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 | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 90 | dev_dbg(&dev->dev, "parse allocated resources\n"); |
| 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, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 219 | struct pnp_option *option) |
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]; |
| 229 | pnp_register_mem_resource(dev, option, min, max, align, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | } |
| 231 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 232 | static __init void pnpbios_parse_mem32_option(struct pnp_dev *dev, |
| 233 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 234 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 236 | resource_size_t min, max, align, len; |
| 237 | unsigned char flags; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 238 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 239 | min = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; |
| 240 | max = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; |
| 241 | align = (p[15] << 24) | (p[14] << 16) | (p[13] << 8) | p[12]; |
| 242 | len = (p[19] << 24) | (p[18] << 16) | (p[17] << 8) | p[16]; |
| 243 | flags = p[3]; |
| 244 | pnp_register_mem_resource(dev, option, min, max, align, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | } |
| 246 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 247 | static __init void pnpbios_parse_fixed_mem32_option(struct pnp_dev *dev, |
| 248 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 249 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 251 | resource_size_t base, len; |
| 252 | unsigned char flags; |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 253 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 254 | base = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; |
| 255 | len = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; |
| 256 | flags = p[3]; |
| 257 | pnp_register_mem_resource(dev, option, base, base, 0, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | } |
| 259 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 260 | static __init void pnpbios_parse_irq_option(struct pnp_dev *dev, |
| 261 | unsigned char *p, int size, |
| 262 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | unsigned long bits; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 265 | pnp_irq_mask_t map; |
| 266 | unsigned char flags = IORESOURCE_IRQ_HIGHEDGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | bits = (p[2] << 8) | p[1]; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 269 | |
| 270 | bitmap_zero(map.bits, PNP_IRQ_NR); |
| 271 | bitmap_copy(map.bits, &bits, 16); |
| 272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | if (size > 2) |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 274 | flags = p[3]; |
| 275 | |
| 276 | pnp_register_irq_resource(dev, option, &map, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | } |
| 278 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 279 | static __init void pnpbios_parse_dma_option(struct pnp_dev *dev, |
| 280 | unsigned char *p, int size, |
| 281 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 283 | pnp_register_dma_resource(dev, option, p[1], p[2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | } |
| 285 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 286 | static __init void pnpbios_parse_port_option(struct pnp_dev *dev, |
| 287 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 288 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 290 | resource_size_t min, max, align, len; |
| 291 | unsigned char flags; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 292 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 293 | min = (p[3] << 8) | p[2]; |
| 294 | max = (p[5] << 8) | p[4]; |
| 295 | align = p[6]; |
| 296 | len = p[7]; |
| 297 | flags = p[1] ? IORESOURCE_IO_16BIT_ADDR : 0; |
| 298 | pnp_register_port_resource(dev, option, min, max, align, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | } |
| 300 | |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 301 | static __init void pnpbios_parse_fixed_port_option(struct pnp_dev *dev, |
| 302 | unsigned char *p, int size, |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 303 | struct pnp_option *option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 305 | resource_size_t base, len; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 306 | |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame^] | 307 | base = (p[2] << 8) | p[1]; |
| 308 | len = p[3]; |
| 309 | pnp_register_port_resource(dev, option, base, base, 0, len, |
| 310 | IORESOURCE_IO_FIXED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | } |
| 312 | |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 313 | static __init unsigned char * |
| 314 | pnpbios_parse_resource_option_data(unsigned char *p, unsigned char *end, |
| 315 | struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | { |
| 317 | unsigned int len, tag; |
| 318 | int priority = 0; |
| 319 | struct pnp_option *option, *option_independent; |
| 320 | |
| 321 | if (!p) |
| 322 | return NULL; |
| 323 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 324 | dev_dbg(&dev->dev, "parse resource options\n"); |
| 325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | option_independent = option = pnp_register_independent_option(dev); |
| 327 | if (!option) |
| 328 | return NULL; |
| 329 | |
| 330 | while ((char *)p < (char *)end) { |
| 331 | |
| 332 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 333 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | len = (p[2] << 8) | p[1]; |
| 335 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 336 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 338 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | switch (tag) { |
| 342 | |
| 343 | case LARGE_TAG_MEM: |
| 344 | if (len != 9) |
| 345 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 346 | pnpbios_parse_mem_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | break; |
| 348 | |
| 349 | case LARGE_TAG_MEM32: |
| 350 | if (len != 17) |
| 351 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 352 | pnpbios_parse_mem32_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | break; |
| 354 | |
| 355 | case LARGE_TAG_FIXEDMEM32: |
| 356 | if (len != 9) |
| 357 | goto len_err; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 358 | pnpbios_parse_fixed_mem32_option(dev, p, len, option); |
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 | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 364 | pnpbios_parse_irq_option(dev, p, len, option); |
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 | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 370 | pnpbios_parse_dma_option(dev, p, len, option); |
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 | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 376 | pnpbios_parse_port_option(dev, p, len, option); |
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 | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 386 | pnpbios_parse_fixed_port_option(dev, p, len, option); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | break; |
| 388 | |
| 389 | case SMALL_TAG_STARTDEP: |
| 390 | if (len > 1) |
| 391 | goto len_err; |
| 392 | priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; |
| 393 | if (len > 0) |
| 394 | priority = 0x100 | p[1]; |
| 395 | option = pnp_register_dependent_option(dev, priority); |
| 396 | if (!option) |
| 397 | return NULL; |
| 398 | break; |
| 399 | |
| 400 | case SMALL_TAG_ENDDEP: |
| 401 | if (len != 0) |
| 402 | goto len_err; |
| 403 | if (option_independent == option) |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 404 | dev_warn(&dev->dev, "missing " |
| 405 | "SMALL_TAG_STARTDEP tag\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | option = option_independent; |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 407 | dev_dbg(&dev->dev, "end dependent options\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | break; |
| 409 | |
| 410 | case SMALL_TAG_END: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 411 | return p + 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 413 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 414 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 415 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 416 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | break; |
| 418 | } |
| 419 | |
| 420 | /* continue to the next tag */ |
| 421 | if (p[0] & LARGE_TAG) |
| 422 | p += len + 3; |
| 423 | else |
| 424 | p += len + 1; |
| 425 | } |
| 426 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 427 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
| 429 | return NULL; |
| 430 | } |
| 431 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | /* |
| 433 | * Compatible Device IDs |
| 434 | */ |
| 435 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 436 | static unsigned char *pnpbios_parse_compatible_ids(unsigned char *p, |
| 437 | unsigned char *end, |
| 438 | struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | { |
| 440 | int len, tag; |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 441 | u32 eisa_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | char id[8]; |
| 443 | struct pnp_id *dev_id; |
| 444 | |
| 445 | if (!p) |
| 446 | return NULL; |
| 447 | |
| 448 | while ((char *)p < (char *)end) { |
| 449 | |
| 450 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 451 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | len = (p[2] << 8) | p[1]; |
| 453 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 454 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 456 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | } |
| 458 | |
| 459 | switch (tag) { |
| 460 | |
| 461 | case LARGE_TAG_ANSISTR: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 462 | strncpy(dev->name, p + 3, |
| 463 | len >= PNP_NAME_LEN ? PNP_NAME_LEN - 2 : len); |
| 464 | dev->name[len >= |
| 465 | PNP_NAME_LEN ? PNP_NAME_LEN - 1 : len] = '\0'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | break; |
| 467 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 468 | case SMALL_TAG_COMPATDEVID: /* compatible ID */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | if (len != 4) |
| 470 | goto len_err; |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 471 | eisa_id = p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24; |
| 472 | pnp_eisa_id_to_string(eisa_id & PNP_EISA_ID_MASK, id); |
Bjorn Helgaas | 772defc | 2008-04-28 16:33:52 -0600 | [diff] [blame] | 473 | dev_id = pnp_add_id(dev, id); |
| 474 | if (!dev_id) |
| 475 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | break; |
| 477 | |
| 478 | case SMALL_TAG_END: |
| 479 | p = p + 2; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 480 | return (unsigned char *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | break; |
| 482 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 483 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 484 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 485 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 486 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | break; |
| 488 | } |
| 489 | |
| 490 | /* continue to the next tag */ |
| 491 | if (p[0] & LARGE_TAG) |
| 492 | p += len + 3; |
| 493 | else |
| 494 | p += len + 1; |
| 495 | } |
| 496 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 497 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
| 499 | return NULL; |
| 500 | } |
| 501 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | /* |
| 503 | * Allocated Resource Encoding |
| 504 | */ |
| 505 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 506 | static void pnpbios_encode_mem(struct pnp_dev *dev, unsigned char *p, |
| 507 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 509 | unsigned long base; |
| 510 | unsigned long len; |
| 511 | |
| 512 | if (pnp_resource_enabled(res)) { |
| 513 | base = res->start; |
| 514 | len = res->end - res->start + 1; |
| 515 | } else { |
| 516 | base = 0; |
| 517 | len = 0; |
| 518 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 519 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | p[4] = (base >> 8) & 0xff; |
| 521 | p[5] = ((base >> 8) >> 8) & 0xff; |
| 522 | p[6] = (base >> 8) & 0xff; |
| 523 | p[7] = ((base >> 8) >> 8) & 0xff; |
| 524 | p[10] = (len >> 8) & 0xff; |
| 525 | p[11] = ((len >> 8) >> 8) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 526 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 527 | dev_dbg(&dev->dev, " encode mem %#lx-%#lx\n", base, base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | } |
| 529 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 530 | static void pnpbios_encode_mem32(struct pnp_dev *dev, unsigned char *p, |
| 531 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 533 | unsigned long base; |
| 534 | unsigned long len; |
| 535 | |
| 536 | if (pnp_resource_enabled(res)) { |
| 537 | base = res->start; |
| 538 | len = res->end - res->start + 1; |
| 539 | } else { |
| 540 | base = 0; |
| 541 | len = 0; |
| 542 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 543 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | p[4] = base & 0xff; |
| 545 | p[5] = (base >> 8) & 0xff; |
| 546 | p[6] = (base >> 16) & 0xff; |
| 547 | p[7] = (base >> 24) & 0xff; |
| 548 | p[8] = base & 0xff; |
| 549 | p[9] = (base >> 8) & 0xff; |
| 550 | p[10] = (base >> 16) & 0xff; |
| 551 | p[11] = (base >> 24) & 0xff; |
| 552 | p[16] = len & 0xff; |
| 553 | p[17] = (len >> 8) & 0xff; |
| 554 | p[18] = (len >> 16) & 0xff; |
| 555 | p[19] = (len >> 24) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 556 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 557 | dev_dbg(&dev->dev, " encode mem32 %#lx-%#lx\n", base, base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | } |
| 559 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 560 | static void pnpbios_encode_fixed_mem32(struct pnp_dev *dev, unsigned char *p, |
| 561 | struct resource *res) |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 562 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 563 | unsigned long base; |
| 564 | unsigned long len; |
| 565 | |
| 566 | if (pnp_resource_enabled(res)) { |
| 567 | base = res->start; |
| 568 | len = res->end - res->start + 1; |
| 569 | } else { |
| 570 | base = 0; |
| 571 | len = 0; |
| 572 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | p[4] = base & 0xff; |
| 575 | p[5] = (base >> 8) & 0xff; |
| 576 | p[6] = (base >> 16) & 0xff; |
| 577 | p[7] = (base >> 24) & 0xff; |
| 578 | p[8] = len & 0xff; |
| 579 | p[9] = (len >> 8) & 0xff; |
| 580 | p[10] = (len >> 16) & 0xff; |
| 581 | p[11] = (len >> 24) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 582 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 583 | dev_dbg(&dev->dev, " encode fixed_mem32 %#lx-%#lx\n", base, |
| 584 | base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | } |
| 586 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 587 | static void pnpbios_encode_irq(struct pnp_dev *dev, unsigned char *p, |
| 588 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 590 | unsigned long map; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 591 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 592 | if (pnp_resource_enabled(res)) |
| 593 | map = 1 << res->start; |
| 594 | else |
| 595 | map = 0; |
| 596 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | p[1] = map & 0xff; |
| 598 | p[2] = (map >> 8) & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 599 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 600 | dev_dbg(&dev->dev, " encode irq mask %#lx\n", map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | } |
| 602 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 603 | static void pnpbios_encode_dma(struct pnp_dev *dev, unsigned char *p, |
| 604 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 606 | unsigned long map; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 607 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 608 | if (pnp_resource_enabled(res)) |
| 609 | map = 1 << res->start; |
| 610 | else |
| 611 | map = 0; |
| 612 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | p[1] = map & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 614 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 615 | dev_dbg(&dev->dev, " encode dma mask %#lx\n", map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | } |
| 617 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 618 | static void pnpbios_encode_port(struct pnp_dev *dev, unsigned char *p, |
| 619 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | { |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 621 | unsigned long base; |
| 622 | unsigned long len; |
| 623 | |
| 624 | if (pnp_resource_enabled(res)) { |
| 625 | base = res->start; |
| 626 | len = res->end - res->start + 1; |
| 627 | } else { |
| 628 | base = 0; |
| 629 | len = 0; |
| 630 | } |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 631 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | p[2] = base & 0xff; |
| 633 | p[3] = (base >> 8) & 0xff; |
| 634 | p[4] = base & 0xff; |
| 635 | p[5] = (base >> 8) & 0xff; |
| 636 | p[7] = len & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 637 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 638 | dev_dbg(&dev->dev, " encode io %#lx-%#lx\n", base, base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | } |
| 640 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 641 | static void pnpbios_encode_fixed_port(struct pnp_dev *dev, unsigned char *p, |
| 642 | struct resource *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | { |
| 644 | unsigned long base = res->start; |
| 645 | unsigned long len = res->end - res->start + 1; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 646 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 647 | if (pnp_resource_enabled(res)) { |
| 648 | base = res->start; |
| 649 | len = res->end - res->start + 1; |
| 650 | } else { |
| 651 | base = 0; |
| 652 | len = 0; |
| 653 | } |
| 654 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | p[1] = base & 0xff; |
| 656 | p[2] = (base >> 8) & 0xff; |
| 657 | p[3] = len & 0xff; |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 658 | |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 659 | dev_dbg(&dev->dev, " encode fixed_io %#lx-%#lx\n", base, |
| 660 | base + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | } |
| 662 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 663 | static unsigned char *pnpbios_encode_allocated_resource_data(struct pnp_dev |
| 664 | *dev, |
| 665 | unsigned char *p, |
| 666 | unsigned char *end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | { |
| 668 | unsigned int len, tag; |
| 669 | int port = 0, irq = 0, dma = 0, mem = 0; |
| 670 | |
| 671 | if (!p) |
| 672 | return NULL; |
| 673 | |
| 674 | while ((char *)p < (char *)end) { |
| 675 | |
| 676 | /* determine the type of tag */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 677 | if (p[0] & LARGE_TAG) { /* large tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | len = (p[2] << 8) | p[1]; |
| 679 | tag = p[0]; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 680 | } else { /* small tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | len = p[0] & 0x07; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 682 | tag = ((p[0] >> 3) & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | } |
| 684 | |
| 685 | switch (tag) { |
| 686 | |
| 687 | case LARGE_TAG_MEM: |
| 688 | if (len != 9) |
| 689 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 690 | pnpbios_encode_mem(dev, p, |
| 691 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | mem++; |
| 693 | break; |
| 694 | |
| 695 | case LARGE_TAG_MEM32: |
| 696 | if (len != 17) |
| 697 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 698 | pnpbios_encode_mem32(dev, p, |
| 699 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | mem++; |
| 701 | break; |
| 702 | |
| 703 | case LARGE_TAG_FIXEDMEM32: |
| 704 | if (len != 9) |
| 705 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 706 | pnpbios_encode_fixed_mem32(dev, p, |
| 707 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | mem++; |
| 709 | break; |
| 710 | |
| 711 | case SMALL_TAG_IRQ: |
| 712 | if (len < 2 || len > 3) |
| 713 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 714 | pnpbios_encode_irq(dev, p, |
| 715 | pnp_get_resource(dev, IORESOURCE_IRQ, irq)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | irq++; |
| 717 | break; |
| 718 | |
| 719 | case SMALL_TAG_DMA: |
| 720 | if (len != 2) |
| 721 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 722 | pnpbios_encode_dma(dev, p, |
| 723 | pnp_get_resource(dev, IORESOURCE_DMA, dma)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | dma++; |
| 725 | break; |
| 726 | |
| 727 | case SMALL_TAG_PORT: |
| 728 | if (len != 7) |
| 729 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 730 | pnpbios_encode_port(dev, p, |
| 731 | pnp_get_resource(dev, IORESOURCE_IO, port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | port++; |
| 733 | break; |
| 734 | |
| 735 | case SMALL_TAG_VENDOR: |
| 736 | /* do nothing */ |
| 737 | break; |
| 738 | |
| 739 | case SMALL_TAG_FIXEDPORT: |
| 740 | if (len != 3) |
| 741 | goto len_err; |
Bjorn Helgaas | 7e2cf31 | 2008-04-28 16:34:24 -0600 | [diff] [blame] | 742 | pnpbios_encode_fixed_port(dev, p, |
| 743 | pnp_get_resource(dev, IORESOURCE_IO, port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | port++; |
| 745 | break; |
| 746 | |
| 747 | case SMALL_TAG_END: |
| 748 | p = p + 2; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 749 | return (unsigned char *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | break; |
| 751 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 752 | default: /* an unkown tag */ |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 753 | len_err: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 754 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| 755 | tag, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | break; |
| 757 | } |
| 758 | |
| 759 | /* continue to the next tag */ |
| 760 | if (p[0] & LARGE_TAG) |
| 761 | p += len + 3; |
| 762 | else |
| 763 | p += len + 1; |
| 764 | } |
| 765 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 766 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | |
| 768 | return NULL; |
| 769 | } |
| 770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | /* |
| 772 | * Core Parsing Functions |
| 773 | */ |
| 774 | |
Thomas Renninger | 2bb9a6b | 2008-02-06 01:40:03 -0800 | [diff] [blame] | 775 | int __init pnpbios_parse_data_stream(struct pnp_dev *dev, |
| 776 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 778 | unsigned char *p = (char *)node->data; |
| 779 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 780 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 781 | p = pnpbios_parse_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | if (!p) |
| 783 | return -EIO; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 784 | p = pnpbios_parse_resource_option_data(p, end, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | if (!p) |
| 786 | return -EIO; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 787 | p = pnpbios_parse_compatible_ids(p, end, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | if (!p) |
| 789 | return -EIO; |
| 790 | return 0; |
| 791 | } |
| 792 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 793 | int pnpbios_read_resources_from_node(struct pnp_dev *dev, |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 794 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 796 | unsigned char *p = (char *)node->data; |
| 797 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 798 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 799 | p = pnpbios_parse_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | if (!p) |
| 801 | return -EIO; |
| 802 | return 0; |
| 803 | } |
| 804 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 805 | int pnpbios_write_resources_to_node(struct pnp_dev *dev, |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 806 | struct pnp_bios_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 808 | unsigned char *p = (char *)node->data; |
| 809 | unsigned char *end = (char *)(node->data + node->size); |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 810 | |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 811 | p = pnpbios_encode_allocated_resource_data(dev, p, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | if (!p) |
| 813 | return -EIO; |
| 814 | return 0; |
| 815 | } |