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Commit cdf0a7d1 authored by Jiri Slaby's avatar Jiri Slaby Committed by David Woodhouse
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[MTD] pmc551 whitespace cleanup 

Spaces were used for indent, there was more than 80 columns per line. Get
rid of that stuff.
Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent e417fcfb
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Showing with 596 additions and 567 deletions
drivers/mtd/devices/pmc551.c
View file @ cdf0a7d1
...@@ -4,82 +4,82 @@ ...@@ -4,82 +4,82 @@
* PMC551 PCI Mezzanine Ram Device * PMC551 PCI Mezzanine Ram Device
* *
* Author: * Author:
* Mark Ferrell <mferrell@mvista.com> * Mark Ferrell <mferrell@mvista.com>
* Copyright 1999,2000 Nortel Networks * Copyright 1999,2000 Nortel Networks
* *
* License: * License:
* As part of this driver was derived from the slram.c driver it * As part of this driver was derived from the slram.c driver it
* falls under the same license, which is GNU General Public * falls under the same license, which is GNU General Public
* License v2 * License v2
* *
* Description: * Description:
* This driver is intended to support the PMC551 PCI Ram device * This driver is intended to support the PMC551 PCI Ram device
* from Ramix Inc. The PMC551 is a PMC Mezzanine module for * from Ramix Inc. The PMC551 is a PMC Mezzanine module for
* cPCI embedded systems. The device contains a single SROM * cPCI embedded systems. The device contains a single SROM
* that initially programs the V370PDC chipset onboard the * that initially programs the V370PDC chipset onboard the
* device, and various banks of DRAM/SDRAM onboard. This driver * device, and various banks of DRAM/SDRAM onboard. This driver
* implements this PCI Ram device as an MTD (Memory Technology * implements this PCI Ram device as an MTD (Memory Technology
* Device) so that it can be used to hold a file system, or for * Device) so that it can be used to hold a file system, or for
* added swap space in embedded systems. Since the memory on * 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 * 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 * it into main memory as that would simply reduce performance
* on the system. Using it as a block device allows us to use * 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 * it as high speed swap or for a high speed disk device of some
* sort. Which becomes very useful on diskless systems in the * sort. Which becomes very useful on diskless systems in the
* embedded market I might add. * embedded market I might add.
* *
* Notes: * Notes:
* Due to what I assume is more buggy SROM, the 64M PMC551 I * 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 * have available claims that all 4 of it's DRAM banks have 64M
* of ram configured (making a grand total of 256M onboard). * of ram configured (making a grand total of 256M onboard).
* This is slightly annoying since the BAR0 size reflects the * This is slightly annoying since the BAR0 size reflects the
* aperture size, not the dram size, and the V370PDC supplies no * aperture size, not the dram size, and the V370PDC supplies no
* other method for memory size discovery. This problem is * other method for memory size discovery. This problem is
* mostly only relevant when compiled as a module, as the * 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 then
* the ram will cause the driver to detect the onboard memory * the ram will cause the driver to detect the onboard memory
* size to be equal to the aperture size when the module is * size to be equal to the aperture size when the module is
* reloaded. Soooo, to help, the module supports an msize * reloaded. Soooo, to help, the module supports an msize
* option to allow the specification of the onboard memory, and * option to allow the specification of the onboard memory, and
* an asize option, to allow the specification of the aperture * an asize option, to allow the specification of the aperture
* size. The aperture must be equal to or less then the memory * size. The aperture must be equal to or less then the memory
* size, the driver will correct this if you screw it up. This * size, the driver will correct this if you screw it up. This
* problem is not relevant for compiled in drivers as compiled * problem is not relevant for compiled in drivers as compiled
* in drivers only init once. * in drivers only init once.
* *
* Credits: * Credits:
* Saeed Karamooz <saeed@ramix.com> of Ramix INC. for the * Saeed Karamooz <saeed@ramix.com> of Ramix INC. for the
* initial example code of how to initialize this device and for * initial example code of how to initialize this device and for
* help with questions I had concerning operation of the device. * help with questions I had concerning operation of the device.
* *
* Most of the MTD code for this driver was originally written * Most of the MTD code for this driver was originally written
* for the slram.o module in the MTD drivers package which * for the slram.o module in the MTD drivers package which
* allows the mapping of system memory into an MTD device. * allows the mapping of system memory into an MTD device.
* Since the PMC551 memory module is accessed in the same * Since the PMC551 memory module is accessed in the same
* fashion as system memory, the slram.c code became a very nice * fashion as system memory, the slram.c code became a very nice
* fit to the needs of this driver. All we added was PCI * fit to the needs of this driver. All we added was PCI
* detection/initialization to the driver and automatically figure * detection/initialization to the driver and automatically figure
* out the size via the PCI detection.o, later changes by Corey * out the size via the PCI detection.o, later changes by Corey
* Minyard set up the card to utilize a 1M sliding apature. * Minyard set up the card to utilize a 1M sliding apature.
* *
* Corey Minyard <minyard@nortelnetworks.com> * Corey Minyard <minyard@nortelnetworks.com>
* * Modified driver to utilize a sliding aperture instead of * * Modified driver to utilize a sliding aperture instead of
* mapping all memory into kernel space which turned out to * mapping all memory into kernel space which turned out to
* be very wasteful. * be very wasteful.
* * Located a bug in the SROM's initialization sequence that * * Located a bug in the SROM's initialization sequence that
* made the memory unusable, added a fix to code to touch up * made the memory unusable, added a fix to code to touch up
* the DRAM some. * the DRAM some.
* *
* Bugs/FIXME's: * Bugs/FIXME's:
* * MUST fix the init function to not spin on a register * * MUST fix the init function to not spin on a register
* waiting for it to set .. this does not safely handle busted * waiting for it to set .. this does not safely handle busted
* devices that never reset the register correctly which will * devices that never reset the register correctly which will
* cause the system to hang w/ a reboot being the only chance at * cause the system to hang w/ a reboot being the only chance at
* recover. [sort of fixed, could be better] * recover. [sort of fixed, could be better]
* * Add I2C handling of the SROM so we can read the SROM's information * * Add I2C handling of the SROM so we can read the SROM's information
* about the aperture size. This should always accurately reflect the * about the aperture size. This should always accurately reflect the
* onboard memory size. * onboard memory size.
* * Comb the init routine. It's still a bit cludgy on a few things. * * Comb the init routine. It's still a bit cludgy on a few things.
*/ */
#include <linux/kernel.h> #include <linux/kernel.h>
...@@ -105,74 +105,77 @@ ...@@ -105,74 +105,77 @@
static struct mtd_info *pmc551list; 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; struct mypriv *priv = mtd->priv;
u32 soff_hi, soff_lo; /* start address offset hi/lo */ u32 soff_hi, soff_lo; /* start address offset hi/lo */
u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
unsigned long end; unsigned long end;
u_char *ptr; u_char *ptr;
size_t retlen; size_t retlen;
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
end = instr->addr + instr->len - 1; end = instr->addr + instr->len - 1;
/* Is it past the end? */ /* Is it past the end? */
if ( end > mtd->size ) { if (end > mtd->size) {
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
return -EINVAL; return -EINVAL;
} }
eoff_hi = end & ~(priv->asize - 1); eoff_hi = end & ~(priv->asize - 1);
soff_hi = instr->addr & ~(priv->asize - 1); soff_hi = instr->addr & ~(priv->asize - 1);
eoff_lo = end & (priv->asize - 1); eoff_lo = end & (priv->asize - 1);
soff_lo = instr->addr & (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, &ptr);
if ( soff_hi == eoff_hi || mtd->size == priv->asize) { if (soff_hi == eoff_hi || mtd->size == priv->asize) {
/* The whole thing fits within one access, so just one shot /* The whole thing fits within one access, so just one shot
will do it. */ will do it. */
memset(ptr, 0xff, instr->len); memset(ptr, 0xff, instr->len);
} else { } else {
/* We have to do multiple writes to get all the data /* We have to do multiple writes to get all the data
written. */ written. */
while (soff_hi != eoff_hi) { while (soff_hi != eoff_hi) {
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
memset(ptr, 0xff, priv->asize); memset(ptr, 0xff, priv->asize);
if (soff_hi + priv->asize >= mtd->size) { if (soff_hi + priv->asize >= mtd->size) {
goto out; goto out;
} }
soff_hi += priv->asize; soff_hi += priv->asize;
pmc551_point (mtd,(priv->base_map0|soff_hi), pmc551_point(mtd, (priv->base_map0 | soff_hi),
priv->asize, &retlen, &ptr); priv->asize, &retlen, &ptr);
} }
memset (ptr, 0xff, eoff_lo); memset(ptr, 0xff, eoff_lo);
} }
out: out:
instr->state = MTD_ERASE_DONE; instr->state = MTD_ERASE_DONE;
#ifdef CONFIG_MTD_PMC551_DEBUG #ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_erase() done\n"); printk(KERN_DEBUG "pmc551_erase() done\n");
#endif #endif
mtd_erase_callback(instr); mtd_erase_callback(instr);
return 0; return 0;
} }
static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
static int pmc551_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf) size_t * retlen, u_char ** mtdbuf)
{ {
struct mypriv *priv = mtd->priv; struct mypriv *priv = mtd->priv;
u32 soff_hi; u32 soff_hi;
u32 soff_lo; u32 soff_lo;
#ifdef CONFIG_MTD_PMC551_DEBUG #ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_point(%ld, %ld)\n", (long)from, (long)len); printk(KERN_DEBUG "pmc551_point(%ld, %ld)\n", (long)from, (long)len);
...@@ -180,18 +183,19 @@ static int pmc551_point (struct mtd_info *mtd, loff_t from, size_t len, size_t * ...@@ -180,18 +183,19 @@ static int pmc551_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *
if (from + len > mtd->size) { if (from + len > mtd->size) {
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
return -EINVAL; return -EINVAL;
} }
soff_hi = from & ~(priv->asize - 1); soff_hi = from & ~(priv->asize - 1);
soff_lo = from & (priv->asize - 1); soff_lo = from & (priv->asize - 1);
/* Cheap hack optimization */ /* Cheap hack optimization */
if( priv->curr_map0 != from ) { if (priv->curr_map0 != from) {
pci_write_config_dword ( priv->dev, PMC551_PCI_MEM_MAP0, pci_write_config_dword(priv->dev, PMC551_PCI_MEM_MAP0,
(priv->base_map0 | soff_hi) ); (priv->base_map0 | soff_hi));
priv->curr_map0 = soff_hi; priv->curr_map0 = soff_hi;
} }
...@@ -200,137 +204,144 @@ static int pmc551_point (struct mtd_info *mtd, loff_t from, size_t len, size_t * ...@@ -200,137 +204,144 @@ static int pmc551_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *
return 0; return 0;
} }
static void pmc551_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from,
static void pmc551_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len) size_t len)
{ {
#ifdef CONFIG_MTD_PMC551_DEBUG #ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_unpoint()\n"); printk(KERN_DEBUG "pmc551_unpoint()\n");
#endif #endif
} }
static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
static int pmc551_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) size_t * retlen, u_char * buf)
{ {
struct mypriv *priv = mtd->priv; struct mypriv *priv = mtd->priv;
u32 soff_hi, soff_lo; /* start address offset hi/lo */ u32 soff_hi, soff_lo; /* start address offset hi/lo */
u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
unsigned long end; unsigned long end;
u_char *ptr; u_char *ptr;
u_char *copyto = buf; u_char *copyto = buf;
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
end = from + len - 1; end = from + len - 1;
/* Is it past the end? */ /* Is it past the end? */
if (end > mtd->size) { if (end > mtd->size) {
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
return -EINVAL; return -EINVAL;
} }
soff_hi = from & ~(priv->asize - 1); soff_hi = from & ~(priv->asize - 1);
eoff_hi = end & ~(priv->asize - 1); eoff_hi = end & ~(priv->asize - 1);
soff_lo = from & (priv->asize - 1); soff_lo = from & (priv->asize - 1);
eoff_lo = end & (priv->asize - 1); eoff_lo = end & (priv->asize - 1);
pmc551_point (mtd, from, len, retlen, &ptr); pmc551_point(mtd, from, len, retlen, &ptr);
if (soff_hi == eoff_hi) { if (soff_hi == eoff_hi) {
/* The whole thing fits within one access, so just one shot /* The whole thing fits within one access, so just one shot
will do it. */ will do it. */
memcpy(copyto, ptr, len); memcpy(copyto, ptr, len);
copyto += len; copyto += len;
} else { } else {
/* We have to do multiple writes to get all the data /* We have to do multiple writes to get all the data
written. */ written. */
while (soff_hi != eoff_hi) { while (soff_hi != eoff_hi) {
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
memcpy(copyto, ptr, priv->asize); memcpy(copyto, ptr, priv->asize);
copyto += priv->asize; copyto += priv->asize;
if (soff_hi + priv->asize >= mtd->size) { if (soff_hi + priv->asize >= mtd->size) {
goto out; goto out;
} }
soff_hi += priv->asize; soff_hi += priv->asize;
pmc551_point (mtd, soff_hi, priv->asize, retlen, &ptr); pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr);
} }
memcpy(copyto, ptr, eoff_lo); memcpy(copyto, ptr, eoff_lo);
copyto += eoff_lo; copyto += eoff_lo;
} }
out: out:
#ifdef CONFIG_MTD_PMC551_DEBUG #ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_read() done\n"); printk(KERN_DEBUG "pmc551_read() done\n");
#endif #endif
*retlen = copyto - buf; *retlen = copyto - buf;
return 0; 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; struct mypriv *priv = mtd->priv;
u32 soff_hi, soff_lo; /* start address offset hi/lo */ u32 soff_hi, soff_lo; /* start address offset hi/lo */
u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ u32 eoff_hi, eoff_lo; /* end address offset hi/lo */
unsigned long end; unsigned long end;
u_char *ptr; u_char *ptr;
const u_char *copyfrom = buf; const u_char *copyfrom = buf;
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
end = to + len - 1; end = to + len - 1;
/* Is it past the end? or did the u32 wrap? */ /* Is it past the end? or did the u32 wrap? */
if (end > mtd->size ) { if (end > mtd->size) {
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
return -EINVAL; return -EINVAL;
} }
soff_hi = to & ~(priv->asize - 1); soff_hi = to & ~(priv->asize - 1);
eoff_hi = end & ~(priv->asize - 1); eoff_hi = end & ~(priv->asize - 1);
soff_lo = to & (priv->asize - 1); soff_lo = to & (priv->asize - 1);
eoff_lo = end & (priv->asize - 1); eoff_lo = end & (priv->asize - 1);
pmc551_point (mtd, to, len, retlen, &ptr); pmc551_point(mtd, to, len, retlen, &ptr);
if (soff_hi == eoff_hi) { if (soff_hi == eoff_hi) {
/* The whole thing fits within one access, so just one shot /* The whole thing fits within one access, so just one shot
will do it. */ will do it. */
memcpy(ptr, copyfrom, len); memcpy(ptr, copyfrom, len);
copyfrom += len; copyfrom += len;
} else { } else {
/* We have to do multiple writes to get all the data /* We have to do multiple writes to get all the data
written. */ written. */
while (soff_hi != eoff_hi) { while (soff_hi != eoff_hi) {
#ifdef CONFIG_MTD_PMC551_DEBUG #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 #endif
memcpy(ptr, copyfrom, priv->asize); memcpy(ptr, copyfrom, priv->asize);
copyfrom += priv->asize; copyfrom += priv->asize;
if (soff_hi >= mtd->size) { if (soff_hi >= mtd->size) {
goto out; goto out;
} }
soff_hi += priv->asize; soff_hi += priv->asize;
pmc551_point (mtd, soff_hi, priv->asize, retlen, &ptr); pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr);
} }
memcpy(ptr, copyfrom, eoff_lo); memcpy(ptr, copyfrom, eoff_lo);
copyfrom += eoff_lo; copyfrom += eoff_lo;
} }
out: out:
#ifdef CONFIG_MTD_PMC551_DEBUG #ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_write() done\n"); printk(KERN_DEBUG "pmc551_write() done\n");
#endif #endif
*retlen = copyfrom - buf; *retlen = copyfrom - buf;
return 0; return 0;
} }
/* /*
...@@ -345,58 +356,58 @@ static int pmc551_write (struct mtd_info *mtd, loff_t to, size_t len, size_t *re ...@@ -345,58 +356,58 @@ static int pmc551_write (struct mtd_info *mtd, loff_t to, size_t len, size_t *re
* mechanism * mechanism
* returns the size of the memory region found. * 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 #ifdef CONFIG_MTD_PMC551_BUGFIX
u32 dram_data; u32 dram_data;
#endif #endif
u32 size, dcmd, cfg, dtmp; u32 size, dcmd, cfg, dtmp;
u16 cmd, tmp, i; u16 cmd, tmp, i;
u8 bcmd, counter; u8 bcmd, counter;
/* Sanity Check */ /* Sanity Check */
if(!dev) { if (!dev) {
return -ENODEV; return -ENODEV;
} }
/* /*
* Attempt to reset the card * Attempt to reset the card
* FIXME: Stop Spinning registers * FIXME: Stop Spinning registers
*/ */
counter=0; counter = 0;
/* unlock registers */ /* 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 */ /* 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 */ /* bang the reset line up and down for a few */
for(i=0;i<10;i++) { for (i = 0; i < 10; i++) {
counter=0; counter = 0;
bcmd &= ~0x80; bcmd &= ~0x80;
while(counter++ < 100) { while (counter++ < 100) {
pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd); pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd);
} }
counter=0; counter = 0;
bcmd |= 0x80; bcmd |= 0x80;
while(counter++ < 100) { while (counter++ < 100) {
pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd); 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); pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd);
/* /*
* Take care and turn off the memory on the device while we * Take care and turn off the memory on the device while we
* tweak the configurations * tweak the configurations
*/ */
pci_read_config_word(dev, PCI_COMMAND, &cmd); pci_read_config_word(dev, PCI_COMMAND, &cmd);
tmp = cmd & ~(PCI_COMMAND_IO|PCI_COMMAND_MEMORY); tmp = cmd & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
pci_write_config_word(dev, PCI_COMMAND, tmp); pci_write_config_word(dev, PCI_COMMAND, tmp);
/* /*
* Disable existing aperture before probing memory size * Disable existing aperture before probing memory size
*/ */
pci_read_config_dword(dev, PMC551_PCI_MEM_MAP0, &dcmd); 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); pci_write_config_dword(dev, PMC551_PCI_MEM_MAP0, dtmp);
/* /*
* Grab old BAR0 config so that we can figure out memory size * Grab old BAR0 config so that we can figure out memory size
...@@ -407,220 +418,231 @@ static u32 fixup_pmc551 (struct pci_dev *dev) ...@@ -407,220 +418,231 @@ static u32 fixup_pmc551 (struct pci_dev *dev)
* then write all 1's to the memory space, read back the result into * then write all 1's to the memory space, read back the result into
* "size", and then write back all the old config. * "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 #ifndef CONFIG_MTD_PMC551_BUGFIX
pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, ~0 ); pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, ~0);
pci_read_config_dword( dev, PCI_BASE_ADDRESS_0, &size ); pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &size);
size = (size&PCI_BASE_ADDRESS_MEM_MASK); size = (size & PCI_BASE_ADDRESS_MEM_MASK);
size &= ~(size-1); size &= ~(size - 1);
pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, cfg ); pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, cfg);
#else #else
/* /*
* Get the size of the memory by reading all the DRAM size values * Get the size of the memory by reading all the DRAM size values
* and adding them up. * and adding them up.
* *
* KLUDGE ALERT: the boards we are using have invalid column and * KLUDGE ALERT: the boards we are using have invalid column and
* row mux values. We fix them here, but this will break other * row mux values. We fix them here, but this will break other
* memory configurations. * memory configurations.
*/ */
pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dram_data); pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dram_data);
size = PMC551_DRAM_BLK_GET_SIZE(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_COL_MUX(dram_data, 0x5);
dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
pci_write_config_dword(dev, PMC551_DRAM_BLK0, dram_data); pci_write_config_dword(dev, PMC551_DRAM_BLK0, dram_data);
pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dram_data); pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dram_data);
size += PMC551_DRAM_BLK_GET_SIZE(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_COL_MUX(dram_data, 0x5);
dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
pci_write_config_dword(dev, PMC551_DRAM_BLK1, dram_data); pci_write_config_dword(dev, PMC551_DRAM_BLK1, dram_data);
pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dram_data); pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dram_data);
size += PMC551_DRAM_BLK_GET_SIZE(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_COL_MUX(dram_data, 0x5);
dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
pci_write_config_dword(dev, PMC551_DRAM_BLK2, dram_data); pci_write_config_dword(dev, PMC551_DRAM_BLK2, dram_data);
pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dram_data); pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dram_data);
size += PMC551_DRAM_BLK_GET_SIZE(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_COL_MUX(dram_data, 0x5);
dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9);
pci_write_config_dword(dev, PMC551_DRAM_BLK3, dram_data); pci_write_config_dword(dev, PMC551_DRAM_BLK3, dram_data);
/* /*
* Oops .. something went wrong * Oops .. something went wrong
*/ */
if( (size &= PCI_BASE_ADDRESS_MEM_MASK) == 0) { if ((size &= PCI_BASE_ADDRESS_MEM_MASK) == 0) {
return -ENODEV; return -ENODEV;
}
#endif /* CONFIG_MTD_PMC551_BUGFIX */
if ((cfg&PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) {
return -ENODEV;
} }
#endif /* CONFIG_MTD_PMC551_BUGFIX */
/* if ((cfg & PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) {
* Precharge Dram return -ENODEV;
*/ }
pci_write_config_word( dev, PMC551_SDRAM_MA, 0x0400 );
pci_write_config_word( dev, PMC551_SDRAM_CMD, 0x00bf ); /*
* Precharge Dram
/* */
* Wait until command has gone through pci_write_config_word(dev, PMC551_SDRAM_MA, 0x0400);
* FIXME: register spinning issue pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x00bf);
*/
do { pci_read_config_word( dev, PMC551_SDRAM_CMD, &cmd ); /*
if(counter++ > 100)break; * Wait until command has gone through
} while ( (PCI_COMMAND_IO) & cmd ); * 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 * Turn on auto refresh
* The loop is taken directly from Ramix's example code. I assume that * 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 * this must be held high for some duration of time, but I can find no
* documentation refrencing the reasons why. * documentation refrencing the reasons why.
*/ */
for ( i = 1; i<=8 ; i++) { for (i = 1; i <= 8; i++) {
pci_write_config_word (dev, PMC551_SDRAM_CMD, 0x0df); pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x0df);
/* /*
* Make certain command has gone through * Make certain command has gone through
* FIXME: register spinning issue * FIXME: register spinning issue
*/ */
counter=0; counter = 0;
do { pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd); do {
if(counter++ > 100)break; pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd);
} while ( (PCI_COMMAND_IO) & 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);
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 /*
*/ * Wait until command completes
counter=0; * FIXME: register spinning issue
do { pci_read_config_word ( dev, PMC551_SDRAM_CMD, &cmd); */
if(counter++ > 100)break; counter = 0;
} while ( (PCI_COMMAND_IO) & cmd ); do {
pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd);
pci_read_config_dword ( dev, PMC551_DRAM_CFG, &dcmd); if (counter++ > 100)
dcmd |= 0x02000000; break;
pci_write_config_dword ( dev, PMC551_DRAM_CFG, dcmd); } while ((PCI_COMMAND_IO) & cmd);
/* pci_read_config_dword(dev, PMC551_DRAM_CFG, &dcmd);
* Check to make certain fast back-to-back, if not dcmd |= 0x02000000;
* then set it so pci_write_config_dword(dev, PMC551_DRAM_CFG, dcmd);
*/
pci_read_config_word( dev, PCI_STATUS, &cmd); /*
if((cmd&PCI_COMMAND_FAST_BACK) == 0) { * Check to make certain fast back-to-back, if not
cmd |= PCI_COMMAND_FAST_BACK; * then set it so
pci_write_config_word( dev, PCI_STATUS, cmd); */
} pci_read_config_word(dev, PCI_STATUS, &cmd);
if ((cmd & PCI_COMMAND_FAST_BACK) == 0) {
/* cmd |= PCI_COMMAND_FAST_BACK;
* Check to make certain the DEVSEL is set correctly, this device pci_write_config_word(dev, PCI_STATUS, cmd);
* 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) { * Check to make certain the DEVSEL is set correctly, this device
cmd &= ~PCI_STATUS_DEVSEL_MASK; * has a tendancy to assert DEVSEL and TRDY when a write is performed
pci_write_config_word( dev, PCI_STATUS, cmd ); * to the memory when memory is read-only
} */
/* if ((cmd & PCI_STATUS_DEVSEL_MASK) != 0x0) {
* Set to be prefetchable and put everything back based on old cfg. 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 * it's possible that the reset of the V370PDC nuked the original
* setup * setup
*/ */
/* /*
cfg |= PCI_BASE_ADDRESS_MEM_PREFETCH; cfg |= PCI_BASE_ADDRESS_MEM_PREFETCH;
pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, cfg ); pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, cfg );
*/ */
/* /*
* Turn PCI memory and I/O bus access back on * Turn PCI memory and I/O bus access back on
*/ */
pci_write_config_word( dev, PCI_COMMAND, pci_write_config_word(dev, PCI_COMMAND,
PCI_COMMAND_MEMORY | PCI_COMMAND_IO ); PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
#ifdef CONFIG_MTD_PMC551_DEBUG #ifdef CONFIG_MTD_PMC551_DEBUG
/* /*
* Some screen fun * Some screen fun
*/ */
printk(KERN_DEBUG "pmc551: %d%c (0x%x) of %sprefetchable memory at 0x%llx\n", printk(KERN_DEBUG "pmc551: %d%c (0x%x) of %sprefetchable memory at "
(size<1024)?size:(size<1048576)?size>>10:size>>20, "0x%llx\n", (size < 1024) ? size : (size < 1048576) ?
(size<1024)?'B':(size<1048576)?'K':'M', size >> 10 : size >> 20,
size, ((dcmd&(0x1<<3)) == 0)?"non-":"", (size < 1024) ? 'B' : (size < 1048576) ? 'K' : 'M', size,
(unsigned long long)((dev->resource[0].start)&PCI_BASE_ADDRESS_MEM_MASK)); ((dcmd & (0x1 << 3)) == 0) ? "non-" : "",
(unsigned long long)((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 ); * Check to see the state of the memory
printk(KERN_DEBUG "pmc551: DRAM_BLK0 Flags: %s,%s\n" */
"pmc551: DRAM_BLK0 Size: %d at %d\n" pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dcmd);
"pmc551: DRAM_BLK0 Row MUX: %d, Col MUX: %d\n", printk(KERN_DEBUG "pmc551: DRAM_BLK0 Flags: %s,%s\n"
(((0x1<<1)&dcmd) == 0)?"RW":"RO", "pmc551: DRAM_BLK0 Size: %d at %d\n"
(((0x1<<0)&dcmd) == 0)?"Off":"On", "pmc551: DRAM_BLK0 Row MUX: %d, Col MUX: %d\n",
PMC551_DRAM_BLK_GET_SIZE(dcmd), (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO",
((dcmd>>20)&0x7FF), ((dcmd>>13)&0x7), ((dcmd>>9)&0xF) ); (((0x1 << 0) & dcmd) == 0) ? "Off" : "On",
PMC551_DRAM_BLK_GET_SIZE(dcmd),
pci_read_config_dword( dev, PMC551_DRAM_BLK1, &dcmd ); ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7),
printk(KERN_DEBUG "pmc551: DRAM_BLK1 Flags: %s,%s\n" ((dcmd >> 9) & 0xF));
"pmc551: DRAM_BLK1 Size: %d at %d\n"
"pmc551: DRAM_BLK1 Row MUX: %d, Col MUX: %d\n", pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dcmd);
(((0x1<<1)&dcmd) == 0)?"RW":"RO", printk(KERN_DEBUG "pmc551: DRAM_BLK1 Flags: %s,%s\n"
(((0x1<<0)&dcmd) == 0)?"Off":"On", "pmc551: DRAM_BLK1 Size: %d at %d\n"
PMC551_DRAM_BLK_GET_SIZE(dcmd), "pmc551: DRAM_BLK1 Row MUX: %d, Col MUX: %d\n",
((dcmd>>20)&0x7FF), ((dcmd>>13)&0x7), ((dcmd>>9)&0xF) ); (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO",
(((0x1 << 0) & dcmd) == 0) ? "Off" : "On",
pci_read_config_dword( dev, PMC551_DRAM_BLK2, &dcmd ); PMC551_DRAM_BLK_GET_SIZE(dcmd),
printk(KERN_DEBUG "pmc551: DRAM_BLK2 Flags: %s,%s\n" ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7),
"pmc551: DRAM_BLK2 Size: %d at %d\n" ((dcmd >> 9) & 0xF));
"pmc551: DRAM_BLK2 Row MUX: %d, Col MUX: %d\n",
(((0x1<<1)&dcmd) == 0)?"RW":"RO", pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dcmd);
(((0x1<<0)&dcmd) == 0)?"Off":"On", printk(KERN_DEBUG "pmc551: DRAM_BLK2 Flags: %s,%s\n"
PMC551_DRAM_BLK_GET_SIZE(dcmd), "pmc551: DRAM_BLK2 Size: %d at %d\n"
((dcmd>>20)&0x7FF), ((dcmd>>13)&0x7), ((dcmd>>9)&0xF) ); "pmc551: DRAM_BLK2 Row MUX: %d, Col MUX: %d\n",
(((0x1 << 1) & dcmd) == 0) ? "RW" : "RO",
pci_read_config_dword( dev, PMC551_DRAM_BLK3, &dcmd ); (((0x1 << 0) & dcmd) == 0) ? "Off" : "On",
printk(KERN_DEBUG "pmc551: DRAM_BLK3 Flags: %s,%s\n" PMC551_DRAM_BLK_GET_SIZE(dcmd),
"pmc551: DRAM_BLK3 Size: %d at %d\n" ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7),
"pmc551: DRAM_BLK3 Row MUX: %d, Col MUX: %d\n", ((dcmd >> 9) & 0xF));
(((0x1<<1)&dcmd) == 0)?"RW":"RO",
(((0x1<<0)&dcmd) == 0)?"Off":"On", pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dcmd);
PMC551_DRAM_BLK_GET_SIZE(dcmd), printk(KERN_DEBUG "pmc551: DRAM_BLK3 Flags: %s,%s\n"
((dcmd>>20)&0x7FF), ((dcmd>>13)&0x7), ((dcmd>>9)&0xF) ); "pmc551: DRAM_BLK3 Size: %d at %d\n"
"pmc551: DRAM_BLK3 Row MUX: %d, Col MUX: %d\n",
pci_read_config_word( dev, PCI_COMMAND, &cmd ); (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO",
printk( KERN_DEBUG "pmc551: Memory Access %s\n", (((0x1 << 0) & dcmd) == 0) ? "Off" : "On",
(((0x1<<1)&cmd) == 0)?"off":"on" ); PMC551_DRAM_BLK_GET_SIZE(dcmd),
printk( KERN_DEBUG "pmc551: I/O Access %s\n", ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7),
(((0x1<<0)&cmd) == 0)?"off":"on" ); ((dcmd >> 9) & 0xF));
pci_read_config_word( dev, PCI_STATUS, &cmd ); pci_read_config_word(dev, PCI_COMMAND, &cmd);
printk( KERN_DEBUG "pmc551: Devsel %s\n", printk(KERN_DEBUG "pmc551: Memory Access %s\n",
((PCI_STATUS_DEVSEL_MASK&cmd)==0x000)?"Fast": (((0x1 << 1) & cmd) == 0) ? "off" : "on");
((PCI_STATUS_DEVSEL_MASK&cmd)==0x200)?"Medium": printk(KERN_DEBUG "pmc551: I/O Access %s\n",
((PCI_STATUS_DEVSEL_MASK&cmd)==0x400)?"Slow":"Invalid" ); (((0x1 << 0) & cmd) == 0) ? "off" : "on");
printk( KERN_DEBUG "pmc551: %sFast Back-to-Back\n", pci_read_config_word(dev, PCI_STATUS, &cmd);
((PCI_COMMAND_FAST_BACK&cmd) == 0)?"Not ":"" ); printk(KERN_DEBUG "pmc551: Devsel %s\n",
((PCI_STATUS_DEVSEL_MASK & cmd) == 0x000) ? "Fast" :
pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd ); ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x200) ? "Medium" :
printk( KERN_DEBUG "pmc551: EEPROM is under %s control\n" ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x400) ? "Slow" : "Invalid");
"pmc551: System Control Register is %slocked to PCI access\n"
"pmc551: System Control Register is %slocked to EEPROM access\n", printk(KERN_DEBUG "pmc551: %sFast Back-to-Back\n",
(bcmd&0x1)?"software":"hardware", ((PCI_COMMAND_FAST_BACK & cmd) == 0) ? "Not " : "");
(bcmd&0x20)?"":"un", (bcmd&0x40)?"":"un");
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 #endif
return size; return size;
} }
/* /*
* Kernel version specific module stuffages * Kernel version specific module stuffages
*/ */
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Ferrell <mferrell@mvista.com>"); MODULE_AUTHOR("Mark Ferrell <mferrell@mvista.com>");
MODULE_DESCRIPTION(PMC551_VERSION); MODULE_DESCRIPTION(PMC551_VERSION);
...@@ -628,11 +650,11 @@ MODULE_DESCRIPTION(PMC551_VERSION); ...@@ -628,11 +650,11 @@ MODULE_DESCRIPTION(PMC551_VERSION);
/* /*
* Stuff these outside the ifdef so as to not bust compiled in driver support * 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) #if defined(CONFIG_MTD_PMC551_APERTURE_SIZE)
static int asize=CONFIG_MTD_PMC551_APERTURE_SIZE static int asize = CONFIG_MTD_PMC551_APERTURE_SIZE
#else #else
static int asize=0; static int asize = 0;
#endif #endif
module_param(msize, int, 0); module_param(msize, int, 0);
...@@ -645,172 +667,179 @@ MODULE_PARM_DESC(asize, "aperture size, must be <= memsize [1-1024]"); ...@@ -645,172 +667,179 @@ MODULE_PARM_DESC(asize, "aperture size, must be <= memsize [1-1024]");
*/ */
static int __init init_pmc551(void) static int __init init_pmc551(void)
{ {
struct pci_dev *PCI_Device = NULL; struct pci_dev *PCI_Device = NULL;
struct mypriv *priv; struct mypriv *priv;
int count, found=0; int count, found = 0;
struct mtd_info *mtd; struct mtd_info *mtd;
u32 length = 0; u32 length = 0;
if(msize) { if (msize) {
msize = (1 << (ffs(msize) - 1))<<20; msize = (1 << (ffs(msize) - 1)) << 20;
if (msize > (1<<30)) { if (msize > (1 << 30)) {
printk(KERN_NOTICE "pmc551: Invalid memory size [%d]\n", msize); printk(KERN_NOTICE "pmc551: Invalid memory size [%d]\n",
msize);
return -EINVAL; return -EINVAL;
} }
} }
if(asize) { if (asize) {
asize = (1 << (ffs(asize) - 1))<<20; asize = (1 << (ffs(asize) - 1)) << 20;
if (asize > (1<<30) ) { if (asize > (1 << 30)) {
printk(KERN_NOTICE "pmc551: Invalid aperture size [%d]\n", asize); printk(KERN_NOTICE "pmc551: Invalid aperture size "
"[%d]\n", asize);
return -EINVAL; return -EINVAL;
} }
} }
printk(KERN_INFO PMC551_VERSION); printk(KERN_INFO PMC551_VERSION);
/* /*
* PCU-bus chipset probe. * PCU-bus chipset probe.
*/ */
for( count = 0; count < MAX_MTD_DEVICES; count++ ) { for (count = 0; count < MAX_MTD_DEVICES; count++) {
if ((PCI_Device = pci_get_device(PCI_VENDOR_ID_V3_SEMI, if ((PCI_Device = pci_get_device(PCI_VENDOR_ID_V3_SEMI,
PCI_DEVICE_ID_V3_SEMI_V370PDC, PCI_DEVICE_ID_V3_SEMI_V370PDC,
PCI_Device ) ) == NULL) { PCI_Device)) == NULL) {
break; break;
} }
printk(KERN_NOTICE "pmc551: Found PCI V370PDC at 0x%llx\n", printk(KERN_NOTICE "pmc551: Found PCI V370PDC at 0x%llx\n",
(unsigned long long)PCI_Device->resource[0].start); (unsigned long long)PCI_Device->resource[0].start);
/* /*
* The PMC551 device acts VERY weird if you don't init it * The PMC551 device acts VERY weird if you don't init it
* first. i.e. it will not correctly report devsel. If for * first. i.e. it will not correctly report devsel. If for
* some reason the sdram is in a wrote-protected state the * some reason the sdram is in a wrote-protected state the
* device will DEVSEL when it is written to causing problems * device will DEVSEL when it is written to causing problems
* with the oldproc.c driver in * with the oldproc.c driver in
* some kernels (2.2.*) * some kernels (2.2.*)
*/ */
if((length = fixup_pmc551(PCI_Device)) <= 0) { if ((length = fixup_pmc551(PCI_Device)) <= 0) {
printk(KERN_NOTICE "pmc551: Cannot init SDRAM\n"); printk(KERN_NOTICE "pmc551: Cannot init SDRAM\n");
break; break;
} }
/* /*
* This is needed until the driver is capable of reading the * This is needed until the driver is capable of reading the
* onboard I2C SROM to discover the "real" memory size. * onboard I2C SROM to discover the "real" memory size.
*/ */
if(msize) { if (msize) {
length = 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 { } else {
msize = length; msize = length;
} }
mtd = kmalloc(sizeof(struct mtd_info), GFP_KERNEL); mtd = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd) { if (!mtd) {
printk(KERN_NOTICE "pmc551: Cannot allocate new MTD device.\n"); printk(KERN_NOTICE "pmc551: Cannot allocate new MTD "
break; "device.\n");
} break;
}
memset(mtd, 0, sizeof(struct mtd_info));
memset(mtd, 0, sizeof(struct mtd_info));
priv = kmalloc (sizeof(struct mypriv), GFP_KERNEL);
if (!priv) { priv = kmalloc(sizeof(struct mypriv), GFP_KERNEL);
printk(KERN_NOTICE "pmc551: Cannot allocate new MTD device.\n"); if (!priv) {
kfree(mtd); printk(KERN_NOTICE "pmc551: Cannot allocate new MTD "
break; "device.\n");
} kfree(mtd);
memset(priv, 0, sizeof(*priv)); break;
mtd->priv = priv; }
priv->dev = PCI_Device; memset(priv, 0, sizeof(*priv));
mtd->priv = priv;
if(asize > length) { priv->dev = PCI_Device;
printk(KERN_NOTICE "pmc551: reducing aperture size to fit %dM\n",length>>20);
if (asize > length) {
printk(KERN_NOTICE "pmc551: reducing aperture size to "
"fit %dM\n", length >> 20);
priv->asize = asize = length; priv->asize = asize = length;
} else if (asize == 0 || 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; priv->asize = asize = length;
} else { } 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->asize = asize;
} }
priv->start = ioremap(((PCI_Device->resource[0].start) priv->start = ioremap(((PCI_Device->resource[0].start)
& PCI_BASE_ADDRESS_MEM_MASK), & PCI_BASE_ADDRESS_MEM_MASK),
priv->asize); priv->asize);
if (!priv->start) { if (!priv->start) {
printk(KERN_NOTICE "pmc551: Unable to map IO space\n"); printk(KERN_NOTICE "pmc551: Unable to map IO space\n");
kfree(mtd->priv); kfree(mtd->priv);
kfree(mtd); kfree(mtd);
break; break;
} }
#ifdef CONFIG_MTD_PMC551_DEBUG #ifdef CONFIG_MTD_PMC551_DEBUG
printk( KERN_DEBUG "pmc551: setting aperture to %d\n", printk(KERN_DEBUG "pmc551: setting aperture to %d\n",
ffs(priv->asize>>20)-1); ffs(priv->asize >> 20) - 1);
#endif #endif
priv->base_map0 = ( PMC551_PCI_MEM_MAP_REG_EN priv->base_map0 = (PMC551_PCI_MEM_MAP_REG_EN
| PMC551_PCI_MEM_MAP_ENABLE | PMC551_PCI_MEM_MAP_ENABLE
| (ffs(priv->asize>>20)-1)<<4 ); | (ffs(priv->asize >> 20) - 1) << 4);
priv->curr_map0 = priv->base_map0; priv->curr_map0 = priv->base_map0;
pci_write_config_dword ( priv->dev, PMC551_PCI_MEM_MAP0, pci_write_config_dword(priv->dev, PMC551_PCI_MEM_MAP0,
priv->curr_map0 ); priv->curr_map0);
#ifdef CONFIG_MTD_PMC551_DEBUG #ifdef CONFIG_MTD_PMC551_DEBUG
printk( KERN_DEBUG "pmc551: aperture set to %d\n", printk(KERN_DEBUG "pmc551: aperture set to %d\n",
(priv->base_map0 & 0xF0)>>4 ); (priv->base_map0 & 0xF0) >> 4);
#endif #endif
mtd->size = msize; mtd->size = msize;
mtd->flags = MTD_CAP_RAM; mtd->flags = MTD_CAP_RAM;
mtd->erase = pmc551_erase; mtd->erase = pmc551_erase;
mtd->read = pmc551_read; mtd->read = pmc551_read;
mtd->write = pmc551_write; mtd->write = pmc551_write;
mtd->point = pmc551_point; mtd->point = pmc551_point;
mtd->unpoint = pmc551_unpoint; mtd->unpoint = pmc551_unpoint;
mtd->type = MTD_RAM; mtd->type = MTD_RAM;
mtd->name = "PMC551 RAM board"; mtd->name = "PMC551 RAM board";
mtd->erasesize = 0x10000; mtd->erasesize = 0x10000;
mtd->writesize = 1; mtd->writesize = 1;
mtd->owner = THIS_MODULE; mtd->owner = THIS_MODULE;
if (add_mtd_device(mtd)) { if (add_mtd_device(mtd)) {
printk(KERN_NOTICE "pmc551: Failed to register new device\n"); printk(KERN_NOTICE "pmc551: Failed to register new "
"device\n");
iounmap(priv->start); iounmap(priv->start);
kfree(mtd->priv); kfree(mtd->priv);
kfree(mtd); kfree(mtd);
break; break;
} }
/* Keep a reference as the add_mtd_device worked */ /* Keep a reference as the add_mtd_device worked */
pci_dev_get(PCI_Device); pci_dev_get(PCI_Device);
printk(KERN_NOTICE "Registered pmc551 memory device.\n"); 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 %dM of memory from 0x%p to 0x%p\n",
priv->asize>>20, priv->asize >> 20,
priv->start, priv->start, priv->start + priv->asize);
priv->start + priv->asize); printk(KERN_NOTICE "Total memory is %d%c\n",
printk(KERN_NOTICE "Total memory is %d%c\n", (length < 1024) ? length :
(length<1024)?length: (length < 1048576) ? length >> 10 : length >> 20,
(length<1048576)?length>>10:length>>20, (length < 1024) ? 'B' : (length < 1048576) ? 'K' : 'M');
(length<1024)?'B':(length<1048576)?'K':'M');
priv->nextpmc551 = pmc551list; priv->nextpmc551 = pmc551list;
pmc551list = mtd; pmc551list = mtd;
found++; found++;
} }
/* Exited early, reference left over */ /* Exited early, reference left over */
if (PCI_Device) if (PCI_Device)
pci_dev_put(PCI_Device); pci_dev_put(PCI_Device);
if( !pmc551list ) { if (!pmc551list) {
printk(KERN_NOTICE "pmc551: not detected\n"); printk(KERN_NOTICE "pmc551: not detected\n");
return -ENODEV; return -ENODEV;
} else { } else {
printk(KERN_NOTICE "pmc551: %d pmc551 devices loaded\n", found); printk(KERN_NOTICE "pmc551: %d pmc551 devices loaded\n", found);
return 0; return 0;
} }
} }
...@@ -819,24 +848,24 @@ static int __init init_pmc551(void) ...@@ -819,24 +848,24 @@ static int __init init_pmc551(void)
*/ */
static void __exit cleanup_pmc551(void) static void __exit cleanup_pmc551(void)
{ {
int found=0; int found = 0;
struct mtd_info *mtd; struct mtd_info *mtd;
struct mypriv *priv; struct mypriv *priv;
while((mtd=pmc551list)) { while ((mtd = pmc551list)) {
priv = mtd->priv; priv = mtd->priv;
pmc551list = priv->nextpmc551; pmc551list = priv->nextpmc551;
if(priv->start) { if (priv->start) {
printk (KERN_DEBUG "pmc551: unmapping %dM starting at 0x%p\n", printk(KERN_DEBUG "pmc551: unmapping %dM starting at "
priv->asize>>20, priv->start); "0x%p\n", priv->asize >> 20, priv->start);
iounmap (priv->start); iounmap(priv->start);
} }
pci_dev_put(priv->dev); pci_dev_put(priv->dev);
kfree (mtd->priv); kfree(mtd->priv);
del_mtd_device (mtd); del_mtd_device(mtd);
kfree (mtd); kfree(mtd);
found++; found++;
} }
......
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