+++ /dev/null
-/*
- * Mapping of a custom board with both AMD CFI and JEDEC flash in partitions.
- * Config with both CFI and JEDEC device support.
- *
- * Basically physmap.c with the addition of partitions and
- * an array of mapping info to accommodate more than one flash type per board.
- *
- * Copyright 2005-2007 PMC-Sierra, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-
-#include <asm/io.h>
-
-#include <msp_prom.h>
-#include <msp_regs.h>
-
-
-static struct mtd_info **msp_flash;
-static struct mtd_partition **msp_parts;
-static struct map_info *msp_maps;
-static int fcnt;
-
-#define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n", __func__, __LINE__)
-
-static int __init init_msp_flash(void)
-{
- int i, j, ret = -ENOMEM;
- int offset, coff;
- char *env;
- int pcnt;
- char flash_name[] = "flash0";
- char part_name[] = "flash0_0";
- unsigned addr, size;
-
- /* If ELB is disabled by "ful-mux" mode, we can't get at flash */
- if ((*DEV_ID_REG & DEV_ID_SINGLE_PC) &&
- (*ELB_1PC_EN_REG & SINGLE_PCCARD)) {
- printk(KERN_NOTICE "Single PC Card mode: no flash access\n");
- return -ENXIO;
- }
-
- /* examine the prom environment for flash devices */
- for (fcnt = 0; (env = prom_getenv(flash_name)); fcnt++)
- flash_name[5] = '0' + fcnt + 1;
-
- if (fcnt < 1)
- return -ENXIO;
-
- printk(KERN_NOTICE "Found %d PMC flash devices\n", fcnt);
-
- msp_flash = kcalloc(fcnt, sizeof(*msp_flash), GFP_KERNEL);
- if (!msp_flash)
- return -ENOMEM;
-
- msp_parts = kcalloc(fcnt, sizeof(*msp_parts), GFP_KERNEL);
- if (!msp_parts)
- goto free_msp_flash;
-
- msp_maps = kcalloc(fcnt, sizeof(*msp_maps), GFP_KERNEL);
- if (!msp_maps)
- goto free_msp_parts;
-
- /* loop over the flash devices, initializing each */
- for (i = 0; i < fcnt; i++) {
- /* examine the prom environment for flash partititions */
- part_name[5] = '0' + i;
- part_name[7] = '0';
- for (pcnt = 0; (env = prom_getenv(part_name)); pcnt++)
- part_name[7] = '0' + pcnt + 1;
-
- if (pcnt == 0) {
- printk(KERN_NOTICE "Skipping flash device %d "
- "(no partitions defined)\n", i);
- continue;
- }
-
- msp_parts[i] = kcalloc(pcnt, sizeof(struct mtd_partition),
- GFP_KERNEL);
- if (!msp_parts[i])
- goto cleanup_loop;
-
- /* now initialize the devices proper */
- flash_name[5] = '0' + i;
- env = prom_getenv(flash_name);
-
- if (sscanf(env, "%x:%x", &addr, &size) < 2) {
- ret = -ENXIO;
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
- addr = CPHYSADDR(addr);
-
- printk(KERN_NOTICE
- "MSP flash device \"%s\": 0x%08x at 0x%08x\n",
- flash_name, size, addr);
- /* This must matchs the actual size of the flash chip */
- msp_maps[i].size = size;
- msp_maps[i].phys = addr;
-
- /*
- * Platforms have a specific limit of the size of memory
- * which may be mapped for flash:
- */
- if (size > CONFIG_MSP_FLASH_MAP_LIMIT)
- size = CONFIG_MSP_FLASH_MAP_LIMIT;
-
- msp_maps[i].virt = ioremap(addr, size);
- if (msp_maps[i].virt == NULL) {
- ret = -ENXIO;
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
-
- msp_maps[i].bankwidth = 1;
- msp_maps[i].name = kstrndup(flash_name, 7, GFP_KERNEL);
- if (!msp_maps[i].name) {
- iounmap(msp_maps[i].virt);
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
-
- for (j = 0; j < pcnt; j++) {
- part_name[5] = '0' + i;
- part_name[7] = '0' + j;
-
- env = prom_getenv(part_name);
-
- if (sscanf(env, "%x:%x:%n", &offset, &size,
- &coff) < 2) {
- ret = -ENXIO;
- kfree(msp_maps[i].name);
- iounmap(msp_maps[i].virt);
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
-
- msp_parts[i][j].size = size;
- msp_parts[i][j].offset = offset;
- msp_parts[i][j].name = env + coff;
- }
-
- /* now probe and add the device */
- simple_map_init(&msp_maps[i]);
- msp_flash[i] = do_map_probe("cfi_probe", &msp_maps[i]);
- if (msp_flash[i]) {
- msp_flash[i]->owner = THIS_MODULE;
- mtd_device_register(msp_flash[i], msp_parts[i], pcnt);
- } else {
- printk(KERN_ERR "map probe failed for flash\n");
- ret = -ENXIO;
- kfree(msp_maps[i].name);
- iounmap(msp_maps[i].virt);
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
- }
-
- return 0;
-
-cleanup_loop:
- while (i--) {
- mtd_device_unregister(msp_flash[i]);
- map_destroy(msp_flash[i]);
- kfree(msp_maps[i].name);
- iounmap(msp_maps[i].virt);
- kfree(msp_parts[i]);
- }
- kfree(msp_maps);
-free_msp_parts:
- kfree(msp_parts);
-free_msp_flash:
- kfree(msp_flash);
- return ret;
-}
-
-static void __exit cleanup_msp_flash(void)
-{
- int i;
-
- for (i = 0; i < fcnt; i++) {
- mtd_device_unregister(msp_flash[i]);
- map_destroy(msp_flash[i]);
- iounmap((void *)msp_maps[i].virt);
-
- /* free the memory */
- kfree(msp_maps[i].name);
- kfree(msp_parts[i]);
- }
-
- kfree(msp_flash);
- kfree(msp_parts);
- kfree(msp_maps);
-}
-
-MODULE_AUTHOR("PMC-Sierra, Inc");
-MODULE_DESCRIPTION("MTD map driver for PMC-Sierra MSP boards");
-MODULE_LICENSE("GPL");
-
-module_init(init_msp_flash);
-module_exit(cleanup_msp_flash);
git.samba.org / sfrench / cifs-2.6.git / commitdiff