[SCSI] qla2xxx: Add support for new flash part.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

2 files changed, 83 insertions, 12 deletions

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 53508f3c4ae9..488124258e84 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -270,6 +270,8 @@ struct device_reg_2xxx {
 #define NVR_SELECT              BIT_1
 #define NVR_CLOCK               BIT_0
 
+#define NVR_WAIT_CNT            20000
+
         union {
                 struct {
                         uint16_t mailbox0;
diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c
index 8b0121dceb01..c71dbd5bd543 100644
--- a/drivers/scsi/qla2xxx/qla_sup.c
+++ b/drivers/scsi/qla2xxx/qla_sup.c
@@ -97,7 +97,7 @@ qla2x00_write_nvram_word(scsi_qla_host_t *ha, uint32_t addr, uint16_t data)
 {
         int count;
         uint16_t word;
-        uint32_t nv_cmd;
+        uint32_t nv_cmd, wait_cnt;
         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 
         qla2x00_nv_write(ha, NVR_DATA_OUT);
@@ -127,7 +127,13 @@ qla2x00_write_nvram_word(scsi_qla_host_t *ha, uint32_t addr, uint16_t data)
         /* Wait for NVRAM to become ready */
         WRT_REG_WORD(&reg->nvram, NVR_SELECT);
         RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
+        wait_cnt = NVR_WAIT_CNT;
         do {
+                if (!--wait_cnt) {
+                        DEBUG9_10(printk("%s(%ld): NVRAM didn't go ready...\n",
+                            __func__, ha->host_no));
+                        break;
+                }
                 NVRAM_DELAY();
                 word = RD_REG_WORD(&reg->nvram);
         } while ((word & NVR_DATA_IN) == 0);
@@ -301,16 +307,17 @@ qla2x00_clear_nvram_protection(scsi_qla_host_t *ha)
 {
         int ret, stat;
         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
-        uint32_t word;
+        uint32_t word, wait_cnt;
         uint16_t wprot, wprot_old;
 
         /* Clear NVRAM write protection. */
         ret = QLA_FUNCTION_FAILED;
-        wprot_old = cpu_to_le16(qla2x00_get_nvram_word(ha, 0));
-        stat = qla2x00_write_nvram_word_tmo(ha, 0,
+
+        wprot_old = cpu_to_le16(qla2x00_get_nvram_word(ha, ha->nvram_base));
+        stat = qla2x00_write_nvram_word_tmo(ha, ha->nvram_base,
             __constant_cpu_to_le16(0x1234), 100000);
-        wprot = cpu_to_le16(qla2x00_get_nvram_word(ha, 0));
-        if (stat != QLA_SUCCESS || wprot != __constant_cpu_to_le16(0x1234)) {
+        wprot = cpu_to_le16(qla2x00_get_nvram_word(ha, ha->nvram_base));
+        if (stat != QLA_SUCCESS || wprot != 0x1234) {
                 /* Write enable. */
                 qla2x00_nv_write(ha, NVR_DATA_OUT);
                 qla2x00_nv_write(ha, 0);
@@ -341,14 +348,22 @@ qla2x00_clear_nvram_protection(scsi_qla_host_t *ha)
                 /* Wait for NVRAM to become ready. */
                 WRT_REG_WORD(&reg->nvram, NVR_SELECT);
                 RD_REG_WORD(&reg->nvram);       /* PCI Posting. */
+                wait_cnt = NVR_WAIT_CNT;
                 do {
+                        if (!--wait_cnt) {
+                                DEBUG9_10(printk("%s(%ld): NVRAM didn't go "
+                                    "ready...\n", __func__,
+                                    ha->host_no));
+                                break;
+                        }
                         NVRAM_DELAY();
                         word = RD_REG_WORD(&reg->nvram);
                 } while ((word & NVR_DATA_IN) == 0);
 
-                ret = QLA_SUCCESS;
+                if (wait_cnt)
+                        ret = QLA_SUCCESS;
         } else
-                qla2x00_write_nvram_word(ha, 0, wprot_old);
+                qla2x00_write_nvram_word(ha, ha->nvram_base, wprot_old);
 
         return ret;
 }
@@ -357,7 +372,7 @@ static void
 qla2x00_set_nvram_protection(scsi_qla_host_t *ha, int stat)
 {
         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
-        uint32_t word;
+        uint32_t word, wait_cnt;
 
         if (stat != QLA_SUCCESS)
                 return;
@@ -393,7 +408,13 @@ qla2x00_set_nvram_protection(scsi_qla_host_t *ha, int stat)
         /* Wait for NVRAM to become ready. */
         WRT_REG_WORD(&reg->nvram, NVR_SELECT);
         RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
+        wait_cnt = NVR_WAIT_CNT;
         do {
+                if (!--wait_cnt) {
+                        DEBUG9_10(printk("%s(%ld): NVRAM didn't go ready...\n",
+                            __func__, ha->host_no));
+                        break;
+                }
                 NVRAM_DELAY();
                 word = RD_REG_WORD(&reg->nvram);
         } while ((word & NVR_DATA_IN) == 0);
@@ -500,6 +521,20 @@ qla24xx_get_flash_manufacturer(scsi_qla_host_t *ha, uint8_t *man_id,
         ids = qla24xx_read_flash_dword(ha, flash_data_to_access_addr(0xd03ab));
         *man_id = LSB(ids);
         *flash_id = MSB(ids);
+
+        /* Check if man_id and flash_id are valid. */
+        if (ids != 0xDEADDEAD && (*man_id == 0 || *flash_id == 0)) {
+                /* Read information using 0x9f opcode
+                 * Device ID, Mfg ID would be read in the format:
+                 *   <Ext Dev Info><Device ID Part2><Device ID Part 1><Mfg ID>
+                 * Example: ATMEL 0x00 01 45 1F
+                 * Extract MFG and Dev ID from last two bytes.
+                 */
+                ids = qla24xx_read_flash_dword(ha,
+                    flash_data_to_access_addr(0xd009f));
+                *man_id = LSB(ids);
+                *flash_id = MSB(ids);
+        }
 }
 
 int
@@ -508,8 +543,8 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr,
 {
         int ret;
         uint32_t liter;
-        uint32_t sec_mask, rest_addr, conf_addr;
-        uint32_t fdata;
+        uint32_t sec_mask, rest_addr, conf_addr, sec_end_mask;
+        uint32_t fdata, findex ;
         uint8_t man_id, flash_id;
         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
 
@@ -519,6 +554,7 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr,
         DEBUG9(printk("%s(%ld): Flash man_id=%d flash_id=%d\n", __func__,
             ha->host_no, man_id, flash_id));
 
+        sec_end_mask = 0;
         conf_addr = flash_conf_to_access_addr(0x03d8);
         switch (man_id) {
         case 0xbf: /* STT flash. */
@@ -531,6 +567,12 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr,
                 rest_addr = 0x3fff;
                 sec_mask = 0x3c000;
                 break;
+        case 0x1f: // Atmel 26DF081A
+                rest_addr = 0x0fff;
+                sec_mask = 0xff000;
+                sec_end_mask = 0x003ff;
+                conf_addr = flash_conf_to_access_addr(0x0320);
+                break;
         default:
                 /* Default to 64 kb sector size. */
                 rest_addr = 0x3fff;
@@ -545,11 +587,30 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr,
 
         /* Disable flash write-protection. */
         qla24xx_write_flash_dword(ha, flash_conf_to_access_addr(0x101), 0);
+        /* Some flash parts need an additional zero-write to clear bits.*/
+        qla24xx_write_flash_dword(ha, flash_conf_to_access_addr(0x101), 0);
 
         do {    /* Loop once to provide quick error exit. */
                 for (liter = 0; liter < dwords; liter++, faddr++, dwptr++) {
+                        if (man_id == 0x1f) {
+                                findex = faddr << 2;
+                                fdata = findex & sec_mask;
+                        } else {
+                                findex = faddr;
+                                fdata = (findex & sec_mask) << 2;
+                        }
+
                         /* Are we at the beginning of a sector? */
-                        if ((faddr & rest_addr) == 0) {
+                        if ((findex & rest_addr) == 0) {
+                                /*
+                                 * Do sector unprotect at 4K boundry for Atmel
+                                 * part.
+                                 */
+                                if (man_id == 0x1f)
+                                        qla24xx_write_flash_dword(ha,
+                                            flash_conf_to_access_addr(0x0339),
+                                            (fdata & 0xff00) | ((fdata << 16) &
+                                            0xff0000) | ((fdata >> 16) & 0xff));
                                 fdata = (faddr & sec_mask) << 2;
                                 ret = qla24xx_write_flash_dword(ha, conf_addr,
                                     (fdata & 0xff00) |((fdata << 16) &
@@ -570,6 +631,14 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr,
                                     ha->host_no, faddr, *dwptr));
                                 break;
                         }
+
+                        /* Do sector protect at 4K boundry for Atmel part. */
+                        if (man_id == 0x1f &&
+                            ((faddr & sec_end_mask) == 0x3ff))
+                                qla24xx_write_flash_dword(ha,
+                                    flash_conf_to_access_addr(0x0336),
+                                    (fdata & 0xff00) | ((fdata << 16) &
+                                    0xff0000) | ((fdata >> 16) & 0xff));
                 }
         } while (0);