known lun %d already exists", dev->lun);
return false;
}
return true;
}
if (strcmp(object_get_typename(OBJECT(dev)), TYPE_UFS_LU) != 0) {
error_setg(errp, "%s cannot be connected to ufs-bus",
object_get_typename(OBJECT(dev)));
return false;
}
return ubc->parent_check_address(qbus, qdev, errp);
}
static void ufs_bus_class_init(ObjectClass *class, void *data)
{
BusClass *bc = BUS_CLASS(class);
UfsBusClass *ubc = UFS_BUS_CLASS(class);
ubc->parent_check_address = bc->check_address;
bc->check_address = ufs_bus_check_address;
}
static const TypeInfo ufs_info = {
.name = TYPE_UFS,
.parent = TYPE_PCI_DEVICE,
.class_init = ufs_class_init,
.instance_size = sizeof(UfsHc),
.interfaces = (InterfaceInfo[]){ { INTERFACE_PCIE_DEVICE }, {} },
};
static const TypeInfo ufs_bus_info = {
.name = TYPE_UFS_BUS,
.parent = TYPE_SCSI_BUS,
.class_init = ufs_bus_class_init,
.class_size = sizeof(UfsBusClass),
.instance_size = sizeof(UfsBus),
};
static void ufs_register_types(void)
{
type_register_static(&ufs_info);
type_register_static(&ufs_bus_info);
}
type_init(ufs_register_types)
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