This patch enables zoned ufs support.
By setting the LU parameter, each LU can be a host-managed zoned device.
This patch manages the zone condition and write pointer of each zone for
a zoned LU. It supports the report zones and reset write pointer commands
for Zoned LUs.
Signed-off-by: Daejun Park <daejun7.park@samsung.com>
---
hw/ufs/lu.c | 616 ++++++++++++++++++++++++++++++++++++++++++++
hw/ufs/ufs.c | 6 +-
hw/ufs/ufs.h | 32 +++
include/block/ufs.h | 31 +++
4 files changed, 684 insertions(+), 1 deletion(-)
diff --git a/hw/ufs/lu.c b/hw/ufs/lu.c
index 81bfff9b4e..e709b75f38 100644
--- a/hw/ufs/lu.c
+++ b/hw/ufs/lu.c
@@ -20,6 +20,7 @@
#include "ufs.h"
#define SCSI_COMMAND_FAIL (-1)
+#define REPORT_ZONES_DESC_HD_SIZE (64)
static void ufs_build_upiu_sense_data(UfsRequest *req, uint8_t *sense,
uint32_t sense_len)
@@ -59,6 +60,79 @@ static void ufs_build_scsi_response_upiu(UfsRequest *req, uint8_t *sense,
status, data_segment_length);
}
+static inline uint32_t ufs_zone_idx(UfsLu *lu, uint64_t lba)
+{
+ return lba / lu->zone_desc.zone_size;
+}
+
+static inline UfsZoneState *ufs_get_zone_by_lba(UfsLu *lu, uint64_t lba)
+{
+ uint32_t zone_idx = ufs_zone_idx(lu, lba);
+
+ if (zone_idx >= lu->zone_desc.nr_zones) {
+ return NULL;
+ }
+
+ return &lu->zone_array[zone_idx];
+}
+
+static void ufs_assign_zone_cond(UfsLu *lu, UfsZoneState *zone,
+ UfsZoneCond new_cond)
+{
+ switch (zone->cond) {
+ case ZONE_COND_IMPLICIT_OPEN:
+ case ZONE_COND_EXPLICIT_OPEN:
+ lu->zone_desc.nr_open--;
+ break;
+ case ZONE_COND_CLOSED:
+ case ZONE_COND_FULL:
+ break;
+ default:
+ break;
+ }
+
+ zone->cond = new_cond;
+
+ switch (new_cond) {
+ case ZONE_COND_EMPTY:
+ zone->wp = zone->start;
+ break;
+ case ZONE_COND_IMPLICIT_OPEN:
+ case ZONE_COND_EXPLICIT_OPEN:
+ lu->zone_desc.nr_open++;
+ break;
+ case ZONE_COND_CLOSED:
+ case ZONE_COND_FULL:
+ case ZONE_COND_READ_ONLY:
+ break;
+ default:
+ break;
+ }
+}
+
+static inline uint64_t ufs_zone_wr_boundary(UfsLu *lu, UfsZoneState *zone)
+{
+ return zone->start + lu->zone_desc.zone_cap;
+}
+
+static int ufs_full_zone(UfsLu *lu, UfsZoneState *zone)
+{
+ switch (zone->cond) {
+ case ZONE_COND_IMPLICIT_OPEN:
+ case ZONE_COND_EXPLICIT_OPEN:
+ ufs_assign_zone_cond(lu, zone, ZONE_COND_FULL);
+ return 0;
+
+ case ZONE_COND_EMPTY:
+ case ZONE_COND_CLOSED:
+ case ZONE_COND_READ_ONLY:
+ case ZONE_COND_FULL:
+ case ZONE_COND_OFFLINE:
+ default:
+ return SCSI_COMMAND_FAIL;
+ }
+}
+
static void ufs_scsi_command_complete(SCSIRequest *scsi_req, size_t resid)
{
UfsRequest *req = scsi_req->hba_private;
@@ -81,6 +155,29 @@ static QEMUSGList *ufs_get_sg_list(SCSIRequest *scsi_req)
return req->sg;
}
+static int ufs_open_zone(UfsLu *lu, UfsZoneState *zone)
+{
+ switch (zone->cond) {
+ case ZONE_COND_EMPTY:
+ case ZONE_COND_CLOSED:
+ if (lu->zone_desc.nr_open >= lu->zone_desc.max_open) {
+ return SCSI_COMMAND_FAIL;
+ }
+ ufs_assign_zone_cond(lu, zone, ZONE_COND_IMPLICIT_OPEN);
+ return 0;
+
+ case ZONE_COND_IMPLICIT_OPEN:
+ case ZONE_COND_EXPLICIT_OPEN:
+ return 0;
+
+ case ZONE_COND_FULL:
+ case ZONE_COND_READ_ONLY:
+ case ZONE_COND_OFFLINE:
+ default:
+ return SCSI_COMMAND_FAIL;
+ }
+}
+
static const struct SCSIBusInfo ufs_scsi_info = {
.tcq = true,
.max_target = 0,
@@ -190,6 +287,430 @@ static int ufs_emulate_wlun_inquiry(UfsRequest *req, uint8_t *outbuf,
return SCSI_INQUIRY_LEN;
}
+static int ufs_emulate_zbc_vpd_page(UfsLu *lu, UfsRequest *req, uint8_t *outbuf,
+ uint32_t outbuf_len)
+{
+ uint8_t page_code = req->req_upiu.sc.cdb[2];
+ int start, buflen = 0;
+
+ outbuf[buflen++] = TYPE_ZBC;
+ outbuf[buflen++] = page_code;
+ outbuf[buflen++] = 0x00;
+ outbuf[buflen++] = 0x00;
+ start = buflen;
+
+ switch (page_code) {
+ case 0x00: /* Supported page codes, mandatory */
+ {
+ outbuf[buflen++] = 0x00; /* list of supported pages (this page) */
+ outbuf[buflen++] = 0x87; /* mode page policy */
+ outbuf[buflen++] = 0xb1; /* block device characteristics */
+ outbuf[buflen++] = 0xb6; /* ZBC device characteristics */
+ break;
+ }
+ case 0xb6: /* ZBC device characteristics */
+ {
+ outbuf[buflen++] = 0x01; /* Host aware zoned block device model */
+ /* reserved */
+ outbuf[buflen++] = 0x00;
+ outbuf[buflen++] = 0x00;
+ outbuf[buflen++] = 0x00;
+
+ /* optimal number of open sequential write preferred zones */
+ stl_be_p(&outbuf[buflen], 0xffffffff);
+ buflen += 4;
+
+ /* optimal number of non-seq. written seq. write preferred zones */
+ stl_be_p(&outbuf[buflen], 0xffffffff);
+ buflen += 4;
+
+ /* maximum number of open sequential write required zones */
+ if (lu->zone_desc.max_open) {
+ stl_be_p(&outbuf[buflen], lu->zone_desc.max_open);
+ buflen += 4;
+ }
+
+ /* reserved */
+ outbuf[buflen++] = 0x00;
+ outbuf[buflen++] = 0x00;
+ outbuf[buflen++] = 0x00;
+ break;
+ }
+ default:
+ return SCSI_COMMAND_FAIL;
+ }
+ /* done with EVPD */
+ assert(buflen - start <= 255);
+ outbuf[start - 1] = buflen - start;
+ return buflen;
+}
+
+static int ufs_scsi_emulate_zbc_in(UfsLu *lu, UfsRequest *req, uint8_t *outbuf)
+{
+ uint8_t *cdb = req->req_upiu.sc.cdb;
+ uint64_t zone_start_lba, lba,
+ max_lba = be64_to_cpu(lu->unit_desc.logical_block_count);
+ uint32_t alloc_len, rep_opts, buf_offset;
+ bool partial;
+ unsigned int rep_max_zones, num_zones = 0;
+ UfsZoneState *zone;
+
+ if (cdb[1] != ZI_REPORT_ZONES) {
+ return SCSI_COMMAND_FAIL;
+ }
+
+ zone_start_lba = ldq_be_p(&cdb[2]);
+ alloc_len = ldl_be_p(&cdb[10]);
+
+ if (alloc_len == 0) {
+ return 0;
+ }
+ rep_opts = cdb[14] & 0x3f;
+ partial = cdb[14] & 0x80;
+
+ if (zone_start_lba > max_lba) {
+ return SCSI_COMMAND_FAIL;
+ }
+
+ rep_max_zones = alloc_len / REPORT_ZONES_DESC_HD_SIZE;
+ buf_offset = REPORT_ZONES_DESC_HD_SIZE;
+
+ for (lba = zone_start_lba; lba < max_lba; lba = zone->start + zone->size) {
+ zone = ufs_get_zone_by_lba(lu, lba);
+ if (!zone) {
+ break;
+ }
+
+ switch (rep_opts) {
+ case 0x00:
+ /* All zones */
+ break;
+ case 0x01:
+ /* Empty zones */
+ if (zone->cond != ZONE_COND_EMPTY) {
+ continue;
+ }
+ break;
+ case 0x02:
+ /* Implicit open zones */
+ if (zone->cond != ZONE_COND_IMPLICIT_OPEN) {
+ continue;
+ }
+ break;
+ case 0x03:
+ /* Explicit open zones */
+ if (zone->cond != ZONE_COND_EXPLICIT_OPEN) {
+ continue;
+ }
+ break;
+ case 0x04:
+ /* Closed zones */
+ if (zone->cond != ZONE_COND_CLOSED) {
+ continue;
+ }
+ break;
+ case 0x05:
+ /* Full zones */
+ if (zone->cond != ZONE_COND_FULL) {
+ continue;
+ }
+ break;
+ case 0x06:
+ case 0x07:
+ case 0x10:
+ /*
+ * Read-only, offline, reset WP recommended are
+ * not emulated: no zones to report;
+ */
+ continue;
+ case 0x11:
+ /* non-seq-resource set */
+ break;
+ case 0x3e:
+ /* All zones except gap zones. */
+ break;
+ case 0x3f:
+ /* Not write pointer (conventional) zones */
+ break;
+ default:
+ return SCSI_COMMAND_FAIL;
+ }
+
+ if (num_zones < rep_max_zones) {
+ /* Fill zone descriptor */
+ outbuf[0 + buf_offset] = zone->type;
+ outbuf[1 + buf_offset] = zone->cond << 4;
+
+ stq_be_p(&outbuf[8 + buf_offset], zone->size);
+ stq_be_p(&outbuf[16 + buf_offset], zone->start);
+ stq_be_p(&outbuf[24 + buf_offset], zone->wp);
+ buf_offset += REPORT_ZONES_DESC_HD_SIZE;
+ }
+
+ if (partial && num_zones >= rep_max_zones) {
+ break;
+ }
+
+ num_zones++;
+ }
+
+ /* Report header */
+ /* Zone list length. */
+ stl_be_p(&outbuf[0], num_zones * REPORT_ZONES_DESC_HD_SIZE);
+ /* Maximum LBA */
+ stq_be_p(&outbuf[8], be64_to_cpu(lu->unit_desc.logical_block_count) - 1);
+ /* Zone starting LBA granularity. */
+ if (lu->zone_desc.zone_cap < lu->zone_desc.zone_size) {
+ stq_be_p(&outbuf[16], lu->zone_desc.zone_size);
+ }
+
+ return buf_offset;
+}
+
+static void ufs_reset_write_pointer_zone(UfsLu *lu, UfsZoneState *zone)
+{
+ switch (zone->cond) {
+ case ZONE_COND_EMPTY:
+ /* nothing to do */
+ break;
+ case ZONE_COND_IMPLICIT_OPEN:
+ case ZONE_COND_EXPLICIT_OPEN:
+ case ZONE_COND_READ_ONLY:
+ case ZONE_COND_OFFLINE:
+ /* ignore reset write pointer */
+ break;
+ case ZONE_COND_CLOSED:
+ case ZONE_COND_FULL:
+ ufs_assign_zone_cond(lu, zone, ZONE_COND_EMPTY);
+ break;
+ default:
+ break;
+ }
+}
+
+static void ufs_reset_write_pointer_all(UfsLu *lu)
+{
+ unsigned int i;
+
+ for (i = 0; i < lu->zone_desc.nr_zones; i++) {
+ ufs_reset_write_pointer_zone(lu, &lu->zone_array[i]);
+ }
+}
+
+static int ufs_scsi_emulate_zbc_out(UfsLu *lu, UfsRequest *req)
+{
+ uint8_t *cdb = req->req_upiu.sc.cdb;
+ uint64_t zone_start_lba,
+ max_lba = be64_to_cpu(lu->unit_desc.logical_block_count);
+ UfsZoneState *zone;
+
+ switch (cdb[1]) {
+ case ZO_CLOSE_ZONE:
+ break;
+ case ZO_FINISH_ZONE: {
+ zone_start_lba = ldq_be_p(&cdb[2]);
+
+ if (zone_start_lba > max_lba) {
+ /* overflow lba range */
+ return SCSI_COMMAND_FAIL;
+ }
+
+ zone = ufs_get_zone_by_lba(lu, zone_start_lba);
+
+ if (zone_start_lba != zone->start) {
+ /* invalid field error */
+ return SCSI_COMMAND_FAIL;
+ }
+
+ if (ufs_full_zone(lu, zone)) {
+ /* fail to finish zone */
+ return SCSI_COMMAND_FAIL;
+ }
+ break;
+ }
+ case ZO_OPEN_ZONE:
+ /* TODO: support open zone command */
+ break;
+
+ case ZO_RESET_WRITE_POINTER: {
+ bool all = cdb[14] & 0x01;
+
+ if (all) {
+ ufs_reset_write_pointer_all(lu);
+ return 0;
+ }
+
+ zone_start_lba = ldq_be_p(&cdb[2]);
+
+ if (zone_start_lba > max_lba) {
+ /* overflow lba range */
+ return SCSI_COMMAND_FAIL;
+ }
+
+ zone = ufs_get_zone_by_lba(lu, zone_start_lba);
+
+ if ((zone->cond == ZONE_COND_READ_ONLY) ||
+ (zone->cond == ZONE_COND_OFFLINE))
+ return SCSI_COMMAND_FAIL;
+
+ if (zone_start_lba != zone->start) {
+ /* invalid field error */
+ return SCSI_COMMAND_FAIL;
+ }
+
+ ufs_reset_write_pointer_zone(lu, zone);
+ break;
+ }
+ default:
+ return SCSI_COMMAND_FAIL;
+ }
+
+ return 0;
+}
+
+static int ufs_check_zone_state_for_write(UfsZoneState *zone)
+{
+ switch (zone->cond) {
+ case ZONE_COND_EMPTY:
+ case ZONE_COND_IMPLICIT_OPEN:
+ case ZONE_COND_EXPLICIT_OPEN:
+ case ZONE_COND_CLOSED:
+ return 0;
+
+ case ZONE_COND_FULL:
+ case ZONE_COND_READ_ONLY:
+ case ZONE_COND_OFFLINE:
+ default:
+ return SCSI_COMMAND_FAIL;
+ }
+}
+
+/* Unaligned Write fail */
+const struct SCSISense sense_code_UNALIGNED_WRITE = { .key = ILLEGAL_REQUEST,
+ .asc = 0x21,
+ .ascq = 0x04 };
+
+/* Insufficient zone resource fail */
+const struct SCSISense sense_code_INSUFFICENT_ZONE_RESOURCES = {
+ .key = DATA_PROTECT, .asc = 0x0C, .ascq = 0x12
+};
+
+
+static int ufs_check_zone_write(UfsLu *lu, UfsZoneState *zone, uint64_t lba,
+ uint32_t len)
+{
+ if (ufs_check_zone_state_for_write(zone)) {
+ return SCSI_COMMAND_FAIL;
+ }
+
+ if (unlikely((lba + len) > ufs_zone_wr_boundary(lu, zone))) {
+ return SCSI_COMMAND_FAIL;
+ }
+
+ return 0;
+}
+
+static UfsReqResult ufs_emulate_zbc_cmd(UfsLu *lu, UfsRequest *req)
+{
+ g_autofree uint8_t *outbuf = NULL;
+ uint8_t sense_buf[UFS_SENSE_SIZE];
+ uint8_t scsi_status;
+ int len = 0;
+
+ switch (req->req_upiu.sc.cdb[0]) {
+ case WRITE_6:
+ case WRITE_10:
+ scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD));
+ scsi_status = CHECK_CONDITION;
+ break;
+ case WRITE_16: {
+ uint64_t lba = ldq_be_p(&req->req_upiu.sc.cdb[2]);
+ uint32_t req_len = ldl_be_p(&req->req_upiu.sc.cdb[10]);
+ UfsZoneState *zone = ufs_get_zone_by_lba(lu, lba);
+
+ if (unlikely(lba != zone->wp)) {
+ /* unaligned write error */
+ scsi_build_sense(sense_buf, SENSE_CODE(UNALIGNED_WRITE));
+ scsi_status = CHECK_CONDITION;
+ break;
+ }
+
+ len = ufs_check_zone_write(lu, zone, lba, req_len);
+ if (len == SCSI_COMMAND_FAIL) {
+ scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD));
+ scsi_status = CHECK_CONDITION;
+ break;
+ }
+
+ len = ufs_open_zone(lu, zone);
+ if (len == SCSI_COMMAND_FAIL) {
+ scsi_build_sense(sense_buf, SENSE_CODE(INSUFFICENT_ZONE_RESOURCES));
+ scsi_status = CHECK_CONDITION;
+ break;
+ }
+
+ zone->wp += req_len;
+
+ if (zone->wp == ufs_zone_wr_boundary(lu, zone)) {
+ ufs_full_zone(lu, zone);
+ }
+ return UFS_REQUEST_NO_COMPLETE;
+ }
+ case ZBC_IN:
+ outbuf = g_new0(uint8_t, req->data_len + REPORT_ZONES_DESC_HD_SIZE);
+ len = ufs_scsi_emulate_zbc_in(lu, req, outbuf);
+ if (len == SCSI_COMMAND_FAIL) {
+ scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD));
+ scsi_status = CHECK_CONDITION;
+ } else {
+ scsi_status = GOOD;
+ }
+ break;
+ case ZBC_OUT:
+ len = ufs_scsi_emulate_zbc_out(lu, req);
+ if (len == SCSI_COMMAND_FAIL) {
+ scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD));
+ scsi_status = CHECK_CONDITION;
+ } else {
+ scsi_status = GOOD;
+ }
+ break;
+ case INQUIRY:
+ /* bypass standard inquiry */
+ if (!(req->req_upiu.sc.cdb[1] & 0x1)) {
+ return UFS_REQUEST_NO_COMPLETE;
+ }
+ /* processing only ZBC related page codes */
+ if (!(req->req_upiu.sc.cdb[2] == 0x00) &&
+ !(req->req_upiu.sc.cdb[2] == 0xb6)) {
+ return UFS_REQUEST_NO_COMPLETE;
+ }
+ /* Vital product data */
+ outbuf = g_new0(uint8_t, UFS_BLOCK_SIZE);
+ len = ufs_emulate_zbc_vpd_page(lu, req, outbuf, UFS_BLOCK_SIZE);
+ if (len == SCSI_COMMAND_FAIL) {
+ scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD));
+ scsi_status = CHECK_CONDITION;
+ } else {
+ scsi_status = GOOD;
+ }
+ break;
+ default:
+ return UFS_REQUEST_NO_COMPLETE;
+ }
+
+ len = MIN(len, (int)req->data_len);
+ if (scsi_status == GOOD && len > 0 &&
+ dma_buf_read(outbuf, len, NULL, req->sg, MEMTXATTRS_UNSPECIFIED) !=
+ MEMTX_OK) {
+ return UFS_REQUEST_FAIL;
+ }
+
+ ufs_build_scsi_response_upiu(req, sense_buf, sizeof(sense_buf), len,
+ scsi_status);
+
+ return UFS_REQUEST_SUCCESS;
+}
static UfsReqResult ufs_emulate_scsi_cmd(UfsLu *lu, UfsRequest *req)
{
@@ -252,6 +773,13 @@ static UfsReqResult ufs_process_scsi_cmd(UfsLu *lu, UfsRequest *req)
{
uint8_t task_tag = req->req_upiu.header.task_tag;
+ if (lu->zone_enabled) {
+ UfsReqResult result = ufs_emulate_zbc_cmd(lu, req);
+ /* UFS_REQUEST_NO_COMPLETE continues command processing */
+ if (result != UFS_REQUEST_NO_COMPLETE) {
+ return result;
+ }
+ }
/*
* Each ufs-lu has its own independent virtual SCSI bus. Therefore, we can't
* use scsi_target_emulate_report_luns() which gets all lu information over
@@ -277,6 +805,11 @@ static UfsReqResult ufs_process_scsi_cmd(UfsLu *lu, UfsRequest *req)
static Property ufs_lu_props[] = {
DEFINE_PROP_DRIVE("drive", UfsLu, conf.blk),
DEFINE_PROP_UINT8("lun", UfsLu, lun, 0),
+ DEFINE_PROP_BOOL("zoned", UfsLu, params.zoned, false),
+ DEFINE_PROP_SIZE("zoned.zone_size", UfsLu, params.zone_size,
+ UFS_DEFAULT_ZONE_SIZE /* 128MiB */),
+ DEFINE_PROP_SIZE("zoned.zone_capacity", UfsLu, params.zone_cap, 0),
+ DEFINE_PROP_UINT32("zoned.max_open", UfsLu, params.zone_max_open, 6),
DEFINE_PROP_END_OF_LIST(),
};
@@ -310,12 +843,84 @@ void ufs_init_wlu(UfsLu *wlu, uint8_t wlun)
wlu->scsi_op = &ufs_emulate_scsi_cmd;
}
+static void ufs_zoned_init_state(UfsLu *lu)
+{
+ uint64_t start = 0, zone_size = lu->zone_desc.zone_size;
+ uint64_t nblocks = be64_to_cpu(lu->unit_desc.logical_block_count);
+ UfsZoneState *zone;
+ int i;
+
+ lu->zone_array = g_new0(UfsZoneState, lu->zone_desc.nr_zones);
+ zone = lu->zone_array;
+
+ for (i = 0; i < lu->zone_desc.nr_zones; i++, zone++) {
+ if (start + zone_size > nblocks) {
+ zone_size = nblocks - start;
+ }
+ zone->id = i;
+ /* SEQUENTIAL WRITE REQUIRED */
+ zone->type = 0x2;
+ zone->cond = ZONE_COND_EMPTY;
+ zone->start = start;
+ zone->size = zone_size;
+ zone->wp = start;
+
+ start += zone_size;
+ }
+}
+
+static void ufs_lu_init_zoned(UfsLu *lu)
+{
+ ufs_zoned_init_state(lu);
+
+ lu->zone_desc.nr_open = 0;
+ lu->zone_desc.max_open = lu->params.zone_max_open;
+ lu->zone_enabled = true;
+
+ /* Host-managed zoned block device */
+ lu->scsi_dev->type = TYPE_ZBC;
+}
+
+static int ufs_lu_zoned_check_calc_geometry(UfsLu *lu, Error **errp)
+{
+ uint64_t zone_size = lu->params.zone_size, zone_cap = lu->params.zone_cap,
+ nr_blocks;
+
+ if (!zone_cap) {
+ zone_cap = zone_size;
+ }
+
+ if (zone_cap > zone_size) {
+ error_setg(errp,
+ "zone capacity %" PRIu64 "B exceeds "
+ "zone size %" PRIu64 "B",
+ zone_cap, zone_size);
+ return -1;
+ }
+
+ nr_blocks = be64_to_cpu(lu->unit_desc.logical_block_count);
+ lu->zone_desc.zone_size = zone_size / UFS_BLOCK_SIZE;
+ lu->zone_desc.zone_cap = zone_cap / UFS_BLOCK_SIZE;
+ lu->zone_desc.nr_zones = DIV_ROUND_UP(nr_blocks, lu->zone_desc.zone_size);
+
+ if (!lu->zone_desc.nr_zones) {
+ error_setg(errp,
+ "insufficient drive capacity, must be at least the size "
+ "of one zone (%" PRIu64 "B)",
+ zone_size);
+ return -1;
+ }
+
+ return 0;
+}
+
static void ufs_init_lu(UfsLu *lu)
{
BlockBackend *blk = lu->conf.blk;
int64_t brdv_len = blk_getlength(blk);
memset(&lu->unit_desc, 0, sizeof(lu->unit_desc));
+ lu->zone_enabled = false;
lu->unit_desc.length = sizeof(UnitDescriptor);
lu->unit_desc.descriptor_idn = UFS_QUERY_DESC_IDN_UNIT;
lu->unit_desc.lu_enable = 0x01;
@@ -408,6 +1013,13 @@ static void ufs_lu_realize(DeviceState *dev, Error **errp)
}
ufs_init_scsi_device(lu, blk, errp);
+
+ if (lu->params.zoned) {
+ if (ufs_lu_zoned_check_calc_geometry(lu, errp)) {
+ return;
+ }
+ ufs_lu_init_zoned(lu);
+ }
}
static void ufs_lu_unrealize(DeviceState *dev)
@@ -418,6 +1030,10 @@ static void ufs_lu_unrealize(DeviceState *dev)
object_unref(OBJECT(lu->scsi_dev));
lu->scsi_dev = NULL;
}
+ if (lu->zone_enabled) {
+ /* release zoned ufs structure */
+ g_free(lu->zone_array);
+ }
}
static void ufs_lu_class_init(ObjectClass *oc, void *data)
diff --git a/hw/ufs/ufs.c b/hw/ufs/ufs.c
index 68c5f1f6c9..15faa634e4 100644
--- a/hw/ufs/ufs.c
+++ b/hw/ufs/ufs.c
@@ -18,7 +18,11 @@
* -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>
+ * -device ufs-lu,drive=<drive_id>,bus=<bus_name>, \
+ * zoned=<true|false[optional]>,
+ * zoned.zone_size=<N[optional]>, \
+ * zoned.zone_capacity=<N[optional]>, \
+ * zoned.max_open=<N[optional]>
*/
#include "qemu/osdep.h"
diff --git a/hw/ufs/ufs.h b/hw/ufs/ufs.h
index 8fda94f4ef..205df4d7d2 100644
--- a/hw/ufs/ufs.h
+++ b/hw/ufs/ufs.h
@@ -15,6 +15,26 @@
#include "hw/scsi/scsi.h"
#include "block/ufs.h"
+typedef struct UfsZoneState {
+ int id;
+ int type;
+ UfsZoneCond cond;
+ uint64_t start;
+ uint64_t size;
+ uint64_t wp;
+} UfsZoneState;
+
+/* For Zoned Ufs */
+typedef struct UfsZoneDescriptor {
+ unsigned int zone_cap;
+ unsigned int zone_size;
+ unsigned int nr_zones;
+ unsigned int nr_open;
+ unsigned int max_open;
+} UfsZoneDescriptor;
+
+#define UFS_DEFAULT_ZONE_SIZE (128 * MiB)
+
#define UFS_MAX_LUS 32
#define UFS_BLOCK_SIZE_SHIFT 12
#define UFS_BLOCK_SIZE (1 << UFS_BLOCK_SIZE_SHIFT)
@@ -62,6 +82,13 @@ typedef struct UfsRequest {
struct UfsLu;
typedef UfsReqResult (*UfsScsiOp)(struct UfsLu *, UfsRequest *);
+typedef struct UfsLuParams {
+ bool zoned;
+ uint64_t zone_cap;
+ uint64_t zone_size;
+ uint32_t zone_max_open;
+} UfsLuParams;
+
typedef struct UfsLu {
DeviceState qdev;
uint8_t lun;
@@ -70,6 +97,11 @@ typedef struct UfsLu {
SCSIDevice *scsi_dev;
BlockConf conf;
UfsScsiOp scsi_op;
+ /* For Zoned Ufs */
+ UfsLuParams params;
+ bool zone_enabled;
+ UfsZoneDescriptor zone_desc;
+ UfsZoneState *zone_array;
} UfsLu;
typedef struct UfsParams {
diff --git a/include/block/ufs.h b/include/block/ufs.h
index 0b6ec0814d..d4d81d7845 100644
--- a/include/block/ufs.h
+++ b/include/block/ufs.h
@@ -547,6 +547,37 @@ enum {
UFS_MASK_OCS = 0x0F,
};
+/* enumeration names taken from table 26, zbcr05 */
+typedef enum UfsZoneCond {
+ ZBC_NOT_WRITE_POINTER = 0x0,
+ ZONE_COND_EMPTY = 0x1,
+ ZONE_COND_IMPLICIT_OPEN = 0x2,
+ ZONE_COND_EXPLICIT_OPEN = 0x3,
+ ZONE_COND_CLOSED = 0x4,
+ ZONE_COND_READ_ONLY = 0xd,
+ ZONE_COND_FULL = 0xe,
+ ZONE_COND_OFFLINE = 0xf,
+} UfsZoneCond;
+
+/*
+ * ZBC_IN/OUT codes
+ */
+
+#define ZBC_OUT 0x94
+#define ZBC_IN 0x95
+
+typedef enum ZbcInCodes {
+ ZI_REPORT_ZONES = 0x00,
+ /* Support only ZI_REPORT_ZONES */
+} ZbcInCodes;
+
+typedef enum ZbcOutCodes {
+ ZO_CLOSE_ZONE = 0x01,
+ ZO_FINISH_ZONE = 0x02,
+ ZO_OPEN_ZONE = 0x03,
+ ZO_RESET_WRITE_POINTER = 0x04,
+} ZbcOutCodes;
+
/*
* struct UfshcdSgEntry - UFSHCI PRD Entry
* @addr: Physical address; DW-0 and DW-1.
--
2.25.1On 12/8/2023 3:13 PM, Daejun Park wrote: > This patch enables zoned ufs support. > > By setting the LU parameter, each LU can be a host-managed zoned device. > This patch manages the zone condition and write pointer of each zone for > a zoned LU. It supports the report zones and reset write pointer commands > for Zoned LUs. > > Signed-off-by: Daejun Park <daejun7.park@samsung.com> Reviewed-by: Jeuk Kim <jeuk20.kim@samsung.com>
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