Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * rsparser.c - parses and encodes pnpbios resource data streams |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | */ |
| 4 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | #include <linux/ctype.h> |
| 6 | #include <linux/pnp.h> |
| 7 | #include <linux/pnpbios.h> |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 8 | #include <linux/string.h> |
| 9 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
| 11 | #ifdef CONFIG_PCI |
| 12 | #include <linux/pci.h> |
| 13 | #else |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 14 | inline void pcibios_penalize_isa_irq(int irq, int active) |
| 15 | { |
| 16 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 17 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
Bjorn Helgaas | 772defc | 2008-04-28 16:33:52 -0600 | [diff] [blame] | 19 | #include "../base.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include "pnpbios.h" |
| 21 | |
| 22 | /* standard resource tags */ |
| 23 | #define SMALL_TAG_PNPVERNO 0x01 |
| 24 | #define SMALL_TAG_LOGDEVID 0x02 |
| 25 | #define SMALL_TAG_COMPATDEVID 0x03 |
| 26 | #define SMALL_TAG_IRQ 0x04 |
| 27 | #define SMALL_TAG_DMA 0x05 |
| 28 | #define SMALL_TAG_STARTDEP 0x06 |
| 29 | #define SMALL_TAG_ENDDEP 0x07 |
| 30 | #define SMALL_TAG_PORT 0x08 |
| 31 | #define SMALL_TAG_FIXEDPORT 0x09 |
| 32 | #define SMALL_TAG_VENDOR 0x0e |
| 33 | #define SMALL_TAG_END 0x0f |
| 34 | #define LARGE_TAG 0x80 |
| 35 | #define LARGE_TAG_MEM 0x81 |
| 36 | #define LARGE_TAG_ANSISTR 0x82 |
| 37 | #define LARGE_TAG_UNICODESTR 0x83 |
| 38 | #define LARGE_TAG_VENDOR 0x84 |
| 39 | #define LARGE_TAG_MEM32 0x85 |
| 40 | #define LARGE_TAG_FIXEDMEM32 0x86 |
| 41 | |
| 42 | /* |
| 43 | * Resource Data Stream Format: |
| 44 | * |
| 45 | * Allocated Resources (required) |
| 46 | * end tag -> |
| 47 | * Resource Configuration Options (optional) |
| 48 | * end tag -> |
| 49 | * Compitable Device IDs (optional) |
| 50 | * final end tag -> |
| 51 | */ |
| 52 | |
| 53 | /* |
| 54 | * Allocated Resources |
| 55 | */ |
| 56 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 57 | static void pnpbios_parse_allocated_ioresource(struct pnp_dev *dev, |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 58 | int io, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 60 | struct resource *res; |
| 61 | int i; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 62 | |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 63 | for (i = 0; i < PNP_MAX_PORT; i++) { |
| 64 | res = pnp_get_resource(dev, IORESOURCE_IO, i); |
| 65 | if (!pnp_resource_valid(res)) |
| 66 | break; |
| 67 | } |
| 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | if (i < PNP_MAX_PORT) { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 70 | res->flags = IORESOURCE_IO; // Also clears _UNSET flag |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 71 | if (len <= 0 || (io + len - 1) >= 0x10003) { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 72 | res->flags |= IORESOURCE_DISABLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | return; |
| 74 | } |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 75 | res->start = (unsigned long)io; |
| 76 | res->end = (unsigned long)(io + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | } |
| 78 | } |
| 79 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 80 | static void pnpbios_parse_allocated_memresource(struct pnp_dev *dev, |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 81 | int mem, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 83 | struct resource *res; |
| 84 | int i; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 85 | |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 86 | for (i = 0; i < PNP_MAX_MEM; i++) { |
| 87 | res = pnp_get_resource(dev, IORESOURCE_MEM, i); |
| 88 | if (!pnp_resource_valid(res)) |
| 89 | break; |
| 90 | } |
| 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | if (i < PNP_MAX_MEM) { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 93 | res->flags = IORESOURCE_MEM; // Also clears _UNSET flag |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | if (len <= 0) { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 95 | res->flags |= IORESOURCE_DISABLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | return; |
| 97 | } |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 98 | res->start = (unsigned long)mem; |
| 99 | res->end = (unsigned long)(mem + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | } |
| 102 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 103 | static unsigned char *pnpbios_parse_allocated_resource_data(struct pnp_dev *dev, |
| 104 | unsigned char *p, |
| 105 | unsigned char *end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | { |
| 107 | unsigned int len, tag; |
Bjorn Helgaas | dbddd03 | 2008-04-28 16:34:34 -0600 | [diff] [blame] | 108 | int io, size, mask, i, flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
| 110 | if (!p) |
| 111 | return NULL; |
| 112 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 113 | dev_dbg(&dev->dev, "parse allocated resources\n"); |
| 114 | |
Bjorn Helgaas | f449000 | 2008-04-28 16:34:09 -0600 | [diff] [blame] | 115 | pnp_init_resources(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | while ((char *)p < (char *)end) { |
| 118 | |
| 119 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 120 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | len = (p[2] << 8) | p[1]; |
| 122 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 123 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 125 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | switch (tag) { |
| 129 | |
| 130 | case LARGE_TAG_MEM: |
| 131 | if (len != 9) |
| 132 | goto len_err; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 133 | io = *(short *)&p[4]; |
| 134 | size = *(short *)&p[10]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 135 | pnpbios_parse_allocated_memresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | break; |
| 137 | |
| 138 | case LARGE_TAG_ANSISTR: |
| 139 | /* ignore this for now */ |
| 140 | break; |
| 141 | |
| 142 | case LARGE_TAG_VENDOR: |
| 143 | /* do nothing */ |
| 144 | break; |
| 145 | |
| 146 | case LARGE_TAG_MEM32: |
| 147 | if (len != 17) |
| 148 | goto len_err; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 149 | io = *(int *)&p[4]; |
| 150 | size = *(int *)&p[16]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 151 | pnpbios_parse_allocated_memresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | break; |
| 153 | |
| 154 | case LARGE_TAG_FIXEDMEM32: |
| 155 | if (len != 9) |
| 156 | goto len_err; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 157 | io = *(int *)&p[4]; |
| 158 | size = *(int *)&p[8]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 159 | pnpbios_parse_allocated_memresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | break; |
| 161 | |
| 162 | case SMALL_TAG_IRQ: |
| 163 | if (len < 2 || len > 3) |
| 164 | goto len_err; |
Bjorn Helgaas | dbddd03 | 2008-04-28 16:34:34 -0600 | [diff] [blame] | 165 | flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | io = -1; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 167 | mask = p[1] + p[2] * 256; |
| 168 | for (i = 0; i < 16; i++, mask = mask >> 1) |
| 169 | if (mask & 0x01) |
| 170 | io = i; |
Bjorn Helgaas | dbddd03 | 2008-04-28 16:34:34 -0600 | [diff] [blame] | 171 | if (io != -1) |
| 172 | pcibios_penalize_isa_irq(io, 1); |
| 173 | else |
| 174 | flags = IORESOURCE_DISABLED; |
| 175 | pnp_add_irq_resource(dev, io, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | break; |
| 177 | |
| 178 | case SMALL_TAG_DMA: |
| 179 | if (len != 2) |
| 180 | goto len_err; |
Bjorn Helgaas | dc16f5f | 2008-04-28 16:34:35 -0600 | [diff] [blame^] | 181 | flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | io = -1; |
| 183 | mask = p[1]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 184 | for (i = 0; i < 8; i++, mask = mask >> 1) |
| 185 | if (mask & 0x01) |
| 186 | io = i; |
Bjorn Helgaas | dc16f5f | 2008-04-28 16:34:35 -0600 | [diff] [blame^] | 187 | if (io == -1) |
| 188 | flags = IORESOURCE_DISABLED; |
| 189 | pnp_add_dma_resource(dev, io, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | break; |
| 191 | |
| 192 | case SMALL_TAG_PORT: |
| 193 | if (len != 7) |
| 194 | goto len_err; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 195 | io = p[2] + p[3] * 256; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | size = p[7]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 197 | pnpbios_parse_allocated_ioresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | break; |
| 199 | |
| 200 | case SMALL_TAG_VENDOR: |
| 201 | /* do nothing */ |
| 202 | break; |
| 203 | |
| 204 | case SMALL_TAG_FIXEDPORT: |
| 205 | if (len != 3) |
| 206 | goto len_err; |
| 207 | io = p[1] + p[2] * 256; |
| 208 | size = p[3]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 209 | pnpbios_parse_allocated_ioresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | break; |
| 211 | |
| 212 | case SMALL_TAG_END: |
| 213 | p = p + 2; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 214 | return (unsigned char *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | break; |
| 216 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 217 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 218 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 219 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 220 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | break; |
| 222 | } |
| 223 | |
| 224 | /* continue to the next tag */ |
| 225 | if (p[0] & LARGE_TAG) |
| 226 | p += len + 3; |
| 227 | else |
| 228 | p += len + 1; |
| 229 | } |
| 230 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 231 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
| 233 | return NULL; |
| 234 | } |
| 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | /* |
| 237 | * Resource Configuration Options |
| 238 | */ |
| 239 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 240 | static __init void pnpbios_parse_mem_option(struct pnp_dev *dev, |
| 241 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 242 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 244 | struct pnp_mem *mem; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 245 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 246 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | if (!mem) |
| 248 | return; |
| 249 | mem->min = ((p[5] << 8) | p[4]) << 8; |
| 250 | mem->max = ((p[7] << 8) | p[6]) << 8; |
| 251 | mem->align = (p[9] << 8) | p[8]; |
| 252 | mem->size = ((p[11] << 8) | p[10]) << 8; |
| 253 | mem->flags = p[3]; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 254 | pnp_register_mem_resource(dev, option, mem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | } |
| 256 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 257 | static __init void pnpbios_parse_mem32_option(struct pnp_dev *dev, |
| 258 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 259 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 261 | struct pnp_mem *mem; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 262 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 263 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | if (!mem) |
| 265 | return; |
| 266 | mem->min = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; |
| 267 | mem->max = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; |
| 268 | mem->align = (p[15] << 24) | (p[14] << 16) | (p[13] << 8) | p[12]; |
| 269 | mem->size = (p[19] << 24) | (p[18] << 16) | (p[17] << 8) | p[16]; |
| 270 | mem->flags = p[3]; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 271 | pnp_register_mem_resource(dev, option, mem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | } |
| 273 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 274 | static __init void pnpbios_parse_fixed_mem32_option(struct pnp_dev *dev, |
| 275 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 276 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 278 | struct pnp_mem *mem; |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 279 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 280 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | if (!mem) |
| 282 | return; |
| 283 | mem->min = mem->max = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; |
| 284 | mem->size = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; |
| 285 | mem->align = 0; |
| 286 | mem->flags = p[3]; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 287 | pnp_register_mem_resource(dev, option, mem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | } |
| 289 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 290 | static __init void pnpbios_parse_irq_option(struct pnp_dev *dev, |
| 291 | unsigned char *p, int size, |
| 292 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 294 | struct pnp_irq *irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | unsigned long bits; |
| 296 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 297 | irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | if (!irq) |
| 299 | return; |
| 300 | bits = (p[2] << 8) | p[1]; |
| 301 | bitmap_copy(irq->map, &bits, 16); |
| 302 | if (size > 2) |
| 303 | irq->flags = p[3]; |
| 304 | else |
| 305 | irq->flags = IORESOURCE_IRQ_HIGHEDGE; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 306 | pnp_register_irq_resource(dev, option, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | } |
| 308 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 309 | static __init void pnpbios_parse_dma_option(struct pnp_dev *dev, |
| 310 | unsigned char *p, int size, |
| 311 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 313 | struct pnp_dma *dma; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 314 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 315 | dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | if (!dma) |
| 317 | return; |
| 318 | dma->map = p[1]; |
| 319 | dma->flags = p[2]; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 320 | pnp_register_dma_resource(dev, option, dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | } |
| 322 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 323 | static __init void pnpbios_parse_port_option(struct pnp_dev *dev, |
| 324 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 325 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 327 | struct pnp_port *port; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 328 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 329 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | if (!port) |
| 331 | return; |
| 332 | port->min = (p[3] << 8) | p[2]; |
| 333 | port->max = (p[5] << 8) | p[4]; |
| 334 | port->align = p[6]; |
| 335 | port->size = p[7]; |
| 336 | port->flags = p[1] ? PNP_PORT_FLAG_16BITADDR : 0; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 337 | pnp_register_port_resource(dev, option, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
| 339 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 340 | static __init void pnpbios_parse_fixed_port_option(struct pnp_dev *dev, |
| 341 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 342 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 344 | struct pnp_port *port; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 345 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 346 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | if (!port) |
| 348 | return; |
| 349 | port->min = port->max = (p[2] << 8) | p[1]; |
| 350 | port->size = p[3]; |
| 351 | port->align = 0; |
| 352 | port->flags = PNP_PORT_FLAG_FIXED; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 353 | pnp_register_port_resource(dev, option, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | } |
| 355 | |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 356 | static __init unsigned char * |
| 357 | pnpbios_parse_resource_option_data(unsigned char *p, unsigned char *end, |
| 358 | struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | { |
| 360 | unsigned int len, tag; |
| 361 | int priority = 0; |
| 362 | struct pnp_option *option, *option_independent; |
| 363 | |
| 364 | if (!p) |
| 365 | return NULL; |
| 366 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 367 | dev_dbg(&dev->dev, "parse resource options\n"); |
| 368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | option_independent = option = pnp_register_independent_option(dev); |
| 370 | if (!option) |
| 371 | return NULL; |
| 372 | |
| 373 | while ((char *)p < (char *)end) { |
| 374 | |
| 375 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 376 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | len = (p[2] << 8) | p[1]; |
| 378 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 379 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 381 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | switch (tag) { |
| 385 | |
| 386 | case LARGE_TAG_MEM: |
| 387 | if (len != 9) |
| 388 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 389 | pnpbios_parse_mem_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | break; |
| 391 | |
| 392 | case LARGE_TAG_MEM32: |
| 393 | if (len != 17) |
| 394 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 395 | pnpbios_parse_mem32_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | break; |
| 397 | |
| 398 | case LARGE_TAG_FIXEDMEM32: |
| 399 | if (len != 9) |
| 400 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 401 | pnpbios_parse_fixed_mem32_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | break; |
| 403 | |
| 404 | case SMALL_TAG_IRQ: |
| 405 | if (len < 2 || len > 3) |
| 406 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 407 | pnpbios_parse_irq_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | break; |
| 409 | |
| 410 | case SMALL_TAG_DMA: |
| 411 | if (len != 2) |
| 412 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 413 | pnpbios_parse_dma_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | break; |
| 415 | |
| 416 | case SMALL_TAG_PORT: |
| 417 | if (len != 7) |
| 418 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 419 | pnpbios_parse_port_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | break; |
| 421 | |
| 422 | case SMALL_TAG_VENDOR: |
| 423 | /* do nothing */ |
| 424 | break; |
| 425 | |
| 426 | case SMALL_TAG_FIXEDPORT: |
| 427 | if (len != 3) |
| 428 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 429 | pnpbios_parse_fixed_port_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | break; |
| 431 | |
| 432 | case SMALL_TAG_STARTDEP: |
| 433 | if (len > 1) |
| 434 | goto len_err; |
| 435 | priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; |
| 436 | if (len > 0) |
| 437 | priority = 0x100 | p[1]; |
| 438 | option = pnp_register_dependent_option(dev, priority); |
| 439 | if (!option) |
| 440 | return NULL; |
| 441 | break; |
| 442 | |
| 443 | case SMALL_TAG_ENDDEP: |
| 444 | if (len != 0) |
| 445 | goto len_err; |
| 446 | if (option_independent == option) |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 447 | dev_warn(&dev->dev, "missing " |
| 448 | "SMALL_TAG_STARTDEP tag\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | option = option_independent; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 450 | dev_dbg(&dev->dev, "end dependent options\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | break; |
| 452 | |
| 453 | case SMALL_TAG_END: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 454 | return p + 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 456 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 457 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 458 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 459 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | break; |
| 461 | } |
| 462 | |
| 463 | /* continue to the next tag */ |
| 464 | if (p[0] & LARGE_TAG) |
| 465 | p += len + 3; |
| 466 | else |
| 467 | p += len + 1; |
| 468 | } |
| 469 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 470 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
| 472 | return NULL; |
| 473 | } |
| 474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | /* |
| 476 | * Compatible Device IDs |
| 477 | */ |
| 478 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 479 | static unsigned char *pnpbios_parse_compatible_ids(unsigned char *p, |
| 480 | unsigned char *end, |
| 481 | struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | { |
| 483 | int len, tag; |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 484 | u32 eisa_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | char id[8]; |
| 486 | struct pnp_id *dev_id; |
| 487 | |
| 488 | if (!p) |
| 489 | return NULL; |
| 490 | |
| 491 | while ((char *)p < (char *)end) { |
| 492 | |
| 493 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 494 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | len = (p[2] << 8) | p[1]; |
| 496 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 497 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 499 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | switch (tag) { |
| 503 | |
| 504 | case LARGE_TAG_ANSISTR: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 505 | strncpy(dev->name, p + 3, |
| 506 | len >= PNP_NAME_LEN ? PNP_NAME_LEN - 2 : len); |
| 507 | dev->name[len >= |
| 508 | PNP_NAME_LEN ? PNP_NAME_LEN - 1 : len] = '\0'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | break; |
| 510 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 511 | case SMALL_TAG_COMPATDEVID: /* compatible ID */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | if (len != 4) |
| 513 | goto len_err; |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 514 | eisa_id = p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24; |
| 515 | pnp_eisa_id_to_string(eisa_id & PNP_EISA_ID_MASK, id); |
Bjorn Helgaas | 772defc | 2008-04-28 16:33:52 -0600 | [diff] [blame] | 516 | dev_id = pnp_add_id(dev, id); |
| 517 | if (!dev_id) |
| 518 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | break; |
| 520 | |
| 521 | case SMALL_TAG_END: |
| 522 | p = p + 2; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 523 | return (unsigned char *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | break; |
| 525 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 526 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 527 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 528 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 529 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | break; |
| 531 | } |
| 532 | |
| 533 | /* continue to the next tag */ |
| 534 | if (p[0] & LARGE_TAG) |
| 535 | p += len + 3; |
| 536 | else |
| 537 | p += len + 1; |
| 538 | } |
| 539 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 540 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
| 542 | return NULL; |
| 543 | } |
| 544 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | /* |
| 546 | * Allocated Resource Encoding |
| 547 | */ |
| 548 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 549 | static void pnpbios_encode_mem(struct pnp_dev *dev, unsigned char *p, |
| 550 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | { |
| 552 | unsigned long base = res->start; |
| 553 | unsigned long len = res->end - res->start + 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 554 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | p[4] = (base >> 8) & 0xff; |
| 556 | p[5] = ((base >> 8) >> 8) & 0xff; |
| 557 | p[6] = (base >> 8) & 0xff; |
| 558 | p[7] = ((base >> 8) >> 8) & 0xff; |
| 559 | p[10] = (len >> 8) & 0xff; |
| 560 | p[11] = ((len >> 8) >> 8) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 561 | |
| 562 | dev_dbg(&dev->dev, " encode mem %#llx-%#llx\n", |
| 563 | (unsigned long long) res->start, (unsigned long long) res->end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | } |
| 565 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 566 | static void pnpbios_encode_mem32(struct pnp_dev *dev, unsigned char *p, |
| 567 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | { |
| 569 | unsigned long base = res->start; |
| 570 | unsigned long len = res->end - res->start + 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 571 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | p[4] = base & 0xff; |
| 573 | p[5] = (base >> 8) & 0xff; |
| 574 | p[6] = (base >> 16) & 0xff; |
| 575 | p[7] = (base >> 24) & 0xff; |
| 576 | p[8] = base & 0xff; |
| 577 | p[9] = (base >> 8) & 0xff; |
| 578 | p[10] = (base >> 16) & 0xff; |
| 579 | p[11] = (base >> 24) & 0xff; |
| 580 | p[16] = len & 0xff; |
| 581 | p[17] = (len >> 8) & 0xff; |
| 582 | p[18] = (len >> 16) & 0xff; |
| 583 | p[19] = (len >> 24) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 584 | |
| 585 | dev_dbg(&dev->dev, " encode mem32 %#llx-%#llx\n", |
| 586 | (unsigned long long) res->start, (unsigned long long) res->end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | } |
| 588 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 589 | static void pnpbios_encode_fixed_mem32(struct pnp_dev *dev, unsigned char *p, |
| 590 | struct resource *res) |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 591 | { |
| 592 | unsigned long base = res->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | unsigned long len = res->end - res->start + 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 594 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | p[4] = base & 0xff; |
| 596 | p[5] = (base >> 8) & 0xff; |
| 597 | p[6] = (base >> 16) & 0xff; |
| 598 | p[7] = (base >> 24) & 0xff; |
| 599 | p[8] = len & 0xff; |
| 600 | p[9] = (len >> 8) & 0xff; |
| 601 | p[10] = (len >> 16) & 0xff; |
| 602 | p[11] = (len >> 24) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 603 | |
| 604 | dev_dbg(&dev->dev, " encode fixed_mem32 %#llx-%#llx\n", |
| 605 | (unsigned long long) res->start, (unsigned long long) res->end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | } |
| 607 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 608 | static void pnpbios_encode_irq(struct pnp_dev *dev, unsigned char *p, |
| 609 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | { |
| 611 | unsigned long map = 0; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 612 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | map = 1 << res->start; |
| 614 | p[1] = map & 0xff; |
| 615 | p[2] = (map >> 8) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 616 | |
| 617 | dev_dbg(&dev->dev, " encode irq %d\n", res->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | } |
| 619 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 620 | static void pnpbios_encode_dma(struct pnp_dev *dev, unsigned char *p, |
| 621 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | { |
| 623 | unsigned long map = 0; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | map = 1 << res->start; |
| 626 | p[1] = map & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 627 | |
| 628 | dev_dbg(&dev->dev, " encode dma %d\n", res->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | } |
| 630 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 631 | static void pnpbios_encode_port(struct pnp_dev *dev, unsigned char *p, |
| 632 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | { |
| 634 | unsigned long base = res->start; |
| 635 | unsigned long len = res->end - res->start + 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 636 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | p[2] = base & 0xff; |
| 638 | p[3] = (base >> 8) & 0xff; |
| 639 | p[4] = base & 0xff; |
| 640 | p[5] = (base >> 8) & 0xff; |
| 641 | p[7] = len & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 642 | |
| 643 | dev_dbg(&dev->dev, " encode io %#llx-%#llx\n", |
| 644 | (unsigned long long) res->start, (unsigned long long) res->end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | } |
| 646 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 647 | static void pnpbios_encode_fixed_port(struct pnp_dev *dev, unsigned char *p, |
| 648 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | { |
| 650 | unsigned long base = res->start; |
| 651 | unsigned long len = res->end - res->start + 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 652 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | p[1] = base & 0xff; |
| 654 | p[2] = (base >> 8) & 0xff; |
| 655 | p[3] = len & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 656 | |
| 657 | dev_dbg(&dev->dev, " encode fixed_io %#llx-%#llx\n", |
| 658 | (unsigned long long) res->start, (unsigned long long) res->end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | } |
| 660 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 661 | static unsigned char *pnpbios_encode_allocated_resource_data(struct pnp_dev |
| 662 | *dev, |
| 663 | unsigned char *p, |
| 664 | unsigned char *end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | { |
| 666 | unsigned int len, tag; |
| 667 | int port = 0, irq = 0, dma = 0, mem = 0; |
| 668 | |
| 669 | if (!p) |
| 670 | return NULL; |
| 671 | |
| 672 | while ((char *)p < (char *)end) { |
| 673 | |
| 674 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 675 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | len = (p[2] << 8) | p[1]; |
| 677 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 678 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 680 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | } |
| 682 | |
| 683 | switch (tag) { |
| 684 | |
| 685 | case LARGE_TAG_MEM: |
| 686 | if (len != 9) |
| 687 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 688 | pnpbios_encode_mem(dev, p, |
| 689 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | mem++; |
| 691 | break; |
| 692 | |
| 693 | case LARGE_TAG_MEM32: |
| 694 | if (len != 17) |
| 695 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 696 | pnpbios_encode_mem32(dev, p, |
| 697 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | mem++; |
| 699 | break; |
| 700 | |
| 701 | case LARGE_TAG_FIXEDMEM32: |
| 702 | if (len != 9) |
| 703 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 704 | pnpbios_encode_fixed_mem32(dev, p, |
| 705 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | mem++; |
| 707 | break; |
| 708 | |
| 709 | case SMALL_TAG_IRQ: |
| 710 | if (len < 2 || len > 3) |
| 711 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 712 | pnpbios_encode_irq(dev, p, |
| 713 | pnp_get_resource(dev, IORESOURCE_IRQ, irq)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | irq++; |
| 715 | break; |
| 716 | |
| 717 | case SMALL_TAG_DMA: |
| 718 | if (len != 2) |
| 719 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 720 | pnpbios_encode_dma(dev, p, |
| 721 | pnp_get_resource(dev, IORESOURCE_DMA, dma)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | dma++; |
| 723 | break; |
| 724 | |
| 725 | case SMALL_TAG_PORT: |
| 726 | if (len != 7) |
| 727 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 728 | pnpbios_encode_port(dev, p, |
| 729 | pnp_get_resource(dev, IORESOURCE_IO, port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | port++; |
| 731 | break; |
| 732 | |
| 733 | case SMALL_TAG_VENDOR: |
| 734 | /* do nothing */ |
| 735 | break; |
| 736 | |
| 737 | case SMALL_TAG_FIXEDPORT: |
| 738 | if (len != 3) |
| 739 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 740 | pnpbios_encode_fixed_port(dev, p, |
| 741 | pnp_get_resource(dev, IORESOURCE_IO, port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | port++; |
| 743 | break; |
| 744 | |
| 745 | case SMALL_TAG_END: |
| 746 | p = p + 2; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 747 | return (unsigned char *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | break; |
| 749 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 750 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 751 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 752 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 753 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | break; |
| 755 | } |
| 756 | |
| 757 | /* continue to the next tag */ |
| 758 | if (p[0] & LARGE_TAG) |
| 759 | p += len + 3; |
| 760 | else |
| 761 | p += len + 1; |
| 762 | } |
| 763 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 764 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | |
| 766 | return NULL; |
| 767 | } |
| 768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | /* |
| 770 | * Core Parsing Functions |
| 771 | */ |
| 772 | |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 773 | int __init pnpbios_parse_data_stream(struct pnp_dev *dev, |
| 774 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 776 | unsigned char *p = (char *)node->data; |
| 777 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 778 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 779 | p = pnpbios_parse_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | if (!p) |
| 781 | return -EIO; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 782 | p = pnpbios_parse_resource_option_data(p, end, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | if (!p) |
| 784 | return -EIO; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 785 | p = pnpbios_parse_compatible_ids(p, end, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | if (!p) |
| 787 | return -EIO; |
| 788 | return 0; |
| 789 | } |
| 790 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 791 | int pnpbios_read_resources_from_node(struct pnp_dev *dev, |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 792 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 794 | unsigned char *p = (char *)node->data; |
| 795 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 796 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 797 | p = pnpbios_parse_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | if (!p) |
| 799 | return -EIO; |
| 800 | return 0; |
| 801 | } |
| 802 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 803 | int pnpbios_write_resources_to_node(struct pnp_dev *dev, |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 804 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 806 | unsigned char *p = (char *)node->data; |
| 807 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 808 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 809 | p = pnpbios_encode_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | if (!p) |
| 811 | return -EIO; |
| 812 | return 0; |
| 813 | } |