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-rw-r--r--drivers/net/ethernet/sfc/mtd.c197
1 files changed, 112 insertions, 85 deletions
diff --git a/drivers/net/ethernet/sfc/mtd.c b/drivers/net/ethernet/sfc/mtd.c
index ba6c87a73d86..f5819c746e7a 100644
--- a/drivers/net/ethernet/sfc/mtd.c
+++ b/drivers/net/ethernet/sfc/mtd.c
@@ -27,23 +27,19 @@
struct efx_mtd_partition {
struct list_head node;
struct mtd_info mtd;
- union {
- struct {
- bool updating;
- u8 nvram_type;
- u16 fw_subtype;
- } mcdi;
- struct {
- const struct falcon_spi_device *spi;
- size_t offset;
- } falcon;
- };
const char *dev_type_name;
const char *type_name;
char name[IFNAMSIZ + 20];
};
+struct falcon_mtd_partition {
+ struct efx_mtd_partition common;
+ const struct falcon_spi_device *spi;
+ size_t offset;
+};
+
struct efx_mtd_ops {
+ void (*rename)(struct efx_mtd_partition *part);
int (*read)(struct mtd_info *mtd, loff_t start, size_t len,
size_t *retlen, u8 *buffer);
int (*erase)(struct mtd_info *mtd, loff_t start, size_t len);
@@ -55,16 +51,19 @@ struct efx_mtd_ops {
#define to_efx_mtd_partition(mtd) \
container_of(mtd, struct efx_mtd_partition, mtd)
+#define to_falcon_mtd_partition(mtd) \
+ container_of(mtd, struct falcon_mtd_partition, common.mtd)
+
static int falcon_mtd_probe(struct efx_nic *efx);
static int siena_mtd_probe(struct efx_nic *efx);
/* SPI utilities */
static int
-falcon_spi_slow_wait(struct efx_mtd_partition *part, bool uninterruptible)
+falcon_spi_slow_wait(struct falcon_mtd_partition *part, bool uninterruptible)
{
- const struct falcon_spi_device *spi = part->falcon.spi;
- struct efx_nic *efx = part->mtd.priv;
+ const struct falcon_spi_device *spi = part->spi;
+ struct efx_nic *efx = part->common.mtd.priv;
u8 status;
int rc, i;
@@ -83,7 +82,7 @@ falcon_spi_slow_wait(struct efx_mtd_partition *part, bool uninterruptible)
return -EINTR;
}
pr_err("%s: timed out waiting for %s\n",
- part->name, part->dev_type_name);
+ part->common.name, part->common.dev_type_name);
return -ETIMEDOUT;
}
@@ -123,10 +122,10 @@ falcon_spi_unlock(struct efx_nic *efx, const struct falcon_spi_device *spi)
}
static int
-falcon_spi_erase(struct efx_mtd_partition *part, loff_t start, size_t len)
+falcon_spi_erase(struct falcon_mtd_partition *part, loff_t start, size_t len)
{
- const struct falcon_spi_device *spi = part->falcon.spi;
- struct efx_nic *efx = part->mtd.priv;
+ const struct falcon_spi_device *spi = part->spi;
+ struct efx_nic *efx = part->common.mtd.priv;
unsigned pos, block_len;
u8 empty[FALCON_SPI_VERIFY_BUF_LEN];
u8 buffer[FALCON_SPI_VERIFY_BUF_LEN];
@@ -218,22 +217,18 @@ static void efx_mtd_rename_partition(struct efx_mtd_partition *part)
{
struct efx_nic *efx = part->mtd.priv;
- if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
- snprintf(part->name, sizeof(part->name), "%s %s:%02x",
- efx->name, part->type_name, part->mcdi.fw_subtype);
- else
- snprintf(part->name, sizeof(part->name), "%s %s",
- efx->name, part->type_name);
+ efx->mtd_ops->rename(part);
}
-static int efx_mtd_add(struct efx_nic *efx,
- struct efx_mtd_partition *parts, size_t n_parts)
+static int efx_mtd_add(struct efx_nic *efx, struct efx_mtd_partition *parts,
+ size_t n_parts, size_t sizeof_part)
{
struct efx_mtd_partition *part;
size_t i;
for (i = 0; i < n_parts; i++) {
- part = &parts[i];
+ part = (struct efx_mtd_partition *)((char *)parts +
+ i * sizeof_part);
part->mtd.writesize = 1;
@@ -257,8 +252,11 @@ static int efx_mtd_add(struct efx_nic *efx,
return 0;
fail:
- while (i--)
- efx_mtd_remove_partition(&parts[i]);
+ while (i--) {
+ part = (struct efx_mtd_partition *)((char *)parts +
+ i * sizeof_part);
+ efx_mtd_remove_partition(part);
+ }
/* Failure is unlikely here, but probably means we're out of memory */
return -ENOMEM;
}
@@ -301,10 +299,18 @@ int efx_mtd_probe(struct efx_nic *efx)
/* Implementation of MTD operations for Falcon */
+static void falcon_mtd_rename(struct efx_mtd_partition *part)
+{
+ struct efx_nic *efx = part->mtd.priv;
+
+ snprintf(part->name, sizeof(part->name), "%s %s",
+ efx->name, part->type_name);
+}
+
static int falcon_mtd_read(struct mtd_info *mtd, loff_t start,
size_t len, size_t *retlen, u8 *buffer)
{
- struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
+ struct falcon_mtd_partition *part = to_falcon_mtd_partition(mtd);
struct efx_nic *efx = mtd->priv;
struct falcon_nic_data *nic_data = efx->nic_data;
int rc;
@@ -312,7 +318,7 @@ static int falcon_mtd_read(struct mtd_info *mtd, loff_t start,
rc = mutex_lock_interruptible(&nic_data->spi_lock);
if (rc)
return rc;
- rc = falcon_spi_read(efx, part->falcon.spi, part->falcon.offset + start,
+ rc = falcon_spi_read(efx, part->spi, part->offset + start,
len, retlen, buffer);
mutex_unlock(&nic_data->spi_lock);
return rc;
@@ -320,7 +326,7 @@ static int falcon_mtd_read(struct mtd_info *mtd, loff_t start,
static int falcon_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len)
{
- struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
+ struct falcon_mtd_partition *part = to_falcon_mtd_partition(mtd);
struct efx_nic *efx = mtd->priv;
struct falcon_nic_data *nic_data = efx->nic_data;
int rc;
@@ -328,7 +334,7 @@ static int falcon_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len)
rc = mutex_lock_interruptible(&nic_data->spi_lock);
if (rc)
return rc;
- rc = falcon_spi_erase(part, part->falcon.offset + start, len);
+ rc = falcon_spi_erase(part, part->offset + start, len);
mutex_unlock(&nic_data->spi_lock);
return rc;
}
@@ -336,7 +342,7 @@ static int falcon_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len)
static int falcon_mtd_write(struct mtd_info *mtd, loff_t start,
size_t len, size_t *retlen, const u8 *buffer)
{
- struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
+ struct falcon_mtd_partition *part = to_falcon_mtd_partition(mtd);
struct efx_nic *efx = mtd->priv;
struct falcon_nic_data *nic_data = efx->nic_data;
int rc;
@@ -344,15 +350,15 @@ static int falcon_mtd_write(struct mtd_info *mtd, loff_t start,
rc = mutex_lock_interruptible(&nic_data->spi_lock);
if (rc)
return rc;
- rc = falcon_spi_write(efx, part->falcon.spi,
- part->falcon.offset + start, len, retlen, buffer);
+ rc = falcon_spi_write(efx, part->spi, part->offset + start,
+ len, retlen, buffer);
mutex_unlock(&nic_data->spi_lock);
return rc;
}
static int falcon_mtd_sync(struct mtd_info *mtd)
{
- struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
+ struct falcon_mtd_partition *part = to_falcon_mtd_partition(mtd);
struct efx_nic *efx = mtd->priv;
struct falcon_nic_data *nic_data = efx->nic_data;
int rc;
@@ -364,6 +370,7 @@ static int falcon_mtd_sync(struct mtd_info *mtd)
}
static const struct efx_mtd_ops falcon_mtd_ops = {
+ .rename = falcon_mtd_rename,
.read = falcon_mtd_read,
.erase = falcon_mtd_erase,
.write = falcon_mtd_write,
@@ -373,7 +380,7 @@ static const struct efx_mtd_ops falcon_mtd_ops = {
static int falcon_mtd_probe(struct efx_nic *efx)
{
struct falcon_nic_data *nic_data = efx->nic_data;
- struct efx_mtd_partition *parts;
+ struct falcon_mtd_partition *parts;
struct falcon_spi_device *spi;
size_t n_parts;
int rc = -ENODEV;
@@ -388,33 +395,33 @@ static int falcon_mtd_probe(struct efx_nic *efx)
spi = &nic_data->spi_flash;
if (falcon_spi_present(spi) && spi->size > FALCON_FLASH_BOOTCODE_START) {
- parts[n_parts].falcon.spi = spi;
- parts[n_parts].falcon.offset = FALCON_FLASH_BOOTCODE_START;
- parts[n_parts].dev_type_name = "flash";
- parts[n_parts].type_name = "sfc_flash_bootrom";
- parts[n_parts].mtd.type = MTD_NORFLASH;
- parts[n_parts].mtd.flags = MTD_CAP_NORFLASH;
- parts[n_parts].mtd.size = spi->size - FALCON_FLASH_BOOTCODE_START;
- parts[n_parts].mtd.erasesize = spi->erase_size;
+ parts[n_parts].spi = spi;
+ parts[n_parts].offset = FALCON_FLASH_BOOTCODE_START;
+ parts[n_parts].common.dev_type_name = "flash";
+ parts[n_parts].common.type_name = "sfc_flash_bootrom";
+ parts[n_parts].common.mtd.type = MTD_NORFLASH;
+ parts[n_parts].common.mtd.flags = MTD_CAP_NORFLASH;
+ parts[n_parts].common.mtd.size = spi->size - FALCON_FLASH_BOOTCODE_START;
+ parts[n_parts].common.mtd.erasesize = spi->erase_size;
n_parts++;
}
spi = &nic_data->spi_eeprom;
if (falcon_spi_present(spi) && spi->size > FALCON_EEPROM_BOOTCONFIG_START) {
- parts[n_parts].falcon.spi = spi;
- parts[n_parts].falcon.offset = FALCON_EEPROM_BOOTCONFIG_START;
- parts[n_parts].dev_type_name = "EEPROM";
- parts[n_parts].type_name = "sfc_bootconfig";
- parts[n_parts].mtd.type = MTD_RAM;
- parts[n_parts].mtd.flags = MTD_CAP_RAM;
- parts[n_parts].mtd.size =
+ parts[n_parts].spi = spi;
+ parts[n_parts].offset = FALCON_EEPROM_BOOTCONFIG_START;
+ parts[n_parts].common.dev_type_name = "EEPROM";
+ parts[n_parts].common.type_name = "sfc_bootconfig";
+ parts[n_parts].common.mtd.type = MTD_RAM;
+ parts[n_parts].common.mtd.flags = MTD_CAP_RAM;
+ parts[n_parts].common.mtd.size =
min(spi->size, FALCON_EEPROM_BOOTCONFIG_END) -
FALCON_EEPROM_BOOTCONFIG_START;
- parts[n_parts].mtd.erasesize = spi->erase_size;
+ parts[n_parts].common.mtd.erasesize = spi->erase_size;
n_parts++;
}
- rc = efx_mtd_add(efx, parts, n_parts);
+ rc = efx_mtd_add(efx, &parts[0].common, n_parts, sizeof(*parts));
if (rc)
kfree(parts);
return rc;
@@ -422,10 +429,30 @@ static int falcon_mtd_probe(struct efx_nic *efx)
/* Implementation of MTD operations for Siena */
+struct efx_mcdi_mtd_partition {
+ struct efx_mtd_partition common;
+ bool updating;
+ u8 nvram_type;
+ u16 fw_subtype;
+};
+
+#define to_efx_mcdi_mtd_partition(mtd) \
+ container_of(mtd, struct efx_mcdi_mtd_partition, common.mtd)
+
+static void siena_mtd_rename(struct efx_mtd_partition *part)
+{
+ struct efx_mcdi_mtd_partition *mcdi_part =
+ container_of(part, struct efx_mcdi_mtd_partition, common);
+ struct efx_nic *efx = part->mtd.priv;
+
+ snprintf(part->name, sizeof(part->name), "%s %s:%02x",
+ efx->name, part->type_name, mcdi_part->fw_subtype);
+}
+
static int siena_mtd_read(struct mtd_info *mtd, loff_t start,
size_t len, size_t *retlen, u8 *buffer)
{
- struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
+ struct efx_mcdi_mtd_partition *part = to_efx_mcdi_mtd_partition(mtd);
struct efx_nic *efx = mtd->priv;
loff_t offset = start;
loff_t end = min_t(loff_t, start + len, mtd->size);
@@ -434,7 +461,7 @@ static int siena_mtd_read(struct mtd_info *mtd, loff_t start,
while (offset < end) {
chunk = min_t(size_t, end - offset, EFX_MCDI_NVRAM_LEN_MAX);
- rc = efx_mcdi_nvram_read(efx, part->mcdi.nvram_type, offset,
+ rc = efx_mcdi_nvram_read(efx, part->nvram_type, offset,
buffer, chunk);
if (rc)
goto out;
@@ -448,25 +475,25 @@ out:
static int siena_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len)
{
- struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
+ struct efx_mcdi_mtd_partition *part = to_efx_mcdi_mtd_partition(mtd);
struct efx_nic *efx = mtd->priv;
loff_t offset = start & ~((loff_t)(mtd->erasesize - 1));
loff_t end = min_t(loff_t, start + len, mtd->size);
- size_t chunk = part->mtd.erasesize;
+ size_t chunk = part->common.mtd.erasesize;
int rc = 0;
- if (!part->mcdi.updating) {
- rc = efx_mcdi_nvram_update_start(efx, part->mcdi.nvram_type);
+ if (!part->updating) {
+ rc = efx_mcdi_nvram_update_start(efx, part->nvram_type);
if (rc)
goto out;
- part->mcdi.updating = true;
+ part->updating = true;
}
/* The MCDI interface can in fact do multiple erase blocks at once;
* but erasing may be slow, so we make multiple calls here to avoid
* tripping the MCDI RPC timeout. */
while (offset < end) {
- rc = efx_mcdi_nvram_erase(efx, part->mcdi.nvram_type, offset,
+ rc = efx_mcdi_nvram_erase(efx, part->nvram_type, offset,
chunk);
if (rc)
goto out;
@@ -479,23 +506,23 @@ out:
static int siena_mtd_write(struct mtd_info *mtd, loff_t start,
size_t len, size_t *retlen, const u8 *buffer)
{
- struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
+ struct efx_mcdi_mtd_partition *part = to_efx_mcdi_mtd_partition(mtd);
struct efx_nic *efx = mtd->priv;
loff_t offset = start;
loff_t end = min_t(loff_t, start + len, mtd->size);
size_t chunk;
int rc = 0;
- if (!part->mcdi.updating) {
- rc = efx_mcdi_nvram_update_start(efx, part->mcdi.nvram_type);
+ if (!part->updating) {
+ rc = efx_mcdi_nvram_update_start(efx, part->nvram_type);
if (rc)
goto out;
- part->mcdi.updating = true;
+ part->updating = true;
}
while (offset < end) {
chunk = min_t(size_t, end - offset, EFX_MCDI_NVRAM_LEN_MAX);
- rc = efx_mcdi_nvram_write(efx, part->mcdi.nvram_type, offset,
+ rc = efx_mcdi_nvram_write(efx, part->nvram_type, offset,
buffer, chunk);
if (rc)
goto out;
@@ -509,19 +536,20 @@ out:
static int siena_mtd_sync(struct mtd_info *mtd)
{
- struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
+ struct efx_mcdi_mtd_partition *part = to_efx_mcdi_mtd_partition(mtd);
struct efx_nic *efx = mtd->priv;
int rc = 0;
- if (part->mcdi.updating) {
- part->mcdi.updating = false;
- rc = efx_mcdi_nvram_update_finish(efx, part->mcdi.nvram_type);
+ if (part->updating) {
+ part->updating = false;
+ rc = efx_mcdi_nvram_update_finish(efx, part->nvram_type);
}
return rc;
}
static const struct efx_mtd_ops siena_mtd_ops = {
+ .rename = siena_mtd_rename,
.read = siena_mtd_read,
.erase = siena_mtd_erase,
.write = siena_mtd_write,
@@ -550,7 +578,7 @@ static const struct siena_nvram_type_info siena_nvram_types[] = {
};
static int siena_mtd_probe_partition(struct efx_nic *efx,
- struct efx_mtd_partition *part,
+ struct efx_mcdi_mtd_partition *part,
unsigned int type)
{
const struct siena_nvram_type_info *info;
@@ -573,20 +601,20 @@ static int siena_mtd_probe_partition(struct efx_nic *efx,
if (protected)
return -ENODEV; /* hide it */
- part->mcdi.nvram_type = type;
- part->dev_type_name = "Siena NVRAM manager";
- part->type_name = info->name;
+ part->nvram_type = type;
+ part->common.dev_type_name = "Siena NVRAM manager";
+ part->common.type_name = info->name;
- part->mtd.type = MTD_NORFLASH;
- part->mtd.flags = MTD_CAP_NORFLASH;
- part->mtd.size = size;
- part->mtd.erasesize = erase_size;
+ part->common.mtd.type = MTD_NORFLASH;
+ part->common.mtd.flags = MTD_CAP_NORFLASH;
+ part->common.mtd.size = size;
+ part->common.mtd.erasesize = erase_size;
return 0;
}
static int siena_mtd_get_fw_subtypes(struct efx_nic *efx,
- struct efx_mtd_partition *parts,
+ struct efx_mcdi_mtd_partition *parts,
size_t n_parts)
{
uint16_t fw_subtype_list[
@@ -599,15 +627,14 @@ static int siena_mtd_get_fw_subtypes(struct efx_nic *efx,
return rc;
for (i = 0; i < n_parts; i++)
- parts[i].mcdi.fw_subtype =
- fw_subtype_list[parts[i].mcdi.nvram_type];
+ parts[i].fw_subtype = fw_subtype_list[parts[i].nvram_type];
return 0;
}
static int siena_mtd_probe(struct efx_nic *efx)
{
- struct efx_mtd_partition *parts;
+ struct efx_mcdi_mtd_partition *parts;
u32 nvram_types;
unsigned int type;
size_t n_parts;
@@ -645,7 +672,7 @@ static int siena_mtd_probe(struct efx_nic *efx)
if (rc)
goto fail;
- rc = efx_mtd_add(efx, parts, n_parts);
+ rc = efx_mtd_add(efx, &parts[0].common, n_parts, sizeof(*parts));
fail:
if (rc)
kfree(parts);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-02 14:59:38 +0300