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> |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 7 | #include <linux/string.h> |
| 8 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | |
| 10 | #ifdef CONFIG_PCI |
| 11 | #include <linux/pci.h> |
| 12 | #else |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 13 | inline void pcibios_penalize_isa_irq(int irq, int active) |
| 14 | { |
| 15 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 16 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
Bjorn Helgaas | 772defc | 2008-04-28 16:33:52 -0600 | [diff] [blame] | 18 | #include "../base.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include "pnpbios.h" |
| 20 | |
| 21 | /* standard resource tags */ |
| 22 | #define SMALL_TAG_PNPVERNO 0x01 |
| 23 | #define SMALL_TAG_LOGDEVID 0x02 |
| 24 | #define SMALL_TAG_COMPATDEVID 0x03 |
| 25 | #define SMALL_TAG_IRQ 0x04 |
| 26 | #define SMALL_TAG_DMA 0x05 |
| 27 | #define SMALL_TAG_STARTDEP 0x06 |
| 28 | #define SMALL_TAG_ENDDEP 0x07 |
| 29 | #define SMALL_TAG_PORT 0x08 |
| 30 | #define SMALL_TAG_FIXEDPORT 0x09 |
| 31 | #define SMALL_TAG_VENDOR 0x0e |
| 32 | #define SMALL_TAG_END 0x0f |
| 33 | #define LARGE_TAG 0x80 |
| 34 | #define LARGE_TAG_MEM 0x81 |
| 35 | #define LARGE_TAG_ANSISTR 0x82 |
| 36 | #define LARGE_TAG_UNICODESTR 0x83 |
| 37 | #define LARGE_TAG_VENDOR 0x84 |
| 38 | #define LARGE_TAG_MEM32 0x85 |
| 39 | #define LARGE_TAG_FIXEDMEM32 0x86 |
| 40 | |
| 41 | /* |
| 42 | * Resource Data Stream Format: |
| 43 | * |
| 44 | * Allocated Resources (required) |
| 45 | * end tag -> |
| 46 | * Resource Configuration Options (optional) |
| 47 | * end tag -> |
| 48 | * Compitable Device IDs (optional) |
| 49 | * final end tag -> |
| 50 | */ |
| 51 | |
| 52 | /* |
| 53 | * Allocated Resources |
| 54 | */ |
| 55 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 56 | static void pnpbios_parse_allocated_ioresource(struct pnp_dev *dev, |
Bjorn Helgaas | cc8c2e3 | 2008-04-28 16:34:36 -0600 | [diff] [blame] | 57 | int start, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | { |
Bjorn Helgaas | cc8c2e3 | 2008-04-28 16:34:36 -0600 | [diff] [blame] | 59 | int flags = 0; |
| 60 | int end = start + len - 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 61 | |
Bjorn Helgaas | cc8c2e3 | 2008-04-28 16:34:36 -0600 | [diff] [blame] | 62 | if (len <= 0 || end >= 0x10003) |
| 63 | flags |= IORESOURCE_DISABLED; |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 64 | |
Bjorn Helgaas | cc8c2e3 | 2008-04-28 16:34:36 -0600 | [diff] [blame] | 65 | pnp_add_io_resource(dev, start, end, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | } |
| 67 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 68 | static void pnpbios_parse_allocated_memresource(struct pnp_dev *dev, |
Bjorn Helgaas | d6180f3 | 2008-04-28 16:34:37 -0600 | [diff] [blame] | 69 | int start, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | { |
Bjorn Helgaas | d6180f3 | 2008-04-28 16:34:37 -0600 | [diff] [blame] | 71 | int flags = 0; |
| 72 | int end = start + len - 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 73 | |
Bjorn Helgaas | d6180f3 | 2008-04-28 16:34:37 -0600 | [diff] [blame] | 74 | if (len <= 0) |
| 75 | flags |= IORESOURCE_DISABLED; |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 76 | |
Bjorn Helgaas | d6180f3 | 2008-04-28 16:34:37 -0600 | [diff] [blame] | 77 | pnp_add_mem_resource(dev, start, end, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | } |
| 79 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 80 | static unsigned char *pnpbios_parse_allocated_resource_data(struct pnp_dev *dev, |
| 81 | unsigned char *p, |
| 82 | unsigned char *end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | { |
| 84 | unsigned int len, tag; |
Bjorn Helgaas | dbddd03 | 2008-04-28 16:34:34 -0600 | [diff] [blame] | 85 | int io, size, mask, i, flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | if (!p) |
| 88 | return NULL; |
| 89 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 90 | pnp_dbg(&dev->dev, "parse allocated resources\n"); |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 91 | |
Bjorn Helgaas | f449000 | 2008-04-28 16:34:09 -0600 | [diff] [blame] | 92 | pnp_init_resources(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
| 94 | while ((char *)p < (char *)end) { |
| 95 | |
| 96 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 97 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | len = (p[2] << 8) | p[1]; |
| 99 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 100 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 102 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | switch (tag) { |
| 106 | |
| 107 | case LARGE_TAG_MEM: |
| 108 | if (len != 9) |
| 109 | goto len_err; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 110 | io = *(short *)&p[4]; |
| 111 | size = *(short *)&p[10]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 112 | pnpbios_parse_allocated_memresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | break; |
| 114 | |
| 115 | case LARGE_TAG_ANSISTR: |
| 116 | /* ignore this for now */ |
| 117 | break; |
| 118 | |
| 119 | case LARGE_TAG_VENDOR: |
| 120 | /* do nothing */ |
| 121 | break; |
| 122 | |
| 123 | case LARGE_TAG_MEM32: |
| 124 | if (len != 17) |
| 125 | goto len_err; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 126 | io = *(int *)&p[4]; |
| 127 | size = *(int *)&p[16]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 128 | pnpbios_parse_allocated_memresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | break; |
| 130 | |
| 131 | case LARGE_TAG_FIXEDMEM32: |
| 132 | if (len != 9) |
| 133 | goto len_err; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 134 | io = *(int *)&p[4]; |
| 135 | size = *(int *)&p[8]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 136 | pnpbios_parse_allocated_memresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | break; |
| 138 | |
| 139 | case SMALL_TAG_IRQ: |
| 140 | if (len < 2 || len > 3) |
| 141 | goto len_err; |
Bjorn Helgaas | dbddd03 | 2008-04-28 16:34:34 -0600 | [diff] [blame] | 142 | flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | io = -1; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 144 | mask = p[1] + p[2] * 256; |
| 145 | for (i = 0; i < 16; i++, mask = mask >> 1) |
| 146 | if (mask & 0x01) |
| 147 | io = i; |
Bjorn Helgaas | dbddd03 | 2008-04-28 16:34:34 -0600 | [diff] [blame] | 148 | if (io != -1) |
| 149 | pcibios_penalize_isa_irq(io, 1); |
| 150 | else |
| 151 | flags = IORESOURCE_DISABLED; |
| 152 | pnp_add_irq_resource(dev, io, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | break; |
| 154 | |
| 155 | case SMALL_TAG_DMA: |
| 156 | if (len != 2) |
| 157 | goto len_err; |
Bjorn Helgaas | dc16f5f | 2008-04-28 16:34:35 -0600 | [diff] [blame] | 158 | flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | io = -1; |
| 160 | mask = p[1]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 161 | for (i = 0; i < 8; i++, mask = mask >> 1) |
| 162 | if (mask & 0x01) |
| 163 | io = i; |
Bjorn Helgaas | dc16f5f | 2008-04-28 16:34:35 -0600 | [diff] [blame] | 164 | if (io == -1) |
| 165 | flags = IORESOURCE_DISABLED; |
| 166 | pnp_add_dma_resource(dev, io, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | break; |
| 168 | |
| 169 | case SMALL_TAG_PORT: |
| 170 | if (len != 7) |
| 171 | goto len_err; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 172 | io = p[2] + p[3] * 256; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | size = p[7]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 174 | pnpbios_parse_allocated_ioresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | break; |
| 176 | |
| 177 | case SMALL_TAG_VENDOR: |
| 178 | /* do nothing */ |
| 179 | break; |
| 180 | |
| 181 | case SMALL_TAG_FIXEDPORT: |
| 182 | if (len != 3) |
| 183 | goto len_err; |
| 184 | io = p[1] + p[2] * 256; |
| 185 | size = p[3]; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 186 | pnpbios_parse_allocated_ioresource(dev, io, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | break; |
| 188 | |
| 189 | case SMALL_TAG_END: |
| 190 | p = p + 2; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 191 | return (unsigned char *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | break; |
| 193 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 194 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 195 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 196 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 197 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | break; |
| 199 | } |
| 200 | |
| 201 | /* continue to the next tag */ |
| 202 | if (p[0] & LARGE_TAG) |
| 203 | p += len + 3; |
| 204 | else |
| 205 | p += len + 1; |
| 206 | } |
| 207 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 208 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
| 210 | return NULL; |
| 211 | } |
| 212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | /* |
| 214 | * Resource Configuration Options |
| 215 | */ |
| 216 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 217 | static __init void pnpbios_parse_mem_option(struct pnp_dev *dev, |
| 218 | unsigned char *p, int size, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 219 | unsigned int option_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 221 | resource_size_t min, max, align, len; |
| 222 | unsigned char flags; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 223 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 224 | min = ((p[5] << 8) | p[4]) << 8; |
| 225 | max = ((p[7] << 8) | p[6]) << 8; |
| 226 | align = (p[9] << 8) | p[8]; |
| 227 | len = ((p[11] << 8) | p[10]) << 8; |
| 228 | flags = p[3]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 229 | pnp_register_mem_resource(dev, option_flags, min, max, align, len, |
| 230 | flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | } |
| 232 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 233 | static __init void pnpbios_parse_mem32_option(struct pnp_dev *dev, |
| 234 | unsigned char *p, int size, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 235 | unsigned int option_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 237 | resource_size_t min, max, align, len; |
| 238 | unsigned char flags; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 239 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 240 | min = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; |
| 241 | max = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; |
| 242 | align = (p[15] << 24) | (p[14] << 16) | (p[13] << 8) | p[12]; |
| 243 | len = (p[19] << 24) | (p[18] << 16) | (p[17] << 8) | p[16]; |
| 244 | flags = p[3]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 245 | pnp_register_mem_resource(dev, option_flags, min, max, align, len, |
| 246 | flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | } |
| 248 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 249 | static __init void pnpbios_parse_fixed_mem32_option(struct pnp_dev *dev, |
| 250 | unsigned char *p, int size, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 251 | unsigned int option_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 253 | resource_size_t base, len; |
| 254 | unsigned char flags; |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 255 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 256 | base = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; |
| 257 | len = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; |
| 258 | flags = p[3]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 259 | pnp_register_mem_resource(dev, option_flags, base, base, 0, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } |
| 261 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 262 | static __init void pnpbios_parse_irq_option(struct pnp_dev *dev, |
| 263 | unsigned char *p, int size, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 264 | unsigned int option_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | unsigned long bits; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 267 | pnp_irq_mask_t map; |
| 268 | unsigned char flags = IORESOURCE_IRQ_HIGHEDGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | bits = (p[2] << 8) | p[1]; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 271 | |
| 272 | bitmap_zero(map.bits, PNP_IRQ_NR); |
| 273 | bitmap_copy(map.bits, &bits, 16); |
| 274 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | if (size > 2) |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 276 | flags = p[3]; |
| 277 | |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 278 | pnp_register_irq_resource(dev, option_flags, &map, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | } |
| 280 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 281 | static __init void pnpbios_parse_dma_option(struct pnp_dev *dev, |
| 282 | unsigned char *p, int size, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 283 | unsigned int option_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | { |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 285 | pnp_register_dma_resource(dev, option_flags, p[1], p[2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | } |
| 287 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 288 | static __init void pnpbios_parse_port_option(struct pnp_dev *dev, |
| 289 | unsigned char *p, int size, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 290 | unsigned int option_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 292 | resource_size_t min, max, align, len; |
| 293 | unsigned char flags; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 294 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 295 | min = (p[3] << 8) | p[2]; |
| 296 | max = (p[5] << 8) | p[4]; |
| 297 | align = p[6]; |
| 298 | len = p[7]; |
| 299 | flags = p[1] ? IORESOURCE_IO_16BIT_ADDR : 0; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 300 | pnp_register_port_resource(dev, option_flags, min, max, align, len, |
| 301 | flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | } |
| 303 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 304 | static __init void pnpbios_parse_fixed_port_option(struct pnp_dev *dev, |
| 305 | unsigned char *p, int size, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 306 | unsigned int option_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 308 | resource_size_t base, len; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 309 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 310 | base = (p[2] << 8) | p[1]; |
| 311 | len = p[3]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 312 | pnp_register_port_resource(dev, option_flags, base, base, 0, len, |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 313 | IORESOURCE_IO_FIXED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 316 | static __init unsigned char * |
| 317 | pnpbios_parse_resource_option_data(unsigned char *p, unsigned char *end, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 318 | struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | { |
| 320 | unsigned int len, tag; |
Bjorn Helgaas | e2a1a6f | 2008-06-27 16:57:15 -0600 | [diff] [blame] | 321 | int priority; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 322 | unsigned int option_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | |
| 324 | if (!p) |
| 325 | return NULL; |
| 326 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 327 | pnp_dbg(&dev->dev, "parse resource options\n"); |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 328 | option_flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | while ((char *)p < (char *)end) { |
| 330 | |
| 331 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 332 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | len = (p[2] << 8) | p[1]; |
| 334 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 335 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 337 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | switch (tag) { |
| 341 | |
| 342 | case LARGE_TAG_MEM: |
| 343 | if (len != 9) |
| 344 | goto len_err; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 345 | pnpbios_parse_mem_option(dev, p, len, option_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | break; |
| 347 | |
| 348 | case LARGE_TAG_MEM32: |
| 349 | if (len != 17) |
| 350 | goto len_err; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 351 | pnpbios_parse_mem32_option(dev, p, len, option_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | break; |
| 353 | |
| 354 | case LARGE_TAG_FIXEDMEM32: |
| 355 | if (len != 9) |
| 356 | goto len_err; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 357 | pnpbios_parse_fixed_mem32_option(dev, p, len, |
| 358 | option_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | break; |
| 360 | |
| 361 | case SMALL_TAG_IRQ: |
| 362 | if (len < 2 || len > 3) |
| 363 | goto len_err; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 364 | pnpbios_parse_irq_option(dev, p, len, option_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | break; |
| 366 | |
| 367 | case SMALL_TAG_DMA: |
| 368 | if (len != 2) |
| 369 | goto len_err; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 370 | pnpbios_parse_dma_option(dev, p, len, option_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | break; |
| 372 | |
| 373 | case SMALL_TAG_PORT: |
| 374 | if (len != 7) |
| 375 | goto len_err; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 376 | pnpbios_parse_port_option(dev, p, len, option_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | break; |
| 378 | |
| 379 | case SMALL_TAG_VENDOR: |
| 380 | /* do nothing */ |
| 381 | break; |
| 382 | |
| 383 | case SMALL_TAG_FIXEDPORT: |
| 384 | if (len != 3) |
| 385 | goto len_err; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 386 | pnpbios_parse_fixed_port_option(dev, p, len, |
| 387 | option_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | break; |
| 389 | |
| 390 | case SMALL_TAG_STARTDEP: |
| 391 | if (len > 1) |
| 392 | goto len_err; |
Bjorn Helgaas | e2a1a6f | 2008-06-27 16:57:15 -0600 | [diff] [blame] | 393 | priority = PNP_RES_PRIORITY_ACCEPTABLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | if (len > 0) |
Bjorn Helgaas | e2a1a6f | 2008-06-27 16:57:15 -0600 | [diff] [blame] | 395 | priority = p[1]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 396 | option_flags = pnp_new_dependent_set(dev, priority); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | break; |
| 398 | |
| 399 | case SMALL_TAG_ENDDEP: |
| 400 | if (len != 0) |
| 401 | goto len_err; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 402 | option_flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | break; |
| 404 | |
| 405 | case SMALL_TAG_END: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 406 | return p + 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 408 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 409 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 410 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 411 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | break; |
| 413 | } |
| 414 | |
| 415 | /* continue to the next tag */ |
| 416 | if (p[0] & LARGE_TAG) |
| 417 | p += len + 3; |
| 418 | else |
| 419 | p += len + 1; |
| 420 | } |
| 421 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 422 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | |
| 424 | return NULL; |
| 425 | } |
| 426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | /* |
| 428 | * Compatible Device IDs |
| 429 | */ |
| 430 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 431 | static unsigned char *pnpbios_parse_compatible_ids(unsigned char *p, |
| 432 | unsigned char *end, |
| 433 | struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | { |
| 435 | int len, tag; |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 436 | u32 eisa_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | char id[8]; |
| 438 | struct pnp_id *dev_id; |
| 439 | |
| 440 | if (!p) |
| 441 | return NULL; |
| 442 | |
| 443 | while ((char *)p < (char *)end) { |
| 444 | |
| 445 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 446 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | len = (p[2] << 8) | p[1]; |
| 448 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 449 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 451 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | switch (tag) { |
| 455 | |
| 456 | case LARGE_TAG_ANSISTR: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 457 | strncpy(dev->name, p + 3, |
| 458 | len >= PNP_NAME_LEN ? PNP_NAME_LEN - 2 : len); |
| 459 | dev->name[len >= |
| 460 | PNP_NAME_LEN ? PNP_NAME_LEN - 1 : len] = '\0'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | break; |
| 462 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 463 | case SMALL_TAG_COMPATDEVID: /* compatible ID */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | if (len != 4) |
| 465 | goto len_err; |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 466 | eisa_id = p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24; |
| 467 | pnp_eisa_id_to_string(eisa_id & PNP_EISA_ID_MASK, id); |
Bjorn Helgaas | 772defc | 2008-04-28 16:33:52 -0600 | [diff] [blame] | 468 | dev_id = pnp_add_id(dev, id); |
| 469 | if (!dev_id) |
| 470 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | break; |
| 472 | |
| 473 | case SMALL_TAG_END: |
| 474 | p = p + 2; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 475 | return (unsigned char *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | break; |
| 477 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 478 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 479 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 480 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 481 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | break; |
| 483 | } |
| 484 | |
| 485 | /* continue to the next tag */ |
| 486 | if (p[0] & LARGE_TAG) |
| 487 | p += len + 3; |
| 488 | else |
| 489 | p += len + 1; |
| 490 | } |
| 491 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 492 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | return NULL; |
| 495 | } |
| 496 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | /* |
| 498 | * Allocated Resource Encoding |
| 499 | */ |
| 500 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 501 | static void pnpbios_encode_mem(struct pnp_dev *dev, unsigned char *p, |
| 502 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 504 | unsigned long base; |
| 505 | unsigned long len; |
| 506 | |
| 507 | if (pnp_resource_enabled(res)) { |
| 508 | base = res->start; |
| 509 | len = res->end - res->start + 1; |
| 510 | } else { |
| 511 | base = 0; |
| 512 | len = 0; |
| 513 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 514 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | p[4] = (base >> 8) & 0xff; |
| 516 | p[5] = ((base >> 8) >> 8) & 0xff; |
| 517 | p[6] = (base >> 8) & 0xff; |
| 518 | p[7] = ((base >> 8) >> 8) & 0xff; |
| 519 | p[10] = (len >> 8) & 0xff; |
| 520 | p[11] = ((len >> 8) >> 8) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 521 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 522 | pnp_dbg(&dev->dev, " encode mem %#lx-%#lx\n", base, base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | } |
| 524 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 525 | static void pnpbios_encode_mem32(struct pnp_dev *dev, unsigned char *p, |
| 526 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 528 | unsigned long base; |
| 529 | unsigned long len; |
| 530 | |
| 531 | if (pnp_resource_enabled(res)) { |
| 532 | base = res->start; |
| 533 | len = res->end - res->start + 1; |
| 534 | } else { |
| 535 | base = 0; |
| 536 | len = 0; |
| 537 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | p[4] = base & 0xff; |
| 540 | p[5] = (base >> 8) & 0xff; |
| 541 | p[6] = (base >> 16) & 0xff; |
| 542 | p[7] = (base >> 24) & 0xff; |
| 543 | p[8] = base & 0xff; |
| 544 | p[9] = (base >> 8) & 0xff; |
| 545 | p[10] = (base >> 16) & 0xff; |
| 546 | p[11] = (base >> 24) & 0xff; |
| 547 | p[16] = len & 0xff; |
| 548 | p[17] = (len >> 8) & 0xff; |
| 549 | p[18] = (len >> 16) & 0xff; |
| 550 | p[19] = (len >> 24) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 551 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 552 | pnp_dbg(&dev->dev, " encode mem32 %#lx-%#lx\n", base, base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | } |
| 554 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 555 | static void pnpbios_encode_fixed_mem32(struct pnp_dev *dev, unsigned char *p, |
| 556 | struct resource *res) |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 557 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 558 | unsigned long base; |
| 559 | unsigned long len; |
| 560 | |
| 561 | if (pnp_resource_enabled(res)) { |
| 562 | base = res->start; |
| 563 | len = res->end - res->start + 1; |
| 564 | } else { |
| 565 | base = 0; |
| 566 | len = 0; |
| 567 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 568 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | p[4] = base & 0xff; |
| 570 | p[5] = (base >> 8) & 0xff; |
| 571 | p[6] = (base >> 16) & 0xff; |
| 572 | p[7] = (base >> 24) & 0xff; |
| 573 | p[8] = len & 0xff; |
| 574 | p[9] = (len >> 8) & 0xff; |
| 575 | p[10] = (len >> 16) & 0xff; |
| 576 | p[11] = (len >> 24) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 577 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 578 | pnp_dbg(&dev->dev, " encode fixed_mem32 %#lx-%#lx\n", base, |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 579 | base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | } |
| 581 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 582 | static void pnpbios_encode_irq(struct pnp_dev *dev, unsigned char *p, |
| 583 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 585 | unsigned long map; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 586 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 587 | if (pnp_resource_enabled(res)) |
| 588 | map = 1 << res->start; |
| 589 | else |
| 590 | map = 0; |
| 591 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | p[1] = map & 0xff; |
| 593 | p[2] = (map >> 8) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 594 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 595 | pnp_dbg(&dev->dev, " encode irq mask %#lx\n", map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | } |
| 597 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 598 | static void pnpbios_encode_dma(struct pnp_dev *dev, unsigned char *p, |
| 599 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 601 | unsigned long map; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 602 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 603 | if (pnp_resource_enabled(res)) |
| 604 | map = 1 << res->start; |
| 605 | else |
| 606 | map = 0; |
| 607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | p[1] = map & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 609 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 610 | pnp_dbg(&dev->dev, " encode dma mask %#lx\n", map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | } |
| 612 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 613 | static void pnpbios_encode_port(struct pnp_dev *dev, unsigned char *p, |
| 614 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 616 | unsigned long base; |
| 617 | unsigned long len; |
| 618 | |
| 619 | if (pnp_resource_enabled(res)) { |
| 620 | base = res->start; |
| 621 | len = res->end - res->start + 1; |
| 622 | } else { |
| 623 | base = 0; |
| 624 | len = 0; |
| 625 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 626 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | p[2] = base & 0xff; |
| 628 | p[3] = (base >> 8) & 0xff; |
| 629 | p[4] = base & 0xff; |
| 630 | p[5] = (base >> 8) & 0xff; |
| 631 | p[7] = len & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 632 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 633 | pnp_dbg(&dev->dev, " encode io %#lx-%#lx\n", base, base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | } |
| 635 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 636 | static void pnpbios_encode_fixed_port(struct pnp_dev *dev, unsigned char *p, |
| 637 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | { |
| 639 | unsigned long base = res->start; |
| 640 | unsigned long len = res->end - res->start + 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 641 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 642 | if (pnp_resource_enabled(res)) { |
| 643 | base = res->start; |
| 644 | len = res->end - res->start + 1; |
| 645 | } else { |
| 646 | base = 0; |
| 647 | len = 0; |
| 648 | } |
| 649 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | p[1] = base & 0xff; |
| 651 | p[2] = (base >> 8) & 0xff; |
| 652 | p[3] = len & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 653 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 654 | pnp_dbg(&dev->dev, " encode fixed_io %#lx-%#lx\n", base, |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 655 | base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | } |
| 657 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 658 | static unsigned char *pnpbios_encode_allocated_resource_data(struct pnp_dev |
| 659 | *dev, |
| 660 | unsigned char *p, |
| 661 | unsigned char *end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | { |
| 663 | unsigned int len, tag; |
| 664 | int port = 0, irq = 0, dma = 0, mem = 0; |
| 665 | |
| 666 | if (!p) |
| 667 | return NULL; |
| 668 | |
| 669 | while ((char *)p < (char *)end) { |
| 670 | |
| 671 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 672 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | len = (p[2] << 8) | p[1]; |
| 674 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 675 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 677 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | switch (tag) { |
| 681 | |
| 682 | case LARGE_TAG_MEM: |
| 683 | if (len != 9) |
| 684 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 685 | pnpbios_encode_mem(dev, p, |
| 686 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | mem++; |
| 688 | break; |
| 689 | |
| 690 | case LARGE_TAG_MEM32: |
| 691 | if (len != 17) |
| 692 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 693 | pnpbios_encode_mem32(dev, p, |
| 694 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | mem++; |
| 696 | break; |
| 697 | |
| 698 | case LARGE_TAG_FIXEDMEM32: |
| 699 | if (len != 9) |
| 700 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 701 | pnpbios_encode_fixed_mem32(dev, p, |
| 702 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | mem++; |
| 704 | break; |
| 705 | |
| 706 | case SMALL_TAG_IRQ: |
| 707 | if (len < 2 || len > 3) |
| 708 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 709 | pnpbios_encode_irq(dev, p, |
| 710 | pnp_get_resource(dev, IORESOURCE_IRQ, irq)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | irq++; |
| 712 | break; |
| 713 | |
| 714 | case SMALL_TAG_DMA: |
| 715 | if (len != 2) |
| 716 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 717 | pnpbios_encode_dma(dev, p, |
| 718 | pnp_get_resource(dev, IORESOURCE_DMA, dma)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | dma++; |
| 720 | break; |
| 721 | |
| 722 | case SMALL_TAG_PORT: |
| 723 | if (len != 7) |
| 724 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 725 | pnpbios_encode_port(dev, p, |
| 726 | pnp_get_resource(dev, IORESOURCE_IO, port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | port++; |
| 728 | break; |
| 729 | |
| 730 | case SMALL_TAG_VENDOR: |
| 731 | /* do nothing */ |
| 732 | break; |
| 733 | |
| 734 | case SMALL_TAG_FIXEDPORT: |
| 735 | if (len != 3) |
| 736 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 737 | pnpbios_encode_fixed_port(dev, p, |
| 738 | pnp_get_resource(dev, IORESOURCE_IO, port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | port++; |
| 740 | break; |
| 741 | |
| 742 | case SMALL_TAG_END: |
| 743 | p = p + 2; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 744 | return (unsigned char *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | break; |
| 746 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 747 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 748 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 749 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 750 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | break; |
| 752 | } |
| 753 | |
| 754 | /* continue to the next tag */ |
| 755 | if (p[0] & LARGE_TAG) |
| 756 | p += len + 3; |
| 757 | else |
| 758 | p += len + 1; |
| 759 | } |
| 760 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 761 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | |
| 763 | return NULL; |
| 764 | } |
| 765 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | /* |
| 767 | * Core Parsing Functions |
| 768 | */ |
| 769 | |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 770 | int __init pnpbios_parse_data_stream(struct pnp_dev *dev, |
| 771 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 773 | unsigned char *p = (char *)node->data; |
| 774 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 775 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 776 | p = pnpbios_parse_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | if (!p) |
| 778 | return -EIO; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 779 | p = pnpbios_parse_resource_option_data(p, end, dev); |
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_compatible_ids(p, end, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | if (!p) |
| 784 | return -EIO; |
| 785 | return 0; |
| 786 | } |
| 787 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 788 | int pnpbios_read_resources_from_node(struct pnp_dev *dev, |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 789 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 791 | unsigned char *p = (char *)node->data; |
| 792 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 793 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 794 | p = pnpbios_parse_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | if (!p) |
| 796 | return -EIO; |
| 797 | return 0; |
| 798 | } |
| 799 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 800 | int pnpbios_write_resources_to_node(struct pnp_dev *dev, |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 801 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 803 | unsigned char *p = (char *)node->data; |
| 804 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 805 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 806 | p = pnpbios_encode_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | if (!p) |
| 808 | return -EIO; |
| 809 | return 0; |
| 810 | } |