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Diffstat (limited to 'drivers/mtd/maps/octagon-5066.c')
-rw-r--r--drivers/mtd/maps/octagon-5066.c246
1 files changed, 0 insertions, 246 deletions
diff --git a/drivers/mtd/maps/octagon-5066.c b/drivers/mtd/maps/octagon-5066.c
deleted file mode 100644
index 807ac2a2e686..000000000000
--- a/drivers/mtd/maps/octagon-5066.c
+++ /dev/null
@@ -1,246 +0,0 @@
-/* ######################################################################
-
- Octagon 5066 MTD Driver.
-
- The Octagon 5066 is a SBC based on AMD's 586-WB running at 133 MHZ. It
- comes with a builtin AMD 29F016 flash chip and a socketed EEPROM that
- is replacable by flash. Both units are mapped through a multiplexer
- into a 32k memory window at 0xe8000. The control register for the
- multiplexing unit is located at IO 0x208 with a bit map of
- 0-5 Page Selection in 32k increments
- 6-7 Device selection:
- 00 SSD off
- 01 SSD 0 (Socket)
- 10 SSD 1 (Flash chip)
- 11 undefined
-
- On each SSD, the first 128k is reserved for use by the bios
- (actually it IS the bios..) This only matters if you are booting off the
- flash, you must not put a file system starting there.
-
- The driver tries to do a detection algorithm to guess what sort of devices
- are plugged into the sockets.
-
- ##################################################################### */
-
-#include <linux/module.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <asm/io.h>
-
-#include <linux/mtd/map.h>
-#include <linux/mtd/mtd.h>
-
-#define WINDOW_START 0xe8000
-#define WINDOW_LENGTH 0x8000
-#define WINDOW_SHIFT 27
-#define WINDOW_MASK 0x7FFF
-#define PAGE_IO 0x208
-
-static volatile char page_n_dev = 0;
-static unsigned long iomapadr;
-static DEFINE_SPINLOCK(oct5066_spin);
-
-/*
- * We use map_priv_1 to identify which device we are.
- */
-
-static void __oct5066_page(struct map_info *map, __u8 byte)
-{
- outb(byte,PAGE_IO);
- page_n_dev = byte;
-}
-
-static inline void oct5066_page(struct map_info *map, unsigned long ofs)
-{
- __u8 byte = map->map_priv_1 | (ofs >> WINDOW_SHIFT);
-
- if (page_n_dev != byte)
- __oct5066_page(map, byte);
-}
-
-
-static map_word oct5066_read8(struct map_info *map, unsigned long ofs)
-{
- map_word ret;
- spin_lock(&oct5066_spin);
- oct5066_page(map, ofs);
- ret.x[0] = readb(iomapadr + (ofs & WINDOW_MASK));
- spin_unlock(&oct5066_spin);
- return ret;
-}
-
-static void oct5066_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
-{
- while(len) {
- unsigned long thislen = len;
- if (len > (WINDOW_LENGTH - (from & WINDOW_MASK)))
- thislen = WINDOW_LENGTH-(from & WINDOW_MASK);
-
- spin_lock(&oct5066_spin);
- oct5066_page(map, from);
- memcpy_fromio(to, iomapadr + from, thislen);
- spin_unlock(&oct5066_spin);
- to += thislen;
- from += thislen;
- len -= thislen;
- }
-}
-
-static void oct5066_write8(struct map_info *map, map_word d, unsigned long adr)
-{
- spin_lock(&oct5066_spin);
- oct5066_page(map, adr);
- writeb(d.x[0], iomapadr + (adr & WINDOW_MASK));
- spin_unlock(&oct5066_spin);
-}
-
-static void oct5066_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
-{
- while(len) {
- unsigned long thislen = len;
- if (len > (WINDOW_LENGTH - (to & WINDOW_MASK)))
- thislen = WINDOW_LENGTH-(to & WINDOW_MASK);
-
- spin_lock(&oct5066_spin);
- oct5066_page(map, to);
- memcpy_toio(iomapadr + to, from, thislen);
- spin_unlock(&oct5066_spin);
- to += thislen;
- from += thislen;
- len -= thislen;
- }
-}
-
-static struct map_info oct5066_map[2] = {
- {
- .name = "Octagon 5066 Socket",
- .phys = NO_XIP,
- .size = 512 * 1024,
- .bankwidth = 1,
- .read = oct5066_read8,
- .copy_from = oct5066_copy_from,
- .write = oct5066_write8,
- .copy_to = oct5066_copy_to,
- .map_priv_1 = 1<<6
- },
- {
- .name = "Octagon 5066 Internal Flash",
- .phys = NO_XIP,
- .size = 2 * 1024 * 1024,
- .bankwidth = 1,
- .read = oct5066_read8,
- .copy_from = oct5066_copy_from,
- .write = oct5066_write8,
- .copy_to = oct5066_copy_to,
- .map_priv_1 = 2<<6
- }
-};
-
-static struct mtd_info *oct5066_mtd[2] = {NULL, NULL};
-
-// OctProbe - Sense if this is an octagon card
-// ---------------------------------------------------------------------
-/* Perform a simple validity test, we map the window select SSD0 and
- change pages while monitoring the window. A change in the window,
- controlled by the PAGE_IO port is a functioning 5066 board. This will
- fail if the thing in the socket is set to a uniform value. */
-static int __init OctProbe(void)
-{
- unsigned int Base = (1 << 6);
- unsigned long I;
- unsigned long Values[10];
- for (I = 0; I != 20; I++)
- {
- outb(Base + (I%10),PAGE_IO);
- if (I < 10)
- {
- // Record the value and check for uniqueness
- Values[I%10] = readl(iomapadr);
- if (I > 0 && Values[I%10] == Values[0])
- return -EAGAIN;
- }
- else
- {
- // Make sure we get the same values on the second pass
- if (Values[I%10] != readl(iomapadr))
- return -EAGAIN;
- }
- }
- return 0;
-}
-
-void cleanup_oct5066(void)
-{
- int i;
- for (i=0; i<2; i++) {
- if (oct5066_mtd[i]) {
- mtd_device_unregister(oct5066_mtd[i]);
- map_destroy(oct5066_mtd[i]);
- }
- }
- iounmap((void *)iomapadr);
- release_region(PAGE_IO, 1);
-}
-
-static int __init init_oct5066(void)
-{
- int i;
- int ret = 0;
-
- // Do an autoprobe sequence
- if (!request_region(PAGE_IO,1,"Octagon SSD")) {
- printk(KERN_NOTICE "5066: Page Register in Use\n");
- return -EAGAIN;
- }
- iomapadr = (unsigned long)ioremap(WINDOW_START, WINDOW_LENGTH);
- if (!iomapadr) {
- printk(KERN_NOTICE "Failed to ioremap memory region\n");
- ret = -EIO;
- goto out_rel;
- }
- if (OctProbe() != 0) {
- printk(KERN_NOTICE "5066: Octagon Probe Failed, is this an Octagon 5066 SBC?\n");
- iounmap((void *)iomapadr);
- ret = -EAGAIN;
- goto out_unmap;
- }
-
- // Print out our little header..
- printk("Octagon 5066 SSD IO:0x%x MEM:0x%x-0x%x\n",PAGE_IO,WINDOW_START,
- WINDOW_START+WINDOW_LENGTH);
-
- for (i=0; i<2; i++) {
- oct5066_mtd[i] = do_map_probe("cfi_probe", &oct5066_map[i]);
- if (!oct5066_mtd[i])
- oct5066_mtd[i] = do_map_probe("jedec", &oct5066_map[i]);
- if (!oct5066_mtd[i])
- oct5066_mtd[i] = do_map_probe("map_ram", &oct5066_map[i]);
- if (!oct5066_mtd[i])
- oct5066_mtd[i] = do_map_probe("map_rom", &oct5066_map[i]);
- if (oct5066_mtd[i]) {
- oct5066_mtd[i]->owner = THIS_MODULE;
- mtd_device_register(oct5066_mtd[i], NULL, 0);
- }
- }
-
- if (!oct5066_mtd[0] && !oct5066_mtd[1]) {
- cleanup_oct5066();
- return -ENXIO;
- }
-
- return 0;
-
- out_unmap:
- iounmap((void *)iomapadr);
- out_rel:
- release_region(PAGE_IO, 1);
- return ret;
-}
-
-module_init(init_oct5066);
-module_exit(cleanup_oct5066);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jason Gunthorpe <jgg@deltatee.com>, David Woodhouse <dwmw2@infradead.org>");
-MODULE_DESCRIPTION("MTD map driver for Octagon 5066 Single Board Computer");