Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * PMC551 PCI Mezzanine Ram Device |
| 3 | * |
| 4 | * Author: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 5 | * Mark Ferrell <mferrell@mvista.com> |
| 6 | * Copyright 1999,2000 Nortel Networks |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * License: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 9 | * As part of this driver was derived from the slram.c driver it |
| 10 | * falls under the same license, which is GNU General Public |
| 11 | * License v2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | * |
| 13 | * Description: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 14 | * This driver is intended to support the PMC551 PCI Ram device |
| 15 | * from Ramix Inc. The PMC551 is a PMC Mezzanine module for |
| 16 | * cPCI embedded systems. The device contains a single SROM |
| 17 | * that initially programs the V370PDC chipset onboard the |
| 18 | * device, and various banks of DRAM/SDRAM onboard. This driver |
| 19 | * implements this PCI Ram device as an MTD (Memory Technology |
| 20 | * Device) so that it can be used to hold a file system, or for |
| 21 | * added swap space in embedded systems. Since the memory on |
| 22 | * this board isn't as fast as main memory we do not try to hook |
| 23 | * it into main memory as that would simply reduce performance |
| 24 | * on the system. Using it as a block device allows us to use |
| 25 | * it as high speed swap or for a high speed disk device of some |
| 26 | * sort. Which becomes very useful on diskless systems in the |
| 27 | * embedded market I might add. |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 28 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | * Notes: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 30 | * 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] | 31 | * have available claims that all 4 of its DRAM banks have 64MiB |
| 32 | * of ram configured (making a grand total of 256MiB onboard). |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 33 | * This is slightly annoying since the BAR0 size reflects the |
| 34 | * aperture size, not the dram size, and the V370PDC supplies no |
| 35 | * other method for memory size discovery. This problem is |
| 36 | * mostly only relevant when compiled as a module, as the |
Frederik Schwarzer | 025dfda | 2008-10-16 19:02:37 +0200 | [diff] [blame] | 37 | * unloading of the module with an aperture size smaller than |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 38 | * the ram will cause the driver to detect the onboard memory |
| 39 | * size to be equal to the aperture size when the module is |
| 40 | * reloaded. Soooo, to help, the module supports an msize |
| 41 | * option to allow the specification of the onboard memory, and |
| 42 | * an asize option, to allow the specification of the aperture |
| 43 | * size. The aperture must be equal to or less then the memory |
| 44 | * size, the driver will correct this if you screw it up. This |
| 45 | * problem is not relevant for compiled in drivers as compiled |
| 46 | * in drivers only init once. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | * |
| 48 | * Credits: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 49 | * Saeed Karamooz <saeed@ramix.com> of Ramix INC. for the |
| 50 | * initial example code of how to initialize this device and for |
| 51 | * help with questions I had concerning operation of the device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | * |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 53 | * Most of the MTD code for this driver was originally written |
| 54 | * for the slram.o module in the MTD drivers package which |
| 55 | * allows the mapping of system memory into an MTD device. |
| 56 | * Since the PMC551 memory module is accessed in the same |
| 57 | * fashion as system memory, the slram.c code became a very nice |
| 58 | * fit to the needs of this driver. All we added was PCI |
| 59 | * detection/initialization to the driver and automatically figure |
| 60 | * out the size via the PCI detection.o, later changes by Corey |
| 61 | * Minyard set up the card to utilize a 1M sliding apature. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | * |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 63 | * Corey Minyard <minyard@nortelnetworks.com> |
| 64 | * * Modified driver to utilize a sliding aperture instead of |
| 65 | * mapping all memory into kernel space which turned out to |
| 66 | * be very wasteful. |
| 67 | * * Located a bug in the SROM's initialization sequence that |
| 68 | * made the memory unusable, added a fix to code to touch up |
| 69 | * the DRAM some. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | * |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 71 | * Bugs/FIXMEs: |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 72 | * * MUST fix the init function to not spin on a register |
| 73 | * waiting for it to set .. this does not safely handle busted |
| 74 | * devices that never reset the register correctly which will |
| 75 | * cause the system to hang w/ a reboot being the only chance at |
| 76 | * recover. [sort of fixed, could be better] |
| 77 | * * Add I2C handling of the SROM so we can read the SROM's information |
| 78 | * about the aperture size. This should always accurately reflect the |
| 79 | * onboard memory size. |
| 80 | * * 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] | 81 | */ |
| 82 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #include <linux/kernel.h> |
| 84 | #include <linux/module.h> |
| 85 | #include <asm/uaccess.h> |
| 86 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | #include <linux/init.h> |
| 88 | #include <linux/ptrace.h> |
| 89 | #include <linux/slab.h> |
| 90 | #include <linux/string.h> |
| 91 | #include <linux/timer.h> |
| 92 | #include <linux/major.h> |
| 93 | #include <linux/fs.h> |
| 94 | #include <linux/ioctl.h> |
| 95 | #include <asm/io.h> |
| 96 | #include <asm/system.h> |
| 97 | #include <linux/pci.h> |
| 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | #include <linux/mtd/mtd.h> |
| 100 | #include <linux/mtd/pmc551.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
| 102 | static struct mtd_info *pmc551list; |
| 103 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 104 | static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 106 | struct mypriv *priv = mtd->priv; |
| 107 | u32 soff_hi, soff_lo; /* start address offset hi/lo */ |
| 108 | u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ |
| 109 | unsigned long end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | u_char *ptr; |
| 111 | size_t retlen; |
| 112 | |
| 113 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 114 | printk(KERN_DEBUG "pmc551_erase(pos:%ld, len:%ld)\n", (long)instr->addr, |
| 115 | (long)instr->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | #endif |
| 117 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 118 | end = instr->addr + instr->len - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 120 | /* Is it past the end? */ |
| 121 | if (end > mtd->size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 123 | printk(KERN_DEBUG "pmc551_erase() out of bounds (%ld > %ld)\n", |
| 124 | (long)end, (long)mtd->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 126 | return -EINVAL; |
| 127 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 129 | eoff_hi = end & ~(priv->asize - 1); |
| 130 | soff_hi = instr->addr & ~(priv->asize - 1); |
| 131 | eoff_lo = end & (priv->asize - 1); |
| 132 | soff_lo = instr->addr & (priv->asize - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 134 | pmc551_point(mtd, instr->addr, instr->len, &retlen, |
| 135 | (void **)&ptr, NULL); |
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 | if (soff_hi == eoff_hi || mtd->size == priv->asize) { |
| 138 | /* The whole thing fits within one access, so just one shot |
| 139 | will do it. */ |
| 140 | memset(ptr, 0xff, instr->len); |
| 141 | } else { |
| 142 | /* We have to do multiple writes to get all the data |
| 143 | written. */ |
| 144 | while (soff_hi != eoff_hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 146 | printk(KERN_DEBUG "pmc551_erase() soff_hi: %ld, " |
| 147 | "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 149 | memset(ptr, 0xff, priv->asize); |
| 150 | if (soff_hi + priv->asize >= mtd->size) { |
| 151 | goto out; |
| 152 | } |
| 153 | soff_hi += priv->asize; |
| 154 | pmc551_point(mtd, (priv->base_map0 | soff_hi), |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 155 | priv->asize, &retlen, |
| 156 | (void **)&ptr, NULL); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 157 | } |
| 158 | memset(ptr, 0xff, eoff_lo); |
| 159 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 161 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | instr->state = MTD_ERASE_DONE; |
| 163 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 164 | printk(KERN_DEBUG "pmc551_erase() done\n"); |
| 165 | #endif |
| 166 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 167 | mtd_erase_callback(instr); |
| 168 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | } |
| 170 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 171 | static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len, |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 172 | size_t *retlen, void **virt, resource_size_t *phys) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 174 | struct mypriv *priv = mtd->priv; |
| 175 | u32 soff_hi; |
| 176 | u32 soff_lo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
| 178 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 179 | printk(KERN_DEBUG "pmc551_point(%ld, %ld)\n", (long)from, (long)len); |
| 180 | #endif |
| 181 | |
| 182 | if (from + len > mtd->size) { |
| 183 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 184 | printk(KERN_DEBUG "pmc551_point() out of bounds (%ld > %ld)\n", |
| 185 | (long)from + len, (long)mtd->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | #endif |
| 187 | return -EINVAL; |
| 188 | } |
| 189 | |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 190 | /* can we return a physical address with this driver? */ |
| 191 | if (phys) |
| 192 | return -EINVAL; |
| 193 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 194 | soff_hi = from & ~(priv->asize - 1); |
| 195 | soff_lo = from & (priv->asize - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
| 197 | /* Cheap hack optimization */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 198 | if (priv->curr_map0 != from) { |
| 199 | pci_write_config_dword(priv->dev, PMC551_PCI_MEM_MAP0, |
| 200 | (priv->base_map0 | soff_hi)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | priv->curr_map0 = soff_hi; |
| 202 | } |
| 203 | |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 204 | *virt = priv->start + soff_lo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | *retlen = len; |
| 206 | return 0; |
| 207 | } |
| 208 | |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 209 | static void pmc551_unpoint(struct mtd_info *mtd, loff_t from, size_t len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | { |
| 211 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 212 | printk(KERN_DEBUG "pmc551_unpoint()\n"); |
| 213 | #endif |
| 214 | } |
| 215 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 216 | static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len, |
| 217 | size_t * retlen, u_char * buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 219 | struct mypriv *priv = mtd->priv; |
| 220 | u32 soff_hi, soff_lo; /* start address offset hi/lo */ |
| 221 | u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ |
| 222 | unsigned long end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | u_char *ptr; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 224 | u_char *copyto = buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
| 226 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 227 | printk(KERN_DEBUG "pmc551_read(pos:%ld, len:%ld) asize: %ld\n", |
| 228 | (long)from, (long)len, (long)priv->asize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | #endif |
| 230 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 231 | end = from + len - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 233 | /* Is it past the end? */ |
| 234 | if (end > mtd->size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 236 | printk(KERN_DEBUG "pmc551_read() out of bounds (%ld > %ld)\n", |
| 237 | (long)end, (long)mtd->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 239 | return -EINVAL; |
| 240 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 242 | soff_hi = from & ~(priv->asize - 1); |
| 243 | eoff_hi = end & ~(priv->asize - 1); |
| 244 | soff_lo = from & (priv->asize - 1); |
| 245 | eoff_lo = end & (priv->asize - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 247 | pmc551_point(mtd, from, len, retlen, (void **)&ptr, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 249 | if (soff_hi == eoff_hi) { |
| 250 | /* The whole thing fits within one access, so just one shot |
| 251 | will do it. */ |
| 252 | memcpy(copyto, ptr, len); |
| 253 | copyto += len; |
| 254 | } else { |
| 255 | /* We have to do multiple writes to get all the data |
| 256 | written. */ |
| 257 | while (soff_hi != eoff_hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 259 | printk(KERN_DEBUG "pmc551_read() soff_hi: %ld, " |
| 260 | "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 262 | memcpy(copyto, ptr, priv->asize); |
| 263 | copyto += priv->asize; |
| 264 | if (soff_hi + priv->asize >= mtd->size) { |
| 265 | goto out; |
| 266 | } |
| 267 | soff_hi += priv->asize; |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 268 | pmc551_point(mtd, soff_hi, priv->asize, retlen, |
| 269 | (void **)&ptr, NULL); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 270 | } |
| 271 | memcpy(copyto, ptr, eoff_lo); |
| 272 | copyto += eoff_lo; |
| 273 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 275 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 277 | printk(KERN_DEBUG "pmc551_read() done\n"); |
| 278 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 279 | *retlen = copyto - buf; |
| 280 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | } |
| 282 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 283 | static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len, |
| 284 | size_t * retlen, const u_char * buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 286 | struct mypriv *priv = mtd->priv; |
| 287 | u32 soff_hi, soff_lo; /* start address offset hi/lo */ |
| 288 | u32 eoff_hi, eoff_lo; /* end address offset hi/lo */ |
| 289 | unsigned long end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | u_char *ptr; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 291 | const u_char *copyfrom = buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
| 293 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 294 | printk(KERN_DEBUG "pmc551_write(pos:%ld, len:%ld) asize:%ld\n", |
| 295 | (long)to, (long)len, (long)priv->asize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | #endif |
| 297 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 298 | end = to + len - 1; |
| 299 | /* Is it past the end? or did the u32 wrap? */ |
| 300 | if (end > mtd->size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 302 | printk(KERN_DEBUG "pmc551_write() out of bounds (end: %ld, " |
| 303 | "size: %ld, to: %ld)\n", (long)end, (long)mtd->size, |
| 304 | (long)to); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 306 | return -EINVAL; |
| 307 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 309 | soff_hi = to & ~(priv->asize - 1); |
| 310 | eoff_hi = end & ~(priv->asize - 1); |
| 311 | soff_lo = to & (priv->asize - 1); |
| 312 | eoff_lo = end & (priv->asize - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 314 | pmc551_point(mtd, to, len, retlen, (void **)&ptr, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 316 | if (soff_hi == eoff_hi) { |
| 317 | /* The whole thing fits within one access, so just one shot |
| 318 | will do it. */ |
| 319 | memcpy(ptr, copyfrom, len); |
| 320 | copyfrom += len; |
| 321 | } else { |
| 322 | /* We have to do multiple writes to get all the data |
| 323 | written. */ |
| 324 | while (soff_hi != eoff_hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 326 | printk(KERN_DEBUG "pmc551_write() soff_hi: %ld, " |
| 327 | "eoff_hi: %ld\n", (long)soff_hi, (long)eoff_hi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 329 | memcpy(ptr, copyfrom, priv->asize); |
| 330 | copyfrom += priv->asize; |
| 331 | if (soff_hi >= mtd->size) { |
| 332 | goto out; |
| 333 | } |
| 334 | soff_hi += priv->asize; |
Jared Hulbert | a98889f | 2008-04-29 23:26:49 -0700 | [diff] [blame] | 335 | pmc551_point(mtd, soff_hi, priv->asize, retlen, |
| 336 | (void **)&ptr, NULL); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 337 | } |
| 338 | memcpy(ptr, copyfrom, eoff_lo); |
| 339 | copyfrom += eoff_lo; |
| 340 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 342 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | #ifdef CONFIG_MTD_PMC551_DEBUG |
| 344 | printk(KERN_DEBUG "pmc551_write() done\n"); |
| 345 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 346 | *retlen = copyfrom - buf; |
| 347 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | /* |
| 351 | * Fixup routines for the V370PDC |
| 352 | * PCI device ID 0x020011b0 |
| 353 | * |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 354 | * This function basically kick starts the DRAM oboard the card and gets it |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | * ready to be used. Before this is done the device reads VERY erratic, so |
| 356 | * much that it can crash the Linux 2.2.x series kernels when a user cat's |
| 357 | * /proc/pci .. though that is mainly a kernel bug in handling the PCI DEVSEL |
| 358 | * register. FIXME: stop spinning on registers .. must implement a timeout |
| 359 | * mechanism |
| 360 | * returns the size of the memory region found. |
| 361 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 362 | static u32 fixup_pmc551(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
| 364 | #ifdef CONFIG_MTD_PMC551_BUGFIX |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 365 | u32 dram_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 367 | u32 size, dcmd, cfg, dtmp; |
| 368 | u16 cmd, tmp, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | u8 bcmd, counter; |
| 370 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 371 | /* Sanity Check */ |
| 372 | if (!dev) { |
| 373 | return -ENODEV; |
| 374 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
| 376 | /* |
| 377 | * Attempt to reset the card |
| 378 | * FIXME: Stop Spinning registers |
| 379 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 380 | counter = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | /* unlock registers */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 382 | pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, 0xA5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | /* read in old data */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 384 | pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | /* bang the reset line up and down for a few */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 386 | for (i = 0; i < 10; i++) { |
| 387 | counter = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | bcmd &= ~0x80; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 389 | while (counter++ < 100) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd); |
| 391 | } |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 392 | counter = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | bcmd |= 0x80; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 394 | while (counter++ < 100) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd); |
| 396 | } |
| 397 | } |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 398 | bcmd |= (0x40 | 0x20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | pci_write_config_byte(dev, PMC551_SYS_CTRL_REG, bcmd); |
| 400 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 401 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | * Take care and turn off the memory on the device while we |
| 403 | * tweak the configurations |
| 404 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 405 | pci_read_config_word(dev, PCI_COMMAND, &cmd); |
| 406 | tmp = cmd & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY); |
| 407 | pci_write_config_word(dev, PCI_COMMAND, tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
| 409 | /* |
| 410 | * Disable existing aperture before probing memory size |
| 411 | */ |
| 412 | pci_read_config_dword(dev, PMC551_PCI_MEM_MAP0, &dcmd); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 413 | 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] | 414 | pci_write_config_dword(dev, PMC551_PCI_MEM_MAP0, dtmp); |
| 415 | /* |
| 416 | * Grab old BAR0 config so that we can figure out memory size |
| 417 | * This is another bit of kludge going on. The reason for the |
| 418 | * redundancy is I am hoping to retain the original configuration |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 419 | * previously assigned to the card by the BIOS or some previous |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | * fixup routine in the kernel. So we read the old config into cfg, |
| 421 | * then write all 1's to the memory space, read back the result into |
| 422 | * "size", and then write back all the old config. |
| 423 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 424 | pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &cfg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | #ifndef CONFIG_MTD_PMC551_BUGFIX |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 426 | pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, ~0); |
| 427 | pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &size); |
| 428 | size = (size & PCI_BASE_ADDRESS_MEM_MASK); |
| 429 | size &= ~(size - 1); |
| 430 | pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, cfg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | #else |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 432 | /* |
| 433 | * Get the size of the memory by reading all the DRAM size values |
| 434 | * and adding them up. |
| 435 | * |
| 436 | * KLUDGE ALERT: the boards we are using have invalid column and |
| 437 | * row mux values. We fix them here, but this will break other |
| 438 | * memory configurations. |
| 439 | */ |
| 440 | pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dram_data); |
| 441 | size = PMC551_DRAM_BLK_GET_SIZE(dram_data); |
| 442 | dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5); |
| 443 | dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); |
| 444 | pci_write_config_dword(dev, PMC551_DRAM_BLK0, dram_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 446 | pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dram_data); |
| 447 | size += PMC551_DRAM_BLK_GET_SIZE(dram_data); |
| 448 | dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5); |
| 449 | dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); |
| 450 | pci_write_config_dword(dev, PMC551_DRAM_BLK1, dram_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 452 | pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dram_data); |
| 453 | size += PMC551_DRAM_BLK_GET_SIZE(dram_data); |
| 454 | dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5); |
| 455 | dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); |
| 456 | pci_write_config_dword(dev, PMC551_DRAM_BLK2, dram_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 458 | pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dram_data); |
| 459 | size += PMC551_DRAM_BLK_GET_SIZE(dram_data); |
| 460 | dram_data = PMC551_DRAM_BLK_SET_COL_MUX(dram_data, 0x5); |
| 461 | dram_data = PMC551_DRAM_BLK_SET_ROW_MUX(dram_data, 0x9); |
| 462 | pci_write_config_dword(dev, PMC551_DRAM_BLK3, dram_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 464 | /* |
| 465 | * Oops .. something went wrong |
| 466 | */ |
| 467 | if ((size &= PCI_BASE_ADDRESS_MEM_MASK) == 0) { |
| 468 | return -ENODEV; |
| 469 | } |
| 470 | #endif /* CONFIG_MTD_PMC551_BUGFIX */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 472 | if ((cfg & PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) { |
| 473 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | } |
| 475 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 476 | /* |
| 477 | * Precharge Dram |
| 478 | */ |
| 479 | pci_write_config_word(dev, PMC551_SDRAM_MA, 0x0400); |
| 480 | pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x00bf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 482 | /* |
| 483 | * Wait until command has gone through |
| 484 | * FIXME: register spinning issue |
| 485 | */ |
| 486 | do { |
| 487 | pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd); |
| 488 | if (counter++ > 100) |
| 489 | break; |
| 490 | } while ((PCI_COMMAND_IO) & cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 492 | /* |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 493 | * Turn on auto refresh |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | * The loop is taken directly from Ramix's example code. I assume that |
| 495 | * this must be held high for some duration of time, but I can find no |
| 496 | * documentation refrencing the reasons why. |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 497 | */ |
| 498 | for (i = 1; i <= 8; i++) { |
| 499 | pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x0df); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 501 | /* |
| 502 | * Make certain command has gone through |
| 503 | * FIXME: register spinning issue |
| 504 | */ |
| 505 | counter = 0; |
| 506 | do { |
| 507 | pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd); |
| 508 | if (counter++ > 100) |
| 509 | break; |
| 510 | } while ((PCI_COMMAND_IO) & cmd); |
| 511 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 513 | pci_write_config_word(dev, PMC551_SDRAM_MA, 0x0020); |
| 514 | pci_write_config_word(dev, PMC551_SDRAM_CMD, 0x0ff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 516 | /* |
| 517 | * Wait until command completes |
| 518 | * FIXME: register spinning issue |
| 519 | */ |
| 520 | counter = 0; |
| 521 | do { |
| 522 | pci_read_config_word(dev, PMC551_SDRAM_CMD, &cmd); |
| 523 | if (counter++ > 100) |
| 524 | break; |
| 525 | } while ((PCI_COMMAND_IO) & cmd); |
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 | pci_read_config_dword(dev, PMC551_DRAM_CFG, &dcmd); |
| 528 | dcmd |= 0x02000000; |
| 529 | pci_write_config_dword(dev, PMC551_DRAM_CFG, dcmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 531 | /* |
| 532 | * Check to make certain fast back-to-back, if not |
| 533 | * then set it so |
| 534 | */ |
| 535 | pci_read_config_word(dev, PCI_STATUS, &cmd); |
| 536 | if ((cmd & PCI_COMMAND_FAST_BACK) == 0) { |
| 537 | cmd |= PCI_COMMAND_FAST_BACK; |
| 538 | pci_write_config_word(dev, PCI_STATUS, cmd); |
| 539 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 541 | /* |
| 542 | * Check to make certain the DEVSEL is set correctly, this device |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 543 | * has a tendency to assert DEVSEL and TRDY when a write is performed |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 544 | * to the memory when memory is read-only |
| 545 | */ |
| 546 | if ((cmd & PCI_STATUS_DEVSEL_MASK) != 0x0) { |
| 547 | cmd &= ~PCI_STATUS_DEVSEL_MASK; |
| 548 | pci_write_config_word(dev, PCI_STATUS, cmd); |
| 549 | } |
| 550 | /* |
| 551 | * Set to be prefetchable and put everything back based on old cfg. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | * it's possible that the reset of the V370PDC nuked the original |
| 553 | * setup |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 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 | cfg |= PCI_BASE_ADDRESS_MEM_PREFETCH; |
| 557 | pci_write_config_dword( dev, PCI_BASE_ADDRESS_0, cfg ); |
| 558 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 560 | /* |
| 561 | * Turn PCI memory and I/O bus access back on |
| 562 | */ |
| 563 | pci_write_config_word(dev, PCI_COMMAND, |
| 564 | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 566 | /* |
| 567 | * Some screen fun |
| 568 | */ |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 569 | printk(KERN_DEBUG "pmc551: %d%sB (0x%x) of %sprefetchable memory at " |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 570 | "0x%llx\n", (size < 1024) ? size : (size < 1048576) ? |
| 571 | size >> 10 : size >> 20, |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 572 | (size < 1024) ? "" : (size < 1048576) ? "Ki" : "Mi", size, |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 573 | ((dcmd & (0x1 << 3)) == 0) ? "non-" : "", |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 574 | (unsigned long long)pci_resource_start(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 576 | /* |
| 577 | * Check to see the state of the memory |
| 578 | */ |
| 579 | pci_read_config_dword(dev, PMC551_DRAM_BLK0, &dcmd); |
| 580 | printk(KERN_DEBUG "pmc551: DRAM_BLK0 Flags: %s,%s\n" |
| 581 | "pmc551: DRAM_BLK0 Size: %d at %d\n" |
| 582 | "pmc551: DRAM_BLK0 Row MUX: %d, Col MUX: %d\n", |
| 583 | (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO", |
| 584 | (((0x1 << 0) & dcmd) == 0) ? "Off" : "On", |
| 585 | PMC551_DRAM_BLK_GET_SIZE(dcmd), |
| 586 | ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7), |
| 587 | ((dcmd >> 9) & 0xF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 589 | pci_read_config_dword(dev, PMC551_DRAM_BLK1, &dcmd); |
| 590 | printk(KERN_DEBUG "pmc551: DRAM_BLK1 Flags: %s,%s\n" |
| 591 | "pmc551: DRAM_BLK1 Size: %d at %d\n" |
| 592 | "pmc551: DRAM_BLK1 Row MUX: %d, Col MUX: %d\n", |
| 593 | (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO", |
| 594 | (((0x1 << 0) & dcmd) == 0) ? "Off" : "On", |
| 595 | PMC551_DRAM_BLK_GET_SIZE(dcmd), |
| 596 | ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7), |
| 597 | ((dcmd >> 9) & 0xF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 599 | pci_read_config_dword(dev, PMC551_DRAM_BLK2, &dcmd); |
| 600 | printk(KERN_DEBUG "pmc551: DRAM_BLK2 Flags: %s,%s\n" |
| 601 | "pmc551: DRAM_BLK2 Size: %d at %d\n" |
| 602 | "pmc551: DRAM_BLK2 Row MUX: %d, Col MUX: %d\n", |
| 603 | (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO", |
| 604 | (((0x1 << 0) & dcmd) == 0) ? "Off" : "On", |
| 605 | PMC551_DRAM_BLK_GET_SIZE(dcmd), |
| 606 | ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7), |
| 607 | ((dcmd >> 9) & 0xF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 609 | pci_read_config_dword(dev, PMC551_DRAM_BLK3, &dcmd); |
| 610 | printk(KERN_DEBUG "pmc551: DRAM_BLK3 Flags: %s,%s\n" |
| 611 | "pmc551: DRAM_BLK3 Size: %d at %d\n" |
| 612 | "pmc551: DRAM_BLK3 Row MUX: %d, Col MUX: %d\n", |
| 613 | (((0x1 << 1) & dcmd) == 0) ? "RW" : "RO", |
| 614 | (((0x1 << 0) & dcmd) == 0) ? "Off" : "On", |
| 615 | PMC551_DRAM_BLK_GET_SIZE(dcmd), |
| 616 | ((dcmd >> 20) & 0x7FF), ((dcmd >> 13) & 0x7), |
| 617 | ((dcmd >> 9) & 0xF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 619 | pci_read_config_word(dev, PCI_COMMAND, &cmd); |
| 620 | printk(KERN_DEBUG "pmc551: Memory Access %s\n", |
| 621 | (((0x1 << 1) & cmd) == 0) ? "off" : "on"); |
| 622 | printk(KERN_DEBUG "pmc551: I/O Access %s\n", |
| 623 | (((0x1 << 0) & cmd) == 0) ? "off" : "on"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 625 | pci_read_config_word(dev, PCI_STATUS, &cmd); |
| 626 | printk(KERN_DEBUG "pmc551: Devsel %s\n", |
| 627 | ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x000) ? "Fast" : |
| 628 | ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x200) ? "Medium" : |
| 629 | ((PCI_STATUS_DEVSEL_MASK & cmd) == 0x400) ? "Slow" : "Invalid"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 631 | printk(KERN_DEBUG "pmc551: %sFast Back-to-Back\n", |
| 632 | ((PCI_COMMAND_FAST_BACK & cmd) == 0) ? "Not " : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 634 | pci_read_config_byte(dev, PMC551_SYS_CTRL_REG, &bcmd); |
| 635 | printk(KERN_DEBUG "pmc551: EEPROM is under %s control\n" |
| 636 | "pmc551: System Control Register is %slocked to PCI access\n" |
| 637 | "pmc551: System Control Register is %slocked to EEPROM access\n", |
| 638 | (bcmd & 0x1) ? "software" : "hardware", |
| 639 | (bcmd & 0x20) ? "" : "un", (bcmd & 0x40) ? "" : "un"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | #endif |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 641 | return size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
| 643 | |
| 644 | /* |
| 645 | * Kernel version specific module stuffages |
| 646 | */ |
| 647 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | MODULE_LICENSE("GPL"); |
| 649 | MODULE_AUTHOR("Mark Ferrell <mferrell@mvista.com>"); |
| 650 | MODULE_DESCRIPTION(PMC551_VERSION); |
| 651 | |
| 652 | /* |
| 653 | * Stuff these outside the ifdef so as to not bust compiled in driver support |
| 654 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 655 | static int msize = 0; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 656 | static int asize = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | |
| 658 | module_param(msize, int, 0); |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 659 | MODULE_PARM_DESC(msize, "memory size in MiB [1 - 1024]"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | module_param(asize, int, 0); |
| 661 | MODULE_PARM_DESC(asize, "aperture size, must be <= memsize [1-1024]"); |
| 662 | |
| 663 | /* |
| 664 | * PMC551 Card Initialization |
| 665 | */ |
| 666 | static int __init init_pmc551(void) |
| 667 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 668 | struct pci_dev *PCI_Device = NULL; |
| 669 | struct mypriv *priv; |
Ben Hutchings | 24c1549 | 2010-01-29 20:58:23 +0000 | [diff] [blame] | 670 | int found = 0; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 671 | struct mtd_info *mtd; |
| 672 | u32 length = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 674 | if (msize) { |
| 675 | msize = (1 << (ffs(msize) - 1)) << 20; |
| 676 | if (msize > (1 << 30)) { |
| 677 | printk(KERN_NOTICE "pmc551: Invalid memory size [%d]\n", |
| 678 | msize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | return -EINVAL; |
| 680 | } |
| 681 | } |
| 682 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 683 | if (asize) { |
| 684 | asize = (1 << (ffs(asize) - 1)) << 20; |
| 685 | if (asize > (1 << 30)) { |
| 686 | printk(KERN_NOTICE "pmc551: Invalid aperture size " |
| 687 | "[%d]\n", asize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | return -EINVAL; |
| 689 | } |
| 690 | } |
| 691 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 692 | printk(KERN_INFO PMC551_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 694 | /* |
| 695 | * PCU-bus chipset probe. |
| 696 | */ |
Ben Hutchings | 24c1549 | 2010-01-29 20:58:23 +0000 | [diff] [blame] | 697 | for (;;) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 699 | if ((PCI_Device = pci_get_device(PCI_VENDOR_ID_V3_SEMI, |
| 700 | PCI_DEVICE_ID_V3_SEMI_V370PDC, |
| 701 | PCI_Device)) == NULL) { |
| 702 | break; |
| 703 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 705 | printk(KERN_NOTICE "pmc551: Found PCI V370PDC at 0x%llx\n", |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 706 | (unsigned long long)pci_resource_start(PCI_Device, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 708 | /* |
| 709 | * The PMC551 device acts VERY weird if you don't init it |
| 710 | * first. i.e. it will not correctly report devsel. If for |
| 711 | * some reason the sdram is in a wrote-protected state the |
| 712 | * device will DEVSEL when it is written to causing problems |
| 713 | * with the oldproc.c driver in |
| 714 | * some kernels (2.2.*) |
| 715 | */ |
| 716 | if ((length = fixup_pmc551(PCI_Device)) <= 0) { |
| 717 | printk(KERN_NOTICE "pmc551: Cannot init SDRAM\n"); |
| 718 | break; |
| 719 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | |
| 721 | /* |
| 722 | * This is needed until the driver is capable of reading the |
| 723 | * onboard I2C SROM to discover the "real" memory size. |
| 724 | */ |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 725 | if (msize) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | length = msize; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 727 | printk(KERN_NOTICE "pmc551: Using specified memory " |
| 728 | "size 0x%x\n", length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | } else { |
| 730 | msize = length; |
| 731 | } |
| 732 | |
Jiri Slaby | 7fefb92 | 2006-09-19 21:55:18 +0200 | [diff] [blame] | 733 | mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 734 | if (!mtd) { |
| 735 | printk(KERN_NOTICE "pmc551: Cannot allocate new MTD " |
| 736 | "device.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | break; |
| 738 | } |
| 739 | |
Jiri Slaby | 7fefb92 | 2006-09-19 21:55:18 +0200 | [diff] [blame] | 740 | priv = kzalloc(sizeof(struct mypriv), GFP_KERNEL); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 741 | if (!priv) { |
| 742 | printk(KERN_NOTICE "pmc551: Cannot allocate new MTD " |
| 743 | "device.\n"); |
| 744 | kfree(mtd); |
| 745 | break; |
| 746 | } |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 747 | mtd->priv = priv; |
| 748 | priv->dev = PCI_Device; |
| 749 | |
| 750 | if (asize > length) { |
| 751 | printk(KERN_NOTICE "pmc551: reducing aperture size to " |
| 752 | "fit %dM\n", length >> 20); |
| 753 | priv->asize = asize = length; |
| 754 | } else if (asize == 0 || asize == length) { |
| 755 | printk(KERN_NOTICE "pmc551: Using existing aperture " |
| 756 | "size %dM\n", length >> 20); |
| 757 | priv->asize = asize = length; |
| 758 | } else { |
| 759 | printk(KERN_NOTICE "pmc551: Using specified aperture " |
| 760 | "size %dM\n", asize >> 20); |
| 761 | priv->asize = asize; |
| 762 | } |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 763 | priv->start = pci_iomap(PCI_Device, 0, priv->asize); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 764 | |
| 765 | if (!priv->start) { |
| 766 | printk(KERN_NOTICE "pmc551: Unable to map IO space\n"); |
| 767 | kfree(mtd->priv); |
| 768 | kfree(mtd); |
| 769 | break; |
| 770 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 772 | printk(KERN_DEBUG "pmc551: setting aperture to %d\n", |
| 773 | ffs(priv->asize >> 20) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | #endif |
| 775 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 776 | priv->base_map0 = (PMC551_PCI_MEM_MAP_REG_EN |
| 777 | | PMC551_PCI_MEM_MAP_ENABLE |
| 778 | | (ffs(priv->asize >> 20) - 1) << 4); |
| 779 | priv->curr_map0 = priv->base_map0; |
| 780 | pci_write_config_dword(priv->dev, PMC551_PCI_MEM_MAP0, |
| 781 | priv->curr_map0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | |
| 783 | #ifdef CONFIG_MTD_PMC551_DEBUG |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 784 | printk(KERN_DEBUG "pmc551: aperture set to %d\n", |
| 785 | (priv->base_map0 & 0xF0) >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | #endif |
| 787 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 788 | mtd->size = msize; |
| 789 | mtd->flags = MTD_CAP_RAM; |
| 790 | mtd->erase = pmc551_erase; |
| 791 | mtd->read = pmc551_read; |
| 792 | mtd->write = pmc551_write; |
| 793 | mtd->point = pmc551_point; |
| 794 | mtd->unpoint = pmc551_unpoint; |
| 795 | mtd->type = MTD_RAM; |
| 796 | mtd->name = "PMC551 RAM board"; |
| 797 | mtd->erasesize = 0x10000; |
| 798 | mtd->writesize = 1; |
| 799 | mtd->owner = THIS_MODULE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 801 | if (add_mtd_device(mtd)) { |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 802 | printk(KERN_NOTICE "pmc551: Failed to register new device\n"); |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 803 | pci_iounmap(PCI_Device, priv->start); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 804 | kfree(mtd->priv); |
| 805 | kfree(mtd); |
| 806 | break; |
| 807 | } |
Alan Cox | dd8e9ed | 2006-09-22 10:19:20 +0100 | [diff] [blame] | 808 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 809 | /* Keep a reference as the add_mtd_device worked */ |
| 810 | pci_dev_get(PCI_Device); |
Alan Cox | dd8e9ed | 2006-09-22 10:19:20 +0100 | [diff] [blame] | 811 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 812 | printk(KERN_NOTICE "Registered pmc551 memory device.\n"); |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 813 | 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] | 814 | priv->asize >> 20, |
| 815 | priv->start, priv->start + priv->asize); |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 816 | printk(KERN_NOTICE "Total memory is %d%sB\n", |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 817 | (length < 1024) ? length : |
| 818 | (length < 1048576) ? length >> 10 : length >> 20, |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 819 | (length < 1024) ? "" : (length < 1048576) ? "Ki" : "Mi"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | priv->nextpmc551 = pmc551list; |
| 821 | pmc551list = mtd; |
| 822 | found++; |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 823 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 825 | /* Exited early, reference left over */ |
| 826 | if (PCI_Device) |
| 827 | pci_dev_put(PCI_Device); |
Alan Cox | dd8e9ed | 2006-09-22 10:19:20 +0100 | [diff] [blame] | 828 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 829 | if (!pmc551list) { |
| 830 | printk(KERN_NOTICE "pmc551: not detected\n"); |
| 831 | return -ENODEV; |
| 832 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | printk(KERN_NOTICE "pmc551: %d pmc551 devices loaded\n", found); |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 834 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | } |
| 836 | } |
| 837 | |
| 838 | /* |
| 839 | * PMC551 Card Cleanup |
| 840 | */ |
| 841 | static void __exit cleanup_pmc551(void) |
| 842 | { |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 843 | int found = 0; |
| 844 | struct mtd_info *mtd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | struct mypriv *priv; |
| 846 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 847 | while ((mtd = pmc551list)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | priv = mtd->priv; |
| 849 | pmc551list = priv->nextpmc551; |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 850 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 851 | if (priv->start) { |
David Woodhouse | 8e0aedc | 2007-06-29 14:18:22 +0100 | [diff] [blame] | 852 | printk(KERN_DEBUG "pmc551: unmapping %dMiB starting at " |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 853 | "0x%p\n", priv->asize >> 20, priv->start); |
Jiri Slaby | 98aacdf | 2006-09-19 21:55:28 +0200 | [diff] [blame] | 854 | pci_iounmap(priv->dev, priv->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | } |
Alan Cox | dd8e9ed | 2006-09-22 10:19:20 +0100 | [diff] [blame] | 856 | pci_dev_put(priv->dev); |
Thomas Gleixner | e5580fb | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 857 | |
Jiri Slaby | cdf0a7d | 2006-09-19 21:55:06 +0200 | [diff] [blame] | 858 | kfree(mtd->priv); |
| 859 | del_mtd_device(mtd); |
| 860 | kfree(mtd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | found++; |
| 862 | } |
| 863 | |
| 864 | printk(KERN_NOTICE "pmc551: %d pmc551 devices unloaded\n", found); |
| 865 | } |
| 866 | |
| 867 | module_init(init_pmc551); |
| 868 | module_exit(cleanup_pmc551); |