static int sg_version_num = 30534; /* 2 digits for each component */
-#define SNTI_TRANSLATION_SUCCESS 0
-#define SNTI_INTERNAL_ERROR 1
-
/* VPD Page Codes */
#define VPD_SUPPORTED_PAGES 0x00
#define VPD_SERIAL_NUMBER 0x80
static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from,
unsigned long n)
{
- int res = SNTI_TRANSLATION_SUCCESS;
- unsigned long not_copied;
int i;
void *index = from;
size_t remaining = n;
struct sg_iovec sgl;
for (i = 0; i < hdr->iovec_count; i++) {
- not_copied = copy_from_user(&sgl, hdr->dxferp +
+ if (copy_from_user(&sgl, hdr->dxferp +
i * sizeof(struct sg_iovec),
- sizeof(struct sg_iovec));
- if (not_copied)
+ sizeof(struct sg_iovec)))
return -EFAULT;
xfer_len = min(remaining, sgl.iov_len);
- not_copied = copy_to_user(sgl.iov_base, index,
- xfer_len);
- if (not_copied) {
- res = -EFAULT;
- break;
- }
+ if (copy_to_user(sgl.iov_base, index, xfer_len))
+ return -EFAULT;
+
index += xfer_len;
remaining -= xfer_len;
if (remaining == 0)
break;
}
- return res;
+ return 0;
}
- not_copied = copy_to_user(hdr->dxferp, from, n);
- if (not_copied)
- res = -EFAULT;
- return res;
+
+ if (copy_to_user(hdr->dxferp, from, n))
+ return -EFAULT;
+ return 0;
}
/* Copy data from userspace memory */
static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to,
unsigned long n)
{
- int res = SNTI_TRANSLATION_SUCCESS;
- unsigned long not_copied;
int i;
void *index = to;
size_t remaining = n;
struct sg_iovec sgl;
for (i = 0; i < hdr->iovec_count; i++) {
- not_copied = copy_from_user(&sgl, hdr->dxferp +
+ if (copy_from_user(&sgl, hdr->dxferp +
i * sizeof(struct sg_iovec),
- sizeof(struct sg_iovec));
- if (not_copied)
+ sizeof(struct sg_iovec)))
return -EFAULT;
xfer_len = min(remaining, sgl.iov_len);
- not_copied = copy_from_user(index, sgl.iov_base,
- xfer_len);
- if (not_copied) {
- res = -EFAULT;
- break;
- }
+ if (copy_from_user(index, sgl.iov_base, xfer_len))
+ return -EFAULT;
index += xfer_len;
remaining -= xfer_len;
if (remaining == 0)
break;
}
- return res;
+ return 0;
}
- not_copied = copy_from_user(to, hdr->dxferp, n);
- if (not_copied)
- res = -EFAULT;
- return res;
+ if (copy_from_user(to, hdr->dxferp, n))
+ return -EFAULT;
+ return 0;
}
/* Status/Sense Buffer Writeback */
static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key,
u8 asc, u8 ascq)
{
- int res = SNTI_TRANSLATION_SUCCESS;
u8 xfer_len;
u8 resp[DESC_FMT_SENSE_DATA_SIZE];
xfer_len = min_t(u8, hdr->mx_sb_len, DESC_FMT_SENSE_DATA_SIZE);
hdr->sb_len_wr = xfer_len;
if (copy_to_user(hdr->sbp, resp, xfer_len) > 0)
- res = -EFAULT;
+ return -EFAULT;
}
- return res;
+ return 0;
}
+/*
+ * Take a status code from a lowlevel routine, and if it was a positive NVMe
+ * error code update the sense data based on it. In either case the passed
+ * in value is returned again, unless an -EFAULT from copy_to_user overrides
+ * it.
+ */
static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc)
{
u8 status, sense_key, asc, ascq;
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
/* For non-nvme (Linux) errors, simply return the error code */
if (nvme_sc < 0)
return nvme_sc;
/* Mask DNR, More, and reserved fields */
- nvme_sc &= 0x7FF;
-
- switch (nvme_sc) {
+ switch (nvme_sc & 0x7FF) {
/* Generic Command Status */
case NVME_SC_SUCCESS:
status = SAM_STAT_GOOD;
}
res = nvme_trans_completion(hdr, status, sense_key, asc, ascq);
-
- return res;
+ return res ? res : nvme_sc;
}
/* INQUIRY Helper Functions */
dma_addr_t dma_addr;
void *mem;
struct nvme_id_ns *id_ns;
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
int xfer_len;
u8 resp_data_format = 0x02;
/* nvme ns identify - use DPS value for PROTECT field */
nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
res = nvme_trans_status_code(hdr, nvme_sc);
- /*
- * If nvme_sc was -ve, res will be -ve here.
- * If nvme_sc was +ve, the status would bace been translated, and res
- * can only be 0 or -ve.
- * - If 0 && nvme_sc > 0, then go into next if where res gets nvme_sc
- * - If -ve, return because its a Linux error.
- */
if (res)
goto out_free;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_free;
- }
+
id_ns = mem;
(id_ns->dps) ? (protect = 0x01) : (protect = 0);
struct sg_io_hdr *hdr, u8 *inq_response,
int alloc_len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
int xfer_len;
memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
inq_response[9] = INQ_BDEV_LIMITS_PAGE;
xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
- res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- return res;
+ return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
}
static int nvme_trans_unit_serial_page(struct nvme_ns *ns,
int alloc_len)
{
struct nvme_dev *dev = ns->dev;
- int res = SNTI_TRANSLATION_SUCCESS;
int xfer_len;
memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
strncpy(&inq_response[4], dev->serial, INQ_SERIAL_NUMBER_LENGTH);
xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
- res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- return res;
+ return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
}
static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
struct nvme_dev *dev = ns->dev;
dma_addr_t dma_addr;
void *mem;
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
int xfer_len;
__be32 tmp_id = cpu_to_be32(ns->ns_id);
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_free;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_free;
- }
if (readl(&dev->bar->vs) >= NVME_VS(1, 2)) {
if (bitmap_empty(eui, len * 8)) {
int alloc_len)
{
u8 *inq_response;
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
struct nvme_dev *dev = ns->dev;
dma_addr_t dma_addr;
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_free;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_free;
- }
+
id_ns = mem;
spt = spt_lut[(id_ns->dpc) & 0x07] << 3;
(id_ns->dps) ? (protect = 0x01) : (protect = 0);
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_free;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_free;
- }
+
id_ctrl = mem;
v_sup = id_ctrl->vwc;
int alloc_len)
{
u8 *inq_response;
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int xfer_len;
inq_response = kzalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL);
static int nvme_trans_log_supp_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
int alloc_len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int xfer_len;
u8 *log_response;
static int nvme_trans_log_info_exceptions(struct nvme_ns *ns,
struct sg_io_hdr *hdr, int alloc_len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int xfer_len;
u8 *log_response;
struct nvme_command c;
static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr,
int alloc_len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int xfer_len;
u8 *log_response;
struct nvme_command c;
{
/* Quick check to make sure I don't stomp on my own memory... */
if ((cdb10 && len < 8) || (!cdb10 && len < 4))
- return SNTI_INTERNAL_ERROR;
+ return -EINVAL;
if (cdb10) {
resp[0] = (mode_data_length & 0xFF00) >> 8;
resp[3] = (blk_desc_len & 0x00FF);
}
- return SNTI_TRANSLATION_SUCCESS;
+ return 0;
}
static int nvme_trans_fill_blk_desc(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *resp, int len, u8 llbaa)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
struct nvme_dev *dev = ns->dev;
dma_addr_t dma_addr;
u32 lba_length;
if (llbaa == 0 && len < MODE_PAGE_BLK_DES_LEN)
- return SNTI_INTERNAL_ERROR;
+ return -EINVAL;
else if (llbaa > 0 && len < MODE_PAGE_LLBAA_BLK_DES_LEN)
- return SNTI_INTERNAL_ERROR;
+ return -EINVAL;
mem = dma_alloc_coherent(dev->dev, sizeof(struct nvme_id_ns),
&dma_addr, GFP_KERNEL);
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
+
id_ns = mem;
flbas = (id_ns->flbas) & 0x0F;
lba_length = (1 << (id_ns->lbaf[flbas].ds));
int len)
{
if (len < MODE_PAGE_CONTROL_LEN)
- return SNTI_INTERNAL_ERROR;
+ return -EINVAL;
resp[0] = MODE_PAGE_CONTROL;
resp[1] = MODE_PAGE_CONTROL_LEN_FIELD;
resp[9] = 0xFF;
/* Bytes 10,11: Extended selftest completion time = 0x0000 */
- return SNTI_TRANSLATION_SUCCESS;
+ return 0;
}
static int nvme_trans_fill_caching_page(struct nvme_ns *ns,
struct sg_io_hdr *hdr,
u8 *resp, int len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res = 0;
int nvme_sc;
struct nvme_dev *dev = ns->dev;
u32 feature_resp;
u8 vwc;
if (len < MODE_PAGE_CACHING_LEN)
- return SNTI_INTERNAL_ERROR;
+ return -EINVAL;
nvme_sc = nvme_get_features(dev, NVME_FEAT_VOLATILE_WC, 0, 0,
&feature_resp);
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
- goto out;
- if (nvme_sc) {
- res = nvme_sc;
- goto out;
- }
+ return res;
+
vwc = feature_resp & 0x00000001;
resp[0] = MODE_PAGE_CACHING;
resp[1] = MODE_PAGE_CACHING_LEN_FIELD;
resp[2] = vwc << 2;
-
- out:
- return res;
+ return 0;
}
static int nvme_trans_fill_pow_cnd_page(struct nvme_ns *ns,
struct sg_io_hdr *hdr, u8 *resp,
int len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
-
if (len < MODE_PAGE_POW_CND_LEN)
- return SNTI_INTERNAL_ERROR;
+ return -EINVAL;
resp[0] = MODE_PAGE_POWER_CONDITION;
resp[1] = MODE_PAGE_POW_CND_LEN_FIELD;
/* All other bytes are zero */
- return res;
+ return 0;
}
static int nvme_trans_fill_inf_exc_page(struct nvme_ns *ns,
struct sg_io_hdr *hdr, u8 *resp,
int len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
-
if (len < MODE_PAGE_INF_EXC_LEN)
- return SNTI_INTERNAL_ERROR;
+ return -EINVAL;
resp[0] = MODE_PAGE_INFO_EXCEP;
resp[1] = MODE_PAGE_INF_EXC_LEN_FIELD;
resp[2] = 0x88;
/* All other bytes are zero */
- return res;
+ return 0;
}
static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *resp, int len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
u16 mode_pages_offset_1 = 0;
u16 mode_pages_offset_2, mode_pages_offset_3, mode_pages_offset_4;
res = nvme_trans_fill_caching_page(ns, hdr, &resp[mode_pages_offset_1],
MODE_PAGE_CACHING_LEN);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
+ if (res)
+ return res;
res = nvme_trans_fill_control_page(ns, hdr, &resp[mode_pages_offset_2],
MODE_PAGE_CONTROL_LEN);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
+ if (res)
+ return res;
res = nvme_trans_fill_pow_cnd_page(ns, hdr, &resp[mode_pages_offset_3],
MODE_PAGE_POW_CND_LEN);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
- res = nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4],
+ if (res)
+ return res;
+ return nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4],
MODE_PAGE_INF_EXC_LEN);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
-
- out:
- return res;
}
static inline int nvme_trans_get_blk_desc_len(u8 dbd, u8 llbaa)
struct sg_io_hdr *hdr, u8 *, int),
u16 mode_pages_tot_len)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int xfer_len;
u8 *response;
u8 dbd, llbaa;
res = nvme_trans_fill_mode_parm_hdr(&response[0], mph_size, cdb10,
llbaa, mode_data_length, blk_desc_len);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out_free;
if (blk_desc_len > 0) {
res = nvme_trans_fill_blk_desc(ns, hdr,
&response[blk_desc_offset],
blk_desc_len, llbaa);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out_free;
}
res = mode_page_fill_func(ns, hdr, &response[mode_pages_offset_1],
mode_pages_tot_len);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out_free;
xfer_len = min(alloc_len, resp_size);
static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 pc, u8 pcmod, u8 start)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
struct nvme_dev *dev = ns->dev;
dma_addr_t dma_addr;
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
+
id_ctrl = mem;
lowest_pow_st = max(POWER_STATE_0, (int)(id_ctrl->npss - 1));
nvme_sc = nvme_set_features(dev, NVME_FEAT_POWER_MGMT, ps_desired, 0,
NULL);
res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc)
- res = nvme_sc;
+
out_dma:
dma_free_coherent(dev->dev, sizeof(struct nvme_id_ctrl), mem, dma_addr);
out:
{
struct nvme_command c;
int nvme_sc;
- int res;
memset(&c, 0, sizeof(c));
c.common.opcode = nvme_admin_activate_fw;
c.common.cdw10[0] = cpu_to_le32(buffer_id | NVME_FWACT_REPL_ACTV);
nvme_sc = nvme_submit_sync_cmd(ns->queue, &c);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- return res;
- return nvme_sc;
+ return nvme_trans_status_code(hdr, nvme_sc);
}
static int nvme_trans_send_download_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 opcode, u32 tot_len, u32 offset,
u8 buffer_id)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
struct nvme_dev *dev = ns->dev;
struct nvme_command c;
nvme_sc = nvme_submit_sync_cmd(dev->admin_q, &c);
res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_unmap;
- if (nvme_sc)
- res = nvme_sc;
out_unmap:
nvme_unmap_user_pages(dev, DMA_TO_DEVICE, iod);
static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *mode_page, u8 page_code)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res = 0;
int nvme_sc;
struct nvme_dev *dev = ns->dev;
unsigned dword11;
nvme_sc = nvme_set_features(dev, NVME_FEAT_VOLATILE_WC, dword11,
0, NULL);
res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- break;
- if (nvme_sc) {
- res = nvme_sc;
- break;
- }
break;
case MODE_PAGE_CONTROL:
break;
ILLEGAL_REQUEST,
SCSI_ASC_INVALID_PARAMETER,
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- if (!res)
- res = SNTI_INTERNAL_ERROR;
break;
}
break;
res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- if (!res)
- res = SNTI_INTERNAL_ERROR;
break;
}
u8 *cmd, u16 parm_list_len, u8 pf,
u8 sp, u8 cdb10)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
u8 *parm_list;
u16 bd_len;
u8 llbaa = 0;
}
res = nvme_trans_copy_from_user(hdr, parm_list, parm_list_len);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out_mem;
nvme_trans_modesel_get_bd_len(parm_list, cdb10, &bd_len, &llbaa);
mp_size = parm_list[index + 1] + 2;
res = nvme_trans_modesel_get_mp(ns, hdr, &parm_list[index],
page_code);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
break;
index += mp_size;
} while (index < parm_list_len);
static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns,
struct sg_io_hdr *hdr)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res = 0;
int nvme_sc;
struct nvme_dev *dev = ns->dev;
dma_addr_t dma_addr;
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
+
id_ns = mem;
if (ns->mode_select_num_blocks == 0)
static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr *hdr, u8 len,
u8 format_prot_info, u8 *nvme_pf_code)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
u8 *parm_list;
u8 pf_usage, pf_code;
goto out;
}
res = nvme_trans_copy_from_user(hdr, parm_list, len);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out_mem;
if ((parm_list[FORMAT_UNIT_IMMED_OFFSET] &
static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 prot_info)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
struct nvme_dev *dev = ns->dev;
dma_addr_t dma_addr;
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
+
id_ns = mem;
flbas = (id_ns->flbas) & 0x0F;
nlbaf = id_ns->nlbaf;
nvme_sc = nvme_submit_sync_cmd(dev->admin_q, &c);
res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc)
- res = nvme_sc;
out_dma:
dma_free_coherent(dev->dev, sizeof(struct nvme_id_ns), mem, dma_addr);
static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr,
struct nvme_trans_io_cdb *cdb_info, u8 is_write)
{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
+ int nvme_sc = NVME_SC_SUCCESS;
struct nvme_dev *dev = ns->dev;
u32 num_cmds;
struct nvme_iod *iod;
iod = nvme_map_user_pages(dev,
(is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
(unsigned long)next_mapping_addr, unit_len);
- if (IS_ERR(iod)) {
- res = PTR_ERR(iod);
- goto out;
- }
+ if (IS_ERR(iod))
+ return PTR_ERR(iod);
+
retcode = nvme_setup_prps(dev, iod, unit_len, GFP_KERNEL);
if (retcode != unit_len) {
nvme_unmap_user_pages(dev,
(is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
iod);
nvme_free_iod(dev, iod);
- res = -ENOMEM;
- goto out;
+ return -ENOMEM;
}
c.rw.prp1 = cpu_to_le64(sg_dma_address(iod->sg));
c.rw.prp2 = cpu_to_le64(iod->first_dma);
nvme_offset += unit_num_blocks;
nvme_sc = nvme_submit_sync_cmd(ns->queue, &c);
- if (nvme_sc != NVME_SC_SUCCESS) {
- nvme_unmap_user_pages(dev,
- (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
- iod);
- nvme_free_iod(dev, iod);
- res = nvme_trans_status_code(hdr, nvme_sc);
- goto out;
- }
+
nvme_unmap_user_pages(dev,
(is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
iod);
nvme_free_iod(dev, iod);
+
+
+ if (nvme_sc != NVME_SC_SUCCESS)
+ break;
}
- res = nvme_trans_status_code(hdr, NVME_SC_SUCCESS);
- out:
- return res;
+ return nvme_trans_status_code(hdr, nvme_sc);
}
static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res = 0;
struct nvme_trans_io_cdb cdb_info;
u8 opcode = cmd[0];
u64 xfer_bytes;
break;
default:
/* Will never really reach here */
- res = SNTI_INTERNAL_ERROR;
+ res = -EIO;
goto out;
}
/* Send NVMe IO Command(s) */
res = nvme_trans_do_nvme_io(ns, hdr, &cdb_info, is_write);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out;
out:
static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res = 0;
u8 evpd;
u8 page_code;
int alloc_len;
static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
u16 alloc_len;
u8 sp;
u8 pc;
static int nvme_trans_mode_select(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
u8 cdb10 = 0;
u16 parm_list_len;
u8 page_format;
* According to SPC-4 r24, a paramter list length field of 0
* shall not be considered an error
*/
- res = nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len,
+ return nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len,
page_format, save_pages, cdb10);
}
- return res;
+ return 0;
}
static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res = 0;
u16 alloc_len;
u8 cdb10 = 0;
u8 page_code;
static int nvme_trans_read_capacity(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
u32 alloc_len = READ_CAP_10_RESP_SIZE;
u32 resp_size = READ_CAP_10_RESP_SIZE;
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
+
id_ns = mem;
response = kzalloc(resp_size, GFP_KERNEL);
static int nvme_trans_report_luns(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
u32 alloc_len, xfer_len, resp_size;
u8 select_report;
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
+
id_ctrl = mem;
ll_length = le32_to_cpu(id_ctrl->nn) * LUN_ENTRY_SIZE;
resp_size = ll_length + LUN_DATA_HEADER_SIZE;
static int nvme_trans_request_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
u8 alloc_len, xfer_len, resp_size;
u8 desc_format;
u8 *response;
static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
int nvme_sc;
struct nvme_command c;
u8 immed, pcmod, pc, no_flush, start;
start &= START_STOP_UNIT_CDB_START_MASK;
if (immed != 0) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
+ return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
} else {
nvme_sc = nvme_submit_sync_cmd(ns->queue, &c);
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
- goto out;
- if (nvme_sc) {
- res = nvme_sc;
- goto out;
- }
+ return res;
}
/* Setup the expected power state transition */
- res = nvme_trans_power_state(ns, hdr, pc, pcmod, start);
+ return nvme_trans_power_state(ns, hdr, pc, pcmod, start);
}
-
- out:
- return res;
}
static int nvme_trans_synchronize_cache(struct nvme_ns *ns,
struct sg_io_hdr *hdr, u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
int nvme_sc;
struct nvme_command c;
c.common.nsid = cpu_to_le32(ns->ns_id);
nvme_sc = nvme_submit_sync_cmd(ns->queue, &c);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out;
- if (nvme_sc)
- res = nvme_sc;
-
- out:
- return res;
+ return nvme_trans_status_code(hdr, nvme_sc);
}
static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res;
u8 parm_hdr_len = 0;
u8 nvme_pf_code = 0;
u8 format_prot_info, long_list, format_data;
if (parm_hdr_len > 0) {
res = nvme_trans_fmt_get_parm_header(hdr, parm_hdr_len,
format_prot_info, &nvme_pf_code);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out;
}
/* Determine Block size and count and send format command */
res = nvme_trans_fmt_set_blk_size_count(ns, hdr);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out;
res = nvme_trans_fmt_send_cmd(ns, hdr, nvme_pf_code);
struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
struct nvme_dev *dev = ns->dev;
if (!(readl(&dev->bar->csts) & NVME_CSTS_RDY))
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
+ return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
NOT_READY, SCSI_ASC_LUN_NOT_READY,
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
else
- res = nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0);
-
- return res;
+ return nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0);
}
static int nvme_trans_write_buffer(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- int res = SNTI_TRANSLATION_SUCCESS;
+ int res = 0;
u32 buffer_offset, parm_list_length;
u8 buffer_id, mode;
res = nvme_trans_send_download_fw_cmd(ns, hdr, nvme_admin_download_fw,
parm_list_length, buffer_offset,
buffer_id);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out;
res = nvme_trans_send_activate_fw_cmd(ns, hdr, buffer_id);
break;
return -ENOMEM;
res = nvme_trans_copy_from_user(hdr, plist, list_len);
- if (res != SNTI_TRANSLATION_SUCCESS)
+ if (res)
goto out;
ndesc = be16_to_cpu(plist->unmap_blk_desc_data_len) >> 4;
if (hdr.cmd_len > BLK_MAX_CDB)
return -EINVAL;
+ /*
+ * A positive return code means a NVMe status, which has been
+ * translated to sense data.
+ */
retcode = nvme_scsi_translate(ns, &hdr);
if (retcode < 0)
return retcode;
- if (retcode > 0)
- retcode = SNTI_TRANSLATION_SUCCESS;
if (copy_to_user(u_hdr, &hdr, sizeof(sg_io_hdr_t)) > 0)
return -EFAULT;
-
- return retcode;
+ return 0;
}
int nvme_sg_get_version_num(int __user *ip)
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff