#include "bfi_reg.h"
#include "bfa_defs.h"
#include "bfa_defs_svc.h"
+#include "bfi.h"
BFA_TRC_FILE(CNA, IOC);
#define BFA_DBG_FWTRC_OFF(_fn) (BFI_IOC_TRC_OFF + BFA_DBG_FWTRC_LEN * (_fn))
+#define bfa_ioc_state_disabled(__sm) \
+ (((__sm) == BFI_IOC_UNINIT) || \
+ ((__sm) == BFI_IOC_INITING) || \
+ ((__sm) == BFI_IOC_HWINIT) || \
+ ((__sm) == BFI_IOC_DISABLED) || \
+ ((__sm) == BFI_IOC_FAIL) || \
+ ((__sm) == BFI_IOC_CFG_DISABLED))
+
/*
* Asic specific macros : see bfa_hw_cb.c and bfa_hw_ct.c for details.
*/
static void bfa_ioc_lpu_stop(struct bfa_ioc_s *ioc);
static void bfa_ioc_fail_notify(struct bfa_ioc_s *ioc);
static void bfa_ioc_pf_fwmismatch(struct bfa_ioc_s *ioc);
+static enum bfi_ioc_img_ver_cmp_e bfa_ioc_fw_ver_patch_cmp(
+ struct bfi_ioc_image_hdr_s *base_fwhdr,
+ struct bfi_ioc_image_hdr_s *fwhdr_to_cmp);
+static enum bfi_ioc_img_ver_cmp_e bfa_ioc_flash_fwver_cmp(
+ struct bfa_ioc_s *ioc,
+ struct bfi_ioc_image_hdr_s *base_fwhdr);
/*
* IOC state machine definitions/declarations
}
/*
- * Returns TRUE if same.
+ * Returns TRUE if driver is willing to work with current smem f/w version.
*/
bfa_boolean_t
-bfa_ioc_fwver_cmp(struct bfa_ioc_s *ioc, struct bfi_ioc_image_hdr_s *fwhdr)
+bfa_ioc_fwver_cmp(struct bfa_ioc_s *ioc,
+ struct bfi_ioc_image_hdr_s *smem_fwhdr)
{
struct bfi_ioc_image_hdr_s *drv_fwhdr;
- int i;
+ enum bfi_ioc_img_ver_cmp_e smem_flash_cmp, drv_smem_cmp;
drv_fwhdr = (struct bfi_ioc_image_hdr_s *)
bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), 0);
- for (i = 0; i < BFI_IOC_MD5SUM_SZ; i++) {
- if (fwhdr->md5sum[i] != cpu_to_le32(drv_fwhdr->md5sum[i])) {
- bfa_trc(ioc, i);
- bfa_trc(ioc, fwhdr->md5sum[i]);
- bfa_trc(ioc, drv_fwhdr->md5sum[i]);
- return BFA_FALSE;
- }
+ /*
+ * If smem is incompatible or old, driver should not work with it.
+ */
+ drv_smem_cmp = bfa_ioc_fw_ver_patch_cmp(drv_fwhdr, smem_fwhdr);
+ if (drv_smem_cmp == BFI_IOC_IMG_VER_INCOMP ||
+ drv_smem_cmp == BFI_IOC_IMG_VER_OLD) {
+ return BFA_FALSE;
}
- bfa_trc(ioc, fwhdr->md5sum[0]);
- return BFA_TRUE;
+ /*
+ * IF Flash has a better F/W than smem do not work with smem.
+ * If smem f/w == flash f/w, as smem f/w not old | incmp, work with it.
+ * If Flash is old or incomp work with smem iff smem f/w == drv f/w.
+ */
+ smem_flash_cmp = bfa_ioc_flash_fwver_cmp(ioc, smem_fwhdr);
+
+ if (smem_flash_cmp == BFI_IOC_IMG_VER_BETTER) {
+ return BFA_FALSE;
+ } else if (smem_flash_cmp == BFI_IOC_IMG_VER_SAME) {
+ return BFA_TRUE;
+ } else {
+ return (drv_smem_cmp == BFI_IOC_IMG_VER_SAME) ?
+ BFA_TRUE : BFA_FALSE;
+ }
}
/*
static bfa_boolean_t
bfa_ioc_fwver_valid(struct bfa_ioc_s *ioc, u32 boot_env)
{
- struct bfi_ioc_image_hdr_s fwhdr, *drv_fwhdr;
+ struct bfi_ioc_image_hdr_s fwhdr;
bfa_ioc_fwver_get(ioc, &fwhdr);
- drv_fwhdr = (struct bfi_ioc_image_hdr_s *)
- bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), 0);
-
- if (fwhdr.signature != cpu_to_le32(drv_fwhdr->signature)) {
- bfa_trc(ioc, fwhdr.signature);
- bfa_trc(ioc, drv_fwhdr->signature);
- return BFA_FALSE;
- }
if (swab32(fwhdr.bootenv) != boot_env) {
bfa_trc(ioc, fwhdr.bootenv);
return bfa_ioc_fwver_cmp(ioc, &fwhdr);
}
+static bfa_boolean_t
+bfa_ioc_fwver_md5_check(struct bfi_ioc_image_hdr_s *fwhdr_1,
+ struct bfi_ioc_image_hdr_s *fwhdr_2)
+{
+ int i;
+
+ for (i = 0; i < BFI_IOC_MD5SUM_SZ; i++)
+ if (fwhdr_1->md5sum[i] != fwhdr_2->md5sum[i])
+ return BFA_FALSE;
+
+ return BFA_TRUE;
+}
+
+/*
+ * Returns TRUE if major minor and maintainence are same.
+ * If patch versions are same, check for MD5 Checksum to be same.
+ */
+static bfa_boolean_t
+bfa_ioc_fw_ver_compatible(struct bfi_ioc_image_hdr_s *drv_fwhdr,
+ struct bfi_ioc_image_hdr_s *fwhdr_to_cmp)
+{
+ if (drv_fwhdr->signature != fwhdr_to_cmp->signature)
+ return BFA_FALSE;
+
+ if (drv_fwhdr->fwver.major != fwhdr_to_cmp->fwver.major)
+ return BFA_FALSE;
+
+ if (drv_fwhdr->fwver.minor != fwhdr_to_cmp->fwver.minor)
+ return BFA_FALSE;
+
+ if (drv_fwhdr->fwver.maint != fwhdr_to_cmp->fwver.maint)
+ return BFA_FALSE;
+
+ if (drv_fwhdr->fwver.patch == fwhdr_to_cmp->fwver.patch &&
+ drv_fwhdr->fwver.phase == fwhdr_to_cmp->fwver.phase &&
+ drv_fwhdr->fwver.build == fwhdr_to_cmp->fwver.build) {
+ return bfa_ioc_fwver_md5_check(drv_fwhdr, fwhdr_to_cmp);
+ }
+
+ return BFA_TRUE;
+}
+
+static bfa_boolean_t
+bfa_ioc_flash_fwver_valid(struct bfi_ioc_image_hdr_s *flash_fwhdr)
+{
+ if (flash_fwhdr->fwver.major == 0 || flash_fwhdr->fwver.major == 0xFF)
+ return BFA_FALSE;
+
+ return BFA_TRUE;
+}
+
+static bfa_boolean_t fwhdr_is_ga(struct bfi_ioc_image_hdr_s *fwhdr)
+{
+ if (fwhdr->fwver.phase == 0 &&
+ fwhdr->fwver.build == 0)
+ return BFA_TRUE;
+
+ return BFA_FALSE;
+}
+
+/*
+ * Returns TRUE if both are compatible and patch of fwhdr_to_cmp is better.
+ */
+static enum bfi_ioc_img_ver_cmp_e
+bfa_ioc_fw_ver_patch_cmp(struct bfi_ioc_image_hdr_s *base_fwhdr,
+ struct bfi_ioc_image_hdr_s *fwhdr_to_cmp)
+{
+ if (bfa_ioc_fw_ver_compatible(base_fwhdr, fwhdr_to_cmp) == BFA_FALSE)
+ return BFI_IOC_IMG_VER_INCOMP;
+
+ if (fwhdr_to_cmp->fwver.patch > base_fwhdr->fwver.patch)
+ return BFI_IOC_IMG_VER_BETTER;
+
+ else if (fwhdr_to_cmp->fwver.patch < base_fwhdr->fwver.patch)
+ return BFI_IOC_IMG_VER_OLD;
+
+ /*
+ * GA takes priority over internal builds of the same patch stream.
+ * At this point major minor maint and patch numbers are same.
+ */
+
+ if (fwhdr_is_ga(base_fwhdr) == BFA_TRUE) {
+ if (fwhdr_is_ga(fwhdr_to_cmp))
+ return BFI_IOC_IMG_VER_SAME;
+ else
+ return BFI_IOC_IMG_VER_OLD;
+ } else {
+ if (fwhdr_is_ga(fwhdr_to_cmp))
+ return BFI_IOC_IMG_VER_BETTER;
+ }
+
+ if (fwhdr_to_cmp->fwver.phase > base_fwhdr->fwver.phase)
+ return BFI_IOC_IMG_VER_BETTER;
+ else if (fwhdr_to_cmp->fwver.phase < base_fwhdr->fwver.phase)
+ return BFI_IOC_IMG_VER_OLD;
+
+ if (fwhdr_to_cmp->fwver.build > base_fwhdr->fwver.build)
+ return BFI_IOC_IMG_VER_BETTER;
+ else if (fwhdr_to_cmp->fwver.build < base_fwhdr->fwver.build)
+ return BFI_IOC_IMG_VER_OLD;
+
+ /*
+ * All Version Numbers are equal.
+ * Md5 check to be done as a part of compatibility check.
+ */
+ return BFI_IOC_IMG_VER_SAME;
+}
+
+#define BFA_FLASH_PART_FWIMG_ADDR 0x100000 /* fw image address */
+
+bfa_status_t
+bfa_ioc_flash_img_get_chnk(struct bfa_ioc_s *ioc, u32 off,
+ u32 *fwimg)
+{
+ return bfa_flash_raw_read(ioc->pcidev.pci_bar_kva,
+ BFA_FLASH_PART_FWIMG_ADDR + (off * sizeof(u32)),
+ (char *)fwimg, BFI_FLASH_CHUNK_SZ);
+}
+
+static enum bfi_ioc_img_ver_cmp_e
+bfa_ioc_flash_fwver_cmp(struct bfa_ioc_s *ioc,
+ struct bfi_ioc_image_hdr_s *base_fwhdr)
+{
+ struct bfi_ioc_image_hdr_s *flash_fwhdr;
+ bfa_status_t status;
+ u32 fwimg[BFI_FLASH_CHUNK_SZ_WORDS];
+
+ status = bfa_ioc_flash_img_get_chnk(ioc, 0, fwimg);
+ if (status != BFA_STATUS_OK)
+ return BFI_IOC_IMG_VER_INCOMP;
+
+ flash_fwhdr = (struct bfi_ioc_image_hdr_s *) fwimg;
+ if (bfa_ioc_flash_fwver_valid(flash_fwhdr) == BFA_TRUE)
+ return bfa_ioc_fw_ver_patch_cmp(base_fwhdr, flash_fwhdr);
+ else
+ return BFI_IOC_IMG_VER_INCOMP;
+}
+
+
+/*
+ * Invalidate fwver signature
+ */
+bfa_status_t
+bfa_ioc_fwsig_invalidate(struct bfa_ioc_s *ioc)
+{
+
+ u32 pgnum, pgoff;
+ u32 loff = 0;
+ enum bfi_ioc_state ioc_fwstate;
+
+ ioc_fwstate = bfa_ioc_get_cur_ioc_fwstate(ioc);
+ if (!bfa_ioc_state_disabled(ioc_fwstate))
+ return BFA_STATUS_ADAPTER_ENABLED;
+
+ pgnum = PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, loff);
+ pgoff = PSS_SMEM_PGOFF(loff);
+ writel(pgnum, ioc->ioc_regs.host_page_num_fn);
+ bfa_mem_write(ioc->ioc_regs.smem_page_start, loff, BFA_IOC_FW_INV_SIGN);
+
+ return BFA_STATUS_OK;
+}
+
/*
* Conditionally flush any pending message from firmware at start.
*/
BFA_FALSE : bfa_ioc_fwver_valid(ioc, boot_env);
if (!fwvalid) {
- bfa_ioc_boot(ioc, boot_type, boot_env);
- bfa_ioc_poll_fwinit(ioc);
+ if (bfa_ioc_boot(ioc, boot_type, boot_env) == BFA_STATUS_OK)
+ bfa_ioc_poll_fwinit(ioc);
return;
}
/*
* Initialize the h/w for any other states.
*/
- bfa_ioc_boot(ioc, boot_type, boot_env);
- bfa_ioc_poll_fwinit(ioc);
+ if (bfa_ioc_boot(ioc, boot_type, boot_env) == BFA_STATUS_OK)
+ bfa_ioc_poll_fwinit(ioc);
}
static void
/*
* Initiate a full firmware download.
*/
-static void
+static bfa_status_t
bfa_ioc_download_fw(struct bfa_ioc_s *ioc, u32 boot_type,
u32 boot_env)
{
u32 chunkno = 0;
u32 i;
u32 asicmode;
+ u32 fwimg_size;
+ u32 fwimg_buf[BFI_FLASH_CHUNK_SZ_WORDS];
+ bfa_status_t status;
+
+ if (boot_env == BFI_FWBOOT_ENV_OS &&
+ boot_type == BFI_FWBOOT_TYPE_FLASH) {
+ fwimg_size = BFI_FLASH_IMAGE_SZ/sizeof(u32);
+
+ status = bfa_ioc_flash_img_get_chnk(ioc,
+ BFA_IOC_FLASH_CHUNK_ADDR(chunkno), fwimg_buf);
+ if (status != BFA_STATUS_OK)
+ return status;
+
+ fwimg = fwimg_buf;
+ } else {
+ fwimg_size = bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc));
+ fwimg = bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc),
+ BFA_IOC_FLASH_CHUNK_ADDR(chunkno));
+ }
+
+ bfa_trc(ioc, fwimg_size);
- bfa_trc(ioc, bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)));
- fwimg = bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), chunkno);
pgnum = PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, loff);
pgoff = PSS_SMEM_PGOFF(loff);
writel(pgnum, ioc->ioc_regs.host_page_num_fn);
- for (i = 0; i < bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)); i++) {
+ for (i = 0; i < fwimg_size; i++) {
if (BFA_IOC_FLASH_CHUNK_NO(i) != chunkno) {
chunkno = BFA_IOC_FLASH_CHUNK_NO(i);
- fwimg = bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc),
+
+ if (boot_env == BFI_FWBOOT_ENV_OS &&
+ boot_type == BFI_FWBOOT_TYPE_FLASH) {
+ status = bfa_ioc_flash_img_get_chnk(ioc,
+ BFA_IOC_FLASH_CHUNK_ADDR(chunkno),
+ fwimg_buf);
+ if (status != BFA_STATUS_OK)
+ return status;
+
+ fwimg = fwimg_buf;
+ } else {
+ fwimg = bfa_cb_image_get_chunk(
+ bfa_ioc_asic_gen(ioc),
BFA_IOC_FLASH_CHUNK_ADDR(chunkno));
+ }
}
/*
* write smem
*/
bfa_mem_write(ioc->ioc_regs.smem_page_start, loff,
- cpu_to_le32(fwimg[BFA_IOC_FLASH_OFFSET_IN_CHUNK(i)]));
+ fwimg[BFA_IOC_FLASH_OFFSET_IN_CHUNK(i)]);
loff += sizeof(u32);
ioc->ioc_regs.host_page_num_fn);
/*
- * Set boot type and device mode at the end.
+ * Set boot type, env and device mode at the end.
*/
+ if (boot_env == BFI_FWBOOT_ENV_OS &&
+ boot_type == BFI_FWBOOT_TYPE_FLASH) {
+ boot_type = BFI_FWBOOT_TYPE_NORMAL;
+ }
asicmode = BFI_FWBOOT_DEVMODE(ioc->asic_gen, ioc->asic_mode,
ioc->port0_mode, ioc->port1_mode);
bfa_mem_write(ioc->ioc_regs.smem_page_start, BFI_FWBOOT_DEVMODE_OFF,
swab32(boot_type));
bfa_mem_write(ioc->ioc_regs.smem_page_start, BFI_FWBOOT_ENV_OFF,
swab32(boot_env));
+ return BFA_STATUS_OK;
}
* Interface used by diag module to do firmware boot with memory test
* as the entry vector.
*/
-void
+bfa_status_t
bfa_ioc_boot(struct bfa_ioc_s *ioc, u32 boot_type, u32 boot_env)
{
+ struct bfi_ioc_image_hdr_s *drv_fwhdr;
+ bfa_status_t status;
bfa_ioc_stats(ioc, ioc_boots);
if (bfa_ioc_pll_init(ioc) != BFA_STATUS_OK)
- return;
+ return BFA_STATUS_FAILED;
+
+ if (boot_env == BFI_FWBOOT_ENV_OS &&
+ boot_type == BFI_FWBOOT_TYPE_NORMAL) {
+
+ drv_fwhdr = (struct bfi_ioc_image_hdr_s *)
+ bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), 0);
+
+ /*
+ * Work with Flash iff flash f/w is better than driver f/w.
+ * Otherwise push drivers firmware.
+ */
+ if (bfa_ioc_flash_fwver_cmp(ioc, drv_fwhdr) ==
+ BFI_IOC_IMG_VER_BETTER)
+ boot_type = BFI_FWBOOT_TYPE_FLASH;
+ }
/*
* Initialize IOC state of all functions on a chip reset.
}
bfa_ioc_msgflush(ioc);
- bfa_ioc_download_fw(ioc, boot_type, boot_env);
- bfa_ioc_lpu_start(ioc);
+ status = bfa_ioc_download_fw(ioc, boot_type, boot_env);
+ if (status == BFA_STATUS_OK)
+ bfa_ioc_lpu_start(ioc);
+ else {
+ WARN_ON(boot_type == BFI_FWBOOT_TYPE_MEMTEST);
+ bfa_iocpf_timeout(ioc);
+ }
+ return status;
}
/*
bfa_fsm_cmp_state(&ioc->iocpf, bfa_iocpf_sm_mismatch);
}
-#define bfa_ioc_state_disabled(__sm) \
- (((__sm) == BFI_IOC_UNINIT) || \
- ((__sm) == BFI_IOC_INITING) || \
- ((__sm) == BFI_IOC_HWINIT) || \
- ((__sm) == BFI_IOC_DISABLED) || \
- ((__sm) == BFI_IOC_FAIL) || \
- ((__sm) == BFI_IOC_CFG_DISABLED))
-
/*
* Check if adapter is disabled -- both IOCs should be in a disabled
* state.
WARN_ON(1);
}
}
+
+/*
+ * register definitions
+ */
+#define FLI_CMD_REG 0x0001d000
+#define FLI_RDDATA_REG 0x0001d010
+#define FLI_ADDR_REG 0x0001d004
+#define FLI_DEV_STATUS_REG 0x0001d014
+
+#define BFA_FLASH_FIFO_SIZE 128 /* fifo size */
+#define BFA_FLASH_CHECK_MAX 10000 /* max # of status check */
+#define BFA_FLASH_BLOCKING_OP_MAX 1000000 /* max # of blocking op check */
+#define BFA_FLASH_WIP_MASK 0x01 /* write in progress bit mask */
+
+enum bfa_flash_cmd {
+ BFA_FLASH_FAST_READ = 0x0b, /* fast read */
+ BFA_FLASH_READ_STATUS = 0x05, /* read status */
+};
+
+/**
+ * @brief hardware error definition
+ */
+enum bfa_flash_err {
+ BFA_FLASH_NOT_PRESENT = -1, /*!< flash not present */
+ BFA_FLASH_UNINIT = -2, /*!< flash not initialized */
+ BFA_FLASH_BAD = -3, /*!< flash bad */
+ BFA_FLASH_BUSY = -4, /*!< flash busy */
+ BFA_FLASH_ERR_CMD_ACT = -5, /*!< command active never cleared */
+ BFA_FLASH_ERR_FIFO_CNT = -6, /*!< fifo count never cleared */
+ BFA_FLASH_ERR_WIP = -7, /*!< write-in-progress never cleared */
+ BFA_FLASH_ERR_TIMEOUT = -8, /*!< fli timeout */
+ BFA_FLASH_ERR_LEN = -9, /*!< invalid length */
+};
+
+/**
+ * @brief flash command register data structure
+ */
+union bfa_flash_cmd_reg_u {
+ struct {
+#ifdef __BIG_ENDIAN
+ u32 act:1;
+ u32 rsv:1;
+ u32 write_cnt:9;
+ u32 read_cnt:9;
+ u32 addr_cnt:4;
+ u32 cmd:8;
+#else
+ u32 cmd:8;
+ u32 addr_cnt:4;
+ u32 read_cnt:9;
+ u32 write_cnt:9;
+ u32 rsv:1;
+ u32 act:1;
+#endif
+ } r;
+ u32 i;
+};
+
+/**
+ * @brief flash device status register data structure
+ */
+union bfa_flash_dev_status_reg_u {
+ struct {
+#ifdef __BIG_ENDIAN
+ u32 rsv:21;
+ u32 fifo_cnt:6;
+ u32 busy:1;
+ u32 init_status:1;
+ u32 present:1;
+ u32 bad:1;
+ u32 good:1;
+#else
+ u32 good:1;
+ u32 bad:1;
+ u32 present:1;
+ u32 init_status:1;
+ u32 busy:1;
+ u32 fifo_cnt:6;
+ u32 rsv:21;
+#endif
+ } r;
+ u32 i;
+};
+
+/**
+ * @brief flash address register data structure
+ */
+union bfa_flash_addr_reg_u {
+ struct {
+#ifdef __BIG_ENDIAN
+ u32 addr:24;
+ u32 dummy:8;
+#else
+ u32 dummy:8;
+ u32 addr:24;
+#endif
+ } r;
+ u32 i;
+};
+
+/**
+ * dg flash_raw_private Flash raw private functions
+ */
+static void
+bfa_flash_set_cmd(void __iomem *pci_bar, u8 wr_cnt,
+ u8 rd_cnt, u8 ad_cnt, u8 op)
+{
+ union bfa_flash_cmd_reg_u cmd;
+
+ cmd.i = 0;
+ cmd.r.act = 1;
+ cmd.r.write_cnt = wr_cnt;
+ cmd.r.read_cnt = rd_cnt;
+ cmd.r.addr_cnt = ad_cnt;
+ cmd.r.cmd = op;
+ writel(cmd.i, (pci_bar + FLI_CMD_REG));
+}
+
+static void
+bfa_flash_set_addr(void __iomem *pci_bar, u32 address)
+{
+ union bfa_flash_addr_reg_u addr;
+
+ addr.r.addr = address & 0x00ffffff;
+ addr.r.dummy = 0;
+ writel(addr.i, (pci_bar + FLI_ADDR_REG));
+}
+
+static int
+bfa_flash_cmd_act_check(void __iomem *pci_bar)
+{
+ union bfa_flash_cmd_reg_u cmd;
+
+ cmd.i = readl(pci_bar + FLI_CMD_REG);
+
+ if (cmd.r.act)
+ return BFA_FLASH_ERR_CMD_ACT;
+
+ return 0;
+}
+
+/**
+ * @brief
+ * Flush FLI data fifo.
+ *
+ * @param[in] pci_bar - pci bar address
+ * @param[in] dev_status - device status
+ *
+ * Return 0 on success, negative error number on error.
+ */
+static u32
+bfa_flash_fifo_flush(void __iomem *pci_bar)
+{
+ u32 i;
+ u32 t;
+ union bfa_flash_dev_status_reg_u dev_status;
+
+ dev_status.i = readl(pci_bar + FLI_DEV_STATUS_REG);
+
+ if (!dev_status.r.fifo_cnt)
+ return 0;
+
+ /* fifo counter in terms of words */
+ for (i = 0; i < dev_status.r.fifo_cnt; i++)
+ t = readl(pci_bar + FLI_RDDATA_REG);
+
+ /*
+ * Check the device status. It may take some time.
+ */
+ for (i = 0; i < BFA_FLASH_CHECK_MAX; i++) {
+ dev_status.i = readl(pci_bar + FLI_DEV_STATUS_REG);
+ if (!dev_status.r.fifo_cnt)
+ break;
+ }
+
+ if (dev_status.r.fifo_cnt)
+ return BFA_FLASH_ERR_FIFO_CNT;
+
+ return 0;
+}
+
+/**
+ * @brief
+ * Read flash status.
+ *
+ * @param[in] pci_bar - pci bar address
+ *
+ * Return 0 on success, negative error number on error.
+*/
+static u32
+bfa_flash_status_read(void __iomem *pci_bar)
+{
+ union bfa_flash_dev_status_reg_u dev_status;
+ u32 status;
+ u32 ret_status;
+ int i;
+
+ status = bfa_flash_fifo_flush(pci_bar);
+ if (status < 0)
+ return status;
+
+ bfa_flash_set_cmd(pci_bar, 0, 4, 0, BFA_FLASH_READ_STATUS);
+
+ for (i = 0; i < BFA_FLASH_CHECK_MAX; i++) {
+ status = bfa_flash_cmd_act_check(pci_bar);
+ if (!status)
+ break;
+ }
+
+ if (status)
+ return status;
+
+ dev_status.i = readl(pci_bar + FLI_DEV_STATUS_REG);
+ if (!dev_status.r.fifo_cnt)
+ return BFA_FLASH_BUSY;
+
+ ret_status = readl(pci_bar + FLI_RDDATA_REG);
+ ret_status >>= 24;
+
+ status = bfa_flash_fifo_flush(pci_bar);
+ if (status < 0)
+ return status;
+
+ return ret_status;
+}
+
+/**
+ * @brief
+ * Start flash read operation.
+ *
+ * @param[in] pci_bar - pci bar address
+ * @param[in] offset - flash address offset
+ * @param[in] len - read data length
+ * @param[in] buf - read data buffer
+ *
+ * Return 0 on success, negative error number on error.
+ */
+static u32
+bfa_flash_read_start(void __iomem *pci_bar, u32 offset, u32 len,
+ char *buf)
+{
+ u32 status;
+
+ /*
+ * len must be mutiple of 4 and not exceeding fifo size
+ */
+ if (len == 0 || len > BFA_FLASH_FIFO_SIZE || (len & 0x03) != 0)
+ return BFA_FLASH_ERR_LEN;
+
+ /*
+ * check status
+ */
+ status = bfa_flash_status_read(pci_bar);
+ if (status == BFA_FLASH_BUSY)
+ status = bfa_flash_status_read(pci_bar);
+
+ if (status < 0)
+ return status;
+
+ /*
+ * check if write-in-progress bit is cleared
+ */
+ if (status & BFA_FLASH_WIP_MASK)
+ return BFA_FLASH_ERR_WIP;
+
+ bfa_flash_set_addr(pci_bar, offset);
+
+ bfa_flash_set_cmd(pci_bar, 0, (u8)len, 4, BFA_FLASH_FAST_READ);
+
+ return 0;
+}
+
+/**
+ * @brief
+ * Check flash read operation.
+ *
+ * @param[in] pci_bar - pci bar address
+ *
+ * Return flash device status, 1 if busy, 0 if not.
+ */
+static u32
+bfa_flash_read_check(void __iomem *pci_bar)
+{
+ if (bfa_flash_cmd_act_check(pci_bar))
+ return 1;
+
+ return 0;
+}
+/**
+ * @brief
+ * End flash read operation.
+ *
+ * @param[in] pci_bar - pci bar address
+ * @param[in] len - read data length
+ * @param[in] buf - read data buffer
+ *
+ */
+static void
+bfa_flash_read_end(void __iomem *pci_bar, u32 len, char *buf)
+{
+
+ u32 i;
+
+ /*
+ * read data fifo up to 32 words
+ */
+ for (i = 0; i < len; i += 4) {
+ u32 w = readl(pci_bar + FLI_RDDATA_REG);
+ *((u32 *) (buf + i)) = swab32(w);
+ }
+
+ bfa_flash_fifo_flush(pci_bar);
+}
+
+/**
+ * @brief
+ * Perform flash raw read.
+ *
+ * @param[in] pci_bar - pci bar address
+ * @param[in] offset - flash partition address offset
+ * @param[in] buf - read data buffer
+ * @param[in] len - read data length
+ *
+ * Return status.
+ */
+
+
+#define FLASH_BLOCKING_OP_MAX 500
+#define FLASH_SEM_LOCK_REG 0x18820
+
+static int
+bfa_raw_sem_get(void __iomem *bar)
+{
+ int locked;
+
+ locked = readl((bar + FLASH_SEM_LOCK_REG));
+ return !locked;
+
+}
+
+bfa_status_t
+bfa_flash_sem_get(void __iomem *bar)
+{
+ u32 n = FLASH_BLOCKING_OP_MAX;
+
+ while (!bfa_raw_sem_get(bar)) {
+ if (--n <= 0)
+ return BFA_STATUS_BADFLASH;
+ udelay(10000);
+ }
+ return BFA_STATUS_OK;
+}
+
+void
+bfa_flash_sem_put(void __iomem *bar)
+{
+ writel(0, (bar + FLASH_SEM_LOCK_REG));
+}
+
+bfa_status_t
+bfa_flash_raw_read(void __iomem *pci_bar, u32 offset, char *buf,
+ u32 len)
+{
+ u32 n, status;
+ u32 off, l, s, residue, fifo_sz;
+
+ residue = len;
+ off = 0;
+ fifo_sz = BFA_FLASH_FIFO_SIZE;
+ status = bfa_flash_sem_get(pci_bar);
+ if (status != BFA_STATUS_OK)
+ return status;
+
+ while (residue) {
+ s = offset + off;
+ n = s / fifo_sz;
+ l = (n + 1) * fifo_sz - s;
+ if (l > residue)
+ l = residue;
+
+ status = bfa_flash_read_start(pci_bar, offset + off, l,
+ &buf[off]);
+ if (status < 0) {
+ bfa_flash_sem_put(pci_bar);
+ return BFA_STATUS_FAILED;
+ }
+
+ n = BFA_FLASH_BLOCKING_OP_MAX;
+ while (bfa_flash_read_check(pci_bar)) {
+ if (--n <= 0) {
+ bfa_flash_sem_put(pci_bar);
+ return BFA_STATUS_FAILED;
+ }
+ }
+
+ bfa_flash_read_end(pci_bar, l, &buf[off]);
+
+ residue -= l;
+ off += l;
+ }
+ bfa_flash_sem_put(pci_bar);
+
+ return BFA_STATUS_OK;
+}
projects / cascardo / linux.git / blobdiff