tg3: Add Macronix NVRAM support

This patch adds the support for Macronix NVRAM

Signed-off-by: Prashant Sreedharan <prashant.sreedharan@broadcom.com>
Signed-off-by: Satish Baddipadige <satish.baddipadige@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/tg3.c

@@ -3227,7 +3227,7 @@ static int tg3_nvram_read_using_eeprom(struct tg3 *tp,
 	return 0;
 }
 
-#define NVRAM_CMD_TIMEOUT 5000
+#define NVRAM_CMD_TIMEOUT 10000
 
 static int tg3_nvram_exec_cmd(struct tg3 *tp, u32 nvram_cmd)
 {
@@ -14789,7 +14789,7 @@ static void tg3_get_5717_nvram_info(struct tg3 *tp)
 
 static void tg3_get_5720_nvram_info(struct tg3 *tp)
 {
-	u32 nvcfg1, nvmpinstrp;
+	u32 nvcfg1, nvmpinstrp, nv_status;
 
 	nvcfg1 = tr32(NVRAM_CFG1);
 	nvmpinstrp = nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK;
@@ -14801,6 +14801,23 @@ static void tg3_get_5720_nvram_info(struct tg3 *tp)
 		}
 
 		switch (nvmpinstrp) {
+		case FLASH_5762_MX25L_100:
+		case FLASH_5762_MX25L_200:
+		case FLASH_5762_MX25L_400:
+		case FLASH_5762_MX25L_800:
+		case FLASH_5762_MX25L_160_320:
+			tp->nvram_pagesize = 4096;
+			tp->nvram_jedecnum = JEDEC_MACRONIX;
+			tg3_flag_set(tp, NVRAM_BUFFERED);
+			tg3_flag_set(tp, NO_NVRAM_ADDR_TRANS);
+			tg3_flag_set(tp, FLASH);
+			nv_status = tr32(NVRAM_AUTOSENSE_STATUS);
+			tp->nvram_size =
+				(1 << (nv_status >> AUTOSENSE_DEVID &
+						AUTOSENSE_DEVID_MASK)
+					<< AUTOSENSE_SIZE_IN_MB);
+			return;
+
 		case FLASH_5762_EEPROM_HD:
 			nvmpinstrp = FLASH_5720_EEPROM_HD;
 			break;

drivers/net/ethernet/broadcom/tg3.h

@@ -1863,7 +1863,7 @@
 #define NVRAM_STAT			0x00007004
 #define NVRAM_WRDATA			0x00007008
 #define NVRAM_ADDR			0x0000700c
-#define  NVRAM_ADDR_MSK			0x00ffffff
+#define  NVRAM_ADDR_MSK			0x07ffffff
 #define NVRAM_RDDATA			0x00007010
 #define NVRAM_CFG1			0x00007014
 #define  NVRAM_CFG1_FLASHIF_ENAB	 0x00000001
@@ -1945,6 +1945,11 @@
 #define  FLASH_5720_EEPROM_LD		 0x00000003
 #define  FLASH_5762_EEPROM_HD		 0x02000001
 #define  FLASH_5762_EEPROM_LD		 0x02000003
+#define  FLASH_5762_MX25L_100           0x00800000
+#define  FLASH_5762_MX25L_200           0x00800002
+#define  FLASH_5762_MX25L_400           0x00800001
+#define  FLASH_5762_MX25L_800           0x00800003
+#define  FLASH_5762_MX25L_160_320       0x03800002
 #define  FLASH_5720VENDOR_M_ATMEL_DB011D 0x01000000
 #define  FLASH_5720VENDOR_M_ATMEL_DB021D 0x01000002
 #define  FLASH_5720VENDOR_M_ATMEL_DB041D 0x01000001
@@ -2009,7 +2014,11 @@
 /* 0x702c unused */
 
 #define NVRAM_ADDR_LOCKOUT		0x00007030
-/* 0x7034 --> 0x7500 unused */
+#define NVRAM_AUTOSENSE_STATUS         0x00007038
+#define AUTOSENSE_DEVID                        0x00000010
+#define AUTOSENSE_DEVID_MASK           0x00000007
+#define AUTOSENSE_SIZE_IN_MB           17
+/* 0x703c --> 0x7500 unused */
 
 #define OTP_MODE			0x00007500
 #define OTP_MODE_OTP_THRU_GRC		 0x00000001
@@ -3378,6 +3387,7 @@ struct tg3 {
 #define JEDEC_ST			0x20
 #define JEDEC_SAIFUN			0x4f
 #define JEDEC_SST			0xbf
+#define JEDEC_MACRONIX                 0xc2
 
 #define ATMEL_AT24C02_CHIP_SIZE		TG3_NVRAM_SIZE_2KB
 #define ATMEL_AT24C02_PAGE_SIZE		(8)