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path: root/drivers/pnp/pnpbios/rsparser.c
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Diffstat (limited to 'drivers/pnp/pnpbios/rsparser.c')
-rw-r--r--drivers/pnp/pnpbios/rsparser.c795
1 files changed, 795 insertions, 0 deletions
diff --git a/drivers/pnp/pnpbios/rsparser.c b/drivers/pnp/pnpbios/rsparser.c
new file mode 100644
index 000000000000..618ac15a9e90
--- /dev/null
+++ b/drivers/pnp/pnpbios/rsparser.c
@@ -0,0 +1,795 @@
+/*
+ * rsparser.c - parses and encodes pnpbios resource data streams
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/ctype.h>
+#include <linux/pnp.h>
+#include <linux/pnpbios.h>
+
+#ifdef CONFIG_PCI
+#include <linux/pci.h>
+#else
+inline void pcibios_penalize_isa_irq(int irq) {}
+#endif /* CONFIG_PCI */
+
+#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_resource_table * res, int irq)
+{
+ 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);
+ }
+}
+
+static void
+pnpbios_parse_allocated_dmaresource(struct pnp_resource_table * res, int dma)
+{
+ int i = 0;
+ while (!(res->dma_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_DMA) 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_resource_table * res, int io, int len)
+{
+ 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_resource_table * res, int mem, int len)
+{
+ 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(unsigned char * p, unsigned char * end, struct pnp_resource_table * res)
+{
+ unsigned int len, tag;
+ int io, size, mask, i;
+
+ if (!p)
+ return NULL;
+
+ /* Blank the resource table values */
+ pnp_init_resource_table(res);
+
+ 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(res, 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(res, 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(res, 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(res, 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(res, 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(res, 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(res, io, size);
+ break;
+
+ case SMALL_TAG_END:
+ p = p + 2;
+ return (unsigned char *)p;
+ break;
+
+ default: /* an unkown tag */
+ len_err:
+ printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len);
+ break;
+ }
+
+ /* continue to the next tag */
+ if (p[0] & LARGE_TAG)
+ p += len + 3;
+ else
+ p += len + 1;
+ }
+
+ printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n");
+
+ return NULL;
+}
+
+
+/*
+ * Resource Configuration Options
+ */
+
+static void
+pnpbios_parse_mem_option(unsigned char *p, int size, struct pnp_option *option)
+{
+ struct pnp_mem * mem;
+ mem = pnpbios_kmalloc(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(option,mem);
+ return;
+}
+
+static void
+pnpbios_parse_mem32_option(unsigned char *p, int size, struct pnp_option *option)
+{
+ struct pnp_mem * mem;
+ mem = pnpbios_kmalloc(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(option,mem);
+ return;
+}
+
+static void
+pnpbios_parse_fixed_mem32_option(unsigned char *p, int size, struct pnp_option *option)
+{
+ struct pnp_mem * mem;
+ mem = pnpbios_kmalloc(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(option,mem);
+ return;
+}
+
+static void
+pnpbios_parse_irq_option(unsigned char *p, int size, struct pnp_option *option)
+{
+ struct pnp_irq * irq;
+ unsigned long bits;
+
+ irq = pnpbios_kmalloc(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(option,irq);
+ return;
+}
+
+static void
+pnpbios_parse_dma_option(unsigned char *p, int size, struct pnp_option *option)
+{
+ struct pnp_dma * dma;
+ dma = pnpbios_kmalloc(sizeof(struct pnp_dma), GFP_KERNEL);
+ if (!dma)
+ return;
+ dma->map = p[1];
+ dma->flags = p[2];
+ pnp_register_dma_resource(option,dma);
+ return;
+}
+
+static void
+pnpbios_parse_port_option(unsigned char *p, int size, struct pnp_option *option)
+{
+ struct pnp_port * port;
+ port = pnpbios_kmalloc(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(option,port);
+ return;
+}
+
+static void
+pnpbios_parse_fixed_port_option(unsigned char *p, int size, struct pnp_option *option)
+{
+ struct pnp_port * port;
+ port = pnpbios_kmalloc(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(option,port);
+ return;
+}
+
+static 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;
+
+ 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(p, len, option);
+ break;
+
+ case LARGE_TAG_MEM32:
+ if (len != 17)
+ goto len_err;
+ pnpbios_parse_mem32_option(p, len, option);
+ break;
+
+ case LARGE_TAG_FIXEDMEM32:
+ if (len != 9)
+ goto len_err;
+ pnpbios_parse_fixed_mem32_option(p, len, option);
+ break;
+
+ case SMALL_TAG_IRQ:
+ if (len < 2 || len > 3)
+ goto len_err;
+ pnpbios_parse_irq_option(p, len, option);
+ break;
+
+ case SMALL_TAG_DMA:
+ if (len != 2)
+ goto len_err;
+ pnpbios_parse_dma_option(p, len, option);
+ break;
+
+ case SMALL_TAG_PORT:
+ if (len != 7)
+ goto len_err;
+ pnpbios_parse_port_option(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(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)
+ printk(KERN_WARNING "PnPBIOS: Missing SMALL_TAG_STARTDEP tag\n");
+ option = option_independent;
+ break;
+
+ case SMALL_TAG_END:
+ if (option_independent != option)
+ printk(KERN_WARNING "PnPBIOS: Missing SMALL_TAG_ENDDEP tag\n");
+ p = p + 2;
+ return (unsigned char *)p;
+ break;
+
+ default: /* an unkown tag */
+ len_err:
+ printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len);
+ break;
+ }
+
+ /* continue to the next tag */
+ if (p[0] & LARGE_TAG)
+ p += len + 3;
+ else
+ p += len + 1;
+ }
+
+ printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n");
+
+ return NULL;
+}
+
+
+/*
+ * Compatible Device IDs
+ */
+
+#define HEX(id,a) hex[((id)>>a) & 15]
+#define CHAR(id,a) (0x40 + (((id)>>a) & 31))
+//
+
+void pnpid32_to_pnpid(u32 id, char *str)
+{
+ const char *hex = "0123456789abcdef";
+
+ id = be32_to_cpu(id);
+ str[0] = CHAR(id, 26);
+ str[1] = CHAR(id, 21);
+ str[2] = CHAR(id,16);
+ str[3] = HEX(id, 12);
+ str[4] = HEX(id, 8);
+ str[5] = HEX(id, 4);
+ str[6] = HEX(id, 0);
+ str[7] = '\0';
+
+ return;
+}
+//
+#undef CHAR
+#undef HEX
+
+static unsigned char *
+pnpbios_parse_compatible_ids(unsigned char *p, unsigned char *end, struct pnp_dev *dev)
+{
+ int len, tag;
+ 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;
+ dev_id = pnpbios_kmalloc(sizeof (struct pnp_id), GFP_KERNEL);
+ if (!dev_id)
+ return NULL;
+ memset(dev_id, 0, sizeof(struct pnp_id));
+ pnpid32_to_pnpid(p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24,id);
+ memcpy(&dev_id->id, id, 7);
+ pnp_add_id(dev_id, dev);
+ break;
+
+ case SMALL_TAG_END:
+ p = p + 2;
+ return (unsigned char *)p;
+ break;
+
+ default: /* an unkown tag */
+ len_err:
+ printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len);
+ break;
+ }
+
+ /* continue to the next tag */
+ if (p[0] & LARGE_TAG)
+ p += len + 3;
+ else
+ p += len + 1;
+ }
+
+ printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n");
+
+ return NULL;
+}
+
+
+/*
+ * Allocated Resource Encoding
+ */
+
+static void pnpbios_encode_mem(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;
+ return;
+}
+
+static void pnpbios_encode_mem32(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;
+ return;
+}
+
+static void pnpbios_encode_fixed_mem32(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;
+ return;
+}
+
+static void pnpbios_encode_irq(unsigned char *p, struct resource * res)
+{
+ unsigned long map = 0;
+ map = 1 << res->start;
+ p[1] = map & 0xff;
+ p[2] = (map >> 8) & 0xff;
+ return;
+}
+
+static void pnpbios_encode_dma(unsigned char *p, struct resource * res)
+{
+ unsigned long map = 0;
+ map = 1 << res->start;
+ p[1] = map & 0xff;
+ return;
+}
+
+static void pnpbios_encode_port(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;
+ return;
+}
+
+static void pnpbios_encode_fixed_port(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;
+ return;
+}
+
+static unsigned char *
+pnpbios_encode_allocated_resource_data(unsigned char * p, unsigned char * end, struct pnp_resource_table * res)
+{
+ 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(p, &res->mem_resource[mem]);
+ mem++;
+ break;
+
+ case LARGE_TAG_MEM32:
+ if (len != 17)
+ goto len_err;
+ pnpbios_encode_mem32(p, &res->mem_resource[mem]);
+ mem++;
+ break;
+
+ case LARGE_TAG_FIXEDMEM32:
+ if (len != 9)
+ goto len_err;
+ pnpbios_encode_fixed_mem32(p, &res->mem_resource[mem]);
+ mem++;
+ break;
+
+ case SMALL_TAG_IRQ:
+ if (len < 2 || len > 3)
+ goto len_err;
+ pnpbios_encode_irq(p, &res->irq_resource[irq]);
+ irq++;
+ break;
+
+ case SMALL_TAG_DMA:
+ if (len != 2)
+ goto len_err;
+ pnpbios_encode_dma(p, &res->dma_resource[dma]);
+ dma++;
+ break;
+
+ case SMALL_TAG_PORT:
+ if (len != 7)
+ goto len_err;
+ pnpbios_encode_port(p, &res->port_resource[port]);
+ port++;
+ break;
+
+ case SMALL_TAG_VENDOR:
+ /* do nothing */
+ break;
+
+ case SMALL_TAG_FIXEDPORT:
+ if (len != 3)
+ goto len_err;
+ pnpbios_encode_fixed_port(p, &res->port_resource[port]);
+ port++;
+ break;
+
+ case SMALL_TAG_END:
+ p = p + 2;
+ return (unsigned char *)p;
+ break;
+
+ default: /* an unkown tag */
+ len_err:
+ printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len);
+ break;
+ }
+
+ /* continue to the next tag */
+ if (p[0] & LARGE_TAG)
+ p += len + 3;
+ else
+ p += len + 1;
+ }
+
+ printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n");
+
+ return NULL;
+}
+
+
+/*
+ * Core Parsing Functions
+ */
+
+int
+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(p,end,&dev->res);
+ 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_resource_table *res,
+ 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(p,end,res);
+ if (!p)
+ return -EIO;
+ return 0;
+}
+
+int
+pnpbios_write_resources_to_node(struct pnp_resource_table *res,
+ 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(p,end,res);
+ if (!p)
+ return -EIO;
+ return 0;
+}