pegasos_eth.c
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/*
* Copyright (C) 2005 Sven Luther <sl@bplan-gmbh.de>
* Thanks to :
* Dale Farnsworth <dale@farnsworth.org>
* Mark A. Greer <mgreer@mvista.com>
* Nicolas DET <nd@bplan-gmbh.de>
* Benjamin Herrenschmidt <benh@kernel.crashing.org>
* And anyone else who helped me on this.
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/mv643xx.h>
#include <linux/pci.h>
#define PEGASOS2_MARVELL_REGBASE (0xf1000000)
#define PEGASOS2_MARVELL_REGSIZE (0x00004000)
#define PEGASOS2_SRAM_BASE (0xf2000000)
#define PEGASOS2_SRAM_SIZE (256*1024)
#define PEGASOS2_SRAM_BASE_ETH_PORT0 (PEGASOS2_SRAM_BASE)
#define PEGASOS2_SRAM_BASE_ETH_PORT1 (PEGASOS2_SRAM_BASE_ETH_PORT0 + (PEGASOS2_SRAM_SIZE / 2) )
#define PEGASOS2_SRAM_RXRING_SIZE (PEGASOS2_SRAM_SIZE/4)
#define PEGASOS2_SRAM_TXRING_SIZE (PEGASOS2_SRAM_SIZE/4)
#undef BE_VERBOSE
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,
};
/*
* The orion mdio driver only covers shared + 0x4 up to shared + 0x84 - 1
*/
static struct resource mv643xx_eth_mvmdio_resources[] = {
[0] = {
.name = "ethernet mdio base",
.start = 0xf1000000 + MV643XX_ETH_SHARED_REGS + 0x4,
.end = 0xf1000000 + MV643XX_ETH_SHARED_REGS + 0x83,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device mv643xx_eth_mvmdio_device = {
.name = "orion-mdio",
.id = -1,
.num_resources = ARRAY_SIZE(mv643xx_eth_mvmdio_resources),
.resource = mv643xx_eth_shared_resources,
};
static struct resource mv643xx_eth_port1_resources[] = {
[0] = {
.name = "eth port1 irq",
.start = 9,
.end = 9,
.flags = IORESOURCE_IRQ,
},
};
static struct mv643xx_eth_platform_data eth_port1_pd = {
.shared = &mv643xx_eth_shared_device,
.port_number = 1,
.phy_addr = MV643XX_ETH_PHY_ADDR(7),
.tx_sram_addr = PEGASOS2_SRAM_BASE_ETH_PORT1,
.tx_sram_size = PEGASOS2_SRAM_TXRING_SIZE,
.tx_queue_size = PEGASOS2_SRAM_TXRING_SIZE/16,
.rx_sram_addr = PEGASOS2_SRAM_BASE_ETH_PORT1 + PEGASOS2_SRAM_TXRING_SIZE,
.rx_sram_size = PEGASOS2_SRAM_RXRING_SIZE,
.rx_queue_size = PEGASOS2_SRAM_RXRING_SIZE/16,
};
static struct platform_device eth_port1_device = {
.name = MV643XX_ETH_NAME,
.id = 1,
.num_resources = ARRAY_SIZE(mv643xx_eth_port1_resources),
.resource = mv643xx_eth_port1_resources,
.dev = {
.platform_data = ð_port1_pd,
},
};
static struct platform_device *mv643xx_eth_pd_devs[] __initdata = {
&mv643xx_eth_shared_device,
&mv643xx_eth_mvmdio_device,
ð_port1_device,
};
/***********/
/***********/
#define MV_READ(offset,val) { val = readl(mv643xx_reg_base + offset); }
#define MV_WRITE(offset,data) writel(data, mv643xx_reg_base + offset)
static void __iomem *mv643xx_reg_base;
static int Enable_SRAM(void)
{
u32 ALong;
if (mv643xx_reg_base == NULL)
mv643xx_reg_base = ioremap(PEGASOS2_MARVELL_REGBASE,
PEGASOS2_MARVELL_REGSIZE);
if (mv643xx_reg_base == NULL)
return -ENOMEM;
#ifdef BE_VERBOSE
printk("Pegasos II/Marvell MV64361: register remapped from %p to %p\n",
(void *)PEGASOS2_MARVELL_REGBASE, (void *)mv643xx_reg_base);
#endif
MV_WRITE(MV64340_SRAM_CONFIG, 0);
MV_WRITE(MV64340_INTEGRATED_SRAM_BASE_ADDR, PEGASOS2_SRAM_BASE >> 16);
MV_READ(MV64340_BASE_ADDR_ENABLE, ALong);
ALong &= ~(1 << 19);
MV_WRITE(MV64340_BASE_ADDR_ENABLE, ALong);
ALong = 0x02;
ALong |= PEGASOS2_SRAM_BASE & 0xffff0000;
MV_WRITE(MV643XX_ETH_BAR_4, ALong);
MV_WRITE(MV643XX_ETH_SIZE_REG_4, (PEGASOS2_SRAM_SIZE-1) & 0xffff0000);
MV_READ(MV643XX_ETH_BASE_ADDR_ENABLE_REG, ALong);
ALong &= ~(1 << 4);
MV_WRITE(MV643XX_ETH_BASE_ADDR_ENABLE_REG, ALong);
#ifdef BE_VERBOSE
printk("Pegasos II/Marvell MV64361: register unmapped\n");
printk("Pegasos II/Marvell MV64361: SRAM at %p, size=%x\n", (void*) PEGASOS2_SRAM_BASE, PEGASOS2_SRAM_SIZE);
#endif
iounmap(mv643xx_reg_base);
mv643xx_reg_base = NULL;
return 1;
}
/***********/
/***********/
static int __init mv643xx_eth_add_pds(void)
{
int ret = 0;
static struct pci_device_id pci_marvell_mv64360[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PCI_DEVICE_ID_MARVELL_MV64360) },
{ }
};
#ifdef BE_VERBOSE
printk("Pegasos II/Marvell MV64361: init\n");
#endif
if (pci_dev_present(pci_marvell_mv64360)) {
ret = platform_add_devices(mv643xx_eth_pd_devs,
ARRAY_SIZE(mv643xx_eth_pd_devs));
if ( Enable_SRAM() < 0)
{
eth_port1_pd.tx_sram_addr = 0;
eth_port1_pd.tx_sram_size = 0;
eth_port1_pd.rx_sram_addr = 0;
eth_port1_pd.rx_sram_size = 0;
#ifdef BE_VERBOSE
printk("Pegasos II/Marvell MV64361: Can't enable the "
"SRAM\n");
#endif
}
}
#ifdef BE_VERBOSE
printk("Pegasos II/Marvell MV64361: init is over\n");
#endif
return ret;
}
device_initcall(mv643xx_eth_add_pds);