NetXen: Added ethtool support for user level tools.

NetXen: Added ethtool support for user level firmware management utilities.

Signed-off-by: Amit S. Kale <amitkale@netxen.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

3 files changed, 361 insertions, 19 deletions

diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index e8598b809228..3f3896e98879 100644
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -63,11 +63,14 @@
 
 #include "netxen_nic_hw.h"
 
-#define NETXEN_NIC_BUILD_NO     "2"
 #define _NETXEN_NIC_LINUX_MAJOR 3
 #define _NETXEN_NIC_LINUX_MINOR 3
 #define _NETXEN_NIC_LINUX_SUBVERSION 3
-#define NETXEN_NIC_LINUX_VERSIONID  "3.3.3" "-" NETXEN_NIC_BUILD_NO
+#define NETXEN_NIC_LINUX_VERSIONID  "3.3.3"
+
+#define NUM_FLASH_SECTORS (64)
+#define FLASH_SECTOR_SIZE (64 * 1024)
+#define FLASH_TOTAL_SIZE  (NUM_FLASH_SECTORS * FLASH_SECTOR_SIZE)
 
 #define RCV_DESC_RINGSIZE       \
         (sizeof(struct rcv_desc) * adapter->max_rx_desc_count)
@@ -85,6 +88,7 @@
 #define NETXEN_RCV_PRODUCER_OFFSET      0
 #define NETXEN_RCV_PEG_DB_ID            2
 #define NETXEN_HOST_DUMMY_DMA_SIZE 1024
+#define FLASH_SUCCESS 0
 
 #define ADDR_IN_WINDOW1(off)    \
         ((off > NETXEN_CRB_PCIX_HOST2) && (off < NETXEN_CRB_MAX)) ? 1 : 0
@@ -1028,6 +1032,15 @@ void netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val);
 void netxen_load_firmware(struct netxen_adapter *adapter);
 int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose);
 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp);
+int netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr, 
+                                u8 *bytes, size_t size);
+int netxen_rom_fast_write_words(struct netxen_adapter *adapter, int addr, 
+                                u8 *bytes, size_t size);
+int netxen_flash_unlock(struct netxen_adapter *adapter);
+int netxen_backup_crbinit(struct netxen_adapter *adapter);
+int netxen_flash_erase_secondary(struct netxen_adapter *adapter);
+int netxen_flash_erase_primary(struct netxen_adapter *adapter);
+
 int netxen_rom_fast_write(struct netxen_adapter *adapter, int addr, int data);
 int netxen_rom_se(struct netxen_adapter *adapter, int addr);
 int netxen_do_rom_se(struct netxen_adapter *adapter, int addr);
diff --git a/drivers/net/netxen/netxen_nic_ethtool.c b/drivers/net/netxen/netxen_nic_ethtool.c
index c381d77a7336..cc0efe213e01 100644
--- a/drivers/net/netxen/netxen_nic_ethtool.c
+++ b/drivers/net/netxen/netxen_nic_ethtool.c
@@ -32,6 +32,7 @@
  */
 
 #include <linux/types.h>
+#include <linux/delay.h>
 #include <asm/uaccess.h>
 #include <linux/pci.h>
 #include <asm/io.h>
@@ -94,17 +95,7 @@ static const char netxen_nic_gstrings_test[][ETH_GSTRING_LEN] = {
 
 static int netxen_nic_get_eeprom_len(struct net_device *dev)
 {
-        struct netxen_port *port = netdev_priv(dev);
-        struct netxen_adapter *adapter = port->adapter;
-        int n;
-
-        if ((netxen_rom_fast_read(adapter, 0, &n) == 0)
-            && (n & NETXEN_ROM_ROUNDUP)) {
-                n &= ~NETXEN_ROM_ROUNDUP;
-                if (n < NETXEN_MAX_EEPROM_LEN)
-                        return n;
-        }
-        return 0;
+        return FLASH_TOTAL_SIZE;
 }
 
 static void
@@ -440,18 +431,92 @@ netxen_nic_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
         struct netxen_port *port = netdev_priv(dev);
         struct netxen_adapter *adapter = port->adapter;
         int offset;
+        int ret;
 
         if (eeprom->len == 0)
                 return -EINVAL;
 
         eeprom->magic = (port->pdev)->vendor | ((port->pdev)->device << 16);
-        for (offset = 0; offset < eeprom->len; offset++)
-                if (netxen_rom_fast_read
-                    (adapter, (8 * offset) + 8, (int *)eeprom->data) == -1)
-                        return -EIO;
+        offset = eeprom->offset;
+
+        ret = netxen_rom_fast_read_words(adapter, offset, bytes, 
+                                                eeprom->len);
+        if (ret < 0)
+                return ret;
+
         return 0;
 }
 
+static int
+netxen_nic_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
+                        u8 * bytes)
+{
+        struct netxen_port *port = netdev_priv(dev);
+        struct netxen_adapter *adapter = port->adapter;
+        int offset = eeprom->offset;
+        static int flash_start;
+        static int ready_to_flash;
+        int ret;
+
+        if (flash_start == 0) {
+                ret = netxen_flash_unlock(adapter);
+                if (ret < 0) {
+                        printk(KERN_ERR "%s: Flash unlock failed.\n",
+                                netxen_nic_driver_name);
+                        return ret;
+                }
+                printk(KERN_INFO "%s: flash unlocked. \n", 
+                        netxen_nic_driver_name);
+                ret = netxen_flash_erase_secondary(adapter);
+                if (ret != FLASH_SUCCESS) {
+                        printk(KERN_ERR "%s: Flash erase failed.\n", 
+                                netxen_nic_driver_name);
+                        return ret;
+                }
+                printk(KERN_INFO "%s: secondary flash erased successfully.\n", 
+                        netxen_nic_driver_name);
+                flash_start = 1;
+                return 0;
+        }
+
+        if (offset == BOOTLD_START) {
+                ret = netxen_flash_erase_primary(adapter);
+                if (ret != FLASH_SUCCESS) {
+                        printk(KERN_ERR "%s: Flash erase failed.\n", 
+                                netxen_nic_driver_name);
+                        return ret;
+                }
+
+                ret = netxen_rom_se(adapter, USER_START);
+                if (ret != FLASH_SUCCESS)
+                        return ret;
+                ret = netxen_rom_se(adapter, FIXED_START);
+                if (ret != FLASH_SUCCESS)
+                        return ret;
+
+                printk(KERN_INFO "%s: primary flash erased successfully\n", 
+                        netxen_nic_driver_name);
+
+                ret = netxen_backup_crbinit(adapter);
+                if (ret != FLASH_SUCCESS) {
+                        printk(KERN_ERR "%s: CRBinit backup failed.\n", 
+                                netxen_nic_driver_name);
+                        return ret;
+                }
+                printk(KERN_INFO "%s: CRBinit backup done.\n", 
+                        netxen_nic_driver_name);
+                ready_to_flash = 1;
+        }
+
+        if (!ready_to_flash) {
+                printk(KERN_ERR "%s: Invalid write sequence, returning...\n",
+                        netxen_nic_driver_name);
+                return -EINVAL;
+        }
+
+        return netxen_rom_fast_write_words(adapter, offset, bytes, eeprom->len);
+}
+
 static void
 netxen_nic_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
 {
@@ -721,6 +786,7 @@ struct ethtool_ops netxen_nic_ethtool_ops = {
         .get_link = netxen_nic_get_link,
         .get_eeprom_len = netxen_nic_get_eeprom_len,
         .get_eeprom = netxen_nic_get_eeprom,
+        .set_eeprom = netxen_nic_set_eeprom,
         .get_ringparam = netxen_nic_get_ringparam,
         .get_pauseparam = netxen_nic_get_pauseparam,
         .set_pauseparam = netxen_nic_set_pauseparam,
diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c
index 00d0524fef13..f7bb8c90537c 100644
--- a/drivers/net/netxen/netxen_nic_init.c
+++ b/drivers/net/netxen/netxen_nic_init.c
@@ -277,6 +277,7 @@ unsigned long netxen_decode_crb_addr(unsigned long addr)
 
 static long rom_max_timeout = 10000;
 static long rom_lock_timeout = 1000000;
+static long rom_write_timeout = 700;
 
 static inline int rom_lock(struct netxen_adapter *adapter)
 {
@@ -405,7 +406,7 @@ do_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 {
         netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
         netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
-        udelay(100);            /* prevent bursting on CRB */
+        udelay(70);             /* prevent bursting on CRB */
         netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
         netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
         if (netxen_wait_rom_done(adapter)) {
@@ -414,13 +415,46 @@ do_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
         }
         /* reset abyte_cnt and dummy_byte_cnt */
         netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
-        udelay(100);            /* prevent bursting on CRB */
+        udelay(70);             /* prevent bursting on CRB */
         netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 
         *valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA);
         return 0;
 }
 
+static inline int 
+do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
+                        u8 *bytes, size_t size)
+{
+        int addridx;
+        int ret = 0;
+
+        for (addridx = addr; addridx < (addr + size); addridx += 4) {
+                ret = do_rom_fast_read(adapter, addridx, (int *)bytes);
+                if (ret != 0)
+                        break;
+                bytes += 4;
+        }
+
+        return ret;
+}
+
+int
+netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr, 
+                                u8 *bytes, size_t size)
+{
+        int ret;
+
+        ret = rom_lock(adapter);
+        if (ret < 0)
+                return ret;
+
+        ret = do_rom_fast_read_words(adapter, addr, bytes, size);
+
+        netxen_rom_unlock(adapter);
+        return ret;
+}
+
 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 {
         int ret;
@@ -444,6 +478,152 @@ int netxen_rom_fast_write(struct netxen_adapter *adapter, int addr, int data)
         netxen_rom_unlock(adapter);
         return ret;
 }
+
+static inline int do_rom_fast_write_words(struct netxen_adapter *adapter, 
+                                                int addr, u8 *bytes, size_t size)
+{
+        int addridx = addr;
+        int ret = 0;
+
+        while (addridx < (addr + size)) {
+                int last_attempt = 0;
+                int timeout = 0;
+                int data;
+
+                data = *(u32*)bytes;
+
+                ret = do_rom_fast_write(adapter, addridx, data);
+                if (ret < 0)
+                        return ret;
+                        
+                while(1) {
+                        int data1;
+
+                        do_rom_fast_read(adapter, addridx, &data1);
+                        if (data1 == data)
+                                break;
+
+                        if (timeout++ >= rom_write_timeout) {
+                                if (last_attempt++ < 4) {
+                                        ret = do_rom_fast_write(adapter, 
+                                                                addridx, data);
+                                        if (ret < 0)
+                                                return ret;
+                                }
+                                else {
+                                        printk(KERN_INFO "Data write did not "
+                                           "succeed at address 0x%x\n", addridx);
+                                        break;
+                                }
+                        }
+                }
+
+                bytes += 4;
+                addridx += 4;
+        }
+
+        return ret;
+}
+
+int netxen_rom_fast_write_words(struct netxen_adapter *adapter, int addr, 
+                                        u8 *bytes, size_t size)
+{
+        int ret = 0;
+
+        ret = rom_lock(adapter);
+        if (ret < 0)
+                return ret;
+
+        ret = do_rom_fast_write_words(adapter, addr, bytes, size);
+        netxen_rom_unlock(adapter);
+
+        return ret;
+}
+
+int netxen_rom_wrsr(struct netxen_adapter *adapter, int data)
+{
+        int ret;
+
+        ret = netxen_rom_wren(adapter);
+        if (ret < 0)
+                return ret;
+
+        netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_ROM_WDATA, data);
+        netxen_crb_writelit_adapter(adapter, 
+                                        NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0x1);
+
+        ret = netxen_wait_rom_done(adapter);
+        if (ret < 0)
+                return ret;
+
+        return netxen_rom_wip_poll(adapter);
+}
+
+int netxen_rom_rdsr(struct netxen_adapter *adapter)
+{
+        int ret;
+
+        ret = rom_lock(adapter);
+        if (ret < 0)
+                return ret;
+
+        ret = netxen_do_rom_rdsr(adapter);
+        netxen_rom_unlock(adapter);
+        return ret;
+}
+
+int netxen_backup_crbinit(struct netxen_adapter *adapter)
+{
+        int ret = FLASH_SUCCESS;
+        int val;
+        char *buffer = kmalloc(FLASH_SECTOR_SIZE, GFP_KERNEL);
+
+        if (!buffer)
+                return -ENOMEM; 
+        /* unlock sector 63 */
+        val = netxen_rom_rdsr(adapter);
+        val = val & 0xe3;
+        ret = netxen_rom_wrsr(adapter, val);
+        if (ret != FLASH_SUCCESS)
+                goto out_kfree;
+
+        ret = netxen_rom_wip_poll(adapter);
+        if (ret != FLASH_SUCCESS)
+                goto out_kfree;
+
+        /* copy  sector 0 to sector 63 */
+        ret = netxen_rom_fast_read_words(adapter, CRBINIT_START, 
+                                                buffer, FLASH_SECTOR_SIZE);
+        if (ret != FLASH_SUCCESS)
+                goto out_kfree;
+
+        ret = netxen_rom_fast_write_words(adapter, FIXED_START, 
+                                                buffer, FLASH_SECTOR_SIZE);
+        if (ret != FLASH_SUCCESS)
+                goto out_kfree;
+
+        /* lock sector 63 */
+        val = netxen_rom_rdsr(adapter);
+        if (!(val & 0x8)) {
+                val |= (0x1 << 2);
+                /* lock sector 63 */
+                if (netxen_rom_wrsr(adapter, val) == 0) {
+                        ret = netxen_rom_wip_poll(adapter);
+                        if (ret != FLASH_SUCCESS)
+                                goto out_kfree;
+
+                        /* lock SR writes */
+                        ret = netxen_rom_wip_poll(adapter);
+                        if (ret != FLASH_SUCCESS)
+                                goto out_kfree;
+                }
+        }
+
+out_kfree:
+        kfree(buffer);
+        return ret;
+}
+
 int netxen_do_rom_se(struct netxen_adapter *adapter, int addr)
 {
         netxen_rom_wren(adapter);
@@ -458,6 +638,27 @@ int netxen_do_rom_se(struct netxen_adapter *adapter, int addr)
         return netxen_rom_wip_poll(adapter);
 }
 
+void check_erased_flash(struct netxen_adapter *adapter, int addr)
+{
+        int i;
+        int val;
+        int count = 0, erased_errors = 0;
+        int range;
+
+        range = (addr == USER_START) ? FIXED_START : addr + FLASH_SECTOR_SIZE;
+        
+        for (i = addr; i < range; i += 4) {
+                netxen_rom_fast_read(adapter, i, &val);
+                if (val != 0xffffffff)
+                        erased_errors++;
+                count++;
+        }
+
+        if (erased_errors)
+                printk(KERN_INFO "0x%x out of 0x%x words fail to be erased "
+                        "for sector address: %x\n", erased_errors, count, addr);
+}
+
 int netxen_rom_se(struct netxen_adapter *adapter, int addr)
 {
         int ret = 0;
@@ -466,6 +667,68 @@ int netxen_rom_se(struct netxen_adapter *adapter, int addr)
         }
         ret = netxen_do_rom_se(adapter, addr);
         netxen_rom_unlock(adapter);
+        msleep(30);
+        check_erased_flash(adapter, addr);
+
+        return ret;
+}
+
+int
+netxen_flash_erase_sections(struct netxen_adapter *adapter, int start, int end)
+{
+        int ret = FLASH_SUCCESS;
+        int i;
+
+        for (i = start; i < end; i++) {
+                ret = netxen_rom_se(adapter, i * FLASH_SECTOR_SIZE);
+                if (ret)
+                        break;
+                ret = netxen_rom_wip_poll(adapter);
+                if (ret < 0)
+                        return ret;
+        }
+
+        return ret;
+}
+
+int
+netxen_flash_erase_secondary(struct netxen_adapter *adapter)
+{
+        int ret = FLASH_SUCCESS;
+        int start, end;
+
+        start = SECONDARY_START / FLASH_SECTOR_SIZE;
+        end   = USER_START / FLASH_SECTOR_SIZE;
+        ret = netxen_flash_erase_sections(adapter, start, end);
+
+        return ret;
+}
+
+int
+netxen_flash_erase_primary(struct netxen_adapter *adapter)
+{
+        int ret = FLASH_SUCCESS;
+        int start, end;
+
+        start = PRIMARY_START / FLASH_SECTOR_SIZE;
+        end   = SECONDARY_START / FLASH_SECTOR_SIZE;
+        ret = netxen_flash_erase_sections(adapter, start, end);
+
+        return ret;
+}
+
+int netxen_flash_unlock(struct netxen_adapter *adapter)
+{
+        int ret = 0;
+
+        ret = netxen_rom_wrsr(adapter, 0);
+        if (ret < 0)
+                return ret;
+
+        ret = netxen_rom_wren(adapter);
+        if (ret < 0)
+                return ret;
+
         return ret;
 }