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path: root/drivers/mtd/devices/pmc551.c
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Diffstat (limited to 'drivers/mtd/devices/pmc551.c')
-rw-r--r--drivers/mtd/devices/pmc551.c171
1 files changed, 79 insertions, 92 deletions
diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c
index 354e1657cc2..f02603e1bfe 100644
--- a/drivers/mtd/devices/pmc551.c
+++ b/drivers/mtd/devices/pmc551.c
@@ -1,6 +1,4 @@
/*
- * $Id: pmc551.c,v 1.32 2005/11/07 11:14:25 gleixner Exp $
- *
* PMC551 PCI Mezzanine Ram Device
*
* Author:
@@ -30,13 +28,13 @@
*
* Notes:
* Due to what I assume is more buggy SROM, the 64M PMC551 I
- * have available claims that all 4 of it's DRAM banks have 64M
- * of ram configured (making a grand total of 256M onboard).
+ * have available claims that all 4 of its DRAM banks have 64MiB
+ * of ram configured (making a grand total of 256MiB onboard).
* This is slightly annoying since the BAR0 size reflects the
* aperture size, not the dram size, and the V370PDC supplies no
* other method for memory size discovery. This problem is
* mostly only relevant when compiled as a module, as the
- * unloading of the module with an aperture size smaller then
+ * unloading of the module with an aperture size smaller than
* the ram will cause the driver to detect the onboard memory
* size to be equal to the aperture size when the module is
* reloaded. Soooo, to help, the module supports an msize
@@ -70,7 +68,7 @@
* made the memory unusable, added a fix to code to touch up
* the DRAM some.
*
- * Bugs/FIXME's:
+ * Bugs/FIXMEs:
* * MUST fix the init function to not spin on a register
* waiting for it to set .. this does not safely handle busted
* devices that never reset the register correctly which will
@@ -86,7 +84,6 @@
#include <linux/module.h>
#include <asm/uaccess.h>
#include <linux/types.h>
-#include <linux/sched.h>
#include <linux/init.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
@@ -96,15 +93,49 @@
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <asm/io.h>
-#include <asm/system.h>
#include <linux/pci.h>
-
#include <linux/mtd/mtd.h>
-#include <linux/mtd/pmc551.h>
-#include <linux/mtd/compatmac.h>
+
+#define PMC551_VERSION \
+ "Ramix PMC551 PCI Mezzanine Ram Driver. (C) 1999,2000 Nortel Networks.\n"
+
+#define PCI_VENDOR_ID_V3_SEMI 0x11b0
+#define PCI_DEVICE_ID_V3_SEMI_V370PDC 0x0200
+
+#define PMC551_PCI_MEM_MAP0 0x50
+#define PMC551_PCI_MEM_MAP1 0x54
+#define PMC551_PCI_MEM_MAP_MAP_ADDR_MASK 0x3ff00000
+#define PMC551_PCI_MEM_MAP_APERTURE_MASK 0x000000f0
+#define PMC551_PCI_MEM_MAP_REG_EN 0x00000002
+#define PMC551_PCI_MEM_MAP_ENABLE 0x00000001
+
+#define PMC551_SDRAM_MA 0x60
+#define PMC551_SDRAM_CMD 0x62
+#define PMC551_DRAM_CFG 0x64
+#define PMC551_SYS_CTRL_REG 0x78
+
+#define PMC551_DRAM_BLK0 0x68
+#define PMC551_DRAM_BLK1 0x6c
+#define PMC551_DRAM_BLK2 0x70
+#define PMC551_DRAM_BLK3 0x74
+#define PMC551_DRAM_BLK_GET_SIZE(x) (524288 << ((x >> 4) & 0x0f))
+#define PMC551_DRAM_BLK_SET_COL_MUX(x, v) (((x) & ~0x00007000) | (((v) & 0x7) << 12))
+#define PMC551_DRAM_BLK_SET_ROW_MUX(x, v) (((x) & ~0x00000f00) | (((v) & 0xf) << 8))
+
+struct mypriv {
+ struct pci_dev *dev;
+ u_char *start;
+ u32 base_map0;
+ u32 curr_map0;
+ u32 asize;
+ struct mtd_info *nextpmc551;
+};
static struct mtd_info *pmc551list;
+static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, void **virt, resource_size_t *phys);
+
static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
{
struct mypriv *priv = mtd->priv;
@@ -120,22 +151,13 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
#endif
end = instr->addr + instr->len - 1;
-
- /* Is it past the end? */
- if (end > mtd->size) {
-#ifdef CONFIG_MTD_PMC551_DEBUG
- printk(KERN_DEBUG "pmc551_erase() out of bounds (%ld > %ld)\n",
- (long)end, (long)mtd->size);
-#endif
- return -EINVAL;
- }
-
eoff_hi = end & ~(priv->asize - 1);
soff_hi = instr->addr & ~(priv->asize - 1);
eoff_lo = end & (priv->asize - 1);
soff_lo = instr->addr & (priv->asize - 1);
- pmc551_point(mtd, instr->addr, instr->len, &retlen, &ptr);
+ pmc551_point(mtd, instr->addr, instr->len, &retlen,
+ (void **)&ptr, NULL);
if (soff_hi == eoff_hi || mtd->size == priv->asize) {
/* The whole thing fits within one access, so just one shot
@@ -155,7 +177,8 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
}
soff_hi += priv->asize;
pmc551_point(mtd, (priv->base_map0 | soff_hi),
- priv->asize, &retlen, &ptr);
+ priv->asize, &retlen,
+ (void **)&ptr, NULL);
}
memset(ptr, 0xff, eoff_lo);
}
@@ -171,7 +194,7 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
}
static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char ** mtdbuf)
+ size_t *retlen, void **virt, resource_size_t *phys)
{
struct mypriv *priv = mtd->priv;
u32 soff_hi;
@@ -181,14 +204,6 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
printk(KERN_DEBUG "pmc551_point(%ld, %ld)\n", (long)from, (long)len);
#endif
- if (from + len > mtd->size) {
-#ifdef CONFIG_MTD_PMC551_DEBUG
- printk(KERN_DEBUG "pmc551_point() out of bounds (%ld > %ld)\n",
- (long)from + len, (long)mtd->size);
-#endif
- return -EINVAL;
- }
-
soff_hi = from & ~(priv->asize - 1);
soff_lo = from & (priv->asize - 1);
@@ -199,17 +214,17 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
priv->curr_map0 = soff_hi;
}
- *mtdbuf = priv->start + soff_lo;
+ *virt = priv->start + soff_lo;
*retlen = len;
return 0;
}
-static void pmc551_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from,
- size_t len)
+static int pmc551_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_unpoint()\n");
#endif
+ return 0;
}
static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
@@ -228,22 +243,12 @@ static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
#endif
end = from + len - 1;
-
- /* Is it past the end? */
- if (end > mtd->size) {
-#ifdef CONFIG_MTD_PMC551_DEBUG
- printk(KERN_DEBUG "pmc551_read() out of bounds (%ld > %ld)\n",
- (long)end, (long)mtd->size);
-#endif
- return -EINVAL;
- }
-
soff_hi = from & ~(priv->asize - 1);
eoff_hi = end & ~(priv->asize - 1);
soff_lo = from & (priv->asize - 1);
eoff_lo = end & (priv->asize - 1);
- pmc551_point(mtd, from, len, retlen, &ptr);
+ pmc551_point(mtd, from, len, retlen, (void **)&ptr, NULL);
if (soff_hi == eoff_hi) {
/* The whole thing fits within one access, so just one shot
@@ -264,7 +269,8 @@ static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
goto out;
}
soff_hi += priv->asize;
- pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr);
+ pmc551_point(mtd, soff_hi, priv->asize, retlen,
+ (void **)&ptr, NULL);
}
memcpy(copyto, ptr, eoff_lo);
copyto += eoff_lo;
@@ -294,22 +300,12 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
#endif
end = to + len - 1;
- /* Is it past the end? or did the u32 wrap? */
- if (end > mtd->size) {
-#ifdef CONFIG_MTD_PMC551_DEBUG
- printk(KERN_DEBUG "pmc551_write() out of bounds (end: %ld, "
- "size: %ld, to: %ld)\n", (long)end, (long)mtd->size,
- (long)to);
-#endif
- return -EINVAL;
- }
-
soff_hi = to & ~(priv->asize - 1);
eoff_hi = end & ~(priv->asize - 1);
soff_lo = to & (priv->asize - 1);
eoff_lo = end & (priv->asize - 1);
- pmc551_point(mtd, to, len, retlen, &ptr);
+ pmc551_point(mtd, to, len, retlen, (void **)&ptr, NULL);
if (soff_hi == eoff_hi) {
/* The whole thing fits within one access, so just one shot
@@ -330,7 +326,8 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
goto out;
}
soff_hi += priv->asize;
- pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr);
+ pmc551_point(mtd, soff_hi, priv->asize, retlen,
+ (void **)&ptr, NULL);
}
memcpy(ptr, copyfrom, eoff_lo);
copyfrom += eoff_lo;
@@ -348,7 +345,7 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
* Fixup routines for the V370PDC
* PCI device ID 0x020011b0
*
- * This function basicly kick starts the DRAM oboard the card and gets it
+ * This function basically kick starts the DRAM oboard the card and gets it
* ready to be used. Before this is done the device reads VERY erratic, so
* much that it can crash the Linux 2.2.x series kernels when a user cat's
* /proc/pci .. though that is mainly a kernel bug in handling the PCI DEVSEL
@@ -356,7 +353,7 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
* mechanism
* returns the size of the memory region found.
*/
-static u32 fixup_pmc551(struct pci_dev *dev)
+static int fixup_pmc551(struct pci_dev *dev)
{
#ifdef CONFIG_MTD_PMC551_BUGFIX
u32 dram_data;
@@ -537,7 +534,7 @@ static u32 fixup_pmc551(struct pci_dev *dev)
/*
* Check to make certain the DEVSEL is set correctly, this device
- * has a tendancy to assert DEVSEL and TRDY when a write is performed
+ * has a tendency to assert DEVSEL and TRDY when a write is performed
* to the memory when memory is read-only
*/
if ((cmd & PCI_STATUS_DEVSEL_MASK) != 0x0) {
@@ -563,10 +560,10 @@ static u32 fixup_pmc551(struct pci_dev *dev)
/*
* Some screen fun
*/
- printk(KERN_DEBUG "pmc551: %d%c (0x%x) of %sprefetchable memory at "
+ printk(KERN_DEBUG "pmc551: %d%sB (0x%x) of %sprefetchable memory at "
"0x%llx\n", (size < 1024) ? size : (size < 1048576) ?
size >> 10 : size >> 20,
- (size < 1024) ? 'B' : (size < 1048576) ? 'K' : 'M', size,
+ (size < 1024) ? "" : (size < 1048576) ? "Ki" : "Mi", size,
((dcmd & (0x1 << 3)) == 0) ? "non-" : "",
(unsigned long long)pci_resource_start(dev, 0));
@@ -650,14 +647,10 @@ MODULE_DESCRIPTION(PMC551_VERSION);
* Stuff these outside the ifdef so as to not bust compiled in driver support
*/
static int msize = 0;
-#if defined(CONFIG_MTD_PMC551_APERTURE_SIZE)
-static int asize = CONFIG_MTD_PMC551_APERTURE_SIZE
-#else
static int asize = 0;
-#endif
module_param(msize, int, 0);
-MODULE_PARM_DESC(msize, "memory size in Megabytes [1 - 1024]");
+MODULE_PARM_DESC(msize, "memory size in MiB [1 - 1024]");
module_param(asize, int, 0);
MODULE_PARM_DESC(asize, "aperture size, must be <= memsize [1-1024]");
@@ -668,9 +661,9 @@ static int __init init_pmc551(void)
{
struct pci_dev *PCI_Device = NULL;
struct mypriv *priv;
- int count, found = 0;
+ int found = 0;
struct mtd_info *mtd;
- u32 length = 0;
+ int length = 0;
if (msize) {
msize = (1 << (ffs(msize) - 1)) << 20;
@@ -695,7 +688,7 @@ static int __init init_pmc551(void)
/*
* PCU-bus chipset probe.
*/
- for (count = 0; count < MAX_MTD_DEVICES; count++) {
+ for (;;) {
if ((PCI_Device = pci_get_device(PCI_VENDOR_ID_V3_SEMI,
PCI_DEVICE_ID_V3_SEMI_V370PDC,
@@ -732,16 +725,11 @@ static int __init init_pmc551(void)
}
mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL);
- if (!mtd) {
- printk(KERN_NOTICE "pmc551: Cannot allocate new MTD "
- "device.\n");
+ if (!mtd)
break;
- }
priv = kzalloc(sizeof(struct mypriv), GFP_KERNEL);
if (!priv) {
- printk(KERN_NOTICE "pmc551: Cannot allocate new MTD "
- "device.\n");
kfree(mtd);
break;
}
@@ -788,37 +776,36 @@ static int __init init_pmc551(void)
mtd->size = msize;
mtd->flags = MTD_CAP_RAM;
- mtd->erase = pmc551_erase;
- mtd->read = pmc551_read;
- mtd->write = pmc551_write;
- mtd->point = pmc551_point;
- mtd->unpoint = pmc551_unpoint;
+ mtd->_erase = pmc551_erase;
+ mtd->_read = pmc551_read;
+ mtd->_write = pmc551_write;
+ mtd->_point = pmc551_point;
+ mtd->_unpoint = pmc551_unpoint;
mtd->type = MTD_RAM;
mtd->name = "PMC551 RAM board";
mtd->erasesize = 0x10000;
mtd->writesize = 1;
mtd->owner = THIS_MODULE;
- if (add_mtd_device(mtd)) {
- printk(KERN_NOTICE "pmc551: Failed to register new "
- "device\n");
+ if (mtd_device_register(mtd, NULL, 0)) {
+ printk(KERN_NOTICE "pmc551: Failed to register new device\n");
pci_iounmap(PCI_Device, priv->start);
kfree(mtd->priv);
kfree(mtd);
break;
}
- /* Keep a reference as the add_mtd_device worked */
+ /* Keep a reference as the mtd_device_register worked */
pci_dev_get(PCI_Device);
printk(KERN_NOTICE "Registered pmc551 memory device.\n");
- printk(KERN_NOTICE "Mapped %dM of memory from 0x%p to 0x%p\n",
+ printk(KERN_NOTICE "Mapped %dMiB of memory from 0x%p to 0x%p\n",
priv->asize >> 20,
priv->start, priv->start + priv->asize);
- printk(KERN_NOTICE "Total memory is %d%c\n",
+ printk(KERN_NOTICE "Total memory is %d%sB\n",
(length < 1024) ? length :
(length < 1048576) ? length >> 10 : length >> 20,
- (length < 1024) ? 'B' : (length < 1048576) ? 'K' : 'M');
+ (length < 1024) ? "" : (length < 1048576) ? "Ki" : "Mi");
priv->nextpmc551 = pmc551list;
pmc551list = mtd;
found++;
@@ -851,14 +838,14 @@ static void __exit cleanup_pmc551(void)
pmc551list = priv->nextpmc551;
if (priv->start) {
- printk(KERN_DEBUG "pmc551: unmapping %dM starting at "
+ printk(KERN_DEBUG "pmc551: unmapping %dMiB starting at "
"0x%p\n", priv->asize >> 20, priv->start);
pci_iounmap(priv->dev, priv->start);
}
pci_dev_put(priv->dev);
kfree(mtd->priv);
- del_mtd_device(mtd);
+ mtd_device_unregister(mtd);
kfree(mtd);
found++;
}
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