diff options
Diffstat (limited to 'drivers/scsi/aic94xx/aic94xx_sds.c')
| -rw-r--r-- | drivers/scsi/aic94xx/aic94xx_sds.c | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/drivers/scsi/aic94xx/aic94xx_sds.c b/drivers/scsi/aic94xx/aic94xx_sds.c index 06509bff71f7..2a4c933eb89c 100644 --- a/drivers/scsi/aic94xx/aic94xx_sds.c +++ b/drivers/scsi/aic94xx/aic94xx_sds.c @@ -30,6 +30,7 @@ #include "aic94xx.h" #include "aic94xx_reg.h" +#include "aic94xx_sds.h" /* ---------- OCM stuff ---------- */ @@ -1083,3 +1084,391 @@ out: kfree(flash_dir); return err; } + +/** + * asd_verify_flash_seg - verify data with flash memory + * @asd_ha: pointer to the host adapter structure + * @src: pointer to the source data to be verified + * @dest_offset: offset from flash memory + * @bytes_to_verify: total bytes to verify + */ +int asd_verify_flash_seg(struct asd_ha_struct *asd_ha, + void *src, u32 dest_offset, u32 bytes_to_verify) +{ + u8 *src_buf; + u8 flash_char; + int err; + u32 nv_offset, reg, i; + + reg = asd_ha->hw_prof.flash.bar; + src_buf = NULL; + + err = FLASH_OK; + nv_offset = dest_offset; + src_buf = (u8 *)src; + for (i = 0; i < bytes_to_verify; i++) { + flash_char = asd_read_reg_byte(asd_ha, reg + nv_offset + i); + if (flash_char != src_buf[i]) { + err = FAIL_VERIFY; + break; + } + } + return err; +} + +/** + * asd_write_flash_seg - write data into flash memory + * @asd_ha: pointer to the host adapter structure + * @src: pointer to the source data to be written + * @dest_offset: offset from flash memory + * @bytes_to_write: total bytes to write + */ +int asd_write_flash_seg(struct asd_ha_struct *asd_ha, + void *src, u32 dest_offset, u32 bytes_to_write) +{ + u8 *src_buf; + u32 nv_offset, reg, i; + int err; + + reg = asd_ha->hw_prof.flash.bar; + src_buf = NULL; + + err = asd_check_flash_type(asd_ha); + if (err) { + ASD_DPRINTK("couldn't find the type of flash. err=%d\n", err); + return err; + } + + nv_offset = dest_offset; + err = asd_erase_nv_sector(asd_ha, nv_offset, bytes_to_write); + if (err) { + ASD_DPRINTK("Erase failed at offset:0x%x\n", + nv_offset); + return err; + } + + err = asd_reset_flash(asd_ha); + if (err) { + ASD_DPRINTK("couldn't reset flash. err=%d\n", err); + return err; + } + + src_buf = (u8 *)src; + for (i = 0; i < bytes_to_write; i++) { + /* Setup program command sequence */ + switch (asd_ha->hw_prof.flash.method) { + case FLASH_METHOD_A: + { + asd_write_reg_byte(asd_ha, + (reg + 0xAAA), 0xAA); + asd_write_reg_byte(asd_ha, + (reg + 0x555), 0x55); + asd_write_reg_byte(asd_ha, + (reg + 0xAAA), 0xA0); + asd_write_reg_byte(asd_ha, + (reg + nv_offset + i), + (*(src_buf + i))); + break; + } + case FLASH_METHOD_B: + { + asd_write_reg_byte(asd_ha, + (reg + 0x555), 0xAA); + asd_write_reg_byte(asd_ha, + (reg + 0x2AA), 0x55); + asd_write_reg_byte(asd_ha, + (reg + 0x555), 0xA0); + asd_write_reg_byte(asd_ha, + (reg + nv_offset + i), + (*(src_buf + i))); + break; + } + default: + break; + } + if (asd_chk_write_status(asd_ha, + (nv_offset + i), 0) != 0) { + ASD_DPRINTK("aicx: Write failed at offset:0x%x\n", + reg + nv_offset + i); + return FAIL_WRITE_FLASH; + } + } + + err = asd_reset_flash(asd_ha); + if (err) { + ASD_DPRINTK("couldn't reset flash. err=%d\n", err); + return err; + } + return 0; +} + +int asd_chk_write_status(struct asd_ha_struct *asd_ha, + u32 sector_addr, u8 erase_flag) +{ + u32 reg; + u32 loop_cnt; + u8 nv_data1, nv_data2; + u8 toggle_bit1; + + /* + * Read from DQ2 requires sector address + * while it's dont care for DQ6 + */ + reg = asd_ha->hw_prof.flash.bar; + + for (loop_cnt = 0; loop_cnt < 50000; loop_cnt++) { + nv_data1 = asd_read_reg_byte(asd_ha, reg); + nv_data2 = asd_read_reg_byte(asd_ha, reg); + + toggle_bit1 = ((nv_data1 & FLASH_STATUS_BIT_MASK_DQ6) + ^ (nv_data2 & FLASH_STATUS_BIT_MASK_DQ6)); + + if (toggle_bit1 == 0) { + return 0; + } else { + if (nv_data2 & FLASH_STATUS_BIT_MASK_DQ5) { + nv_data1 = asd_read_reg_byte(asd_ha, + reg); + nv_data2 = asd_read_reg_byte(asd_ha, + reg); + toggle_bit1 = + ((nv_data1 & FLASH_STATUS_BIT_MASK_DQ6) + ^ (nv_data2 & FLASH_STATUS_BIT_MASK_DQ6)); + + if (toggle_bit1 == 0) + return 0; + } + } + + /* + * ERASE is a sector-by-sector operation and requires + * more time to finish while WRITE is byte-byte-byte + * operation and takes lesser time to finish. + * + * For some strange reason a reduced ERASE delay gives different + * behaviour across different spirit boards. Hence we set + * a optimum balance of 50mus for ERASE which works well + * across all boards. + */ + if (erase_flag) { + udelay(FLASH_STATUS_ERASE_DELAY_COUNT); + } else { + udelay(FLASH_STATUS_WRITE_DELAY_COUNT); + } + } + return -1; +} + +/** + * asd_hwi_erase_nv_sector - Erase the flash memory sectors. + * @asd_ha: pointer to the host adapter structure + * @flash_addr: pointer to offset from flash memory + * @size: total bytes to erase. + */ +int asd_erase_nv_sector(struct asd_ha_struct *asd_ha, u32 flash_addr, u32 size) +{ + u32 reg; + u32 sector_addr; + + reg = asd_ha->hw_prof.flash.bar; + + /* sector staring address */ + sector_addr = flash_addr & FLASH_SECTOR_SIZE_MASK; + + /* + * Erasing an flash sector needs to be done in six consecutive + * write cyles. + */ + while (sector_addr < flash_addr+size) { + switch (asd_ha->hw_prof.flash.method) { + case FLASH_METHOD_A: + asd_write_reg_byte(asd_ha, (reg + 0xAAA), 0xAA); + asd_write_reg_byte(asd_ha, (reg + 0x555), 0x55); + asd_write_reg_byte(asd_ha, (reg + 0xAAA), 0x80); + asd_write_reg_byte(asd_ha, (reg + 0xAAA), 0xAA); + asd_write_reg_byte(asd_ha, (reg + 0x555), 0x55); + asd_write_reg_byte(asd_ha, (reg + sector_addr), 0x30); + break; + case FLASH_METHOD_B: + asd_write_reg_byte(asd_ha, (reg + 0x555), 0xAA); + asd_write_reg_byte(asd_ha, (reg + 0x2AA), 0x55); + asd_write_reg_byte(asd_ha, (reg + 0x555), 0x80); + asd_write_reg_byte(asd_ha, (reg + 0x555), 0xAA); + asd_write_reg_byte(asd_ha, (reg + 0x2AA), 0x55); + asd_write_reg_byte(asd_ha, (reg + sector_addr), 0x30); + break; + default: + break; + } + + if (asd_chk_write_status(asd_ha, sector_addr, 1) != 0) + return FAIL_ERASE_FLASH; + + sector_addr += FLASH_SECTOR_SIZE; + } + + return 0; +} + +int asd_check_flash_type(struct asd_ha_struct *asd_ha) +{ + u8 manuf_id; + u8 dev_id; + u8 sec_prot; + u32 inc; + u32 reg; + int err; + + /* get Flash memory base address */ + reg = asd_ha->hw_prof.flash.bar; + + /* Determine flash info */ + err = asd_reset_flash(asd_ha); + if (err) { + ASD_DPRINTK("couldn't reset flash. err=%d\n", err); + return err; + } + + asd_ha->hw_prof.flash.method = FLASH_METHOD_UNKNOWN; + asd_ha->hw_prof.flash.manuf = FLASH_MANUF_ID_UNKNOWN; + asd_ha->hw_prof.flash.dev_id = FLASH_DEV_ID_UNKNOWN; + + /* Get flash info. This would most likely be AMD Am29LV family flash. + * First try the sequence for word mode. It is the same as for + * 008B (byte mode only), 160B (word mode) and 800D (word mode). + */ + inc = asd_ha->hw_prof.flash.wide ? 2 : 1; + asd_write_reg_byte(asd_ha, reg + 0xAAA, 0xAA); + asd_write_reg_byte(asd_ha, reg + 0x555, 0x55); + asd_write_reg_byte(asd_ha, reg + 0xAAA, 0x90); + manuf_id = asd_read_reg_byte(asd_ha, reg); + dev_id = asd_read_reg_byte(asd_ha, reg + inc); + sec_prot = asd_read_reg_byte(asd_ha, reg + inc + inc); + /* Get out of autoselect mode. */ + err = asd_reset_flash(asd_ha); + if (err) { + ASD_DPRINTK("couldn't reset flash. err=%d\n", err); + return err; + } + ASD_DPRINTK("Flash MethodA manuf_id(0x%x) dev_id(0x%x) " + "sec_prot(0x%x)\n", manuf_id, dev_id, sec_prot); + err = asd_reset_flash(asd_ha); + if (err != 0) + return err; + + switch (manuf_id) { + case FLASH_MANUF_ID_AMD: + switch (sec_prot) { + case FLASH_DEV_ID_AM29LV800DT: + case FLASH_DEV_ID_AM29LV640MT: + case FLASH_DEV_ID_AM29F800B: + asd_ha->hw_prof.flash.method = FLASH_METHOD_A; + break; + default: + break; + } + break; + case FLASH_MANUF_ID_ST: + switch (sec_prot) { + case FLASH_DEV_ID_STM29W800DT: + case FLASH_DEV_ID_STM29LV640: + asd_ha->hw_prof.flash.method = FLASH_METHOD_A; + break; + default: + break; + } + break; + case FLASH_MANUF_ID_FUJITSU: + switch (sec_prot) { + case FLASH_DEV_ID_MBM29LV800TE: + case FLASH_DEV_ID_MBM29DL800TA: + asd_ha->hw_prof.flash.method = FLASH_METHOD_A; + break; + } + break; + case FLASH_MANUF_ID_MACRONIX: + switch (sec_prot) { + case FLASH_DEV_ID_MX29LV800BT: + asd_ha->hw_prof.flash.method = FLASH_METHOD_A; + break; + } + break; + } + + if (asd_ha->hw_prof.flash.method == FLASH_METHOD_UNKNOWN) { + err = asd_reset_flash(asd_ha); + if (err) { + ASD_DPRINTK("couldn't reset flash. err=%d\n", err); + return err; + } + + /* Issue Unlock sequence for AM29LV008BT */ + asd_write_reg_byte(asd_ha, (reg + 0x555), 0xAA); + asd_write_reg_byte(asd_ha, (reg + 0x2AA), 0x55); + asd_write_reg_byte(asd_ha, (reg + 0x555), 0x90); + manuf_id = asd_read_reg_byte(asd_ha, reg); + dev_id = asd_read_reg_byte(asd_ha, reg + inc); + sec_prot = asd_read_reg_byte(asd_ha, reg + inc + inc); + + ASD_DPRINTK("Flash MethodB manuf_id(0x%x) dev_id(0x%x) sec_prot" + "(0x%x)\n", manuf_id, dev_id, sec_prot); + + err = asd_reset_flash(asd_ha); + if (err != 0) { + ASD_DPRINTK("couldn't reset flash. err=%d\n", err); + return err; + } + + switch (manuf_id) { + case FLASH_MANUF_ID_AMD: + switch (dev_id) { + case FLASH_DEV_ID_AM29LV008BT: + asd_ha->hw_prof.flash.method = FLASH_METHOD_B; + break; + default: + break; + } + break; + case FLASH_MANUF_ID_ST: + switch (dev_id) { + case FLASH_DEV_ID_STM29008: + asd_ha->hw_prof.flash.method = FLASH_METHOD_B; + break; + default: + break; + } + break; + case FLASH_MANUF_ID_FUJITSU: + switch (dev_id) { + case FLASH_DEV_ID_MBM29LV008TA: + asd_ha->hw_prof.flash.method = FLASH_METHOD_B; + break; + } + break; + case FLASH_MANUF_ID_INTEL: + switch (dev_id) { + case FLASH_DEV_ID_I28LV00TAT: + asd_ha->hw_prof.flash.method = FLASH_METHOD_B; + break; + } + break; + case FLASH_MANUF_ID_MACRONIX: + switch (dev_id) { + case FLASH_DEV_ID_I28LV00TAT: + asd_ha->hw_prof.flash.method = FLASH_METHOD_B; + break; + } + break; + default: + return FAIL_FIND_FLASH_ID; + } + } + + if (asd_ha->hw_prof.flash.method == FLASH_METHOD_UNKNOWN) + return FAIL_FIND_FLASH_ID; + + asd_ha->hw_prof.flash.manuf = manuf_id; + asd_ha->hw_prof.flash.dev_id = dev_id; + asd_ha->hw_prof.flash.sec_prot = sec_prot; + return 0; +} |