android_kernel_motorola_sm6225/drivers/mtd/maps/pci.c
Adrian Bunk 59018b6d2a MTD/JFFS2: remove CVS keywords
Once upon a time, the MTD repository was using CVS.

This patch therefore removes all usages of the no longer updated CVS
keywords from the MTD code.

This also includes code that printed them to the user.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-06-04 17:50:17 +01:00

384 lines
9.1 KiB
C

/*
* linux/drivers/mtd/maps/pci.c
*
* Copyright (C) 2001 Russell King, All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Generic PCI memory map driver. We support the following boards:
* - Intel IQ80310 ATU.
* - Intel EBSA285 (blank rom programming mode). Tested working 27/09/2001
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
struct map_pci_info;
struct mtd_pci_info {
int (*init)(struct pci_dev *dev, struct map_pci_info *map);
void (*exit)(struct pci_dev *dev, struct map_pci_info *map);
unsigned long (*translate)(struct map_pci_info *map, unsigned long ofs);
const char *map_name;
};
struct map_pci_info {
struct map_info map;
void __iomem *base;
void (*exit)(struct pci_dev *dev, struct map_pci_info *map);
unsigned long (*translate)(struct map_pci_info *map, unsigned long ofs);
struct pci_dev *dev;
};
static map_word mtd_pci_read8(struct map_info *_map, unsigned long ofs)
{
struct map_pci_info *map = (struct map_pci_info *)_map;
map_word val;
val.x[0]= readb(map->base + map->translate(map, ofs));
// printk("read8 : %08lx => %02x\n", ofs, val.x[0]);
return val;
}
#if 0
static map_word mtd_pci_read16(struct map_info *_map, unsigned long ofs)
{
struct map_pci_info *map = (struct map_pci_info *)_map;
map_word val;
val.x[0] = readw(map->base + map->translate(map, ofs));
// printk("read16: %08lx => %04x\n", ofs, val.x[0]);
return val;
}
#endif
static map_word mtd_pci_read32(struct map_info *_map, unsigned long ofs)
{
struct map_pci_info *map = (struct map_pci_info *)_map;
map_word val;
val.x[0] = readl(map->base + map->translate(map, ofs));
// printk("read32: %08lx => %08x\n", ofs, val.x[0]);
return val;
}
static void mtd_pci_copyfrom(struct map_info *_map, void *to, unsigned long from, ssize_t len)
{
struct map_pci_info *map = (struct map_pci_info *)_map;
memcpy_fromio(to, map->base + map->translate(map, from), len);
}
static void mtd_pci_write8(struct map_info *_map, map_word val, unsigned long ofs)
{
struct map_pci_info *map = (struct map_pci_info *)_map;
// printk("write8 : %08lx <= %02x\n", ofs, val.x[0]);
writeb(val.x[0], map->base + map->translate(map, ofs));
}
#if 0
static void mtd_pci_write16(struct map_info *_map, map_word val, unsigned long ofs)
{
struct map_pci_info *map = (struct map_pci_info *)_map;
// printk("write16: %08lx <= %04x\n", ofs, val.x[0]);
writew(val.x[0], map->base + map->translate(map, ofs));
}
#endif
static void mtd_pci_write32(struct map_info *_map, map_word val, unsigned long ofs)
{
struct map_pci_info *map = (struct map_pci_info *)_map;
// printk("write32: %08lx <= %08x\n", ofs, val.x[0]);
writel(val.x[0], map->base + map->translate(map, ofs));
}
static void mtd_pci_copyto(struct map_info *_map, unsigned long to, const void *from, ssize_t len)
{
struct map_pci_info *map = (struct map_pci_info *)_map;
memcpy_toio(map->base + map->translate(map, to), from, len);
}
static const struct map_info mtd_pci_map = {
.phys = NO_XIP,
.copy_from = mtd_pci_copyfrom,
.copy_to = mtd_pci_copyto,
};
/*
* Intel IOP80310 Flash driver
*/
static int
intel_iq80310_init(struct pci_dev *dev, struct map_pci_info *map)
{
u32 win_base;
map->map.bankwidth = 1;
map->map.read = mtd_pci_read8,
map->map.write = mtd_pci_write8,
map->map.size = 0x00800000;
map->base = ioremap_nocache(pci_resource_start(dev, 0),
pci_resource_len(dev, 0));
if (!map->base)
return -ENOMEM;
/*
* We want to base the memory window at Xscale
* bus address 0, not 0x1000.
*/
pci_read_config_dword(dev, 0x44, &win_base);
pci_write_config_dword(dev, 0x44, 0);
map->map.map_priv_2 = win_base;
return 0;
}
static void
intel_iq80310_exit(struct pci_dev *dev, struct map_pci_info *map)
{
if (map->base)
iounmap(map->base);
pci_write_config_dword(dev, 0x44, map->map.map_priv_2);
}
static unsigned long
intel_iq80310_translate(struct map_pci_info *map, unsigned long ofs)
{
unsigned long page_addr = ofs & 0x00400000;
/*
* This mundges the flash location so we avoid
* the first 80 bytes (they appear to read nonsense).
*/
if (page_addr) {
writel(0x00000008, map->base + 0x1558);
writel(0x00000000, map->base + 0x1550);
} else {
writel(0x00000007, map->base + 0x1558);
writel(0x00800000, map->base + 0x1550);
ofs += 0x00800000;
}
return ofs;
}
static struct mtd_pci_info intel_iq80310_info = {
.init = intel_iq80310_init,
.exit = intel_iq80310_exit,
.translate = intel_iq80310_translate,
.map_name = "cfi_probe",
};
/*
* Intel DC21285 driver
*/
static int
intel_dc21285_init(struct pci_dev *dev, struct map_pci_info *map)
{
unsigned long base, len;
base = pci_resource_start(dev, PCI_ROM_RESOURCE);
len = pci_resource_len(dev, PCI_ROM_RESOURCE);
if (!len || !base) {
/*
* No ROM resource
*/
base = pci_resource_start(dev, 2);
len = pci_resource_len(dev, 2);
/*
* We need to re-allocate PCI BAR2 address range to the
* PCI ROM BAR, and disable PCI BAR2.
*/
} else {
/*
* Hmm, if an address was allocated to the ROM resource, but
* not enabled, should we be allocating a new resource for it
* or simply enabling it?
*/
if (!(pci_resource_flags(dev, PCI_ROM_RESOURCE) &
IORESOURCE_ROM_ENABLE)) {
u32 val;
pci_resource_flags(dev, PCI_ROM_RESOURCE) |= IORESOURCE_ROM_ENABLE;
pci_read_config_dword(dev, PCI_ROM_ADDRESS, &val);
val |= PCI_ROM_ADDRESS_ENABLE;
pci_write_config_dword(dev, PCI_ROM_ADDRESS, val);
printk("%s: enabling expansion ROM\n", pci_name(dev));
}
}
if (!len || !base)
return -ENXIO;
map->map.bankwidth = 4;
map->map.read = mtd_pci_read32,
map->map.write = mtd_pci_write32,
map->map.size = len;
map->base = ioremap_nocache(base, len);
if (!map->base)
return -ENOMEM;
return 0;
}
static void
intel_dc21285_exit(struct pci_dev *dev, struct map_pci_info *map)
{
u32 val;
if (map->base)
iounmap(map->base);
/*
* We need to undo the PCI BAR2/PCI ROM BAR address alteration.
*/
pci_resource_flags(dev, PCI_ROM_RESOURCE) &= ~IORESOURCE_ROM_ENABLE;
pci_read_config_dword(dev, PCI_ROM_ADDRESS, &val);
val &= ~PCI_ROM_ADDRESS_ENABLE;
pci_write_config_dword(dev, PCI_ROM_ADDRESS, val);
}
static unsigned long
intel_dc21285_translate(struct map_pci_info *map, unsigned long ofs)
{
return ofs & 0x00ffffc0 ? ofs : (ofs ^ (1 << 5));
}
static struct mtd_pci_info intel_dc21285_info = {
.init = intel_dc21285_init,
.exit = intel_dc21285_exit,
.translate = intel_dc21285_translate,
.map_name = "jedec_probe",
};
/*
* PCI device ID table
*/
static struct pci_device_id mtd_pci_ids[] = {
{
.vendor = PCI_VENDOR_ID_INTEL,
.device = 0x530d,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.class = PCI_CLASS_MEMORY_OTHER << 8,
.class_mask = 0xffff00,
.driver_data = (unsigned long)&intel_iq80310_info,
},
{
.vendor = PCI_VENDOR_ID_DEC,
.device = PCI_DEVICE_ID_DEC_21285,
.subvendor = 0, /* DC21285 defaults to 0 on reset */
.subdevice = 0, /* DC21285 defaults to 0 on reset */
.driver_data = (unsigned long)&intel_dc21285_info,
},
{ 0, }
};
/*
* Generic code follows.
*/
static int __devinit
mtd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
struct mtd_pci_info *info = (struct mtd_pci_info *)id->driver_data;
struct map_pci_info *map = NULL;
struct mtd_info *mtd = NULL;
int err;
err = pci_enable_device(dev);
if (err)
goto out;
err = pci_request_regions(dev, "pci mtd");
if (err)
goto out;
map = kmalloc(sizeof(*map), GFP_KERNEL);
err = -ENOMEM;
if (!map)
goto release;
map->map = mtd_pci_map;
map->map.name = pci_name(dev);
map->dev = dev;
map->exit = info->exit;
map->translate = info->translate;
err = info->init(dev, map);
if (err)
goto release;
/* tsk - do_map_probe should take const char * */
mtd = do_map_probe((char *)info->map_name, &map->map);
err = -ENODEV;
if (!mtd)
goto release;
mtd->owner = THIS_MODULE;
add_mtd_device(mtd);
pci_set_drvdata(dev, mtd);
return 0;
release:
if (map) {
map->exit(dev, map);
kfree(map);
}
pci_release_regions(dev);
out:
return err;
}
static void __devexit
mtd_pci_remove(struct pci_dev *dev)
{
struct mtd_info *mtd = pci_get_drvdata(dev);
struct map_pci_info *map = mtd->priv;
del_mtd_device(mtd);
map_destroy(mtd);
map->exit(dev, map);
kfree(map);
pci_set_drvdata(dev, NULL);
pci_release_regions(dev);
}
static struct pci_driver mtd_pci_driver = {
.name = "MTD PCI",
.probe = mtd_pci_probe,
.remove = __devexit_p(mtd_pci_remove),
.id_table = mtd_pci_ids,
};
static int __init mtd_pci_maps_init(void)
{
return pci_register_driver(&mtd_pci_driver);
}
static void __exit mtd_pci_maps_exit(void)
{
pci_unregister_driver(&mtd_pci_driver);
}
module_init(mtd_pci_maps_init);
module_exit(mtd_pci_maps_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
MODULE_DESCRIPTION("Generic PCI map driver");
MODULE_DEVICE_TABLE(pci, mtd_pci_ids);