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csiostor:firmware upgrade fix 

This patch fixes removes older means of upgrading Firmware using MAJOR version
and adds newer interface version checking mechanism.

Please apply this patch on net-next since it depends on previous commits.

Signed-off-by: Praveen Madhavan <praveenm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Praveen Madhavan 2015-01-07 19:16:28 +05:30 committed by David S. Miller
parent 3552c31949
commit f40e74ffa3
3 changed files with 247 additions and 82 deletions
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277
drivers/scsi/csiostor/csio_hw.c
View File

@ -681,43 +681,6 @@ csio_hw_get_tp_version(struct csio_hw *hw, u32 *vers)
vers, 0);
}
/*
* csio_hw_check_fw_version - check if the FW is compatible with
* this driver
* @hw: HW module
*
* Checks if an adapter's FW is compatible with the driver. Returns 0
* if there's exact match, a negative error if the version could not be
* read or there's a major/minor version mismatch/minor.
*/
static int
csio_hw_check_fw_version(struct csio_hw *hw)
{
int ret, major, minor, micro;
ret = csio_hw_get_fw_version(hw, &hw->fwrev);
if (!ret)
ret = csio_hw_get_tp_version(hw, &hw->tp_vers);
if (ret)
return ret;
major = FW_HDR_FW_VER_MAJOR_G(hw->fwrev);
minor = FW_HDR_FW_VER_MINOR_G(hw->fwrev);
micro = FW_HDR_FW_VER_MICRO_G(hw->fwrev);
if (major != FW_VERSION_MAJOR(hw)) { /* major mismatch - fail */
csio_err(hw, "card FW has major version %u, driver wants %u\n",
major, FW_VERSION_MAJOR(hw));
return -EINVAL;
}
if (minor == FW_VERSION_MINOR(hw) && micro == FW_VERSION_MICRO(hw))
return 0; /* perfect match */
/* Minor/micro version mismatch */
return -EINVAL;
}
/*
* csio_hw_fw_dload - download firmware.
* @hw: HW module
@ -1967,6 +1930,170 @@ out:
return rv;
}
/* Is the given firmware API compatible with the one the driver was compiled
* with?
*/
static int fw_compatible(const struct fw_hdr *hdr1, const struct fw_hdr *hdr2)
{
/* short circuit if it's the exact same firmware version */
if (hdr1->chip == hdr2->chip && hdr1->fw_ver == hdr2->fw_ver)
return 1;
#define SAME_INTF(x) (hdr1->intfver_##x == hdr2->intfver_##x)
if (hdr1->chip == hdr2->chip && SAME_INTF(nic) && SAME_INTF(vnic) &&
SAME_INTF(ri) && SAME_INTF(iscsi) && SAME_INTF(fcoe))
return 1;
#undef SAME_INTF
return 0;
}
/* The firmware in the filesystem is usable, but should it be installed?
* This routine explains itself in detail if it indicates the filesystem
* firmware should be installed.
*/
static int csio_should_install_fs_fw(struct csio_hw *hw, int card_fw_usable,
int k, int c)
{
const char *reason;
if (!card_fw_usable) {
reason = "incompatible or unusable";
goto install;
}
if (k > c) {
reason = "older than the version supported with this driver";
goto install;
}
return 0;
install:
csio_err(hw, "firmware on card (%u.%u.%u.%u) is %s, "
"installing firmware %u.%u.%u.%u on card.\n",
FW_HDR_FW_VER_MAJOR_G(c), FW_HDR_FW_VER_MINOR_G(c),
FW_HDR_FW_VER_MICRO_G(c), FW_HDR_FW_VER_BUILD_G(c), reason,
FW_HDR_FW_VER_MAJOR_G(k), FW_HDR_FW_VER_MINOR_G(k),
FW_HDR_FW_VER_MICRO_G(k), FW_HDR_FW_VER_BUILD_G(k));
return 1;
}
static struct fw_info fw_info_array[] = {
{
.chip = CHELSIO_T5,
.fs_name = FW_CFG_NAME_T5,
.fw_mod_name = FW_FNAME_T5,
.fw_hdr = {
.chip = FW_HDR_CHIP_T5,
.fw_ver = __cpu_to_be32(FW_VERSION(T5)),
.intfver_nic = FW_INTFVER(T5, NIC),
.intfver_vnic = FW_INTFVER(T5, VNIC),
.intfver_ri = FW_INTFVER(T5, RI),
.intfver_iscsi = FW_INTFVER(T5, ISCSI),
.intfver_fcoe = FW_INTFVER(T5, FCOE),
},
}
};
static struct fw_info *find_fw_info(int chip)
{
int i;
for (i = 0; i < ARRAY_SIZE(fw_info_array); i++) {
if (fw_info_array[i].chip == chip)
return &fw_info_array[i];
}
return NULL;
}
int csio_hw_prep_fw(struct csio_hw *hw, struct fw_info *fw_info,
const u8 *fw_data, unsigned int fw_size,
struct fw_hdr *card_fw, enum csio_dev_state state,
int *reset)
{
int ret, card_fw_usable, fs_fw_usable;
const struct fw_hdr *fs_fw;
const struct fw_hdr *drv_fw;
drv_fw = &fw_info->fw_hdr;
/* Read the header of the firmware on the card */
ret = csio_hw_read_flash(hw, FLASH_FW_START,
sizeof(*card_fw) / sizeof(uint32_t),
(uint32_t *)card_fw, 1);
if (ret == 0) {
card_fw_usable = fw_compatible(drv_fw, (const void *)card_fw);
} else {
csio_err(hw,
"Unable to read card's firmware header: %d\n", ret);
card_fw_usable = 0;
}
if (fw_data != NULL) {
fs_fw = (const void *)fw_data;
fs_fw_usable = fw_compatible(drv_fw, fs_fw);
} else {
fs_fw = NULL;
fs_fw_usable = 0;
}
if (card_fw_usable && card_fw->fw_ver == drv_fw->fw_ver &&
(!fs_fw_usable || fs_fw->fw_ver == drv_fw->fw_ver)) {
/* Common case: the firmware on the card is an exact match and
* the filesystem one is an exact match too, or the filesystem
* one is absent/incompatible.
*/
} else if (fs_fw_usable && state == CSIO_DEV_STATE_UNINIT &&
csio_should_install_fs_fw(hw, card_fw_usable,
be32_to_cpu(fs_fw->fw_ver),
be32_to_cpu(card_fw->fw_ver))) {
ret = csio_hw_fw_upgrade(hw, hw->pfn, fw_data,
fw_size, 0);
if (ret != 0) {
csio_err(hw,
"failed to install firmware: %d\n", ret);
goto bye;
}
/* Installed successfully, update the cached header too. */
memcpy(card_fw, fs_fw, sizeof(*card_fw));
card_fw_usable = 1;
*reset = 0; /* already reset as part of load_fw */
}
if (!card_fw_usable) {
uint32_t d, c, k;
d = be32_to_cpu(drv_fw->fw_ver);
c = be32_to_cpu(card_fw->fw_ver);
k = fs_fw ? be32_to_cpu(fs_fw->fw_ver) : 0;
csio_err(hw, "Cannot find a usable firmware: "
"chip state %d, "
"driver compiled with %d.%d.%d.%d, "
"card has %d.%d.%d.%d, filesystem has %d.%d.%d.%d\n",
state,
FW_HDR_FW_VER_MAJOR_G(d), FW_HDR_FW_VER_MINOR_G(d),
FW_HDR_FW_VER_MICRO_G(d), FW_HDR_FW_VER_BUILD_G(d),
FW_HDR_FW_VER_MAJOR_G(c), FW_HDR_FW_VER_MINOR_G(c),
FW_HDR_FW_VER_MICRO_G(c), FW_HDR_FW_VER_BUILD_G(c),
FW_HDR_FW_VER_MAJOR_G(k), FW_HDR_FW_VER_MINOR_G(k),
FW_HDR_FW_VER_MICRO_G(k), FW_HDR_FW_VER_BUILD_G(k));
ret = EINVAL;
goto bye;
}
/* We're using whatever's on the card and it's known to be good. */
hw->fwrev = be32_to_cpu(card_fw->fw_ver);
hw->tp_vers = be32_to_cpu(card_fw->tp_microcode_ver);
bye:
return ret;
}
/*
* Returns -EINVAL if attempts to flash the firmware failed
* else returns 0,
@ -1974,14 +2101,27 @@ out:
* latest firmware ECANCELED is returned
*/
static int
csio_hw_flash_fw(struct csio_hw *hw)
csio_hw_flash_fw(struct csio_hw *hw, int *reset)
{
int ret = -ECANCELED;
const struct firmware *fw;
const struct fw_hdr *hdr;
u32 fw_ver;
struct fw_info *fw_info;
struct fw_hdr *card_fw;
struct pci_dev *pci_dev = hw->pdev;
struct device *dev = &pci_dev->dev ;
const u8 *fw_data = NULL;
unsigned int fw_size = 0;
/* This is the firmware whose headers the driver was compiled
* against
*/
fw_info = find_fw_info(CHELSIO_CHIP_VERSION(hw->chip_id));
if (fw_info == NULL) {
csio_err(hw,
"unable to get firmware info for chip %d.\n",
CHELSIO_CHIP_VERSION(hw->chip_id));
return -EINVAL;
}
if (request_firmware(&fw, CSIO_FW_FNAME(hw), dev) < 0) {
csio_err(hw, "could not find firmware image %s, err: %d\n",
@ -1989,33 +2129,25 @@ csio_hw_flash_fw(struct csio_hw *hw)
return -EINVAL;
}
hdr = (const struct fw_hdr *)fw->data;
fw_ver = ntohl(hdr->fw_ver);
if (FW_HDR_FW_VER_MAJOR_G(fw_ver) != FW_VERSION_MAJOR(hw))
return -EINVAL; /* wrong major version, won't do */
/*
* If the flash FW is unusable or we found something newer, load it.
/* allocate memory to read the header of the firmware on the
* card
*/
if (FW_HDR_FW_VER_MAJOR_G(hw->fwrev) != FW_VERSION_MAJOR(hw) ||
fw_ver > hw->fwrev) {
ret = csio_hw_fw_upgrade(hw, hw->pfn, fw->data, fw->size,
/*force=*/false);
if (!ret)
csio_info(hw,
"firmware upgraded to version %pI4 from %s\n",
&hdr->fw_ver, CSIO_FW_FNAME(hw));
else
csio_err(hw, "firmware upgrade failed! err=%d\n", ret);
} else
ret = -EINVAL;
card_fw = kmalloc(sizeof(*card_fw), GFP_KERNEL);
release_firmware(fw);
fw_data = fw->data;
fw_size = fw->size;
/* upgrade FW logic */
ret = csio_hw_prep_fw(hw, fw_info, fw_data, fw_size, card_fw,
hw->fw_state, reset);
/* Cleaning up */
if (fw != NULL)
release_firmware(fw);
kfree(card_fw);
return ret;
}
/*
* csio_hw_configure - Configure HW
* @hw - HW module
@ -2071,25 +2203,18 @@ csio_hw_configure(struct csio_hw *hw)
if (rv != 0)
goto out;
csio_hw_get_fw_version(hw, &hw->fwrev);
csio_hw_get_tp_version(hw, &hw->tp_vers);
if (csio_is_hw_master(hw) && hw->fw_state != CSIO_DEV_STATE_INIT) {
rv = csio_hw_check_fw_version(hw);
if (rv == -EINVAL) {
/* Do firmware update */
spin_unlock_irq(&hw->lock);
rv = csio_hw_flash_fw(hw);
spin_lock_irq(&hw->lock);
spin_unlock_irq(&hw->lock);
rv = csio_hw_flash_fw(hw, &reset);
spin_lock_irq(&hw->lock);
if (rv != 0)
goto out;
if (rv == 0) {
reset = 0;
/*
* Note that the chip was reset as part of the
* firmware upgrade so we don't reset it again
* below and grab the new firmware version.
*/
rv = csio_hw_check_fw_version(hw);
}
}
/*
* If the firmware doesn't support Configuration
* Files, use the old Driver-based, hard-wired

5
drivers/scsi/csiostor/csio_hw.h
View File

@ -201,9 +201,8 @@ enum {
SF_ERASE_SECTOR = 0xd8, /* erase sector */
FW_START_SEC = 8, /* first flash sector for FW */
FW_END_SEC = 15, /* last flash sector for FW */
FW_IMG_START = FW_START_SEC * SF_SEC_SIZE,
FW_MAX_SIZE = (FW_END_SEC - FW_START_SEC + 1) * SF_SEC_SIZE,
FW_MAX_SIZE = 16 * SF_SEC_SIZE,
FLASH_CFG_MAX_SIZE = 0x10000 , /* max size of the flash config file*/
FLASH_CFG_OFFSET = 0x1f0000,
@ -221,7 +220,7 @@ enum {
* Location of firmware image in FLASH.
*/
FLASH_FW_START_SEC = 8,
FLASH_FW_NSECS = 8,
FLASH_FW_NSECS = 16,
FLASH_FW_START = FLASH_START(FLASH_FW_START_SEC),
FLASH_FW_MAX_SIZE = FLASH_MAX_SIZE(FLASH_FW_NSECS),

47
drivers/scsi/csiostor/csio_hw_chip.h
View File

@ -50,6 +50,36 @@
#define FW_CFG_NAME_T4 "cxgb4/t4-config.txt"
#define FW_CFG_NAME_T5 "cxgb4/t5-config.txt"
#define T4FW_VERSION_MAJOR 0x01
#define T4FW_VERSION_MINOR 0x0B
#define T4FW_VERSION_MICRO 0x1B
#define T4FW_VERSION_BUILD 0x00
#define T5FW_VERSION_MAJOR 0x01
#define T5FW_VERSION_MINOR 0x0B
#define T5FW_VERSION_MICRO 0x1B
#define T5FW_VERSION_BUILD 0x00
#define CHELSIO_CHIP_CODE(version, revision) (((version) << 4) | (revision))
#define CHELSIO_CHIP_FPGA 0x100
#define CHELSIO_CHIP_VERSION(code) (((code) >> 12) & 0xf)
#define CHELSIO_CHIP_RELEASE(code) ((code) & 0xf)
#define CHELSIO_T4 0x4
#define CHELSIO_T5 0x5
enum chip_type {
T4_A1 = CHELSIO_CHIP_CODE(CHELSIO_T4, 1),
T4_A2 = CHELSIO_CHIP_CODE(CHELSIO_T4, 2),
T4_FIRST_REV = T4_A1,
T4_LAST_REV = T4_A2,
T5_A0 = CHELSIO_CHIP_CODE(CHELSIO_T5, 0),
T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
T5_FIRST_REV = T5_A0,
T5_LAST_REV = T5_A1,
};
/* Define static functions */
static inline int csio_is_t4(uint16_t chip)
{
@ -80,10 +110,21 @@ static inline int csio_is_t5(uint16_t chip)
(csio_is_t4(hw->chip_id) ? (PORT_REG(port, XGMAC_PORT_INT_CAUSE_A)) : \
(T5_PORT_REG(port, MAC_PORT_INT_CAUSE_A)))
#define FW_VERSION_MAJOR(hw) (csio_is_t4(hw->chip_id) ? 1 : 0)
#define FW_VERSION_MINOR(hw) (csio_is_t4(hw->chip_id) ? 2 : 0)
#define FW_VERSION_MICRO(hw) (csio_is_t4(hw->chip_id) ? 8 : 0)
#include "t4fw_api.h"
#define FW_VERSION(chip) ( \
FW_HDR_FW_VER_MAJOR_G(chip##FW_VERSION_MAJOR) | \
FW_HDR_FW_VER_MINOR_G(chip##FW_VERSION_MINOR) | \
FW_HDR_FW_VER_MICRO_G(chip##FW_VERSION_MICRO) | \
FW_HDR_FW_VER_BUILD_G(chip##FW_VERSION_BUILD))
#define FW_INTFVER(chip, intf) (FW_HDR_INTFVER_##intf)
struct fw_info {
u8 chip;
char *fs_name;
char *fw_mod_name;
struct fw_hdr fw_hdr;
};
#define CSIO_FW_FNAME(hw) \
(csio_is_t4(hw->chip_id) ? FW_FNAME_T4 : FW_FNAME_T5)