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mv643xx_eth: mbus decode window support

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Make it possible to pass mbus_dram_target_info to the mv643xx_eth
driver via the platform data, and make the mv643xx_eth driver
program the window registers based on this data if it is passed in.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
This commit is contained in:
Lennert Buytenhek 2008-04-24 01:27:17 +02:00 committed by Dale Farnsworth
parent fa3959f457
commit f2ce825d2a
2 changed files with 57 additions and 0 deletions
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51
drivers/net/mv643xx_eth.c
View File

@ -91,6 +91,11 @@
*/
#define PHY_ADDR_REG 0x0000
#define SMI_REG 0x0004
#define WINDOW_BASE(i) (0x0200 + ((i) << 3))
#define WINDOW_SIZE(i) (0x0204 + ((i) << 3))
#define WINDOW_REMAP_HIGH(i) (0x0280 + ((i) << 2))
#define WINDOW_BAR_ENABLE 0x0290
#define WINDOW_PROTECT(i) (0x0294 + ((i) << 4))
/*
* Per-port registers.
@ -512,6 +517,8 @@ struct mv643xx_shared_private {
/* used to protect SMI_REG, which is shared across ports */
spinlock_t phy_lock;
u32 win_protect;
};
struct mv643xx_private {
@ -1888,6 +1895,9 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
mp->shared = platform_get_drvdata(pd->shared);
port_num = mp->port_num = pd->port_number;
if (mp->shared->win_protect)
wrl(mp, WINDOW_PROTECT(port_num), mp->shared->win_protect);
/* set default config values */
eth_port_uc_addr_get(mp, dev->dev_addr);
mp->rx_ring_size = PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
@ -1992,9 +2002,44 @@ static int mv643xx_eth_remove(struct platform_device *pdev)
return 0;
}
static void mv643xx_eth_conf_mbus_windows(struct mv643xx_shared_private *msp,
struct mbus_dram_target_info *dram)
{
void __iomem *base = msp->eth_base;
u32 win_enable;
u32 win_protect;
int i;
for (i = 0; i < 6; i++) {
writel(0, base + WINDOW_BASE(i));
writel(0, base + WINDOW_SIZE(i));
if (i < 4)
writel(0, base + WINDOW_REMAP_HIGH(i));
}
win_enable = 0x3f;
win_protect = 0;
for (i = 0; i < dram->num_cs; i++) {
struct mbus_dram_window *cs = dram->cs + i;
writel((cs->base & 0xffff0000) |
(cs->mbus_attr << 8) |
dram->mbus_dram_target_id, base + WINDOW_BASE(i));
writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
win_enable &= ~(1 << i);
win_protect |= 3 << (2 * i);
}
writel(win_enable, base + WINDOW_BAR_ENABLE);
msp->win_protect = win_protect;
}
static int mv643xx_eth_shared_probe(struct platform_device *pdev)
{
static int mv643xx_version_printed = 0;
struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
struct mv643xx_shared_private *msp;
struct resource *res;
int ret;
@ -2021,6 +2066,12 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, msp);
/*
* (Re-)program MBUS remapping windows if we are asked to.
*/
if (pd != NULL && pd->dram != NULL)
mv643xx_eth_conf_mbus_windows(msp, pd->dram);
return 0;
out_free:

6
include/linux/mv643xx_eth.h
View File

@ -5,6 +5,8 @@
#ifndef __LINUX_MV643XX_ETH_H
#define __LINUX_MV643XX_ETH_H
#include <linux/mbus.h>
#define MV643XX_ETH_SHARED_NAME "mv643xx_eth_shared"
#define MV643XX_ETH_NAME "mv643xx_eth"
#define MV643XX_ETH_SHARED_REGS 0x2000
@ -13,6 +15,10 @@
#define MV643XX_ETH_SIZE_REG_4 0x2224
#define MV643XX_ETH_BASE_ADDR_ENABLE_REG 0x2290
struct mv643xx_eth_shared_platform_data {
struct mbus_dram_target_info *dram;
};
struct mv643xx_eth_platform_data {
struct platform_device *shared;
int port_number;