* PMC551 PCI Mezzanine Ram Device
*
* Author:
- * Mark Ferrell <mferrell@mvista.com>
- * Copyright 1999,2000 Nortel Networks
+ * Mark Ferrell <mferrell@mvista.com>
+ * Copyright 1999,2000 Nortel Networks
*
* License:
- * As part of this driver was derived from the slram.c driver it
- * falls under the same license, which is GNU General Public
- * License v2
+ * As part of this driver was derived from the slram.c driver it
+ * falls under the same license, which is GNU General Public
+ * License v2
*
* Description:
- * This driver is intended to support the PMC551 PCI Ram device
- * from Ramix Inc. The PMC551 is a PMC Mezzanine module for
- * cPCI embedded systems. The device contains a single SROM
- * that initially programs the V370PDC chipset onboard the
- * device, and various banks of DRAM/SDRAM onboard. This driver
- * implements this PCI Ram device as an MTD (Memory Technology
- * Device) so that it can be used to hold a file system, or for
- * added swap space in embedded systems. Since the memory on
- * this board isn't as fast as main memory we do not try to hook
- * it into main memory as that would simply reduce performance
- * on the system. Using it as a block device allows us to use
- * it as high speed swap or for a high speed disk device of some
- * sort. Which becomes very useful on diskless systems in the
- * embedded market I might add.
+ * This driver is intended to support the PMC551 PCI Ram device
+ * from Ramix Inc. The PMC551 is a PMC Mezzanine module for
+ * cPCI embedded systems. The device contains a single SROM
+ * that initially programs the V370PDC chipset onboard the
+ * device, and various banks of DRAM/SDRAM onboard. This driver
+ * implements this PCI Ram device as an MTD (Memory Technology
+ * Device) so that it can be used to hold a file system, or for
+ * added swap space in embedded systems. Since the memory on
+ * this board isn't as fast as main memory we do not try to hook
+ * it into main memory as that would simply reduce performance
+ * on the system. Using it as a block device allows us to use
+ * it as high speed swap or for a high speed disk device of some
+ * sort. Which becomes very useful on diskless systems in the
+ * embedded market I might add.
*
* 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).
- * 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
- * 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
- * option to allow the specification of the onboard memory, and
- * an asize option, to allow the specification of the aperture
- * size. The aperture must be equal to or less then the memory
- * size, the driver will correct this if you screw it up. This
- * problem is not relevant for compiled in drivers as compiled
- * in drivers only init once.
+ * 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).
+ * 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
+ * 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
+ * option to allow the specification of the onboard memory, and
+ * an asize option, to allow the specification of the aperture
+ * size. The aperture must be equal to or less then the memory
+ * size, the driver will correct this if you screw it up. This
+ * problem is not relevant for compiled in drivers as compiled
+ * in drivers only init once.
*
* Credits:
- * Saeed Karamooz <saeed@ramix.com> of Ramix INC. for the
- * initial example code of how to initialize this device and for
- * help with questions I had concerning operation of the device.
+ * Saeed Karamooz <saeed@ramix.com> of Ramix INC. for the
+ * initial example code of how to initialize this device and for
+ * help with questions I had concerning operation of the device.
*
- * Most of the MTD code for this driver was originally written
- * for the slram.o module in the MTD drivers package which
- * allows the mapping of system memory into an MTD device.
- * Since the PMC551 memory module is accessed in the same
- * fashion as system memory, the slram.c code became a very nice
- * fit to the needs of this driver. All we added was PCI
- * detection/initialization to the driver and automatically figure
- * out the size via the PCI detection.o, later changes by Corey
- * Minyard set up the card to utilize a 1M sliding apature.
+ * Most of the MTD code for this driver was originally written
+ * for the slram.o module in the MTD drivers package which
+ * allows the mapping of system memory into an MTD device.
+ * Since the PMC551 memory module is accessed in the same
+ * fashion as system memory, the slram.c code became a very nice
+ * fit to the needs of this driver. All we added was PCI
+ * detection/initialization to the driver and automatically figure
+ * out the size via the PCI detection.o, later changes by Corey
+ * Minyard set up the card to utilize a 1M sliding apature.
*
- * Corey Minyard <minyard@nortelnetworks.com>
- * * Modified driver to utilize a sliding aperture instead of
- * mapping all memory into kernel space which turned out to
- * be very wasteful.
- * * Located a bug in the SROM's initialization sequence that
- * made the memory unusable, added a fix to code to touch up
- * the DRAM some.
+ * Corey Minyard <minyard@nortelnetworks.com>
+ * * Modified driver to utilize a sliding aperture instead of
+ * mapping all memory into kernel space which turned out to
+ * be very wasteful.
+ * * Located a bug in the SROM's initialization sequence that
+ * made the memory unusable, added a fix to code to touch up
+ * the DRAM some.
*
* Bugs/FIXME's:
- * * 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
- * cause the system to hang w/ a reboot being the only chance at
- * recover. [sort of fixed, could be better]
- * * Add I2C handling of the SROM so we can read the SROM's information
- * about the aperture size. This should always accurately reflect the
- * onboard memory size.
- * * Comb the init routine. It's still a bit cludgy on a few things.
+ * * 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
+ * cause the system to hang w/ a reboot being the only chance at
+ * recover. [sort of fixed, could be better]
+ * * Add I2C handling of the SROM so we can read the SROM's information
+ * about the aperture size. This should always accurately reflect the
+ * onboard memory size.
+ * * Comb the init routine. It's still a bit cludgy on a few things.
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <linux/pci.h>
-#ifndef CONFIG_PCI
-#error Enable PCI in your kernel config
-#endif
-
#include <linux/mtd/mtd.h>
#include <linux/mtd/pmc551.h>
#include <linux/mtd/compatmac.h>
static struct mtd_info *pmc551list;
-static int pmc551_erase (struct mtd_info *mtd, struct erase_info *instr)
+static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
{
- struct mypriv *priv = mtd->priv;
- u32 soff_hi, soff_lo; /* start address offset hi/lo */
- u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
- unsigned long end;
+ struct mypriv *priv = mtd->priv;
+ u32 soff_hi, soff_lo; /* start address offset hi/lo */
+ u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
+ unsigned long end;
u_char *ptr;
size_t retlen;
#ifdef CONFIG_MTD_PMC551_DEBUG
- printk(KERN_DEBUG "pmc551_erase(pos:%ld, len:%ld)\n", (long)instr->addr, (long)instr->len);
+ printk(KERN_DEBUG "pmc551_erase(pos:%ld, len:%ld)\n", (long)instr->addr,
+ (long)instr->len);
#endif
- end = instr->addr + instr->len - 1;
+ end = instr->addr + instr->len - 1;
- /* Is it past the end? */
- if ( end > mtd->size ) {
+ /* 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);
+ 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);
-
- if ( soff_hi == eoff_hi || mtd->size == priv->asize) {
- /* The whole thing fits within one access, so just one shot
- will do it. */
- memset(ptr, 0xff, instr->len);
- } else {
- /* We have to do multiple writes to get all the data
- written. */
- while (soff_hi != eoff_hi) {
+ 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);
+
+ if (soff_hi == eoff_hi || mtd->size == priv->asize) {
+ /* The whole thing fits within one access, so just one shot
+ will do it. */
+ memset(ptr, 0xff, instr->len);
+ } else {
+ /* We have to do multiple writes to get all the data
+ written. */
+ while (soff_hi != eoff_hi) {
#ifdef CONFIG_MTD_PMC551_DEBUG
- printk( KERN_DEBUG "pmc551_erase() soff_hi: %ld, eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi);
+ printk(KERN_DEBUG "pmc551_erase() soff_hi: %ld, "
+ "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi);
#endif
- memset(ptr, 0xff, priv->asize);
- if (soff_hi + priv->asize >= mtd->size) {
- goto out;
- }
- soff_hi += priv->asize;
- pmc551_point (mtd,(priv->base_map0|soff_hi),
- priv->asize, &retlen, &ptr);
- }
- memset (ptr, 0xff, eoff_lo);
- }
-
-out:
+ memset(ptr, 0xff, priv->asize);
+ if (soff_hi + priv->asize >= mtd->size) {
+ goto out;
+ }
+ soff_hi += priv->asize;
+ pmc551_point(mtd, (priv->base_map0 | soff_hi),
+ priv->asize, &retlen, &ptr);
+ }
+ memset(ptr, 0xff, eoff_lo);
+ }
+
+ out:
instr->state = MTD_ERASE_DONE;
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_erase() done\n");
#endif
- mtd_erase_callback(instr);
- return 0;
+ mtd_erase_callback(instr);
+ return 0;
}
-
-static int pmc551_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf)
+static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t * retlen, u_char ** mtdbuf)
{
- struct mypriv *priv = mtd->priv;
- u32 soff_hi;
- u32 soff_lo;
+ struct mypriv *priv = mtd->priv;
+ u32 soff_hi;
+ u32 soff_lo;
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_point(%ld, %ld)\n", (long)from, (long)len);
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);
+ 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);
+ soff_hi = from & ~(priv->asize - 1);
+ soff_lo = from & (priv->asize - 1);
/* Cheap hack optimization */
- if( priv->curr_map0 != from ) {
- pci_write_config_dword ( priv->dev, PMC551_PCI_MEM_MAP0,
- (priv->base_map0 | soff_hi) );
+ if (priv->curr_map0 != from) {
+ pci_write_config_dword(priv->dev, PMC551_PCI_MEM_MAP0,
+ (priv->base_map0 | soff_hi));
priv->curr_map0 = soff_hi;
}
return 0;
}
-
-static void pmc551_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
+static void pmc551_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from,
+ size_t len)
{
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_unpoint()\n");
#endif
}
-
-static int pmc551_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
+static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t * retlen, u_char * buf)
{
- struct mypriv *priv = mtd->priv;
- u32 soff_hi, soff_lo; /* start address offset hi/lo */
- u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
- unsigned long end;
+ struct mypriv *priv = mtd->priv;
+ u32 soff_hi, soff_lo; /* start address offset hi/lo */
+ u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
+ unsigned long end;
u_char *ptr;
- u_char *copyto = buf;
+ u_char *copyto = buf;
#ifdef CONFIG_MTD_PMC551_DEBUG
- printk(KERN_DEBUG "pmc551_read(pos:%ld, len:%ld) asize: %ld\n", (long)from, (long)len, (long)priv->asize);
+ printk(KERN_DEBUG "pmc551_read(pos:%ld, len:%ld) asize: %ld\n",
+ (long)from, (long)len, (long)priv->asize);
#endif
- end = from + len - 1;
+ end = from + len - 1;
- /* Is it past the end? */
- if (end > mtd->size) {
+ /* 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);
+ 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);
-
- if (soff_hi == eoff_hi) {
- /* The whole thing fits within one access, so just one shot
- will do it. */
- memcpy(copyto, ptr, len);
- copyto += len;
- } else {
- /* We have to do multiple writes to get all the data
- written. */
- while (soff_hi != eoff_hi) {
+ 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);
+
+ if (soff_hi == eoff_hi) {
+ /* The whole thing fits within one access, so just one shot
+ will do it. */
+ memcpy(copyto, ptr, len);
+ copyto += len;
+ } else {
+ /* We have to do multiple writes to get all the data
+ written. */
+ while (soff_hi != eoff_hi) {
#ifdef CONFIG_MTD_PMC551_DEBUG
- printk( KERN_DEBUG "pmc551_read() soff_hi: %ld, eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi);
+ printk(KERN_DEBUG "pmc551_read() soff_hi: %ld, "
+ "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi);
#endif
- memcpy(copyto, ptr, priv->asize);
- copyto += priv->asize;
- if (soff_hi + priv->asize >= mtd->size) {
- goto out;
- }
- soff_hi += priv->asize;
- pmc551_point (mtd, soff_hi, priv->asize, retlen, &ptr);
- }
- memcpy(copyto, ptr, eoff_lo);
- copyto += eoff_lo;
- }
-
-out:
+ memcpy(copyto, ptr, priv->asize);
+ copyto += priv->asize;
+ if (soff_hi + priv->asize >= mtd->size) {
+ goto out;
+ }
+ soff_hi += priv->asize;
+ pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr);
+ }
+ memcpy(copyto, ptr, eoff_lo);
+ copyto += eoff_lo;
+ }
+
+ out:
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_read() done\n");
#endif
- *retlen = copyto - buf;
- return 0;
+ *retlen = copyto - buf;
+ return 0;
}
-static int pmc551_write (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
+static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t * retlen, const u_char * buf)
{
- struct mypriv *priv = mtd->priv;
- u32 soff_hi, soff_lo; /* start address offset hi/lo */
- u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
- unsigned long end;
+ struct mypriv *priv = mtd->priv;
+ u32 soff_hi, soff_lo; /* start address offset hi/lo */
+ u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
+ unsigned long end;
u_char *ptr;
- const u_char *copyfrom = buf;
-
+ const u_char *copyfrom = buf;
#ifdef CONFIG_MTD_PMC551_DEBUG
- printk(KERN_DEBUG "pmc551_write(pos:%ld, len:%ld) asize:%ld\n", (long)to, (long)len, (long)priv->asize);
+ printk(KERN_DEBUG "pmc551_write(pos:%ld, len:%ld) asize:%ld\n",
+ (long)to, (long)len, (long)priv->asize);
#endif
- end = to + len - 1;
- /* Is it past the end? or did the u32 wrap? */
- if (end > mtd->size ) {
+ 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);
+ 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);
-
- if (soff_hi == eoff_hi) {
- /* The whole thing fits within one access, so just one shot
- will do it. */
- memcpy(ptr, copyfrom, len);
- copyfrom += len;
- } else {
- /* We have to do multiple writes to get all the data
- written. */
- while (soff_hi != eoff_hi) {
+ 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);
+
+ if (soff_hi == eoff_hi) {
+ /* The whole thing fits within one access, so just one shot
+ will do it. */
+ memcpy(ptr, copyfrom, len);
+ copyfrom += len;
+ } else {
+ /* We have to do multiple writes to get all the data
+ written. */
+ while (soff_hi != eoff_hi) {
#ifdef CONFIG_MTD_PMC551_DEBUG
- printk( KERN_DEBUG "pmc551_write() soff_hi: %ld, eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi);
+ printk(KERN_DEBUG "pmc551_write() soff_hi: %ld, "
+ "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi);
#endif
- memcpy(ptr, copyfrom, priv->asize);
- copyfrom += priv->asize;
- if (soff_hi >= mtd->size) {
- goto out;
- }
- soff_hi += priv->asize;
- pmc551_point (mtd, soff_hi, priv->asize, retlen, &ptr);
- }
- memcpy(ptr, copyfrom, eoff_lo);
- copyfrom += eoff_lo;
- }
-
-out:
+ memcpy(ptr, copyfrom, priv->asize);
+ copyfrom += priv->asize;
+ if (soff_hi >= mtd->size) {
+ goto out;
+ }
+ soff_hi += priv->asize;
+ pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr);
+ }
+ memcpy(ptr, copyfrom, eoff_lo);
+ copyfrom += eoff_lo;
+ }
+
+ out:
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_write() done\n");
#endif
- *retlen = copyfrom - buf;
- return 0;
+ *retlen = copyfrom - buf;
+ return 0;
}
/*
* mechanism
* returns the size of the memory region found.
*/
-static u32 fixup_pmc551 (struct pci_dev *dev)
+static u32 fixup_pmc551(struct pci_dev *dev)
{
#ifdef CONFIG_MTD_PMC551_BUGFIX
- u32 dram_data;
+ u32 dram_data;
#endif
- u32 size, dcmd, cfg, dtmp;
- u16 cmd, tmp, i;
+ u32 size, dcmd, cfg, dtmp;
+ u16 cmd, tmp, i;
u8 bcmd, counter;
- /* Sanity Check */
- if(!dev) {
- return -ENODEV;
- }
+ /* Sanity Check */
+ if (!dev) {
+ return -ENODEV;
+ }
/*
* Attempt to reset the card
* FIXME: Stop Spinning registers
*/
- counter=0;
+ counter = 0;
/* unlock registers */
- pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, 0xA5 );
+ pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, 0xA5);
/* read in old data */
- pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd );
+ pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd);
/* bang the reset line up and down for a few */
- for(i=0;i<10;i++) {
- counter=0;
+ for (i = 0; i < 10; i++) {
+ counter = 0;
bcmd &= ~0x80;
- while(counter++ < 100) {
+ while (counter++ < 100) {
pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd);
}
- counter=0;
+ counter = 0;
bcmd |= 0x80;
- while(counter++ < 100) {
+ while (counter++ < 100) {
pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd);
}
}
- bcmd |= (0x40|0x20);
+ bcmd |= (0x40 | 0x20);
pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd);
- /*
+ /*
* Take care and turn off the memory on the device while we
* tweak the configurations
*/
- pci_read_config_word(dev, PCI_COMMAND, &cmd);
- tmp = cmd & ~(PCI_COMMAND_IO|PCI_COMMAND_MEMORY);
- pci_write_config_word(dev, PCI_COMMAND, tmp);
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ tmp = cmd & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
+ pci_write_config_word(dev, PCI_COMMAND, tmp);
/*
* Disable existing aperture before probing memory size
*/
pci_read_config_dword(dev, PMC551_PCI_MEM_MAP0, &dcmd);
- dtmp=(dcmd|PMC551_PCI_MEM_MAP_ENABLE|PMC551_PCI_MEM_MAP_REG_EN);
+ dtmp = (dcmd | PMC551_PCI_MEM_MAP_ENABLE | PMC551_PCI_MEM_MAP_REG_EN);
pci_write_config_dword(dev, PMC551_PCI_MEM_MAP0, dtmp);
/*
* Grab old BAR0 config so that we can figure out memory size
* then write all 1's to the memory space, read back the result into
* "size", and then write back all the old config.
*/
- pci_read_config_dword( dev, PCI_BASE_ADDRESS_0, &cfg );
+ pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &cfg);
#ifndef CONFIG_MTD_PMC551_BUGFIX
- pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, ~0 );
- pci_read_config_dword( dev, PCI_BASE_ADDRESS_0, &size );
- size = (size&PCI_BASE_ADDRESS_MEM_MASK);
- size &= ~(size-1);
- pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, cfg );
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, ~0);
+ pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &size);
+ size = (size & PCI_BASE_ADDRESS_MEM_MASK);
+ size &= ~(size - 1);
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, cfg);
#else
- /*
- * Get the size of the memory by reading all the DRAM size values
- * and adding them up.
- *
- * KLUDGE ALERT: the boards we are using have invalid column and
- * row mux values. We fix them here, but this will break other
- * memory configurations.
- */
- pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dram_data);
- size = PMC551_DRAM_BLK_GET_SIZE(dram_data);
- dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5);
- dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
- pci_write_config_dword(dev, PMC551_DRAM_BLK0, dram_data);
-
- pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dram_data);
- size += PMC551_DRAM_BLK_GET_SIZE(dram_data);
- dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5);
- dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
- pci_write_config_dword(dev, PMC551_DRAM_BLK1, dram_data);
-
- pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dram_data);
- size += PMC551_DRAM_BLK_GET_SIZE(dram_data);
- dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5);
- dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
- pci_write_config_dword(dev, PMC551_DRAM_BLK2, dram_data);
-
- pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dram_data);
- size += PMC551_DRAM_BLK_GET_SIZE(dram_data);
- dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5);
- dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
- pci_write_config_dword(dev, PMC551_DRAM_BLK3, dram_data);
-
- /*
- * Oops .. something went wrong
- */
- if( (size &= PCI_BASE_ADDRESS_MEM_MASK) == 0) {
- return -ENODEV;
- }
-#endif /* CONFIG_MTD_PMC551_BUGFIX */
-
- if ((cfg&PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) {
- return -ENODEV;
+ /*
+ * Get the size of the memory by reading all the DRAM size values
+ * and adding them up.
+ *
+ * KLUDGE ALERT: the boards we are using have invalid column and
+ * row mux values. We fix them here, but this will break other
+ * memory configurations.
+ */
+ pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dram_data);
+ size = PMC551_DRAM_BLK_GET_SIZE(dram_data);
+ dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5);
+ dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
+ pci_write_config_dword(dev, PMC551_DRAM_BLK0, dram_data);
+
+ pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dram_data);
+ size += PMC551_DRAM_BLK_GET_SIZE(dram_data);
+ dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5);
+ dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
+ pci_write_config_dword(dev, PMC551_DRAM_BLK1, dram_data);
+
+ pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dram_data);
+ size += PMC551_DRAM_BLK_GET_SIZE(dram_data);
+ dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5);
+ dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
+ pci_write_config_dword(dev, PMC551_DRAM_BLK2, dram_data);
+
+ pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dram_data);
+ size += PMC551_DRAM_BLK_GET_SIZE(dram_data);
+ dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5);
+ dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
+ pci_write_config_dword(dev, PMC551_DRAM_BLK3, dram_data);
+
+ /*
+ * Oops .. something went wrong
+ */
+ if ((size &= PCI_BASE_ADDRESS_MEM_MASK) == 0) {
+ return -ENODEV;
+ }
+#endif /* CONFIG_MTD_PMC551_BUGFIX */
+
+ if ((cfg & PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) {
+ return -ENODEV;
}
- /*
- * Precharge Dram
- */
- pci_write_config_word( dev, PMC551_SDRAM_MA, 0x0400 );
- pci_write_config_word( dev, PMC551_SDRAM_CMD, 0x00bf );
-
- /*
- * Wait until command has gone through
- * FIXME: register spinning issue
- */
- do { pci_read_config_word( dev, PMC551_SDRAM_CMD, &cmd );
- if(counter++ > 100)break;
- } while ( (PCI_COMMAND_IO) & cmd );
-
- /*
+ /*
+ * Precharge Dram
+ */
+ pci_write_config_word(dev, PMC551_SDRAM_MA, 0x0400);
+ pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x00bf);
+
+ /*
+ * Wait until command has gone through
+ * FIXME: register spinning issue
+ */
+ do {
+ pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd);
+ if (counter++ > 100)
+ break;
+ } while ((PCI_COMMAND_IO) & cmd);
+
+ /*
* Turn on auto refresh
* The loop is taken directly from Ramix's example code. I assume that
* this must be held high for some duration of time, but I can find no
* documentation refrencing the reasons why.
- */
- for ( i = 1; i<=8 ; i++) {
- pci_write_config_word (dev, PMC551_SDRAM_CMD, 0x0df);
-
- /*
- * Make certain command has gone through
- * FIXME: register spinning issue
- */
- counter=0;
- do { pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd);
- if(counter++ > 100)break;
- } while ( (PCI_COMMAND_IO) & cmd );
- }
-
- pci_write_config_word ( dev, PMC551_SDRAM_MA, 0x0020);
- pci_write_config_word ( dev, PMC551_SDRAM_CMD, 0x0ff);
-
- /*
- * Wait until command completes
- * FIXME: register spinning issue
- */
- counter=0;
- do { pci_read_config_word ( dev, PMC551_SDRAM_CMD, &cmd);
- if(counter++ > 100)break;
- } while ( (PCI_COMMAND_IO) & cmd );
-
- pci_read_config_dword ( dev, PMC551_DRAM_CFG, &dcmd);
- dcmd |= 0x02000000;
- pci_write_config_dword ( dev, PMC551_DRAM_CFG, dcmd);
-
- /*
- * Check to make certain fast back-to-back, if not
- * then set it so
- */
- pci_read_config_word( dev, PCI_STATUS, &cmd);
- if((cmd&PCI_COMMAND_FAST_BACK) == 0) {
- cmd |= PCI_COMMAND_FAST_BACK;
- pci_write_config_word( dev, PCI_STATUS, cmd);
- }
-
- /*
- * Check to make certain the DEVSEL is set correctly, this device
- * has a tendancy 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) {
- cmd &= ~PCI_STATUS_DEVSEL_MASK;
- pci_write_config_word( dev, PCI_STATUS, cmd );
- }
- /*
- * Set to be prefetchable and put everything back based on old cfg.
+ */
+ for (i = 1; i <= 8; i++) {
+ pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x0df);
+
+ /*
+ * Make certain command has gone through
+ * FIXME: register spinning issue
+ */
+ counter = 0;
+ do {
+ pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd);
+ if (counter++ > 100)
+ break;
+ } while ((PCI_COMMAND_IO) & cmd);
+ }
+
+ pci_write_config_word(dev, PMC551_SDRAM_MA, 0x0020);
+ pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x0ff);
+
+ /*
+ * Wait until command completes
+ * FIXME: register spinning issue
+ */
+ counter = 0;
+ do {
+ pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd);
+ if (counter++ > 100)
+ break;
+ } while ((PCI_COMMAND_IO) & cmd);
+
+ pci_read_config_dword(dev, PMC551_DRAM_CFG, &dcmd);
+ dcmd |= 0x02000000;
+ pci_write_config_dword(dev, PMC551_DRAM_CFG, dcmd);
+
+ /*
+ * Check to make certain fast back-to-back, if not
+ * then set it so
+ */
+ pci_read_config_word(dev, PCI_STATUS, &cmd);
+ if ((cmd & PCI_COMMAND_FAST_BACK) == 0) {
+ cmd |= PCI_COMMAND_FAST_BACK;
+ pci_write_config_word(dev, PCI_STATUS, cmd);
+ }
+
+ /*
+ * Check to make certain the DEVSEL is set correctly, this device
+ * has a tendancy 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) {
+ cmd &= ~PCI_STATUS_DEVSEL_MASK;
+ pci_write_config_word(dev, PCI_STATUS, cmd);
+ }
+ /*
+ * Set to be prefetchable and put everything back based on old cfg.
* it's possible that the reset of the V370PDC nuked the original
* setup
- */
+ */
+ /*
+ cfg |= PCI_BASE_ADDRESS_MEM_PREFETCH;
+ pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, cfg );
+ */
+
/*
- cfg |= PCI_BASE_ADDRESS_MEM_PREFETCH;
- pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, cfg );
- */
-
- /*
- * Turn PCI memory and I/O bus access back on
- */
- pci_write_config_word( dev, PCI_COMMAND,
- PCI_COMMAND_MEMORY | PCI_COMMAND_IO );
+ * Turn PCI memory and I/O bus access back on
+ */
+ pci_write_config_word(dev, PCI_COMMAND,
+ PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
#ifdef CONFIG_MTD_PMC551_DEBUG
- /*
- * Some screen fun
- */
- printk(KERN_DEBUG "pmc551: %d%c (0x%x) of %sprefetchable memory at 0x%lx\n",
- (size<1024)?size:(size<1048576)?size>>10:size>>20,
- (size<1024)?'B':(size<1048576)?'K':'M',
- size, ((dcmd&(0x1<<3)) == 0)?"non-":"",
- (dev->resource[0].start)&PCI_BASE_ADDRESS_MEM_MASK );
-
- /*
- * Check to see the state of the memory
- */
- pci_read_config_dword( dev, PMC551_DRAM_BLK0, &dcmd );
- printk(KERN_DEBUG "pmc551: DRAM_BLK0 Flags: %s,%s\n"
- "pmc551: DRAM_BLK0 Size: %d at %d\n"
- "pmc551: DRAM_BLK0 Row MUX: %d, Col MUX: %d\n",
- (((0x1<<1)&dcmd) == 0)?"RW":"RO",
- (((0x1<<0)&dcmd) == 0)?"Off":"On",
- PMC551_DRAM_BLK_GET_SIZE(dcmd),
- ((dcmd>>20)&0x7FF), ((dcmd>>13)&0x7), ((dcmd>>9)&0xF) );
-
- pci_read_config_dword( dev, PMC551_DRAM_BLK1, &dcmd );
- printk(KERN_DEBUG "pmc551: DRAM_BLK1 Flags: %s,%s\n"
- "pmc551: DRAM_BLK1 Size: %d at %d\n"
- "pmc551: DRAM_BLK1 Row MUX: %d, Col MUX: %d\n",
- (((0x1<<1)&dcmd) == 0)?"RW":"RO",
- (((0x1<<0)&dcmd) == 0)?"Off":"On",
- PMC551_DRAM_BLK_GET_SIZE(dcmd),
- ((dcmd>>20)&0x7FF), ((dcmd>>13)&0x7), ((dcmd>>9)&0xF) );
-
- pci_read_config_dword( dev, PMC551_DRAM_BLK2, &dcmd );
- printk(KERN_DEBUG "pmc551: DRAM_BLK2 Flags: %s,%s\n"
- "pmc551: DRAM_BLK2 Size: %d at %d\n"
- "pmc551: DRAM_BLK2 Row MUX: %d, Col MUX: %d\n",
- (((0x1<<1)&dcmd) == 0)?"RW":"RO",
- (((0x1<<0)&dcmd) == 0)?"Off":"On",
- PMC551_DRAM_BLK_GET_SIZE(dcmd),
- ((dcmd>>20)&0x7FF), ((dcmd>>13)&0x7), ((dcmd>>9)&0xF) );
-
- pci_read_config_dword( dev, PMC551_DRAM_BLK3, &dcmd );
- printk(KERN_DEBUG "pmc551: DRAM_BLK3 Flags: %s,%s\n"
- "pmc551: DRAM_BLK3 Size: %d at %d\n"
- "pmc551: DRAM_BLK3 Row MUX: %d, Col MUX: %d\n",
- (((0x1<<1)&dcmd) == 0)?"RW":"RO",
- (((0x1<<0)&dcmd) == 0)?"Off":"On",
- PMC551_DRAM_BLK_GET_SIZE(dcmd),
- ((dcmd>>20)&0x7FF), ((dcmd>>13)&0x7), ((dcmd>>9)&0xF) );
-
- pci_read_config_word( dev, PCI_COMMAND, &cmd );
- printk( KERN_DEBUG "pmc551: Memory Access %s\n",
- (((0x1<<1)&cmd) == 0)?"off":"on" );
- printk( KERN_DEBUG "pmc551: I/O Access %s\n",
- (((0x1<<0)&cmd) == 0)?"off":"on" );
-
- pci_read_config_word( dev, PCI_STATUS, &cmd );
- printk( KERN_DEBUG "pmc551: Devsel %s\n",
- ((PCI_STATUS_DEVSEL_MASK&cmd)==0x000)?"Fast":
- ((PCI_STATUS_DEVSEL_MASK&cmd)==0x200)?"Medium":
- ((PCI_STATUS_DEVSEL_MASK&cmd)==0x400)?"Slow":"Invalid" );
-
- printk( KERN_DEBUG "pmc551: %sFast Back-to-Back\n",
- ((PCI_COMMAND_FAST_BACK&cmd) == 0)?"Not ":"" );
-
- pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd );
- printk( KERN_DEBUG "pmc551: EEPROM is under %s control\n"
- "pmc551: System Control Register is %slocked to PCI access\n"
- "pmc551: System Control Register is %slocked to EEPROM access\n",
- (bcmd&0x1)?"software":"hardware",
- (bcmd&0x20)?"":"un", (bcmd&0x40)?"":"un");
+ /*
+ * Some screen fun
+ */
+ printk(KERN_DEBUG "pmc551: %d%c (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,
+ ((dcmd & (0x1 << 3)) == 0) ? "non-" : "",
+ (unsigned long long)pci_resource_start(dev, 0));
+
+ /*
+ * Check to see the state of the memory
+ */
+ pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dcmd);
+ printk(KERN_DEBUG "pmc551: DRAM_BLK0 Flags: %s,%s\n"
+ "pmc551: DRAM_BLK0 Size: %d at %d\n"
+ "pmc551: DRAM_BLK0 Row MUX: %d, Col MUX: %d\n",
+ (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO",
+ (((0x1 << 0) & dcmd) == 0) ? "Off" : "On",
+ PMC551_DRAM_BLK_GET_SIZE(dcmd),
+ ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7),
+ ((dcmd >> 9) & 0xF));
+
+ pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dcmd);
+ printk(KERN_DEBUG "pmc551: DRAM_BLK1 Flags: %s,%s\n"
+ "pmc551: DRAM_BLK1 Size: %d at %d\n"
+ "pmc551: DRAM_BLK1 Row MUX: %d, Col MUX: %d\n",
+ (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO",
+ (((0x1 << 0) & dcmd) == 0) ? "Off" : "On",
+ PMC551_DRAM_BLK_GET_SIZE(dcmd),
+ ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7),
+ ((dcmd >> 9) & 0xF));
+
+ pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dcmd);
+ printk(KERN_DEBUG "pmc551: DRAM_BLK2 Flags: %s,%s\n"
+ "pmc551: DRAM_BLK2 Size: %d at %d\n"
+ "pmc551: DRAM_BLK2 Row MUX: %d, Col MUX: %d\n",
+ (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO",
+ (((0x1 << 0) & dcmd) == 0) ? "Off" : "On",
+ PMC551_DRAM_BLK_GET_SIZE(dcmd),
+ ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7),
+ ((dcmd >> 9) & 0xF));
+
+ pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dcmd);
+ printk(KERN_DEBUG "pmc551: DRAM_BLK3 Flags: %s,%s\n"
+ "pmc551: DRAM_BLK3 Size: %d at %d\n"
+ "pmc551: DRAM_BLK3 Row MUX: %d, Col MUX: %d\n",
+ (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO",
+ (((0x1 << 0) & dcmd) == 0) ? "Off" : "On",
+ PMC551_DRAM_BLK_GET_SIZE(dcmd),
+ ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7),
+ ((dcmd >> 9) & 0xF));
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ printk(KERN_DEBUG "pmc551: Memory Access %s\n",
+ (((0x1 << 1) & cmd) == 0) ? "off" : "on");
+ printk(KERN_DEBUG "pmc551: I/O Access %s\n",
+ (((0x1 << 0) & cmd) == 0) ? "off" : "on");
+
+ pci_read_config_word(dev, PCI_STATUS, &cmd);
+ printk(KERN_DEBUG "pmc551: Devsel %s\n",
+ ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x000) ? "Fast" :
+ ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x200) ? "Medium" :
+ ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x400) ? "Slow" : "Invalid");
+
+ printk(KERN_DEBUG "pmc551: %sFast Back-to-Back\n",
+ ((PCI_COMMAND_FAST_BACK & cmd) == 0) ? "Not " : "");
+
+ pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd);
+ printk(KERN_DEBUG "pmc551: EEPROM is under %s control\n"
+ "pmc551: System Control Register is %slocked to PCI access\n"
+ "pmc551: System Control Register is %slocked to EEPROM access\n",
+ (bcmd & 0x1) ? "software" : "hardware",
+ (bcmd & 0x20) ? "" : "un", (bcmd & 0x40) ? "" : "un");
#endif
- return size;
+ return size;
}
/*
* Kernel version specific module stuffages
*/
-
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Ferrell <mferrell@mvista.com>");
MODULE_DESCRIPTION(PMC551_VERSION);
/*
* Stuff these outside the ifdef so as to not bust compiled in driver support
*/
-static int msize=0;
+static int msize = 0;
#if defined(CONFIG_MTD_PMC551_APERTURE_SIZE)
-static int asize=CONFIG_MTD_PMC551_APERTURE_SIZE
+static int asize = CONFIG_MTD_PMC551_APERTURE_SIZE
#else
-static int asize=0;
+static int asize = 0;
#endif
module_param(msize, int, 0);
*/
static int __init init_pmc551(void)
{
- struct pci_dev *PCI_Device = NULL;
- struct mypriv *priv;
- int count, found=0;
- struct mtd_info *mtd;
- u32 length = 0;
-
- if(msize) {
- msize = (1 << (ffs(msize) - 1))<<20;
- if (msize > (1<<30)) {
- printk(KERN_NOTICE "pmc551: Invalid memory size [%d]\n", msize);
+ struct pci_dev *PCI_Device = NULL;
+ struct mypriv *priv;
+ int count, found = 0;
+ struct mtd_info *mtd;
+ u32 length = 0;
+
+ if (msize) {
+ msize = (1 << (ffs(msize) - 1)) << 20;
+ if (msize > (1 << 30)) {
+ printk(KERN_NOTICE "pmc551: Invalid memory size [%d]\n",
+ msize);
return -EINVAL;
}
}
- if(asize) {
- asize = (1 << (ffs(asize) - 1))<<20;
- if (asize > (1<<30) ) {
- printk(KERN_NOTICE "pmc551: Invalid aperture size [%d]\n", asize);
+ if (asize) {
+ asize = (1 << (ffs(asize) - 1)) << 20;
+ if (asize > (1 << 30)) {
+ printk(KERN_NOTICE "pmc551: Invalid aperture size "
+ "[%d]\n", asize);
return -EINVAL;
}
}
- printk(KERN_INFO PMC551_VERSION);
-
- /*
- * PCU-bus chipset probe.
- */
- for( count = 0; count < MAX_MTD_DEVICES; count++ ) {
-
- if ((PCI_Device = pci_find_device(PCI_VENDOR_ID_V3_SEMI,
- PCI_DEVICE_ID_V3_SEMI_V370PDC,
- PCI_Device ) ) == NULL) {
- break;
- }
-
- printk(KERN_NOTICE "pmc551: Found PCI V370PDC at 0x%lX\n",
- PCI_Device->resource[0].start);
-
- /*
- * The PMC551 device acts VERY weird if you don't init it
- * first. i.e. it will not correctly report devsel. If for
- * some reason the sdram is in a wrote-protected state the
- * device will DEVSEL when it is written to causing problems
- * with the oldproc.c driver in
- * some kernels (2.2.*)
- */
- if((length = fixup_pmc551(PCI_Device)) <= 0) {
- printk(KERN_NOTICE "pmc551: Cannot init SDRAM\n");
- break;
- }
+ printk(KERN_INFO PMC551_VERSION);
+
+ /*
+ * PCU-bus chipset probe.
+ */
+ for (count = 0; count < MAX_MTD_DEVICES; count++) {
+
+ if ((PCI_Device = pci_get_device(PCI_VENDOR_ID_V3_SEMI,
+ PCI_DEVICE_ID_V3_SEMI_V370PDC,
+ PCI_Device)) == NULL) {
+ break;
+ }
+
+ printk(KERN_NOTICE "pmc551: Found PCI V370PDC at 0x%llx\n",
+ (unsigned long long)pci_resource_start(PCI_Device, 0));
+
+ /*
+ * The PMC551 device acts VERY weird if you don't init it
+ * first. i.e. it will not correctly report devsel. If for
+ * some reason the sdram is in a wrote-protected state the
+ * device will DEVSEL when it is written to causing problems
+ * with the oldproc.c driver in
+ * some kernels (2.2.*)
+ */
+ if ((length = fixup_pmc551(PCI_Device)) <= 0) {
+ printk(KERN_NOTICE "pmc551: Cannot init SDRAM\n");
+ break;
+ }
/*
* This is needed until the driver is capable of reading the
* onboard I2C SROM to discover the "real" memory size.
*/
- if(msize) {
+ if (msize) {
length = msize;
- printk(KERN_NOTICE "pmc551: Using specified memory size 0x%x\n", length);
+ printk(KERN_NOTICE "pmc551: Using specified memory "
+ "size 0x%x\n", length);
} else {
msize = length;
}
- mtd = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
- if (!mtd) {
- printk(KERN_NOTICE "pmc551: Cannot allocate new MTD device.\n");
- break;
- }
-
- memset(mtd, 0, sizeof(struct mtd_info));
-
- priv = kmalloc (sizeof(struct mypriv), GFP_KERNEL);
- if (!priv) {
- printk(KERN_NOTICE "pmc551: Cannot allocate new MTD device.\n");
- kfree(mtd);
- break;
- }
- memset(priv, 0, sizeof(*priv));
- mtd->priv = priv;
- priv->dev = PCI_Device;
-
- if(asize > length) {
- printk(KERN_NOTICE "pmc551: reducing aperture size to fit %dM\n",length>>20);
+ mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL);
+ if (!mtd) {
+ printk(KERN_NOTICE "pmc551: Cannot allocate new MTD "
+ "device.\n");
+ break;
+ }
+
+ priv = kzalloc(sizeof(struct mypriv), GFP_KERNEL);
+ if (!priv) {
+ printk(KERN_NOTICE "pmc551: Cannot allocate new MTD "
+ "device.\n");
+ kfree(mtd);
+ break;
+ }
+ mtd->priv = priv;
+ priv->dev = PCI_Device;
+
+ if (asize > length) {
+ printk(KERN_NOTICE "pmc551: reducing aperture size to "
+ "fit %dM\n", length >> 20);
priv->asize = asize = length;
} else if (asize == 0 || asize == length) {
- printk(KERN_NOTICE "pmc551: Using existing aperture size %dM\n", length>>20);
+ printk(KERN_NOTICE "pmc551: Using existing aperture "
+ "size %dM\n", length >> 20);
priv->asize = asize = length;
} else {
- printk(KERN_NOTICE "pmc551: Using specified aperture size %dM\n", asize>>20);
+ printk(KERN_NOTICE "pmc551: Using specified aperture "
+ "size %dM\n", asize >> 20);
priv->asize = asize;
}
- priv->start = ioremap(((PCI_Device->resource[0].start)
- & PCI_BASE_ADDRESS_MEM_MASK),
- priv->asize);
+ priv->start = pci_iomap(PCI_Device, 0, priv->asize);
if (!priv->start) {
printk(KERN_NOTICE "pmc551: Unable to map IO space\n");
- kfree(mtd->priv);
- kfree(mtd);
+ kfree(mtd->priv);
+ kfree(mtd);
break;
}
-
#ifdef CONFIG_MTD_PMC551_DEBUG
- printk( KERN_DEBUG "pmc551: setting aperture to %d\n",
- ffs(priv->asize>>20)-1);
+ printk(KERN_DEBUG "pmc551: setting aperture to %d\n",
+ ffs(priv->asize >> 20) - 1);
#endif
- priv->base_map0 = ( PMC551_PCI_MEM_MAP_REG_EN
- | PMC551_PCI_MEM_MAP_ENABLE
- | (ffs(priv->asize>>20)-1)<<4 );
- priv->curr_map0 = priv->base_map0;
- pci_write_config_dword ( priv->dev, PMC551_PCI_MEM_MAP0,
- priv->curr_map0 );
+ priv->base_map0 = (PMC551_PCI_MEM_MAP_REG_EN
+ | PMC551_PCI_MEM_MAP_ENABLE
+ | (ffs(priv->asize >> 20) - 1) << 4);
+ priv->curr_map0 = priv->base_map0;
+ pci_write_config_dword(priv->dev, PMC551_PCI_MEM_MAP0,
+ priv->curr_map0);
#ifdef CONFIG_MTD_PMC551_DEBUG
- printk( KERN_DEBUG "pmc551: aperture set to %d\n",
- (priv->base_map0 & 0xF0)>>4 );
+ printk(KERN_DEBUG "pmc551: aperture set to %d\n",
+ (priv->base_map0 & 0xF0) >> 4);
#endif
- 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->type = MTD_RAM;
- mtd->name = "PMC551 RAM board";
- mtd->erasesize = 0x10000;
+ 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->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");
- iounmap(priv->start);
- kfree(mtd->priv);
- kfree(mtd);
- break;
- }
- printk(KERN_NOTICE "Registered pmc551 memory device.\n");
- printk(KERN_NOTICE "Mapped %dM 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",
- (length<1024)?length:
- (length<1048576)?length>>10:length>>20,
- (length<1024)?'B':(length<1048576)?'K':'M');
+ if (add_mtd_device(mtd)) {
+ 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 */
+ 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",
+ priv->asize >> 20,
+ priv->start, priv->start + priv->asize);
+ printk(KERN_NOTICE "Total memory is %d%c\n",
+ (length < 1024) ? length :
+ (length < 1048576) ? length >> 10 : length >> 20,
+ (length < 1024) ? 'B' : (length < 1048576) ? 'K' : 'M');
priv->nextpmc551 = pmc551list;
pmc551list = mtd;
found++;
- }
+ }
+
+ /* Exited early, reference left over */
+ if (PCI_Device)
+ pci_dev_put(PCI_Device);
- if( !pmc551list ) {
- printk(KERN_NOTICE "pmc551: not detected\n");
- return -ENODEV;
- } else {
+ if (!pmc551list) {
+ printk(KERN_NOTICE "pmc551: not detected\n");
+ return -ENODEV;
+ } else {
printk(KERN_NOTICE "pmc551: %d pmc551 devices loaded\n", found);
- return 0;
+ return 0;
}
}
*/
static void __exit cleanup_pmc551(void)
{
- int found=0;
- struct mtd_info *mtd;
+ int found = 0;
+ struct mtd_info *mtd;
struct mypriv *priv;
- while((mtd=pmc551list)) {
+ while ((mtd = pmc551list)) {
priv = mtd->priv;
pmc551list = priv->nextpmc551;
- if(priv->start) {
- printk (KERN_DEBUG "pmc551: unmapping %dM starting at 0x%p\n",
- priv->asize>>20, priv->start);
- iounmap (priv->start);
+ if (priv->start) {
+ printk(KERN_DEBUG "pmc551: unmapping %dM 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);
- kfree (mtd);
+ kfree(mtd->priv);
+ del_mtd_device(mtd);
+ kfree(mtd);
found++;
}
git://git.onelab.eu / linux-2.6.git / blobdiff