| /* |
| * rsparser.c - parses and encodes pnpbios resource data streams |
| */ |
| |
| #include <linux/ctype.h> |
| #include <linux/pnp.h> |
| #include <linux/pnpbios.h> |
| #include <linux/string.h> |
| #include <linux/slab.h> |
| |
| #ifdef CONFIG_PCI |
| #include <linux/pci.h> |
| #else |
| inline void pcibios_penalize_isa_irq(int irq, int active) |
| { |
| } |
| #endif /* CONFIG_PCI */ |
| |
| #include "../base.h" |
| #include "pnpbios.h" |
| |
| /* standard resource tags */ |
| #define SMALL_TAG_PNPVERNO 0x01 |
| #define SMALL_TAG_LOGDEVID 0x02 |
| #define SMALL_TAG_COMPATDEVID 0x03 |
| #define SMALL_TAG_IRQ 0x04 |
| #define SMALL_TAG_DMA 0x05 |
| #define SMALL_TAG_STARTDEP 0x06 |
| #define SMALL_TAG_ENDDEP 0x07 |
| #define SMALL_TAG_PORT 0x08 |
| #define SMALL_TAG_FIXEDPORT 0x09 |
| #define SMALL_TAG_VENDOR 0x0e |
| #define SMALL_TAG_END 0x0f |
| #define LARGE_TAG 0x80 |
| #define LARGE_TAG_MEM 0x81 |
| #define LARGE_TAG_ANSISTR 0x82 |
| #define LARGE_TAG_UNICODESTR 0x83 |
| #define LARGE_TAG_VENDOR 0x84 |
| #define LARGE_TAG_MEM32 0x85 |
| #define LARGE_TAG_FIXEDMEM32 0x86 |
| |
| /* |
| * Resource Data Stream Format: |
| * |
| * Allocated Resources (required) |
| * end tag -> |
| * Resource Configuration Options (optional) |
| * end tag -> |
| * Compitable Device IDs (optional) |
| * final end tag -> |
| */ |
| |
| /* |
| * Allocated Resources |
| */ |
| |
| static void pnpbios_parse_allocated_irqresource(struct pnp_dev *dev, int irq) |
| { |
| struct pnp_resource_table *res = &dev->res; |
| int i = 0; |
| |
| while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) |
| && i < PNP_MAX_IRQ) |
| i++; |
| if (i < PNP_MAX_IRQ) { |
| res->irq_resource[i].flags = IORESOURCE_IRQ; // Also clears _UNSET flag |
| if (irq == -1) { |
| res->irq_resource[i].flags |= IORESOURCE_DISABLED; |
| return; |
| } |
| res->irq_resource[i].start = |
| res->irq_resource[i].end = (unsigned long)irq; |
| pcibios_penalize_isa_irq(irq, 1); |
| } |
| } |
| |
| static void pnpbios_parse_allocated_dmaresource(struct pnp_dev *dev, int dma) |
| { |
| struct pnp_resource_table *res = &dev->res; |
| int i = 0; |
| |
| while (i < PNP_MAX_DMA && |
| !(res->dma_resource[i].flags & IORESOURCE_UNSET)) |
| i++; |
| if (i < PNP_MAX_DMA) { |
| res->dma_resource[i].flags = IORESOURCE_DMA; // Also clears _UNSET flag |
| if (dma == -1) { |
| res->dma_resource[i].flags |= IORESOURCE_DISABLED; |
| return; |
| } |
| res->dma_resource[i].start = |
| res->dma_resource[i].end = (unsigned long)dma; |
| } |
| } |
| |
| static void pnpbios_parse_allocated_ioresource(struct pnp_dev *dev, |
| int io, int len) |
| { |
| struct pnp_resource_table *res = &dev->res; |
| int i = 0; |
| |
| while (!(res->port_resource[i].flags & IORESOURCE_UNSET) |
| && i < PNP_MAX_PORT) |
| i++; |
| if (i < PNP_MAX_PORT) { |
| res->port_resource[i].flags = IORESOURCE_IO; // Also clears _UNSET flag |
| if (len <= 0 || (io + len - 1) >= 0x10003) { |
| res->port_resource[i].flags |= IORESOURCE_DISABLED; |
| return; |
| } |
| res->port_resource[i].start = (unsigned long)io; |
| res->port_resource[i].end = (unsigned long)(io + len - 1); |
| } |
| } |
| |
| static void pnpbios_parse_allocated_memresource(struct pnp_dev *dev, |
| int mem, int len) |
| { |
| struct pnp_resource_table *res = &dev->res; |
| int i = 0; |
| |
| while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) |
| && i < PNP_MAX_MEM) |
| i++; |
| if (i < PNP_MAX_MEM) { |
| res->mem_resource[i].flags = IORESOURCE_MEM; // Also clears _UNSET flag |
| if (len <= 0) { |
| res->mem_resource[i].flags |= IORESOURCE_DISABLED; |
| return; |
| } |
| res->mem_resource[i].start = (unsigned long)mem; |
| res->mem_resource[i].end = (unsigned long)(mem + len - 1); |
| } |
| } |
| |
| static unsigned char *pnpbios_parse_allocated_resource_data(struct pnp_dev *dev, |
| unsigned char *p, |
| unsigned char *end) |
| { |
| unsigned int len, tag; |
| int io, size, mask, i; |
| |
| if (!p) |
| return NULL; |
| |
| dev_dbg(&dev->dev, "parse allocated resources\n"); |
| |
| pnp_init_resources(dev); |
| |
| while ((char *)p < (char *)end) { |
| |
| /* determine the type of tag */ |
| if (p[0] & LARGE_TAG) { /* large tag */ |
| len = (p[2] << 8) | p[1]; |
| tag = p[0]; |
| } else { /* small tag */ |
| len = p[0] & 0x07; |
| tag = ((p[0] >> 3) & 0x0f); |
| } |
| |
| switch (tag) { |
| |
| case LARGE_TAG_MEM: |
| if (len != 9) |
| goto len_err; |
| io = *(short *)&p[4]; |
| size = *(short *)&p[10]; |
| pnpbios_parse_allocated_memresource(dev, io, size); |
| break; |
| |
| case LARGE_TAG_ANSISTR: |
| /* ignore this for now */ |
| break; |
| |
| case LARGE_TAG_VENDOR: |
| /* do nothing */ |
| break; |
| |
| case LARGE_TAG_MEM32: |
| if (len != 17) |
| goto len_err; |
| io = *(int *)&p[4]; |
| size = *(int *)&p[16]; |
| pnpbios_parse_allocated_memresource(dev, io, size); |
| break; |
| |
| case LARGE_TAG_FIXEDMEM32: |
| if (len != 9) |
| goto len_err; |
| io = *(int *)&p[4]; |
| size = *(int *)&p[8]; |
| pnpbios_parse_allocated_memresource(dev, io, size); |
| break; |
| |
| case SMALL_TAG_IRQ: |
| if (len < 2 || len > 3) |
| goto len_err; |
| io = -1; |
| mask = p[1] + p[2] * 256; |
| for (i = 0; i < 16; i++, mask = mask >> 1) |
| if (mask & 0x01) |
| io = i; |
| pnpbios_parse_allocated_irqresource(dev, io); |
| break; |
| |
| case SMALL_TAG_DMA: |
| if (len != 2) |
| goto len_err; |
| io = -1; |
| mask = p[1]; |
| for (i = 0; i < 8; i++, mask = mask >> 1) |
| if (mask & 0x01) |
| io = i; |
| pnpbios_parse_allocated_dmaresource(dev, io); |
| break; |
| |
| case SMALL_TAG_PORT: |
| if (len != 7) |
| goto len_err; |
| io = p[2] + p[3] * 256; |
| size = p[7]; |
| pnpbios_parse_allocated_ioresource(dev, io, size); |
| break; |
| |
| case SMALL_TAG_VENDOR: |
| /* do nothing */ |
| break; |
| |
| case SMALL_TAG_FIXEDPORT: |
| if (len != 3) |
| goto len_err; |
| io = p[1] + p[2] * 256; |
| size = p[3]; |
| pnpbios_parse_allocated_ioresource(dev, io, size); |
| break; |
| |
| case SMALL_TAG_END: |
| p = p + 2; |
| return (unsigned char *)p; |
| break; |
| |
| default: /* an unkown tag */ |
| len_err: |
| dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| tag, len); |
| break; |
| } |
| |
| /* continue to the next tag */ |
| if (p[0] & LARGE_TAG) |
| p += len + 3; |
| else |
| p += len + 1; |
| } |
| |
| dev_err(&dev->dev, "no end tag in resource structure\n"); |
| |
| return NULL; |
| } |
| |
| /* |
| * Resource Configuration Options |
| */ |
| |
| static __init void pnpbios_parse_mem_option(struct pnp_dev *dev, |
| unsigned char *p, int size, |
| struct pnp_option *option) |
| { |
| struct pnp_mem *mem; |
| |
| mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
| if (!mem) |
| return; |
| mem->min = ((p[5] << 8) | p[4]) << 8; |
| mem->max = ((p[7] << 8) | p[6]) << 8; |
| mem->align = (p[9] << 8) | p[8]; |
| mem->size = ((p[11] << 8) | p[10]) << 8; |
| mem->flags = p[3]; |
| pnp_register_mem_resource(dev, option, mem); |
| } |
| |
| static __init void pnpbios_parse_mem32_option(struct pnp_dev *dev, |
| unsigned char *p, int size, |
| struct pnp_option *option) |
| { |
| struct pnp_mem *mem; |
| |
| mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
| if (!mem) |
| return; |
| mem->min = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; |
| mem->max = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; |
| mem->align = (p[15] << 24) | (p[14] << 16) | (p[13] << 8) | p[12]; |
| mem->size = (p[19] << 24) | (p[18] << 16) | (p[17] << 8) | p[16]; |
| mem->flags = p[3]; |
| pnp_register_mem_resource(dev, option, mem); |
| } |
| |
| static __init void pnpbios_parse_fixed_mem32_option(struct pnp_dev *dev, |
| unsigned char *p, int size, |
| struct pnp_option *option) |
| { |
| struct pnp_mem *mem; |
| |
| mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
| if (!mem) |
| return; |
| mem->min = mem->max = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; |
| mem->size = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; |
| mem->align = 0; |
| mem->flags = p[3]; |
| pnp_register_mem_resource(dev, option, mem); |
| } |
| |
| static __init void pnpbios_parse_irq_option(struct pnp_dev *dev, |
| unsigned char *p, int size, |
| struct pnp_option *option) |
| { |
| struct pnp_irq *irq; |
| unsigned long bits; |
| |
| irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL); |
| if (!irq) |
| return; |
| bits = (p[2] << 8) | p[1]; |
| bitmap_copy(irq->map, &bits, 16); |
| if (size > 2) |
| irq->flags = p[3]; |
| else |
| irq->flags = IORESOURCE_IRQ_HIGHEDGE; |
| pnp_register_irq_resource(dev, option, irq); |
| } |
| |
| static __init void pnpbios_parse_dma_option(struct pnp_dev *dev, |
| unsigned char *p, int size, |
| struct pnp_option *option) |
| { |
| struct pnp_dma *dma; |
| |
| dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL); |
| if (!dma) |
| return; |
| dma->map = p[1]; |
| dma->flags = p[2]; |
| pnp_register_dma_resource(dev, option, dma); |
| } |
| |
| static __init void pnpbios_parse_port_option(struct pnp_dev *dev, |
| unsigned char *p, int size, |
| struct pnp_option *option) |
| { |
| struct pnp_port *port; |
| |
| port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
| if (!port) |
| return; |
| port->min = (p[3] << 8) | p[2]; |
| port->max = (p[5] << 8) | p[4]; |
| port->align = p[6]; |
| port->size = p[7]; |
| port->flags = p[1] ? PNP_PORT_FLAG_16BITADDR : 0; |
| pnp_register_port_resource(dev, option, port); |
| } |
| |
| static __init void pnpbios_parse_fixed_port_option(struct pnp_dev *dev, |
| unsigned char *p, int size, |
| struct pnp_option *option) |
| { |
| struct pnp_port *port; |
| |
| port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
| if (!port) |
| return; |
| port->min = port->max = (p[2] << 8) | p[1]; |
| port->size = p[3]; |
| port->align = 0; |
| port->flags = PNP_PORT_FLAG_FIXED; |
| pnp_register_port_resource(dev, option, port); |
| } |
| |
| static __init unsigned char * |
| pnpbios_parse_resource_option_data(unsigned char *p, unsigned char *end, |
| struct pnp_dev *dev) |
| { |
| unsigned int len, tag; |
| int priority = 0; |
| struct pnp_option *option, *option_independent; |
| |
| if (!p) |
| return NULL; |
| |
| dev_dbg(&dev->dev, "parse resource options\n"); |
| |
| option_independent = option = pnp_register_independent_option(dev); |
| if (!option) |
| return NULL; |
| |
| while ((char *)p < (char *)end) { |
| |
| /* determine the type of tag */ |
| if (p[0] & LARGE_TAG) { /* large tag */ |
| len = (p[2] << 8) | p[1]; |
| tag = p[0]; |
| } else { /* small tag */ |
| len = p[0] & 0x07; |
| tag = ((p[0] >> 3) & 0x0f); |
| } |
| |
| switch (tag) { |
| |
| case LARGE_TAG_MEM: |
| if (len != 9) |
| goto len_err; |
| pnpbios_parse_mem_option(dev, p, len, option); |
| break; |
| |
| case LARGE_TAG_MEM32: |
| if (len != 17) |
| goto len_err; |
| pnpbios_parse_mem32_option(dev, p, len, option); |
| break; |
| |
| case LARGE_TAG_FIXEDMEM32: |
| if (len != 9) |
| goto len_err; |
| pnpbios_parse_fixed_mem32_option(dev, p, len, option); |
| break; |
| |
| case SMALL_TAG_IRQ: |
| if (len < 2 || len > 3) |
| goto len_err; |
| pnpbios_parse_irq_option(dev, p, len, option); |
| break; |
| |
| case SMALL_TAG_DMA: |
| if (len != 2) |
| goto len_err; |
| pnpbios_parse_dma_option(dev, p, len, option); |
| break; |
| |
| case SMALL_TAG_PORT: |
| if (len != 7) |
| goto len_err; |
| pnpbios_parse_port_option(dev, p, len, option); |
| break; |
| |
| case SMALL_TAG_VENDOR: |
| /* do nothing */ |
| break; |
| |
| case SMALL_TAG_FIXEDPORT: |
| if (len != 3) |
| goto len_err; |
| pnpbios_parse_fixed_port_option(dev, p, len, option); |
| break; |
| |
| case SMALL_TAG_STARTDEP: |
| if (len > 1) |
| goto len_err; |
| priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; |
| if (len > 0) |
| priority = 0x100 | p[1]; |
| option = pnp_register_dependent_option(dev, priority); |
| if (!option) |
| return NULL; |
| break; |
| |
| case SMALL_TAG_ENDDEP: |
| if (len != 0) |
| goto len_err; |
| if (option_independent == option) |
| dev_warn(&dev->dev, "missing " |
| "SMALL_TAG_STARTDEP tag\n"); |
| option = option_independent; |
| dev_dbg(&dev->dev, "end dependent options\n"); |
| break; |
| |
| case SMALL_TAG_END: |
| return p + 2; |
| |
| default: /* an unkown tag */ |
| len_err: |
| dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| tag, len); |
| break; |
| } |
| |
| /* continue to the next tag */ |
| if (p[0] & LARGE_TAG) |
| p += len + 3; |
| else |
| p += len + 1; |
| } |
| |
| dev_err(&dev->dev, "no end tag in resource structure\n"); |
| |
| return NULL; |
| } |
| |
| /* |
| * Compatible Device IDs |
| */ |
| |
| static unsigned char *pnpbios_parse_compatible_ids(unsigned char *p, |
| unsigned char *end, |
| struct pnp_dev *dev) |
| { |
| int len, tag; |
| u32 eisa_id; |
| char id[8]; |
| struct pnp_id *dev_id; |
| |
| if (!p) |
| return NULL; |
| |
| while ((char *)p < (char *)end) { |
| |
| /* determine the type of tag */ |
| if (p[0] & LARGE_TAG) { /* large tag */ |
| len = (p[2] << 8) | p[1]; |
| tag = p[0]; |
| } else { /* small tag */ |
| len = p[0] & 0x07; |
| tag = ((p[0] >> 3) & 0x0f); |
| } |
| |
| switch (tag) { |
| |
| case LARGE_TAG_ANSISTR: |
| strncpy(dev->name, p + 3, |
| len >= PNP_NAME_LEN ? PNP_NAME_LEN - 2 : len); |
| dev->name[len >= |
| PNP_NAME_LEN ? PNP_NAME_LEN - 1 : len] = '\0'; |
| break; |
| |
| case SMALL_TAG_COMPATDEVID: /* compatible ID */ |
| if (len != 4) |
| goto len_err; |
| eisa_id = p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24; |
| pnp_eisa_id_to_string(eisa_id & PNP_EISA_ID_MASK, id); |
| dev_id = pnp_add_id(dev, id); |
| if (!dev_id) |
| return NULL; |
| break; |
| |
| case SMALL_TAG_END: |
| p = p + 2; |
| return (unsigned char *)p; |
| break; |
| |
| default: /* an unkown tag */ |
| len_err: |
| dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| tag, len); |
| break; |
| } |
| |
| /* continue to the next tag */ |
| if (p[0] & LARGE_TAG) |
| p += len + 3; |
| else |
| p += len + 1; |
| } |
| |
| dev_err(&dev->dev, "no end tag in resource structure\n"); |
| |
| return NULL; |
| } |
| |
| /* |
| * Allocated Resource Encoding |
| */ |
| |
| static void pnpbios_encode_mem(struct pnp_dev *dev, unsigned char *p, |
| struct resource *res) |
| { |
| unsigned long base = res->start; |
| unsigned long len = res->end - res->start + 1; |
| |
| p[4] = (base >> 8) & 0xff; |
| p[5] = ((base >> 8) >> 8) & 0xff; |
| p[6] = (base >> 8) & 0xff; |
| p[7] = ((base >> 8) >> 8) & 0xff; |
| p[10] = (len >> 8) & 0xff; |
| p[11] = ((len >> 8) >> 8) & 0xff; |
| |
| dev_dbg(&dev->dev, " encode mem %#llx-%#llx\n", |
| (unsigned long long) res->start, (unsigned long long) res->end); |
| } |
| |
| static void pnpbios_encode_mem32(struct pnp_dev *dev, unsigned char *p, |
| struct resource *res) |
| { |
| unsigned long base = res->start; |
| unsigned long len = res->end - res->start + 1; |
| |
| p[4] = base & 0xff; |
| p[5] = (base >> 8) & 0xff; |
| p[6] = (base >> 16) & 0xff; |
| p[7] = (base >> 24) & 0xff; |
| p[8] = base & 0xff; |
| p[9] = (base >> 8) & 0xff; |
| p[10] = (base >> 16) & 0xff; |
| p[11] = (base >> 24) & 0xff; |
| p[16] = len & 0xff; |
| p[17] = (len >> 8) & 0xff; |
| p[18] = (len >> 16) & 0xff; |
| p[19] = (len >> 24) & 0xff; |
| |
| dev_dbg(&dev->dev, " encode mem32 %#llx-%#llx\n", |
| (unsigned long long) res->start, (unsigned long long) res->end); |
| } |
| |
| static void pnpbios_encode_fixed_mem32(struct pnp_dev *dev, unsigned char *p, |
| struct resource *res) |
| { |
| unsigned long base = res->start; |
| unsigned long len = res->end - res->start + 1; |
| |
| p[4] = base & 0xff; |
| p[5] = (base >> 8) & 0xff; |
| p[6] = (base >> 16) & 0xff; |
| p[7] = (base >> 24) & 0xff; |
| p[8] = len & 0xff; |
| p[9] = (len >> 8) & 0xff; |
| p[10] = (len >> 16) & 0xff; |
| p[11] = (len >> 24) & 0xff; |
| |
| dev_dbg(&dev->dev, " encode fixed_mem32 %#llx-%#llx\n", |
| (unsigned long long) res->start, (unsigned long long) res->end); |
| } |
| |
| static void pnpbios_encode_irq(struct pnp_dev *dev, unsigned char *p, |
| struct resource *res) |
| { |
| unsigned long map = 0; |
| |
| map = 1 << res->start; |
| p[1] = map & 0xff; |
| p[2] = (map >> 8) & 0xff; |
| |
| dev_dbg(&dev->dev, " encode irq %d\n", res->start); |
| } |
| |
| static void pnpbios_encode_dma(struct pnp_dev *dev, unsigned char *p, |
| struct resource *res) |
| { |
| unsigned long map = 0; |
| |
| map = 1 << res->start; |
| p[1] = map & 0xff; |
| |
| dev_dbg(&dev->dev, " encode dma %d\n", res->start); |
| } |
| |
| static void pnpbios_encode_port(struct pnp_dev *dev, unsigned char *p, |
| struct resource *res) |
| { |
| unsigned long base = res->start; |
| unsigned long len = res->end - res->start + 1; |
| |
| p[2] = base & 0xff; |
| p[3] = (base >> 8) & 0xff; |
| p[4] = base & 0xff; |
| p[5] = (base >> 8) & 0xff; |
| p[7] = len & 0xff; |
| |
| dev_dbg(&dev->dev, " encode io %#llx-%#llx\n", |
| (unsigned long long) res->start, (unsigned long long) res->end); |
| } |
| |
| static void pnpbios_encode_fixed_port(struct pnp_dev *dev, unsigned char *p, |
| struct resource *res) |
| { |
| unsigned long base = res->start; |
| unsigned long len = res->end - res->start + 1; |
| |
| p[1] = base & 0xff; |
| p[2] = (base >> 8) & 0xff; |
| p[3] = len & 0xff; |
| |
| dev_dbg(&dev->dev, " encode fixed_io %#llx-%#llx\n", |
| (unsigned long long) res->start, (unsigned long long) res->end); |
| } |
| |
| static unsigned char *pnpbios_encode_allocated_resource_data(struct pnp_dev |
| *dev, |
| unsigned char *p, |
| unsigned char *end) |
| { |
| unsigned int len, tag; |
| int port = 0, irq = 0, dma = 0, mem = 0; |
| |
| if (!p) |
| return NULL; |
| |
| while ((char *)p < (char *)end) { |
| |
| /* determine the type of tag */ |
| if (p[0] & LARGE_TAG) { /* large tag */ |
| len = (p[2] << 8) | p[1]; |
| tag = p[0]; |
| } else { /* small tag */ |
| len = p[0] & 0x07; |
| tag = ((p[0] >> 3) & 0x0f); |
| } |
| |
| switch (tag) { |
| |
| case LARGE_TAG_MEM: |
| if (len != 9) |
| goto len_err; |
| pnpbios_encode_mem(dev, p, |
| pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
| mem++; |
| break; |
| |
| case LARGE_TAG_MEM32: |
| if (len != 17) |
| goto len_err; |
| pnpbios_encode_mem32(dev, p, |
| pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
| mem++; |
| break; |
| |
| case LARGE_TAG_FIXEDMEM32: |
| if (len != 9) |
| goto len_err; |
| pnpbios_encode_fixed_mem32(dev, p, |
| pnp_get_resource(dev, IORESOURCE_MEM, mem)); |
| mem++; |
| break; |
| |
| case SMALL_TAG_IRQ: |
| if (len < 2 || len > 3) |
| goto len_err; |
| pnpbios_encode_irq(dev, p, |
| pnp_get_resource(dev, IORESOURCE_IRQ, irq)); |
| irq++; |
| break; |
| |
| case SMALL_TAG_DMA: |
| if (len != 2) |
| goto len_err; |
| pnpbios_encode_dma(dev, p, |
| pnp_get_resource(dev, IORESOURCE_DMA, dma)); |
| dma++; |
| break; |
| |
| case SMALL_TAG_PORT: |
| if (len != 7) |
| goto len_err; |
| pnpbios_encode_port(dev, p, |
| pnp_get_resource(dev, IORESOURCE_IO, port)); |
| port++; |
| break; |
| |
| case SMALL_TAG_VENDOR: |
| /* do nothing */ |
| break; |
| |
| case SMALL_TAG_FIXEDPORT: |
| if (len != 3) |
| goto len_err; |
| pnpbios_encode_fixed_port(dev, p, |
| pnp_get_resource(dev, IORESOURCE_IO, port)); |
| port++; |
| break; |
| |
| case SMALL_TAG_END: |
| p = p + 2; |
| return (unsigned char *)p; |
| break; |
| |
| default: /* an unkown tag */ |
| len_err: |
| dev_err(&dev->dev, "unknown tag %#x length %d\n", |
| tag, len); |
| break; |
| } |
| |
| /* continue to the next tag */ |
| if (p[0] & LARGE_TAG) |
| p += len + 3; |
| else |
| p += len + 1; |
| } |
| |
| dev_err(&dev->dev, "no end tag in resource structure\n"); |
| |
| return NULL; |
| } |
| |
| /* |
| * Core Parsing Functions |
| */ |
| |
| int __init pnpbios_parse_data_stream(struct pnp_dev *dev, |
| struct pnp_bios_node *node) |
| { |
| unsigned char *p = (char *)node->data; |
| unsigned char *end = (char *)(node->data + node->size); |
| |
| p = pnpbios_parse_allocated_resource_data(dev, p, end); |
| if (!p) |
| return -EIO; |
| p = pnpbios_parse_resource_option_data(p, end, dev); |
| if (!p) |
| return -EIO; |
| p = pnpbios_parse_compatible_ids(p, end, dev); |
| if (!p) |
| return -EIO; |
| return 0; |
| } |
| |
| int pnpbios_read_resources_from_node(struct pnp_dev *dev, |
| struct pnp_bios_node *node) |
| { |
| unsigned char *p = (char *)node->data; |
| unsigned char *end = (char *)(node->data + node->size); |
| |
| p = pnpbios_parse_allocated_resource_data(dev, p, end); |
| if (!p) |
| return -EIO; |
| return 0; |
| } |
| |
| int pnpbios_write_resources_to_node(struct pnp_dev *dev, |
| struct pnp_bios_node *node) |
| { |
| unsigned char *p = (char *)node->data; |
| unsigned char *end = (char *)(node->data + node->size); |
| |
| p = pnpbios_encode_allocated_resource_data(dev, p, end); |
| if (!p) |
| return -EIO; |
| return 0; |
| } |