aboutsummaryrefslogtreecommitdiff
path: root/drivers/mtd/devices/pmc551.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/devices/pmc551.c')
-rw-r--r--drivers/mtd/devices/pmc551.c117
1 files changed, 53 insertions, 64 deletions
diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c
index ef0aba0ce58..f02603e1bfe 100644
--- a/drivers/mtd/devices/pmc551.c
+++ b/drivers/mtd/devices/pmc551.c
@@ -93,14 +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>
+
+#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;
@@ -116,16 +151,6 @@ 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);
@@ -179,18 +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;
- }
-
- /* can we return a physical address with this driver? */
- if (phys)
- return -EINVAL;
-
soff_hi = from & ~(priv->asize - 1);
soff_lo = from & (priv->asize - 1);
@@ -206,11 +219,12 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
return 0;
}
-static void pmc551_unpoint(struct mtd_info *mtd, 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,
@@ -229,16 +243,6 @@ 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);
@@ -296,16 +300,6 @@ 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);
@@ -351,7 +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
@@ -359,7 +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;
@@ -540,7 +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) {
@@ -669,7 +663,7 @@ static int __init init_pmc551(void)
struct mypriv *priv;
int found = 0;
struct mtd_info *mtd;
- u32 length = 0;
+ int length = 0;
if (msize) {
msize = (1 << (ffs(msize) - 1)) << 20;
@@ -731,16 +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;
}
@@ -787,18 +776,18 @@ 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)) {
+ 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);
@@ -806,7 +795,7 @@ static int __init init_pmc551(void)
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");
@@ -856,7 +845,7 @@ static void __exit cleanup_pmc551(void)
pci_dev_put(priv->dev);
kfree(mtd->priv);
- del_mtd_device(mtd);
+ mtd_device_unregister(mtd);
kfree(mtd);
found++;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 19:08:23 +0000