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Message-Id: <1346452619-2129-8-git-send-email-sony.chacko@qlogic.com>
Date: Fri, 31 Aug 2012 18:36:54 -0400
From: Sony Chacko <sony.chacko@...gic.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, Dept_NX_Linux_NIC_Driver@...gic.com,
Sony Chacko <sony.chacko@...gic.com>
Subject: [PATCH 07/12] qlcnic: 83xx adpater flash interface routines
From: Sony Chacko <sony.chacko@...gic.com>
Flash interface routines for 83xx adapter
Signed-off-by: Himanshu Madhani <himanshu.madhani@...gic.com>
Signed-off-by: Sony Chacko <sony.chacko@...gic.com>
---
drivers/net/ethernet/qlogic/qlcnic/qlcnic.h | 31 ++
.../net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c | 434 ++++++++++++++++++++
2 files changed, 465 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index c51bbcf..70616af 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -307,6 +307,7 @@ struct uni_data_desc{
/* Flash Defines and Structures */
#define QLCNIC_FLT_LOCATION 0x3F1000
+#define QLCNIC_FDT_LOCATION 0x3F0000
#define QLCNIC_B0_FW_IMAGE_REGION 0x74
#define QLCNIC_C0_FW_IMAGE_REGION 0x97
#define QLCNIC_BOOTLD_REGION 0X72
@@ -327,6 +328,35 @@ struct qlcnic_flt_entry {
u32 end_addr;
};
+struct qlcnic_flash_desc_table {
+ u32 flash_valid;
+ u16 flash_ver;
+ u16 flash_len;
+ u16 flash_cksum;
+ u16 flash_unused;
+ u8 flash_model[16];
+ u16 flash_manuf;
+ u16 flash_id;
+ u8 flash_flag;
+ u8 erase_cmd;
+ u8 alt_erase_cmd;
+ u8 write_enable_cmd;
+ u8 write_enable_bits;
+ u8 write_statusreg_cmd;
+ u8 unprotected_sec_cmd;
+ u8 read_manuf_cmd;
+ u32 block_size;
+ u32 alt_block_size;
+ u32 flash_size;
+ u32 write_enable_data;
+ u8 readid_addr_len;
+ u8 write_disable_bits;
+ u8 read_dev_id_len;
+ u8 chip_erase_cmd;
+ u16 read_timeo;
+ u8 protected_sec_cmd;
+ u8 resvd[65];
+};
/* Magic number to let user know flash is programmed */
#define QLCNIC_BDINFO_MAGIC 0x12345678
@@ -509,6 +539,7 @@ struct qlcnic_hardware_context {
struct qlcnic_hardware_ops *hw_ops;
struct qlcnic_nic_intr_coalesce coal;
struct qlcnic_fw_dump fw_dump;
+ struct qlcnic_flash_desc_table flash_fdt;
struct qlcnic_83xx_reset reset;
struct qlcnic_83xx_idc idc;
struct qlcnic_83xx_fw_info fw_info;
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
index cec86a5..37ca75f 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
@@ -2121,3 +2121,437 @@ out:
qlcnic_free_mbx_args(&cmd);
return err;
}
+
+int
+qlcnic_83xx_lock_flash(struct qlcnic_adapter *adapter)
+{
+ int id, timeout = 0;
+ u32 status = 0;
+
+ while (status == 0) {
+ status = QLCRD(adapter, QLCNIC_FLASH_LOCK);
+ if (status)
+ break;
+
+ if (++timeout >= QLC_83XX_FLASH_LOCK_TIMEOUT) {
+ id = QLCRD(adapter, QLCNIC_FLASH_LOCK_OWNER);
+ dev_err(&adapter->pdev->dev,
+ "%s: failed: lock held by %d\n", __func__, id);
+ return -EIO;
+ }
+ usleep_range(1000, 2000);
+ }
+
+ QLCWR(adapter, QLCNIC_FLASH_LOCK_OWNER, adapter->portnum);
+ return 0;
+}
+
+void
+qlcnic_83xx_unlock_flash(struct qlcnic_adapter *adapter)
+{
+ QLCRD(adapter, QLCNIC_FLASH_UNLOCK);
+ QLCWR(adapter, QLCNIC_FLASH_LOCK_OWNER, 0xFF);
+}
+
+int
+qlcnic_83xx_flash_read32(struct qlcnic_adapter *adapter, u32 flash_addr,
+ u8 *p_data, int count)
+{
+ int i, err;
+ u32 word;
+ u32 addr = flash_addr;
+
+ if (qlcnic_83xx_lock_flash(adapter) != 0)
+ return -EIO;
+
+ if (addr & 0x3) {
+ dev_err(&adapter->pdev->dev, "Illegal addr = 0x%x\n", addr);
+ qlcnic_83xx_unlock_flash(adapter);
+ return -EIO;
+ }
+
+ for (i = 0; i < count; i++) {
+ if (qlcnic_83xx_wrt_reg_indirect(adapter,
+ QLC_83XX_FLASH_DIRECT_WINDOW, (addr))) {
+ qlcnic_83xx_unlock_flash(adapter);
+ return -EIO;
+ }
+
+ word = qlcnic_83xx_rd_reg_indirect(adapter,
+ QLC_83XX_FLASH_DIRECT_DATA(addr), &err);
+ *(__le32 *)p_data = le32_to_cpu(word);
+ p_data = p_data + 4;
+ addr = addr + 4;
+ }
+
+ qlcnic_83xx_unlock_flash(adapter);
+
+ return 0;
+}
+
+int
+qlcnic_83xx_lockless_flash_read32(struct qlcnic_adapter *adapter,
+ u32 flash_addr, u8 *p_data, int count)
+{
+ int err;
+ u32 i, word, flash_offset;
+ u32 addr = flash_addr;
+
+ flash_offset = addr & (QLCNIC_FLASH_SECTOR_SIZE - 1);
+
+ if (addr & 0x3) {
+ dev_err(&adapter->pdev->dev, "Illegal addr = 0x%x\n", addr);
+ return -EIO;
+ }
+
+ qlcnic_83xx_wrt_reg_indirect(adapter,
+ QLC_83XX_FLASH_DIRECT_WINDOW, (addr));
+
+ /* Check if data is spread across multiple sectors */
+ if ((flash_offset + (count * sizeof(u32))) >
+ (QLCNIC_FLASH_SECTOR_SIZE - 1)) {
+
+ /* Multi sector read */
+ for (i = 0; i < count; i++) {
+ word = qlcnic_83xx_rd_reg_indirect(adapter,
+ QLC_83XX_FLASH_DIRECT_DATA(addr), &err);
+
+ *(__le32 *)p_data = le32_to_cpu(word);
+ p_data = p_data + 4;
+ addr = addr + 4;
+ flash_offset = flash_offset + 4;
+
+ if (flash_offset > (QLCNIC_FLASH_SECTOR_SIZE - 1)) {
+ /* This write is needed once for each sector */
+ qlcnic_83xx_wrt_reg_indirect(adapter,
+ QLC_83XX_FLASH_DIRECT_WINDOW, (addr));
+ flash_offset = 0;
+ }
+ }
+ } else {
+ /* Single sector read */
+ for (i = 0; i < count; i++) {
+ word = qlcnic_83xx_rd_reg_indirect(adapter,
+ QLC_83XX_FLASH_DIRECT_DATA(addr), &err);
+ *(__le32 *)p_data = cpu_to_le32(word);
+ p_data = p_data + 4;
+ addr = addr + 4;
+ }
+ }
+
+ return 0;
+}
+
+static int
+qlcnic_83xx_poll_flash_status_reg(struct qlcnic_adapter *adapter)
+{
+ u32 status;
+ int err, retries = QLC_83XX_FLASH_READ_RETRY_COUNT;
+
+ do {
+ status = qlcnic_83xx_rd_reg_indirect(adapter,
+ QLC_83XX_FLASH_STATUS, &err);
+ if ((status & QLC_83XX_FLASH_STATUS_READY) ==
+ QLC_83XX_FLASH_STATUS_READY)
+ break;
+
+ msleep(QLC_83XX_FLASH_STATUS_REG_POLL_DELAY);
+ } while (--retries);
+
+ if (!retries)
+ return -EIO;
+
+ return 0;
+}
+
+static int
+qlcnic_83xx_enable_flash_write_op(struct qlcnic_adapter *adapter)
+{
+ int ret;
+
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ (QLC_83XX_FLASH_FDT_WRITE_DEF_SIG |
+ adapter->ahw->flash_fdt.write_statusreg_cmd));
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_WRDATA,
+ adapter->ahw->flash_fdt.write_enable_bits);
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_SECOND_ERASE_MS_VAL);
+
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret)
+ return -EIO;
+
+ return 0;
+}
+
+static int
+qlcnic_83xx_disable_flash_write_op(struct qlcnic_adapter *adapter)
+{
+ int ret;
+
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ (QLC_83XX_FLASH_FDT_WRITE_DEF_SIG |
+ adapter->ahw->flash_fdt.write_statusreg_cmd));
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_WRDATA,
+ adapter->ahw->flash_fdt.write_enable_bits);
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_SECOND_ERASE_MS_VAL);
+
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret)
+ return -EIO;
+
+ return 0;
+}
+
+int
+qlcnic_83xx_read_flash_mfg_id(struct qlcnic_adapter *adapter)
+{
+ int ret, mfg_id;
+
+ if (qlcnic_83xx_lock_flash(adapter))
+ return -EIO;
+
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ QLC_83XX_FLASH_FDT_READ_MFG_ID_VAL);
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_READ_CONTROL_VAL);
+
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret) {
+ qlcnic_83xx_unlock_flash(adapter);
+ return -EIO;
+ }
+
+ mfg_id = qlcnic_83xx_rd_reg_indirect(adapter,
+ QLC_83XX_FLASH_RDDATA, &ret);
+
+ adapter->flash_mfg_id = (mfg_id & 0xFF);
+ qlcnic_83xx_unlock_flash(adapter);
+
+ return 0;
+}
+
+int
+qlcnic_83xx_read_flash_descriptor_table(struct qlcnic_adapter *adapter)
+{
+ int count, fdt_size, ret = 0;
+
+ fdt_size = sizeof(struct qlcnic_flash_desc_table);
+ count = fdt_size/sizeof(u32);
+
+ if (qlcnic_83xx_lock_flash(adapter))
+ return -EIO;
+
+ memset(&adapter->ahw->flash_fdt, 0, fdt_size);
+ ret = qlcnic_83xx_lockless_flash_read32(adapter,
+ QLCNIC_FDT_LOCATION,
+ (u8 *)&adapter->ahw->flash_fdt,
+ count);
+
+ qlcnic_83xx_unlock_flash(adapter);
+ return ret;
+}
+
+int
+qlcnic_83xx_erase_flash_sector(struct qlcnic_adapter *adapter,
+ u32 sector_start_addr)
+{
+ u32 reversed_addr;
+ int ret = -EIO;
+
+ if (qlcnic_83xx_lock_flash(adapter) != 0)
+ return -EIO;
+
+ if (adapter->ahw->flash_fdt.flash_manuf == adapter->flash_mfg_id) {
+ ret = qlcnic_83xx_enable_flash_write_op(adapter);
+ if (ret) {
+ qlcnic_83xx_unlock_flash(adapter);
+ dev_err(&adapter->pdev->dev,
+ "%s failed at %d\n",
+ __func__, __LINE__);
+ return ret;
+ }
+ }
+
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret) {
+ qlcnic_83xx_unlock_flash(adapter);
+ dev_err(&adapter->pdev->dev,
+ " %s: failed at %d\n", __func__, __LINE__);
+ return -EIO;
+ }
+
+ reversed_addr = (((sector_start_addr & 0xFF) << 16) |
+ ((sector_start_addr & 0xFF0000) >> 16));
+
+ qlcnic_83xx_wrt_reg_indirect(adapter,
+ QLC_83XX_FLASH_WRDATA, reversed_addr);
+
+ if (adapter->ahw->flash_fdt.flash_manuf == adapter->flash_mfg_id)
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ (QLC_83XX_FLASH_FDT_ERASE_DEF_SIG |
+ adapter->ahw->flash_fdt.erase_cmd));
+ else
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ QLC_83XX_FLASH_OEM_ERASE_SIG);
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_LAST_ERASE_MS_VAL);
+
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret) {
+ qlcnic_83xx_unlock_flash(adapter);
+ dev_err(&adapter->pdev->dev,
+ " %s: failed at %d\n", __func__, __LINE__);
+ return -EIO;
+ }
+
+ if (adapter->ahw->flash_fdt.flash_manuf == adapter->flash_mfg_id) {
+ ret = qlcnic_83xx_disable_flash_write_op(adapter);
+ if (ret) {
+ qlcnic_83xx_unlock_flash(adapter);
+ dev_err(&adapter->pdev->dev,
+ " %s: failed at %d\n", __func__, __LINE__);
+ return ret;
+ }
+ }
+
+ qlcnic_83xx_unlock_flash(adapter);
+
+ return 0;
+}
+
+int
+qlcnic_83xx_flash_write32(struct qlcnic_adapter *adapter, u32 addr,
+ u32 *p_data)
+{
+ int ret = -EIO;
+
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ 0x00800000 | (addr >> 2));
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_WRDATA, *p_data);
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_LAST_ERASE_MS_VAL);
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret) {
+ dev_err(&adapter->pdev->dev,
+ " %s: failed at %d\n", __func__, __LINE__);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+int
+qlcnic_83xx_flash_bulk_write(struct qlcnic_adapter *adapter, u32 addr,
+ u32 *p_data, int count)
+{
+ u32 temp;
+ int ret = -EIO, err;
+
+ if ((count < QLC_83XX_FLASH_BULK_WRITE_MIN) ||
+ (count > QLC_83XX_FLASH_BULK_WRITE_MAX)) {
+ dev_err(&adapter->pdev->dev,
+ " %s: Invalid word count\n", __func__);
+ return -EIO;
+ }
+
+ temp = qlcnic_83xx_rd_reg_indirect(adapter,
+ QLC_83XX_FLASH_SPI_CONTROL, &err);
+ qlcnic_83xx_wrt_reg_indirect(adapter,
+ QLC_83XX_FLASH_SPI_CONTROL,
+ (temp | QLC_83XX_FLASH_SPI_CONTROL_VAL));
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ QLC_83XX_FLASH_ADDR_TEMP_VAL);
+
+ /* First DWORD write */
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_WRDATA, *p_data++);
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_FIRST_WRITE_MS_PATTERN);
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret) {
+ dev_err(&adapter->pdev->dev,
+ " %s: failed at %d\n", __func__, __LINE__);
+ return -EIO;
+ }
+
+ count--;
+
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ QLC_83XX_FLASH_ADDR_SECOND_TEMP_VAL);
+
+ /* Second to N-1 DWORD writes */
+ while (count != 1) {
+ qlcnic_83xx_wrt_reg_indirect(adapter,
+ QLC_83XX_FLASH_WRDATA, *p_data++);
+ qlcnic_83xx_wrt_reg_indirect(adapter,
+ QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_SECOND_WRITE_MS_PATTERN);
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret) {
+ dev_err(&adapter->pdev->dev,
+ " %s: failed at %d\n", __func__, __LINE__);
+ return -EIO;
+ }
+ count--;
+ }
+
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ QLC_83XX_FLASH_ADDR_TEMP_VAL | (addr >> 2));
+ /* Last DWORD write */
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_WRDATA, *p_data++);
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_LAST_WRITE_MS_PATTERN);
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret) {
+ dev_err(&adapter->pdev->dev,
+ " %s: failed at %d\n", __func__, __LINE__);
+ return -EIO;
+ }
+
+ ret = qlcnic_83xx_rd_reg_indirect(adapter,
+ QLC_83XX_FLASH_SPI_STATUS, &err);
+ if ((ret & QLC_83XX_FLASH_SPI_CONTROL_VAL) ==
+ QLC_83XX_FLASH_SPI_CONTROL_VAL) {
+ dev_err(&adapter->pdev->dev,
+ " %s: failed at %d\n", __func__, __LINE__);
+ /* Operation failed, clear error bit */
+ temp = qlcnic_83xx_rd_reg_indirect(adapter,
+ QLC_83XX_FLASH_SPI_CONTROL, &err);
+ qlcnic_83xx_wrt_reg_indirect(adapter,
+ QLC_83XX_FLASH_SPI_CONTROL,
+ (temp | QLC_83XX_FLASH_SPI_CONTROL_VAL));
+ }
+
+ return 0;
+}
+
+static int
+qlcnic_83xx_read_flash_status_reg(struct qlcnic_adapter *adapter)
+{
+ int ret, err;
+
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_ADDR,
+ QLC_83XX_FLASH_OEM_READ_SIG);
+ qlcnic_83xx_wrt_reg_indirect(adapter, QLC_83XX_FLASH_CONTROL,
+ QLC_83XX_FLASH_READ_CONTROL_VAL);
+ ret = qlcnic_83xx_poll_flash_status_reg(adapter);
+ if (ret)
+ return -EIO;
+
+ ret = qlcnic_83xx_rd_reg_indirect(adapter, QLC_83XX_FLASH_RDDATA, &err);
+ return ret&0xFF;
+}
+
+int qlcnic_83xx_flash_test(struct qlcnic_adapter *adapter)
+{
+ int status;
+
+ status = qlcnic_83xx_read_flash_status_reg(adapter);
+ if (status == -EIO) {
+ dev_info(&adapter->pdev->dev, "%s: EEPROM test failed.\n",
+ __func__);
+ return 1;
+ }
+ return 0;
+}
--
1.7.1
--
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