- Updates csio_get_flash_params() to take care of ISSI, Macronix and
Winbond FLASH parts.
- Assume flash part size to be 4MB if it cannot be identified
Signed-off-by: Arjun Vynipadath
Signed-off-by: Varun Prakash
---
drivers/scsi/csiostor/csio_hw.c | 150
1 file changed, 137 insertions(+), 13 deletions(-)
diff --git a/drivers/scsi/csiostor/csio_hw.c b/drivers/scsi/csiostor/csio_hw.c
index a10cf25..618581c 100644
--- a/drivers/scsi/csiostor/csio_hw.c
+++ b/drivers/scsi/csiostor/csio_hw.c
@@ -761,27 +761,151 @@ csio_hw_fw_dload(struct csio_hw *hw, uint8_t *fw_data,
uint32_t size)
static int
csio_hw_get_flash_params(struct csio_hw *hw)
{
+ /* Table for non-Numonix supported flash parts. Numonix parts are left
+* to the preexisting code. All flash parts have 64KB sectors.
+*/
+ static struct flash_desc {
+ u32 vendor_and_model_id;
+ u32 size_mb;
+ } supported_flash[] = {
+ { 0x150201, 4 << 20 }, /* Spansion 4MB S25FL032P */
+ };
+
+ u32 part, manufacturer;
+ u32 density, size = 0;
+ u32 flashid = 0;
int ret;
- uint32_t info = 0;
ret = csio_hw_sf1_write(hw, 1, 1, 0, SF_RD_ID);
if (!ret)
- ret = csio_hw_sf1_read(hw, 3, 0, 1, );
+ ret = csio_hw_sf1_read(hw, 3, 0, 1, );
csio_wr_reg32(hw, 0, SF_OP_A);/* unlock SF */
- if (ret != 0)
+ if (ret)
return ret;
- if ((info & 0xff) != 0x20) /* not a Numonix flash */
- return -EINVAL;
- info >>= 16;/* log2 of size */
- if (info >= 0x14 && info < 0x18)
- hw->params.sf_nsec = 1 << (info - 16);
- else if (info == 0x18)
- hw->params.sf_nsec = 64;
- else
- return -EINVAL;
- hw->params.sf_size = 1 << info;
+ /* Check to see if it's one of our non-standard supported Flash parts.
+*/
+ for (part = 0; part < ARRAY_SIZE(supported_flash); part++)
+ if (supported_flash[part].vendor_and_model_id == flashid) {
+ hw->params.sf_size = supported_flash[part].size_mb;
+ hw->params.sf_nsec =
+ hw->params.sf_size / SF_SEC_SIZE;
+ goto found;
+ }
+
+ /* Decode Flash part size. The code below looks repetative with
+* common encodings, but that's not guaranteed in the JEDEC
+* specification for the Read JADEC ID command. The only thing that
+* we're guaranteed by the JADEC specification is where the
+* Manufacturer ID is in the returned result. After that each
+* Manufacturer ~could~ encode things completely differently.
+* Note, all Flash parts must have 64KB sectors.
+*/
+ manufacturer = flashid & 0xff;
+ switch (manufacturer) {
+ case 0x20: { /* Micron/Numonix */
+ /* This Density -> Size decoding table is taken from Micron
+* Data Sheets.
+*/
+ density = (flashid >> 16) & 0xff;
+ switch (density) {
+ case 0x14: /* 1MB */
+ size = 1 << 20;
+ break;
+ case 0x15: /* 2MB */
+ size = 1 << 21;
+ break;
+ case 0x16: /* 4MB */
+ size = 1 << 22;
+ break;
+ case 0x17: /* 8MB */
+ size = 1 << 23;
+ break;
+ case 0x18: /* 16MB */
+ size = 1 << 24;
+ break;
+ case 0x19: /* 32MB */
+ size = 1 << 25;
+ break;
+ case 0x20: /* 64MB */
+ size = 1 << 26;
+ break;
+ case 0x21: /* 128MB */
+ size = 1 << 27;
+ break;
+ case 0x22: /* 256MB */
+ size = 1 << 28;
+ break;
+ }
+ break;
+ }
+ case 0x9d: { /* ISSI -- Integrated Silicon Solution, Inc. */
+ /* This Density -> Size decoding table is taken from ISSI
+* Data Sheets.
+*/
+ density = (flashid >> 16) & 0xff;
+ switch (density) {
+ case 0x16: /* 32 MB */
+ size = 1 << 25;
+ break;
+ case 0x17: /* 64MB */
+ size = 1 << 26;
+ break;
+ }
+ break;
+ }
+ case 0xc2: { /* Macronix */
+ /* This Density -> Size decoding table is taken from Macronix
+* Data Sheets.
+
