[MIPS] Ocelot 3: Fix MAC address detection after platform_device conversion.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

4 files changed, 237 insertions, 60 deletions

diff --git a/arch/mips/momentum/ocelot_3/Makefile b/arch/mips/momentum/ocelot_3/Makefile
index 8bcea64dd27b..d5a090a85a15 100644
--- a/arch/mips/momentum/ocelot_3/Makefile
+++ b/arch/mips/momentum/ocelot_3/Makefile
@@ -5,4 +5,4 @@
 # removes any old dependencies. DON'T put your own dependencies here
 # unless it's something special (ie not a .c file).
 #
-obj-y    += irq.o prom.o reset.o setup.o
+obj-y    += irq.o platform.o prom.o reset.o setup.o
diff --git a/arch/mips/momentum/ocelot_3/platform.c b/arch/mips/momentum/ocelot_3/platform.c
new file mode 100644
index 000000000000..eefe5841fbb2
--- /dev/null
+++ b/arch/mips/momentum/ocelot_3/platform.c
@@ -0,0 +1,235 @@
+#include <linux/delay.h>
+#include <linux/if_ether.h>
+#include <linux/ioport.h>
+#include <linux/mv643xx.h>
+#include <linux/platform_device.h>
+
+#include "ocelot_3_fpga.h"
+
+#if defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE)
+
+static struct resource mv643xx_eth_shared_resources[] = {
+        [0] = {
+                .name   = "ethernet shared base",
+                .start  = 0xf1000000 + MV643XX_ETH_SHARED_REGS,
+                .end    = 0xf1000000 + MV643XX_ETH_SHARED_REGS +
+                                       MV643XX_ETH_SHARED_REGS_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device mv643xx_eth_shared_device = {
+        .name           = MV643XX_ETH_SHARED_NAME,
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(mv643xx_eth_shared_resources),
+        .resource       = mv643xx_eth_shared_resources,
+};
+
+#define MV_SRAM_BASE                    0xfe000000UL
+#define MV_SRAM_SIZE                    (256 * 1024)
+
+#define MV_SRAM_RXRING_SIZE             (MV_SRAM_SIZE / 4)
+#define MV_SRAM_TXRING_SIZE             (MV_SRAM_SIZE / 4)
+
+#define MV_SRAM_BASE_ETH0               MV_SRAM_BASE
+#define MV_SRAM_BASE_ETH1               (MV_SRAM_BASE + (MV_SRAM_SIZE / 2))
+
+#define MV64x60_IRQ_ETH_0 48
+#define MV64x60_IRQ_ETH_1 49
+#define MV64x60_IRQ_ETH_2 50
+
+#ifdef CONFIG_MV643XX_ETH_0
+
+static struct resource mv64x60_eth0_resources[] = {
+        [0] = {
+                .name   = "eth0 irq",
+                .start  = MV64x60_IRQ_ETH_0,
+                .end    = MV64x60_IRQ_ETH_0,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static char eth0_mac_addr[ETH_ALEN];
+
+static struct mv643xx_eth_platform_data eth0_pd = {
+        .mac_addr       = eth0_mac_addr,
+
+        .tx_sram_addr   = MV_SRAM_BASE_ETH0,
+        .tx_sram_size   = MV_SRAM_TXRING_SIZE,
+        .tx_queue_size  = MV_SRAM_TXRING_SIZE / 16,
+
+        .rx_sram_addr   = MV_SRAM_BASE_ETH0 + MV_SRAM_TXRING_SIZE,
+        .rx_sram_size   = MV_SRAM_RXRING_SIZE,
+        .rx_queue_size  = MV_SRAM_RXRING_SIZE / 16,
+};
+
+static struct platform_device eth0_device = {
+        .name           = MV643XX_ETH_NAME,
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(mv64x60_eth0_resources),
+        .resource       = mv64x60_eth0_resources,
+        .dev = {
+                .platform_data = &eth0_pd,
+        },
+};
+#endif /* CONFIG_MV643XX_ETH_0 */
+
+#ifdef CONFIG_MV643XX_ETH_1
+
+static struct resource mv64x60_eth1_resources[] = {
+        [0] = {
+                .name   = "eth1 irq",
+                .start  = MV64x60_IRQ_ETH_1,
+                .end    = MV64x60_IRQ_ETH_1,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static char eth1_mac_addr[ETH_ALEN];
+
+static struct mv643xx_eth_platform_data eth1_pd = {
+        .mac_addr       = eth1_mac_addr,
+
+        .tx_sram_addr   = MV_SRAM_BASE_ETH1,
+        .tx_sram_size   = MV_SRAM_TXRING_SIZE,
+        .tx_queue_size  = MV_SRAM_TXRING_SIZE / 16,
+
+        .rx_sram_addr   = MV_SRAM_BASE_ETH1 + MV_SRAM_TXRING_SIZE,
+        .rx_sram_size   = MV_SRAM_RXRING_SIZE,
+        .rx_queue_size  = MV_SRAM_RXRING_SIZE / 16,
+};
+
+static struct platform_device eth1_device = {
+        .name           = MV643XX_ETH_NAME,
+        .id             = 1,
+        .num_resources  = ARRAY_SIZE(mv64x60_eth1_resources),
+        .resource       = mv64x60_eth1_resources,
+        .dev = {
+                .platform_data = &eth1_pd,
+        },
+};
+#endif /* CONFIG_MV643XX_ETH_1 */
+
+#ifdef CONFIG_MV643XX_ETH_2
+
+static struct resource mv64x60_eth2_resources[] = {
+        [0] = {
+                .name   = "eth2 irq",
+                .start  = MV64x60_IRQ_ETH_2,
+                .end    = MV64x60_IRQ_ETH_2,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static char eth2_mac_addr[ETH_ALEN];
+
+static struct mv643xx_eth_platform_data eth2_pd = {
+        .mac_addr       = eth2_mac_addr,
+};
+
+static struct platform_device eth2_device = {
+        .name           = MV643XX_ETH_NAME,
+        .id             = 1,
+        .num_resources  = ARRAY_SIZE(mv64x60_eth2_resources),
+        .resource       = mv64x60_eth2_resources,
+        .dev = {
+                .platform_data = &eth2_pd,
+        },
+};
+#endif /* CONFIG_MV643XX_ETH_2 */
+
+static struct platform_device *mv643xx_eth_pd_devs[] __initdata = {
+        &mv643xx_eth_shared_device,
+#ifdef CONFIG_MV643XX_ETH_0
+        &eth0_device,
+#endif
+#ifdef CONFIG_MV643XX_ETH_1
+        &eth1_device,
+#endif
+#ifdef CONFIG_MV643XX_ETH_2
+        &eth2_device,
+#endif
+};
+
+static u8 __init exchange_bit(u8 val, u8 cs)
+{
+        /* place the data */
+        OCELOT_FPGA_WRITE((val << 2) | cs, EEPROM_MODE);
+        udelay(1);
+
+        /* turn the clock on */
+        OCELOT_FPGA_WRITE((val << 2) | cs | 0x2, EEPROM_MODE);
+        udelay(1);
+
+        /* turn the clock off and read-strobe */
+        OCELOT_FPGA_WRITE((val << 2) | cs | 0x10, EEPROM_MODE);
+
+        /* return the data */
+        return (OCELOT_FPGA_READ(EEPROM_MODE) >> 3) & 0x1;
+}
+
+static void __init get_mac(char dest[6])
+{
+        u8 read_opcode[12] = {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        int i,j;
+
+        for (i = 0; i < 12; i++)
+                exchange_bit(read_opcode[i], 1);
+
+        for (j = 0; j < 6; j++) {
+                dest[j] = 0;
+                for (i = 0; i < 8; i++) {
+                        dest[j] <<= 1;
+                        dest[j] |= exchange_bit(0, 1);
+                }
+        }
+
+        /* turn off CS */
+        exchange_bit(0,0);
+}
+
+/*
+ * Copy and increment ethernet MAC address by a small value.
+ *
+ * This is useful for systems where the only one MAC address is stored in
+ * non-volatile memory for multiple ports.
+ */
+static inline void eth_mac_add(unsigned char *dst, unsigned char *src,
+        unsigned int add)
+{
+        int i;
+
+        BUG_ON(add >= 256);
+
+        for (i = ETH_ALEN; i >= 0; i--) {
+                dst[i] = src[i] + add;
+                add = dst[i] < src[i];          /* compute carry */
+        }
+
+        WARN_ON(add);
+}
+
+static int __init mv643xx_eth_add_pds(void)
+{
+        unsigned char mac[ETH_ALEN];
+        int ret;
+
+        get_mac(mac);
+#ifdef CONFIG_MV643XX_ETH_0
+        eth_mac_add(eth1_mac_addr, mac, 0);
+#endif
+#ifdef CONFIG_MV643XX_ETH_1
+        eth_mac_add(eth1_mac_addr, mac, 1);
+#endif
+#ifdef CONFIG_MV643XX_ETH_2
+        eth_mac_add(eth2_mac_addr, mac, 2);
+#endif
+        ret = platform_add_devices(mv643xx_eth_pd_devs,
+                        ARRAY_SIZE(mv643xx_eth_pd_devs));
+
+        return ret;
+}
+
+device_initcall(mv643xx_eth_add_pds);
+
+#endif /* defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE) */
diff --git a/arch/mips/momentum/ocelot_3/prom.c b/arch/mips/momentum/ocelot_3/prom.c
index 296d945bc248..6ce9b7fdb824 100644
--- a/arch/mips/momentum/ocelot_3/prom.c
+++ b/arch/mips/momentum/ocelot_3/prom.c
@@ -34,64 +34,11 @@ struct callvectors* debug_vectors;
 extern unsigned long marvell_base;
 extern unsigned long cpu_clock;
 
-#ifdef CONFIG_MV643XX_ETH
-extern unsigned char prom_mac_addr_base[6];
-#endif
-
 const char *get_system_type(void)
 {
         return "Momentum Ocelot-3";
 }
 
-#ifdef CONFIG_MV643XX_ETH
-void burn_clocks(void)
-{
-        int i;
-
-        /* this loop should burn at least 1us -- this should be plenty */
-        for (i = 0; i < 0x10000; i++)
-                ;
-}
-
-u8 exchange_bit(u8 val, u8 cs)
-{
-        /* place the data */
-        OCELOT_FPGA_WRITE((val << 2) | cs, EEPROM_MODE);
-        burn_clocks();
-
-        /* turn the clock on */
-        OCELOT_FPGA_WRITE((val << 2) | cs | 0x2, EEPROM_MODE);
-        burn_clocks();
-
-        /* turn the clock off and read-strobe */
-        OCELOT_FPGA_WRITE((val << 2) | cs | 0x10, EEPROM_MODE);
-
-        /* return the data */
-        return ((OCELOT_FPGA_READ(EEPROM_MODE) >> 3) & 0x1);
-}
-
-void get_mac(char dest[6])
-{
-        u8 read_opcode[12] = {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-        int i,j;
-
-        for (i = 0; i < 12; i++)
-                exchange_bit(read_opcode[i], 1);
-
-        for (j = 0; j < 6; j++) {
-                dest[j] = 0;
-                for (i = 0; i < 8; i++) {
-                        dest[j] <<= 1;
-                        dest[j] |= exchange_bit(0, 1);
-                }
-        }
-
-        /* turn off CS */
-        exchange_bit(0,0);
-}
-#endif
-
-
 #ifdef CONFIG_64BIT
 
 unsigned long signext(unsigned long addr)
@@ -228,11 +175,6 @@ void __init prom_init(void)
         mips_machgroup = MACH_GROUP_MOMENCO;
         mips_machtype = MACH_MOMENCO_OCELOT_3;
 
-#ifdef CONFIG_MV643XX_ETH
-        /* get the base MAC address for on-board ethernet ports */
-        get_mac(prom_mac_addr_base);
-#endif
-
 #ifndef CONFIG_64BIT
         debug_vectors->printf("Booting Linux kernel...\n");
 #endif
diff --git a/arch/mips/momentum/ocelot_3/setup.c b/arch/mips/momentum/ocelot_3/setup.c
index 7d74f8c54129..ff0829f81116 100644
--- a/arch/mips/momentum/ocelot_3/setup.c
+++ b/arch/mips/momentum/ocelot_3/setup.c
@@ -4,7 +4,7 @@
  * BRIEF MODULE DESCRIPTION
  * Momentum Computer Ocelot-3 board dependent boot routines
  *
- * Copyright (C) 1996, 1997, 01, 05  Ralf Baechle
+ * Copyright (C) 1996, 1997, 01, 05 - 06  Ralf Baechle
  * Copyright (C) 2000 RidgeRun, Inc.
  * Copyright (C) 2001 Red Hat, Inc.
  * Copyright (C) 2002 Momentum Computer