Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 2 | * $Id: pmc551.c,v 1.32 2005/11/07 11:14:25 gleixner Exp $ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 4 | * PMC551 PCI Mezzanine Ram Device |
| 5 | * |
| 6 | * Author: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 7 | * Mark Ferrell <mferrell@mvista.com> |
| 8 | * Copyright 1999,2000 Nortel Networks |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * |
| 10 | * License: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 11 | * As part of this driver was derived from the slram.c driver it |
| 12 | * falls under the same license, which is GNU General Public |
| 13 | * License v2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * |
| 15 | * Description: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 16 | * This driver is intended to support the PMC551 PCI Ram device |
| 17 | * from Ramix Inc. The PMC551 is a PMC Mezzanine module for |
| 18 | * cPCI embedded systems. The device contains a single SROM |
| 19 | * that initially programs the V370PDC chipset onboard the |
| 20 | * device, and various banks of DRAM/SDRAM onboard. This driver |
| 21 | * implements this PCI Ram device as an MTD (Memory Technology |
| 22 | * Device) so that it can be used to hold a file system, or for |
| 23 | * added swap space in embedded systems. Since the memory on |
| 24 | * this board isn't as fast as main memory we do not try to hook |
| 25 | * it into main memory as that would simply reduce performance |
| 26 | * on the system. Using it as a block device allows us to use |
| 27 | * it as high speed swap or for a high speed disk device of some |
| 28 | * sort. Which becomes very useful on diskless systems in the |
| 29 | * embedded market I might add. |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 30 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | * Notes: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 32 | * Due to what I assume is more buggy SROM, the 64M PMC551 I |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 33 | * have available claims that all 4 of its DRAM banks have 64MiB |
| 34 | * of ram configured (making a grand total of 256MiB onboard). |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 35 | * This is slightly annoying since the BAR0 size reflects the |
| 36 | * aperture size, not the dram size, and the V370PDC supplies no |
| 37 | * other method for memory size discovery. This problem is |
| 38 | * mostly only relevant when compiled as a module, as the |
| 39 | * unloading of the module with an aperture size smaller then |
| 40 | * the ram will cause the driver to detect the onboard memory |
| 41 | * size to be equal to the aperture size when the module is |
| 42 | * reloaded. Soooo, to help, the module supports an msize |
| 43 | * option to allow the specification of the onboard memory, and |
| 44 | * an asize option, to allow the specification of the aperture |
| 45 | * size. The aperture must be equal to or less then the memory |
| 46 | * size, the driver will correct this if you screw it up. This |
| 47 | * problem is not relevant for compiled in drivers as compiled |
| 48 | * in drivers only init once. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | * |
| 50 | * Credits: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 51 | * Saeed Karamooz <saeed@ramix.com> of Ramix INC. for the |
| 52 | * initial example code of how to initialize this device and for |
| 53 | * help with questions I had concerning operation of the device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | * |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 55 | * Most of the MTD code for this driver was originally written |
| 56 | * for the slram.o module in the MTD drivers package which |
| 57 | * allows the mapping of system memory into an MTD device. |
| 58 | * Since the PMC551 memory module is accessed in the same |
| 59 | * fashion as system memory, the slram.c code became a very nice |
| 60 | * fit to the needs of this driver. All we added was PCI |
| 61 | * detection/initialization to the driver and automatically figure |
| 62 | * out the size via the PCI detection.o, later changes by Corey |
| 63 | * Minyard set up the card to utilize a 1M sliding apature. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | * |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 65 | * Corey Minyard <minyard@nortelnetworks.com> |
| 66 | * * Modified driver to utilize a sliding aperture instead of |
| 67 | * mapping all memory into kernel space which turned out to |
| 68 | * be very wasteful. |
| 69 | * * Located a bug in the SROM's initialization sequence that |
| 70 | * made the memory unusable, added a fix to code to touch up |
| 71 | * the DRAM some. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | * |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 73 | * Bugs/FIXMEs: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 74 | * * MUST fix the init function to not spin on a register |
| 75 | * waiting for it to set .. this does not safely handle busted |
| 76 | * devices that never reset the register correctly which will |
| 77 | * cause the system to hang w/ a reboot being the only chance at |
| 78 | * recover. [sort of fixed, could be better] |
| 79 | * * Add I2C handling of the SROM so we can read the SROM's information |
| 80 | * about the aperture size. This should always accurately reflect the |
| 81 | * onboard memory size. |
| 82 | * * Comb the init routine. It's still a bit cludgy on a few things. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | */ |
| 84 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | #include <linux/kernel.h> |
| 86 | #include <linux/module.h> |
| 87 | #include <asm/uaccess.h> |
| 88 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | #include <linux/init.h> |
| 90 | #include <linux/ptrace.h> |
| 91 | #include <linux/slab.h> |
| 92 | #include <linux/string.h> |
| 93 | #include <linux/timer.h> |
| 94 | #include <linux/major.h> |
| 95 | #include <linux/fs.h> |
| 96 | #include <linux/ioctl.h> |
| 97 | #include <asm/io.h> |
| 98 | #include <asm/system.h> |
| 99 | #include <linux/pci.h> |
| 100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | #include <linux/mtd/mtd.h> |
| 102 | #include <linux/mtd/pmc551.h> |
| 103 | #include <linux/mtd/compatmac.h> |
| 104 | |
| 105 | static struct mtd_info *pmc551list; |
| 106 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 107 | static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 109 | struct mypriv *priv = mtd->priv; |
| 110 | u32 soff_hi, soff_lo; /* start address offset hi/lo */ |
| 111 | u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ |
| 112 | unsigned long end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | u_char *ptr; |
| 114 | size_t retlen; |
| 115 | |
| 116 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 117 | printk(KERN_DEBUG "pmc551_erase(pos:%ld, len:%ld)\n", (long)instr->addr, |
| 118 | (long)instr->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | #endif |
| 120 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 121 | end = instr->addr + instr->len - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 123 | /* Is it past the end? */ |
| 124 | if (end > mtd->size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 126 | printk(KERN_DEBUG "pmc551_erase() out of bounds (%ld > %ld)\n", |
| 127 | (long)end, (long)mtd->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 129 | return -EINVAL; |
| 130 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 132 | eoff_hi = end & ~(priv->asize - 1); |
| 133 | soff_hi = instr->addr & ~(priv->asize - 1); |
| 134 | eoff_lo = end & (priv->asize - 1); |
| 135 | soff_lo = instr->addr & (priv->asize - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 137 | pmc551_point(mtd, instr->addr, instr->len, &retlen, &ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 139 | if (soff_hi == eoff_hi || mtd->size == priv->asize) { |
| 140 | /* The whole thing fits within one access, so just one shot |
| 141 | will do it. */ |
| 142 | memset(ptr, 0xff, instr->len); |
| 143 | } else { |
| 144 | /* We have to do multiple writes to get all the data |
| 145 | written. */ |
| 146 | while (soff_hi != eoff_hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 148 | printk(KERN_DEBUG "pmc551_erase() soff_hi: %ld, " |
| 149 | "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 151 | memset(ptr, 0xff, priv->asize); |
| 152 | if (soff_hi + priv->asize >= mtd->size) { |
| 153 | goto out; |
| 154 | } |
| 155 | soff_hi += priv->asize; |
| 156 | pmc551_point(mtd, (priv->base_map0 | soff_hi), |
| 157 | priv->asize, &retlen, &ptr); |
| 158 | } |
| 159 | memset(ptr, 0xff, eoff_lo); |
| 160 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 162 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | instr->state = MTD_ERASE_DONE; |
| 164 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 165 | printk(KERN_DEBUG "pmc551_erase() done\n"); |
| 166 | #endif |
| 167 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 168 | mtd_erase_callback(instr); |
| 169 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | } |
| 171 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 172 | static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len, |
| 173 | size_t * retlen, u_char ** mtdbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 175 | struct mypriv *priv = mtd->priv; |
| 176 | u32 soff_hi; |
| 177 | u32 soff_lo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | |
| 179 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 180 | printk(KERN_DEBUG "pmc551_point(%ld, %ld)\n", (long)from, (long)len); |
| 181 | #endif |
| 182 | |
| 183 | if (from + len > mtd->size) { |
| 184 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 185 | printk(KERN_DEBUG "pmc551_point() out of bounds (%ld > %ld)\n", |
| 186 | (long)from + len, (long)mtd->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | #endif |
| 188 | return -EINVAL; |
| 189 | } |
| 190 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 191 | soff_hi = from & ~(priv->asize - 1); |
| 192 | soff_lo = from & (priv->asize - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
| 194 | /* Cheap hack optimization */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 195 | if (priv->curr_map0 != from) { |
| 196 | pci_write_config_dword(priv->dev, PMC551_PCI_MEM_MAP0, |
| 197 | (priv->base_map0 | soff_hi)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | priv->curr_map0 = soff_hi; |
| 199 | } |
| 200 | |
| 201 | *mtdbuf = priv->start + soff_lo; |
| 202 | *retlen = len; |
| 203 | return 0; |
| 204 | } |
| 205 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 206 | static void pmc551_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from, |
| 207 | size_t len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | { |
| 209 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 210 | printk(KERN_DEBUG "pmc551_unpoint()\n"); |
| 211 | #endif |
| 212 | } |
| 213 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 214 | static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len, |
| 215 | size_t * retlen, u_char * buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 217 | struct mypriv *priv = mtd->priv; |
| 218 | u32 soff_hi, soff_lo; /* start address offset hi/lo */ |
| 219 | u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ |
| 220 | unsigned long end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | u_char *ptr; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 222 | u_char *copyto = buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
| 224 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 225 | printk(KERN_DEBUG "pmc551_read(pos:%ld, len:%ld) asize: %ld\n", |
| 226 | (long)from, (long)len, (long)priv->asize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | #endif |
| 228 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 229 | end = from + len - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 231 | /* Is it past the end? */ |
| 232 | if (end > mtd->size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 234 | printk(KERN_DEBUG "pmc551_read() out of bounds (%ld > %ld)\n", |
| 235 | (long)end, (long)mtd->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 237 | return -EINVAL; |
| 238 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 240 | soff_hi = from & ~(priv->asize - 1); |
| 241 | eoff_hi = end & ~(priv->asize - 1); |
| 242 | soff_lo = from & (priv->asize - 1); |
| 243 | eoff_lo = end & (priv->asize - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 245 | pmc551_point(mtd, from, len, retlen, &ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 247 | if (soff_hi == eoff_hi) { |
| 248 | /* The whole thing fits within one access, so just one shot |
| 249 | will do it. */ |
| 250 | memcpy(copyto, ptr, len); |
| 251 | copyto += len; |
| 252 | } else { |
| 253 | /* We have to do multiple writes to get all the data |
| 254 | written. */ |
| 255 | while (soff_hi != eoff_hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 257 | printk(KERN_DEBUG "pmc551_read() soff_hi: %ld, " |
| 258 | "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 260 | memcpy(copyto, ptr, priv->asize); |
| 261 | copyto += priv->asize; |
| 262 | if (soff_hi + priv->asize >= mtd->size) { |
| 263 | goto out; |
| 264 | } |
| 265 | soff_hi += priv->asize; |
| 266 | pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr); |
| 267 | } |
| 268 | memcpy(copyto, ptr, eoff_lo); |
| 269 | copyto += eoff_lo; |
| 270 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 272 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 274 | printk(KERN_DEBUG "pmc551_read() done\n"); |
| 275 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 276 | *retlen = copyto - buf; |
| 277 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | } |
| 279 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 280 | static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len, |
| 281 | size_t * retlen, const u_char * buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 283 | struct mypriv *priv = mtd->priv; |
| 284 | u32 soff_hi, soff_lo; /* start address offset hi/lo */ |
| 285 | u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ |
| 286 | unsigned long end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | u_char *ptr; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 288 | const u_char *copyfrom = buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
| 290 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 291 | printk(KERN_DEBUG "pmc551_write(pos:%ld, len:%ld) asize:%ld\n", |
| 292 | (long)to, (long)len, (long)priv->asize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | #endif |
| 294 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 295 | end = to + len - 1; |
| 296 | /* Is it past the end? or did the u32 wrap? */ |
| 297 | if (end > mtd->size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 299 | printk(KERN_DEBUG "pmc551_write() out of bounds (end: %ld, " |
| 300 | "size: %ld, to: %ld)\n", (long)end, (long)mtd->size, |
| 301 | (long)to); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 303 | return -EINVAL; |
| 304 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 306 | soff_hi = to & ~(priv->asize - 1); |
| 307 | eoff_hi = end & ~(priv->asize - 1); |
| 308 | soff_lo = to & (priv->asize - 1); |
| 309 | eoff_lo = end & (priv->asize - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 311 | pmc551_point(mtd, to, len, retlen, &ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 313 | if (soff_hi == eoff_hi) { |
| 314 | /* The whole thing fits within one access, so just one shot |
| 315 | will do it. */ |
| 316 | memcpy(ptr, copyfrom, len); |
| 317 | copyfrom += len; |
| 318 | } else { |
| 319 | /* We have to do multiple writes to get all the data |
| 320 | written. */ |
| 321 | while (soff_hi != eoff_hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 323 | printk(KERN_DEBUG "pmc551_write() soff_hi: %ld, " |
| 324 | "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 326 | memcpy(ptr, copyfrom, priv->asize); |
| 327 | copyfrom += priv->asize; |
| 328 | if (soff_hi >= mtd->size) { |
| 329 | goto out; |
| 330 | } |
| 331 | soff_hi += priv->asize; |
| 332 | pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr); |
| 333 | } |
| 334 | memcpy(ptr, copyfrom, eoff_lo); |
| 335 | copyfrom += eoff_lo; |
| 336 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 338 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 340 | printk(KERN_DEBUG "pmc551_write() done\n"); |
| 341 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 342 | *retlen = copyfrom - buf; |
| 343 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | /* |
| 347 | * Fixup routines for the V370PDC |
| 348 | * PCI device ID 0x020011b0 |
| 349 | * |
| 350 | * This function basicly kick starts the DRAM oboard the card and gets it |
| 351 | * ready to be used. Before this is done the device reads VERY erratic, so |
| 352 | * much that it can crash the Linux 2.2.x series kernels when a user cat's |
| 353 | * /proc/pci .. though that is mainly a kernel bug in handling the PCI DEVSEL |
| 354 | * register. FIXME: stop spinning on registers .. must implement a timeout |
| 355 | * mechanism |
| 356 | * returns the size of the memory region found. |
| 357 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 358 | static u32 fixup_pmc551(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | { |
| 360 | #ifdef CONFIG_MTD_PMC551_BUGFIX |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 361 | u32 dram_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 363 | u32 size, dcmd, cfg, dtmp; |
| 364 | u16 cmd, tmp, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | u8 bcmd, counter; |
| 366 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 367 | /* Sanity Check */ |
| 368 | if (!dev) { |
| 369 | return -ENODEV; |
| 370 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
| 372 | /* |
| 373 | * Attempt to reset the card |
| 374 | * FIXME: Stop Spinning registers |
| 375 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 376 | counter = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | /* unlock registers */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 378 | pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, 0xA5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | /* read in old data */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 380 | pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | /* bang the reset line up and down for a few */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 382 | for (i = 0; i < 10; i++) { |
| 383 | counter = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | bcmd &= ~0x80; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 385 | while (counter++ < 100) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd); |
| 387 | } |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 388 | counter = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | bcmd |= 0x80; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 390 | while (counter++ < 100) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd); |
| 392 | } |
| 393 | } |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 394 | bcmd |= (0x40 | 0x20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd); |
| 396 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 397 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | * Take care and turn off the memory on the device while we |
| 399 | * tweak the configurations |
| 400 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 401 | pci_read_config_word(dev, PCI_COMMAND, &cmd); |
| 402 | tmp = cmd & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY); |
| 403 | pci_write_config_word(dev, PCI_COMMAND, tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
| 405 | /* |
| 406 | * Disable existing aperture before probing memory size |
| 407 | */ |
| 408 | pci_read_config_dword(dev, PMC551_PCI_MEM_MAP0, &dcmd); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 409 | dtmp = (dcmd | PMC551_PCI_MEM_MAP_ENABLE | PMC551_PCI_MEM_MAP_REG_EN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | pci_write_config_dword(dev, PMC551_PCI_MEM_MAP0, dtmp); |
| 411 | /* |
| 412 | * Grab old BAR0 config so that we can figure out memory size |
| 413 | * This is another bit of kludge going on. The reason for the |
| 414 | * redundancy is I am hoping to retain the original configuration |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 415 | * previously assigned to the card by the BIOS or some previous |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | * fixup routine in the kernel. So we read the old config into cfg, |
| 417 | * then write all 1's to the memory space, read back the result into |
| 418 | * "size", and then write back all the old config. |
| 419 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 420 | pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &cfg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | #ifndef CONFIG_MTD_PMC551_BUGFIX |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 422 | pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, ~0); |
| 423 | pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &size); |
| 424 | size = (size & PCI_BASE_ADDRESS_MEM_MASK); |
| 425 | size &= ~(size - 1); |
| 426 | pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, cfg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | #else |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 428 | /* |
| 429 | * Get the size of the memory by reading all the DRAM size values |
| 430 | * and adding them up. |
| 431 | * |
| 432 | * KLUDGE ALERT: the boards we are using have invalid column and |
| 433 | * row mux values. We fix them here, but this will break other |
| 434 | * memory configurations. |
| 435 | */ |
| 436 | pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dram_data); |
| 437 | size = PMC551_DRAM_BLK_GET_SIZE(dram_data); |
| 438 | dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5); |
| 439 | dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); |
| 440 | pci_write_config_dword(dev, PMC551_DRAM_BLK0, dram_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 442 | pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dram_data); |
| 443 | size += PMC551_DRAM_BLK_GET_SIZE(dram_data); |
| 444 | dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5); |
| 445 | dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); |
| 446 | pci_write_config_dword(dev, PMC551_DRAM_BLK1, dram_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 448 | pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dram_data); |
| 449 | size += PMC551_DRAM_BLK_GET_SIZE(dram_data); |
| 450 | dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5); |
| 451 | dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); |
| 452 | pci_write_config_dword(dev, PMC551_DRAM_BLK2, dram_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 454 | pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dram_data); |
| 455 | size += PMC551_DRAM_BLK_GET_SIZE(dram_data); |
| 456 | dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5); |
| 457 | dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); |
| 458 | pci_write_config_dword(dev, PMC551_DRAM_BLK3, dram_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 460 | /* |
| 461 | * Oops .. something went wrong |
| 462 | */ |
| 463 | if ((size &= PCI_BASE_ADDRESS_MEM_MASK) == 0) { |
| 464 | return -ENODEV; |
| 465 | } |
| 466 | #endif /* CONFIG_MTD_PMC551_BUGFIX */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 468 | if ((cfg & PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) { |
| 469 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | } |
| 471 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 472 | /* |
| 473 | * Precharge Dram |
| 474 | */ |
| 475 | pci_write_config_word(dev, PMC551_SDRAM_MA, 0x0400); |
| 476 | pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x00bf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 478 | /* |
| 479 | * Wait until command has gone through |
| 480 | * FIXME: register spinning issue |
| 481 | */ |
| 482 | do { |
| 483 | pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd); |
| 484 | if (counter++ > 100) |
| 485 | break; |
| 486 | } while ((PCI_COMMAND_IO) & cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 488 | /* |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 489 | * Turn on auto refresh |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | * The loop is taken directly from Ramix's example code. I assume that |
| 491 | * this must be held high for some duration of time, but I can find no |
| 492 | * documentation refrencing the reasons why. |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 493 | */ |
| 494 | for (i = 1; i <= 8; i++) { |
| 495 | pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x0df); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 497 | /* |
| 498 | * Make certain command has gone through |
| 499 | * FIXME: register spinning issue |
| 500 | */ |
| 501 | counter = 0; |
| 502 | do { |
| 503 | pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd); |
| 504 | if (counter++ > 100) |
| 505 | break; |
| 506 | } while ((PCI_COMMAND_IO) & cmd); |
| 507 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 509 | pci_write_config_word(dev, PMC551_SDRAM_MA, 0x0020); |
| 510 | pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x0ff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 512 | /* |
| 513 | * Wait until command completes |
| 514 | * FIXME: register spinning issue |
| 515 | */ |
| 516 | counter = 0; |
| 517 | do { |
| 518 | pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd); |
| 519 | if (counter++ > 100) |
| 520 | break; |
| 521 | } while ((PCI_COMMAND_IO) & cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 523 | pci_read_config_dword(dev, PMC551_DRAM_CFG, &dcmd); |
| 524 | dcmd |= 0x02000000; |
| 525 | pci_write_config_dword(dev, PMC551_DRAM_CFG, dcmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 527 | /* |
| 528 | * Check to make certain fast back-to-back, if not |
| 529 | * then set it so |
| 530 | */ |
| 531 | pci_read_config_word(dev, PCI_STATUS, &cmd); |
| 532 | if ((cmd & PCI_COMMAND_FAST_BACK) == 0) { |
| 533 | cmd |= PCI_COMMAND_FAST_BACK; |
| 534 | pci_write_config_word(dev, PCI_STATUS, cmd); |
| 535 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 537 | /* |
| 538 | * Check to make certain the DEVSEL is set correctly, this device |
| 539 | * has a tendancy to assert DEVSEL and TRDY when a write is performed |
| 540 | * to the memory when memory is read-only |
| 541 | */ |
| 542 | if ((cmd & PCI_STATUS_DEVSEL_MASK) != 0x0) { |
| 543 | cmd &= ~PCI_STATUS_DEVSEL_MASK; |
| 544 | pci_write_config_word(dev, PCI_STATUS, cmd); |
| 545 | } |
| 546 | /* |
| 547 | * Set to be prefetchable and put everything back based on old cfg. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | * it's possible that the reset of the V370PDC nuked the original |
| 549 | * setup |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 550 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | /* |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 552 | cfg |= PCI_BASE_ADDRESS_MEM_PREFETCH; |
| 553 | pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, cfg ); |
| 554 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 556 | /* |
| 557 | * Turn PCI memory and I/O bus access back on |
| 558 | */ |
| 559 | pci_write_config_word(dev, PCI_COMMAND, |
| 560 | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 562 | /* |
| 563 | * Some screen fun |
| 564 | */ |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 565 | printk(KERN_DEBUG "pmc551: %d%sB (0x%x) of %sprefetchable memory at " |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 566 | "0x%llx\n", (size < 1024) ? size : (size < 1048576) ? |
| 567 | size >> 10 : size >> 20, |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 568 | (size < 1024) ? "" : (size < 1048576) ? "Ki" : "Mi", size, |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 569 | ((dcmd & (0x1 << 3)) == 0) ? "non-" : "", |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 570 | (unsigned long long)pci_resource_start(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 572 | /* |
| 573 | * Check to see the state of the memory |
| 574 | */ |
| 575 | pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dcmd); |
| 576 | printk(KERN_DEBUG "pmc551: DRAM_BLK0 Flags: %s,%s\n" |
| 577 | "pmc551: DRAM_BLK0 Size: %d at %d\n" |
| 578 | "pmc551: DRAM_BLK0 Row MUX: %d, Col MUX: %d\n", |
| 579 | (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO", |
| 580 | (((0x1 << 0) & dcmd) == 0) ? "Off" : "On", |
| 581 | PMC551_DRAM_BLK_GET_SIZE(dcmd), |
| 582 | ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7), |
| 583 | ((dcmd >> 9) & 0xF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 585 | pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dcmd); |
| 586 | printk(KERN_DEBUG "pmc551: DRAM_BLK1 Flags: %s,%s\n" |
| 587 | "pmc551: DRAM_BLK1 Size: %d at %d\n" |
| 588 | "pmc551: DRAM_BLK1 Row MUX: %d, Col MUX: %d\n", |
| 589 | (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO", |
| 590 | (((0x1 << 0) & dcmd) == 0) ? "Off" : "On", |
| 591 | PMC551_DRAM_BLK_GET_SIZE(dcmd), |
| 592 | ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7), |
| 593 | ((dcmd >> 9) & 0xF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 595 | pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dcmd); |
| 596 | printk(KERN_DEBUG "pmc551: DRAM_BLK2 Flags: %s,%s\n" |
| 597 | "pmc551: DRAM_BLK2 Size: %d at %d\n" |
| 598 | "pmc551: DRAM_BLK2 Row MUX: %d, Col MUX: %d\n", |
| 599 | (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO", |
| 600 | (((0x1 << 0) & dcmd) == 0) ? "Off" : "On", |
| 601 | PMC551_DRAM_BLK_GET_SIZE(dcmd), |
| 602 | ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7), |
| 603 | ((dcmd >> 9) & 0xF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 605 | pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dcmd); |
| 606 | printk(KERN_DEBUG "pmc551: DRAM_BLK3 Flags: %s,%s\n" |
| 607 | "pmc551: DRAM_BLK3 Size: %d at %d\n" |
| 608 | "pmc551: DRAM_BLK3 Row MUX: %d, Col MUX: %d\n", |
| 609 | (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO", |
| 610 | (((0x1 << 0) & dcmd) == 0) ? "Off" : "On", |
| 611 | PMC551_DRAM_BLK_GET_SIZE(dcmd), |
| 612 | ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7), |
| 613 | ((dcmd >> 9) & 0xF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 615 | pci_read_config_word(dev, PCI_COMMAND, &cmd); |
| 616 | printk(KERN_DEBUG "pmc551: Memory Access %s\n", |
| 617 | (((0x1 << 1) & cmd) == 0) ? "off" : "on"); |
| 618 | printk(KERN_DEBUG "pmc551: I/O Access %s\n", |
| 619 | (((0x1 << 0) & cmd) == 0) ? "off" : "on"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 621 | pci_read_config_word(dev, PCI_STATUS, &cmd); |
| 622 | printk(KERN_DEBUG "pmc551: Devsel %s\n", |
| 623 | ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x000) ? "Fast" : |
| 624 | ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x200) ? "Medium" : |
| 625 | ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x400) ? "Slow" : "Invalid"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 627 | printk(KERN_DEBUG "pmc551: %sFast Back-to-Back\n", |
| 628 | ((PCI_COMMAND_FAST_BACK & cmd) == 0) ? "Not " : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 630 | pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd); |
| 631 | printk(KERN_DEBUG "pmc551: EEPROM is under %s control\n" |
| 632 | "pmc551: System Control Register is %slocked to PCI access\n" |
| 633 | "pmc551: System Control Register is %slocked to EEPROM access\n", |
| 634 | (bcmd & 0x1) ? "software" : "hardware", |
| 635 | (bcmd & 0x20) ? "" : "un", (bcmd & 0x40) ? "" : "un"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 637 | return size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | } |
| 639 | |
| 640 | /* |
| 641 | * Kernel version specific module stuffages |
| 642 | */ |
| 643 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | MODULE_LICENSE("GPL"); |
| 645 | MODULE_AUTHOR("Mark Ferrell <mferrell@mvista.com>"); |
| 646 | MODULE_DESCRIPTION(PMC551_VERSION); |
| 647 | |
| 648 | /* |
| 649 | * Stuff these outside the ifdef so as to not bust compiled in driver support |
| 650 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 651 | static int msize = 0; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 652 | static int asize = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
| 654 | module_param(msize, int, 0); |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 655 | MODULE_PARM_DESC(msize, "memory size in MiB [1 - 1024]"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | module_param(asize, int, 0); |
| 657 | MODULE_PARM_DESC(asize, "aperture size, must be <= memsize [1-1024]"); |
| 658 | |
| 659 | /* |
| 660 | * PMC551 Card Initialization |
| 661 | */ |
| 662 | static int __init init_pmc551(void) |
| 663 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 664 | struct pci_dev *PCI_Device = NULL; |
| 665 | struct mypriv *priv; |
| 666 | int count, found = 0; |
| 667 | struct mtd_info *mtd; |
| 668 | u32 length = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 670 | if (msize) { |
| 671 | msize = (1 << (ffs(msize) - 1)) << 20; |
| 672 | if (msize > (1 << 30)) { |
| 673 | printk(KERN_NOTICE "pmc551: Invalid memory size [%d]\n", |
| 674 | msize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | return -EINVAL; |
| 676 | } |
| 677 | } |
| 678 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 679 | if (asize) { |
| 680 | asize = (1 << (ffs(asize) - 1)) << 20; |
| 681 | if (asize > (1 << 30)) { |
| 682 | printk(KERN_NOTICE "pmc551: Invalid aperture size " |
| 683 | "[%d]\n", asize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | return -EINVAL; |
| 685 | } |
| 686 | } |
| 687 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 688 | printk(KERN_INFO PMC551_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 690 | /* |
| 691 | * PCU-bus chipset probe. |
| 692 | */ |
| 693 | for (count = 0; count < MAX_MTD_DEVICES; count++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 695 | if ((PCI_Device = pci_get_device(PCI_VENDOR_ID_V3_SEMI, |
| 696 | PCI_DEVICE_ID_V3_SEMI_V370PDC, |
| 697 | PCI_Device)) == NULL) { |
| 698 | break; |
| 699 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 701 | printk(KERN_NOTICE "pmc551: Found PCI V370PDC at 0x%llx\n", |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 702 | (unsigned long long)pci_resource_start(PCI_Device, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 704 | /* |
| 705 | * The PMC551 device acts VERY weird if you don't init it |
| 706 | * first. i.e. it will not correctly report devsel. If for |
| 707 | * some reason the sdram is in a wrote-protected state the |
| 708 | * device will DEVSEL when it is written to causing problems |
| 709 | * with the oldproc.c driver in |
| 710 | * some kernels (2.2.*) |
| 711 | */ |
| 712 | if ((length = fixup_pmc551(PCI_Device)) <= 0) { |
| 713 | printk(KERN_NOTICE "pmc551: Cannot init SDRAM\n"); |
| 714 | break; |
| 715 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | |
| 717 | /* |
| 718 | * This is needed until the driver is capable of reading the |
| 719 | * onboard I2C SROM to discover the "real" memory size. |
| 720 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 721 | if (msize) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | length = msize; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 723 | printk(KERN_NOTICE "pmc551: Using specified memory " |
| 724 | "size 0x%x\n", length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | } else { |
| 726 | msize = length; |
| 727 | } |
| 728 | |
Jiri Slaby | 7fefb92 | 2006-09-19 21:55:18 +0200 | [diff] [blame] | 729 | mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 730 | if (!mtd) { |
| 731 | printk(KERN_NOTICE "pmc551: Cannot allocate new MTD " |
| 732 | "device.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | break; |
| 734 | } |
| 735 | |
Jiri Slaby | 7fefb92 | 2006-09-19 21:55:18 +0200 | [diff] [blame] | 736 | priv = kzalloc(sizeof(struct mypriv), GFP_KERNEL); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 737 | if (!priv) { |
| 738 | printk(KERN_NOTICE "pmc551: Cannot allocate new MTD " |
| 739 | "device.\n"); |
| 740 | kfree(mtd); |
| 741 | break; |
| 742 | } |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 743 | mtd->priv = priv; |
| 744 | priv->dev = PCI_Device; |
| 745 | |
| 746 | if (asize > length) { |
| 747 | printk(KERN_NOTICE "pmc551: reducing aperture size to " |
| 748 | "fit %dM\n", length >> 20); |
| 749 | priv->asize = asize = length; |
| 750 | } else if (asize == 0 || asize == length) { |
| 751 | printk(KERN_NOTICE "pmc551: Using existing aperture " |
| 752 | "size %dM\n", length >> 20); |
| 753 | priv->asize = asize = length; |
| 754 | } else { |
| 755 | printk(KERN_NOTICE "pmc551: Using specified aperture " |
| 756 | "size %dM\n", asize >> 20); |
| 757 | priv->asize = asize; |
| 758 | } |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 759 | priv->start = pci_iomap(PCI_Device, 0, priv->asize); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 760 | |
| 761 | if (!priv->start) { |
| 762 | printk(KERN_NOTICE "pmc551: Unable to map IO space\n"); |
| 763 | kfree(mtd->priv); |
| 764 | kfree(mtd); |
| 765 | break; |
| 766 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 768 | printk(KERN_DEBUG "pmc551: setting aperture to %d\n", |
| 769 | ffs(priv->asize >> 20) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | #endif |
| 771 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 772 | priv->base_map0 = (PMC551_PCI_MEM_MAP_REG_EN |
| 773 | | PMC551_PCI_MEM_MAP_ENABLE |
| 774 | | (ffs(priv->asize >> 20) - 1) << 4); |
| 775 | priv->curr_map0 = priv->base_map0; |
| 776 | pci_write_config_dword(priv->dev, PMC551_PCI_MEM_MAP0, |
| 777 | priv->curr_map0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | |
| 779 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 780 | printk(KERN_DEBUG "pmc551: aperture set to %d\n", |
| 781 | (priv->base_map0 & 0xF0) >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | #endif |
| 783 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 784 | mtd->size = msize; |
| 785 | mtd->flags = MTD_CAP_RAM; |
| 786 | mtd->erase = pmc551_erase; |
| 787 | mtd->read = pmc551_read; |
| 788 | mtd->write = pmc551_write; |
| 789 | mtd->point = pmc551_point; |
| 790 | mtd->unpoint = pmc551_unpoint; |
| 791 | mtd->type = MTD_RAM; |
| 792 | mtd->name = "PMC551 RAM board"; |
| 793 | mtd->erasesize = 0x10000; |
| 794 | mtd->writesize = 1; |
| 795 | mtd->owner = THIS_MODULE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 797 | if (add_mtd_device(mtd)) { |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 798 | printk(KERN_NOTICE "pmc551: Failed to register new device\n"); |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 799 | pci_iounmap(PCI_Device, priv->start); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 800 | kfree(mtd->priv); |
| 801 | kfree(mtd); |
| 802 | break; |
| 803 | } |
Alan Cox | dd8e9ed | 2006-09-22 10:19:20 +0100 | [diff] [blame] | 804 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 805 | /* Keep a reference as the add_mtd_device worked */ |
| 806 | pci_dev_get(PCI_Device); |
Alan Cox | dd8e9ed | 2006-09-22 10:19:20 +0100 | [diff] [blame] | 807 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 808 | printk(KERN_NOTICE "Registered pmc551 memory device.\n"); |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 809 | printk(KERN_NOTICE "Mapped %dMiB of memory from 0x%p to 0x%p\n", |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 810 | priv->asize >> 20, |
| 811 | priv->start, priv->start + priv->asize); |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 812 | printk(KERN_NOTICE "Total memory is %d%sB\n", |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 813 | (length < 1024) ? length : |
| 814 | (length < 1048576) ? length >> 10 : length >> 20, |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 815 | (length < 1024) ? "" : (length < 1048576) ? "Ki" : "Mi"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | priv->nextpmc551 = pmc551list; |
| 817 | pmc551list = mtd; |
| 818 | found++; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 819 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 821 | /* Exited early, reference left over */ |
| 822 | if (PCI_Device) |
| 823 | pci_dev_put(PCI_Device); |
Alan Cox | dd8e9ed | 2006-09-22 10:19:20 +0100 | [diff] [blame] | 824 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 825 | if (!pmc551list) { |
| 826 | printk(KERN_NOTICE "pmc551: not detected\n"); |
| 827 | return -ENODEV; |
| 828 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | printk(KERN_NOTICE "pmc551: %d pmc551 devices loaded\n", found); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 830 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | } |
| 832 | } |
| 833 | |
| 834 | /* |
| 835 | * PMC551 Card Cleanup |
| 836 | */ |
| 837 | static void __exit cleanup_pmc551(void) |
| 838 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 839 | int found = 0; |
| 840 | struct mtd_info *mtd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | struct mypriv *priv; |
| 842 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 843 | while ((mtd = pmc551list)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | priv = mtd->priv; |
| 845 | pmc551list = priv->nextpmc551; |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 846 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 847 | if (priv->start) { |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 848 | printk(KERN_DEBUG "pmc551: unmapping %dMiB starting at " |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 849 | "0x%p\n", priv->asize >> 20, priv->start); |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 850 | pci_iounmap(priv->dev, priv->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | } |
Alan Cox | dd8e9ed | 2006-09-22 10:19:20 +0100 | [diff] [blame] | 852 | pci_dev_put(priv->dev); |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 853 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 854 | kfree(mtd->priv); |
| 855 | del_mtd_device(mtd); |
| 856 | kfree(mtd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | found++; |
| 858 | } |
| 859 | |
| 860 | printk(KERN_NOTICE "pmc551: %d pmc551 devices unloaded\n", found); |
| 861 | } |
| 862 | |
| 863 | module_init(init_pmc551); |
| 864 | module_exit(cleanup_pmc551); |