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-rw-r--r--sys/isa/pnpparse.c823
1 files changed, 497 insertions, 326 deletions
diff --git a/sys/isa/pnpparse.c b/sys/isa/pnpparse.c
index 976b0eb8c0c4f..9efc2fef18bd2 100644
--- a/sys/isa/pnpparse.c
+++ b/sys/isa/pnpparse.c
@@ -31,6 +31,9 @@
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/bus.h>
+
+#include <machine/stdarg.h>
+
#include <isa/isavar.h>
#include <isa/pnpreg.h>
#include <isa/pnpvar.h>
@@ -40,394 +43,562 @@
#define I16(p) ((p)[0] + ((p)[1] << 8))
#define I32(p) (I16(p) + (I16(p+2) << 16))
+void
+pnp_printf(u_int32_t id, char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ printf("%s: ", pnp_eisaformat(id));
+ vprintf(fmt, ap);
+ va_end(ap);
+}
+
+/* parse a single descriptor */
+
+static int
+pnp_parse_desc(device_t dev, u_char tag, u_char *res, int len,
+ struct isa_config *config, int ldn)
+{
+ char buf[100];
+ u_int32_t id;
+ u_int32_t compat_id;
+ int temp;
+
+ id = isa_get_logicalid(dev);
+
+ if (PNP_RES_TYPE(tag) == 0) {
+
+ /* Small resource */
+ switch (PNP_SRES_NUM(tag)) {
+
+ case PNP_TAG_VERSION:
+ case PNP_TAG_VENDOR:
+ /* these descriptors are quietly ignored */
+ break;
+
+ case PNP_TAG_LOGICAL_DEVICE:
+ case PNP_TAG_START_DEPENDANT:
+ case PNP_TAG_END_DEPENDANT:
+ if (bootverbose)
+ pnp_printf(id, "unexpected small tag %d\n",
+ PNP_SRES_NUM(tag));
+ /* shouldn't happen; quit now */
+ return (1);
+
+ case PNP_TAG_COMPAT_DEVICE:
+ /*
+ * Got a compatible device id resource.
+ * Should keep a list of compat ids in the device.
+ */
+ bcopy(res, &compat_id, 4);
+ if (isa_get_compatid(dev) == 0)
+ isa_set_compatid(dev, compat_id);
+ break;
+
+ case PNP_TAG_IRQ_FORMAT:
+ if (config->ic_nirq == ISA_NIRQ) {
+ pnp_printf(id, "too many irqs\n");
+ return (1);
+ }
+ if (I16(res) == 0) {
+ /* a null descriptor */
+ config->ic_irqmask[config->ic_nirq] = 0;
+ config->ic_nirq++;
+ break;
+ }
+ if (bootverbose)
+ pnp_printf(id, "adding irq mask %#02x\n",
+ I16(res));
+ config->ic_irqmask[config->ic_nirq] = I16(res);
+ config->ic_nirq++;
+ break;
+
+ case PNP_TAG_DMA_FORMAT:
+ if (config->ic_ndrq == ISA_NDRQ) {
+ pnp_printf(id, "too many drqs\n");
+ return (1);
+ }
+ if (res[0] == 0) {
+ /* a null descriptor */
+ config->ic_drqmask[config->ic_ndrq] = 0;
+ config->ic_ndrq++;
+ break;
+ }
+ if (bootverbose)
+ pnp_printf(id, "adding dma mask %#02x\n",
+ res[0]);
+ config->ic_drqmask[config->ic_ndrq] = res[0];
+ config->ic_ndrq++;
+ break;
+
+ case PNP_TAG_IO_RANGE:
+ if (config->ic_nport == ISA_NPORT) {
+ pnp_printf(id, "too many ports\n");
+ return (1);
+ }
+ if (res[6] == 0) {
+ /* a null descriptor */
+ config->ic_port[config->ic_nport].ir_start = 0;
+ config->ic_port[config->ic_nport].ir_end = 0;
+ config->ic_port[config->ic_nport].ir_size = 0;
+ config->ic_port[config->ic_nport].ir_align = 0;
+ config->ic_nport++;
+ break;
+ }
+ if (bootverbose) {
+ pnp_printf(id, "adding io range "
+ "%#x-%#x, size=%#x, "
+ "align=%#x\n",
+ I16(res + 1),
+ I16(res + 3) + res[6]-1,
+ res[6], res[5]);
+ }
+ config->ic_port[config->ic_nport].ir_start =
+ I16(res + 1);
+ config->ic_port[config->ic_nport].ir_end =
+ I16(res + 3) + res[6] - 1;
+ config->ic_port[config->ic_nport].ir_size = res[6];
+ if (res[5] == 0) {
+ /* Make sure align is at least one */
+ res[5] = 1;
+ }
+ config->ic_port[config->ic_nport].ir_align = res[5];
+ config->ic_nport++;
+ pnp_check_quirks(isa_get_vendorid(dev),
+ isa_get_logicalid(dev), ldn, config);
+ break;
+
+ case PNP_TAG_IO_FIXED:
+ if (config->ic_nport == ISA_NPORT) {
+ pnp_printf(id, "too many ports\n");
+ return (1);
+ }
+ if (res[2] == 0) {
+ /* a null descriptor */
+ config->ic_port[config->ic_nport].ir_start = 0;
+ config->ic_port[config->ic_nport].ir_end = 0;
+ config->ic_port[config->ic_nport].ir_size = 0;
+ config->ic_port[config->ic_nport].ir_align = 0;
+ config->ic_nport++;
+ break;
+ }
+ if (bootverbose) {
+ pnp_printf(id, "adding fixed io range "
+ "%#x-%#x, size=%#x, "
+ "align=%#x\n",
+ I16(res),
+ I16(res) + res[2] - 1,
+ res[2], 1);
+ }
+ config->ic_port[config->ic_nport].ir_start = I16(res);
+ config->ic_port[config->ic_nport].ir_end =
+ I16(res) + res[2] - 1;
+ config->ic_port[config->ic_nport].ir_size = res[2];
+ config->ic_port[config->ic_nport].ir_align = 1;
+ config->ic_nport++;
+ break;
+
+ case PNP_TAG_END:
+ if (bootverbose)
+ pnp_printf(id, "end config\n");
+ return (1);
+
+ default:
+ /* Skip this resource */
+ pnp_printf(id, "unexpected small tag %d\n",
+ PNP_SRES_NUM(tag));
+ break;
+ }
+ } else {
+ /* Large resource */
+ switch (PNP_LRES_NUM(tag)) {
+
+ case PNP_TAG_ID_UNICODE:
+ case PNP_TAG_LARGE_VENDOR:
+ /* these descriptors are quietly ignored */
+ break;
+
+ case PNP_TAG_ID_ANSI:
+ if (len > sizeof(buf) - 1)
+ len = sizeof(buf) - 1;
+ bcopy(res, buf, len);
+
+ /*
+ * Trim trailing spaces and garbage.
+ */
+ while (len > 0 && buf[len - 1] <= ' ')
+ len--;
+ buf[len] = '\0';
+ device_set_desc_copy(dev, buf);
+ break;
+
+ case PNP_TAG_MEMORY_RANGE:
+ if (config->ic_nmem == ISA_NMEM) {
+ pnp_printf(id, "too many memory ranges\n");
+ return (1);
+ }
+ if (I16(res + 7) == 0) {
+ /* a null descriptor */
+ config->ic_mem[config->ic_nmem].ir_start = 0;
+ config->ic_mem[config->ic_nmem].ir_end = 0;
+ config->ic_mem[config->ic_nmem].ir_size = 0;
+ config->ic_mem[config->ic_nmem].ir_align = 0;
+ config->ic_nmem++;
+ break;
+ }
+ if (bootverbose) {
+ temp = I16(res + 7) << 8;
+ pnp_printf(id, "adding memory range "
+ "%#x-%#x, size=%#x, "
+ "align=%#x\n",
+ I16(res + 1) << 8,
+ (I16(res + 3) << 8) + temp - 1,
+ temp, I16(res + 5));
+ }
+ config->ic_mem[config->ic_nmem].ir_start =
+ I16(res + 1) << 8;
+ config->ic_mem[config->ic_nmem].ir_end =
+ (I16(res + 3) << 8) + (I16(res + 7) << 8) - 1;
+ config->ic_mem[config->ic_nmem].ir_size =
+ I16(res + 7) << 8;
+ config->ic_mem[config->ic_nmem].ir_align = I16(res + 5);
+ if (!config->ic_mem[config->ic_nmem].ir_align)
+ config->ic_mem[config->ic_nmem].ir_align =
+ 0x10000;
+ config->ic_nmem++;
+ break;
+
+ case PNP_TAG_MEMORY32_RANGE:
+ if (config->ic_nmem == ISA_NMEM) {
+ pnp_printf(id, "too many memory ranges\n");
+ return (1);
+ }
+ if (I32(res + 13) == 0) {
+ /* a null descriptor */
+ config->ic_mem[config->ic_nmem].ir_start = 0;
+ config->ic_mem[config->ic_nmem].ir_end = 0;
+ config->ic_mem[config->ic_nmem].ir_size = 0;
+ config->ic_mem[config->ic_nmem].ir_align = 0;
+ config->ic_nmem++;
+ break;
+ }
+ if (bootverbose) {
+ pnp_printf(id, "adding memory32 range "
+ "%#x-%#x, size=%#x, "
+ "align=%#x\n",
+ I32(res + 1),
+ I32(res + 5) + I32(res + 13) - 1,
+ I32(res + 13), I32(res + 9));
+ }
+ config->ic_mem[config->ic_nmem].ir_start = I32(res + 1);
+ config->ic_mem[config->ic_nmem].ir_end =
+ I32(res + 5) + I32(res + 13) - 1;
+ config->ic_mem[config->ic_nmem].ir_size = I32(res + 13);
+ config->ic_mem[config->ic_nmem].ir_align = I32(res + 9);
+ config->ic_nmem++;
+ break;
+
+ case PNP_TAG_MEMORY32_FIXED:
+ if (config->ic_nmem == ISA_NMEM) {
+ pnp_printf(id, "too many memory ranges\n");
+ return (1);
+ }
+ if (I32(res + 5) == 0) {
+ /* a null descriptor */
+ config->ic_mem[config->ic_nmem].ir_start = 0;
+ config->ic_mem[config->ic_nmem].ir_end = 0;
+ config->ic_mem[config->ic_nmem].ir_size = 0;
+ config->ic_mem[config->ic_nmem].ir_align = 0;
+ break;
+ }
+ if (bootverbose) {
+ pnp_printf(id, "adding fixed memory32 range "
+ "%#x-%#x, size=%#x\n",
+ I32(res + 1),
+ I32(res + 1) + I32(res + 5) - 1,
+ I32(res + 5));
+ }
+ config->ic_mem[config->ic_nmem].ir_start = I32(res + 1);
+ config->ic_mem[config->ic_nmem].ir_end =
+ I32(res + 1) + I32(res + 5) - 1;
+ config->ic_mem[config->ic_nmem].ir_size = I32(res + 5);
+ config->ic_mem[config->ic_nmem].ir_align = 1;
+ config->ic_nmem++;
+ break;
+
+ default:
+ /* Skip this resource */
+ pnp_printf(id, "unexpected large tag %d\n",
+ PNP_SRES_NUM(tag));
+ break;
+ }
+ }
+
+ return (0);
+}
+
+/*
+ * Parse a single "dependent" resource combination.
+ */
+
+u_char
+*pnp_parse_dependant(device_t dev, u_char *resources, int len,
+ struct isa_config *config, int ldn)
+{
+
+ return pnp_scan_resources(dev, resources, len, config, ldn,
+ pnp_parse_desc);
+}
+
+static void
+pnp_merge_resources(device_t dev, struct isa_config *from,
+ struct isa_config *to)
+{
+ device_t parent;
+ int i;
+
+ parent = device_get_parent(dev);
+ for (i = 0; i < from->ic_nmem; i++) {
+ if (to->ic_nmem == ISA_NMEM) {
+ device_printf(parent, "too many memory ranges\n");
+ return;
+ }
+ to->ic_mem[to->ic_nmem] = from->ic_mem[i];
+ to->ic_nmem++;
+ }
+ for (i = 0; i < from->ic_nport; i++) {
+ if (to->ic_nport == ISA_NPORT) {
+ device_printf(parent, "too many port ranges\n");
+ return;
+ }
+ to->ic_port[to->ic_nport] = from->ic_port[i];
+ to->ic_nport++;
+ }
+ for (i = 0; i < from->ic_nirq; i++) {
+ if (to->ic_nirq == ISA_NIRQ) {
+ device_printf(parent, "too many irq ranges\n");
+ return;
+ }
+ to->ic_irqmask[to->ic_nirq] = from->ic_irqmask[i];
+ to->ic_nirq++;
+ }
+ for (i = 0; i < from->ic_ndrq; i++) {
+ if (to->ic_ndrq == ISA_NDRQ) {
+ device_printf(parent, "too many drq ranges\n");
+ return;
+ }
+ to->ic_drqmask[to->ic_ndrq] = from->ic_drqmask[i];
+ to->ic_ndrq++;
+ }
+}
+
/*
- * Parse resource data for Logical Devices.
+ * Parse resource data for Logical Devices, make a list of available
+ * resource configurations, and add them to the device.
*
* This function exits as soon as it gets an error reading *ANY*
* Resource Data or it reaches the end of Resource Data.
*/
+
void
-pnp_parse_resources(device_t dev, u_char *resources, int len, u_int32_t vendor_id, u_int32_t logical_id, int ldn)
+pnp_parse_resources(device_t dev, u_char *resources, int len, int ldn)
{
- device_t parent = device_get_parent(dev);
- u_char tag, *resp, *resinfo;
- int large_len, scanning = len;
- u_int32_t id, compat_id;
+ struct isa_config *configs;
struct isa_config *config;
- int ncfgs = 1;
+ device_t parent;
int priorities[1 + MAXDEP];
- struct isa_config *configs;
- char buf[100];
+ u_char *start;
+ u_char *p;
+ u_char tag;
+ u_int32_t id;
+ int ncfgs;
+ int l;
int i;
+ parent = device_get_parent(dev);
id = isa_get_logicalid(dev);
- configs = (struct isa_config *)malloc(sizeof(*configs) * (1 + MAXDEP),
- M_DEVBUF, M_NOWAIT | M_ZERO);
+
+ configs = (struct isa_config *)malloc(sizeof(*configs)*(1 + MAXDEP),
+ M_DEVBUF, M_NOWAIT | M_ZERO);
if (configs == NULL) {
- device_printf(dev, "No memory to parse PNP data\n");
+ device_printf(parent, "No memory to parse PNP data\n");
return;
}
config = &configs[0];
priorities[0] = 0;
- resp = resources;
- while (scanning > 0) {
- tag = *resp++;
- scanning--;
+ ncfgs = 1;
+
+ p = resources;
+ start = NULL;
+ while (len > 0) {
+ tag = *p++;
+ len--;
if (PNP_RES_TYPE(tag) == 0) {
/* Small resource */
- if (scanning < PNP_SRES_LEN(tag)) {
- scanning = 0;
+ l = PNP_SRES_LEN(tag);
+ if (len < l) {
+ len = 0;
continue;
}
- resinfo = resp;
- resp += PNP_SRES_LEN(tag);
- scanning -= PNP_SRES_LEN(tag);;
-
- switch (PNP_SRES_NUM(tag)) {
- case PNP_TAG_COMPAT_DEVICE:
- /*
- * Got a compatible device id
- * resource. Should keep a list of
- * compat ids in the device.
- */
- bcopy(resinfo, &compat_id, 4);
- isa_set_compatid(dev, compat_id);
- break;
-
- case PNP_TAG_IRQ_FORMAT:
- if (!I16(resinfo))
- break;
- if (bootverbose) {
- printf("%s: adding irq mask %#02x\n",
- pnp_eisaformat(id),
- I16(resinfo));
- }
- if (config->ic_nirq == ISA_NIRQ) {
- device_printf(parent, "too many irqs\n");
- scanning = 0;
- break;
- }
- config->ic_irqmask[config->ic_nirq] =
- I16(resinfo);
- config->ic_nirq++;
- break;
+ len -= l;
- case PNP_TAG_DMA_FORMAT:
- if (bootverbose) {
- printf("%s: adding dma mask %#02x\n",
- pnp_eisaformat(id),
- resinfo[0]);
- }
- if (config->ic_ndrq == ISA_NDRQ) {
- device_printf(parent, "too many drqs\n");
- scanning = 0;
- break;
- }
- config->ic_drqmask[config->ic_ndrq] =
- resinfo[0];
- config->ic_ndrq++;
- break;
+ switch (PNP_SRES_NUM(tag)) {
case PNP_TAG_START_DEPENDANT:
- if (bootverbose) {
- printf("%s: start dependant\n",
- pnp_eisaformat(id));
+ if (start != NULL) {
+ /*
+ * Copy the common resources first,
+ * then parse the "dependent" resources.
+ */
+ pnp_merge_resources(dev, &configs[0],
+ config);
+ pnp_parse_dependant(dev, start,
+ p - start - 1,
+ config, ldn);
}
+ start = p + l;
if (ncfgs > MAXDEP) {
device_printf(parent, "too many dependant configs (%d)\n", MAXDEP);
- scanning = 0;
+ len = 0;
break;
}
config = &configs[ncfgs];
/*
* If the priority is not specified,
- * then use the default of
- * 'acceptable'
+ * then use the default of 'acceptable'
*/
- if (PNP_SRES_LEN(tag) > 0)
- priorities[ncfgs] = resinfo[0];
+ if (l > 0)
+ priorities[ncfgs] = p[0];
else
priorities[ncfgs] = 1;
+ if (bootverbose)
+ pnp_printf(id, "start dependent (%d)\n",
+ priorities[ncfgs]);
ncfgs++;
break;
case PNP_TAG_END_DEPENDANT:
- if (bootverbose) {
- printf("%s: end dependant\n",
- pnp_eisaformat(id));
- }
- config = &configs[0]; /* back to main config */
- break;
-
- case PNP_TAG_IO_RANGE:
- if (bootverbose) {
- printf("%s: adding io range "
- "%#x-%#x, size=%#x, "
- "align=%#x\n",
- pnp_eisaformat(id),
- I16(resinfo + 1),
- I16(resinfo + 3) + resinfo[6]-1,
- resinfo[6],
- resinfo[5]);
- }
- if (config->ic_nport == ISA_NPORT) {
- device_printf(parent, "too many ports\n");
- scanning = 0;
+ if (start == NULL) {
+ device_printf(parent,
+ "malformed resources\n");
+ len = 0;
break;
}
- config->ic_port[config->ic_nport].ir_start =
- I16(resinfo + 1);
- config->ic_port[config->ic_nport].ir_end =
- I16(resinfo + 3) + resinfo[6] - 1;
- config->ic_port[config->ic_nport].ir_size =
- resinfo[6];
- if (resinfo[5] == 0) {
- /* Make sure align is at least one */
- resinfo[5] = 1;
- }
- config->ic_port[config->ic_nport].ir_align =
- resinfo[5];
- config->ic_nport++;
- pnp_check_quirks(vendor_id,
- logical_id,
- ldn, config);
- break;
-
- case PNP_TAG_IO_FIXED:
- if (bootverbose) {
- printf("%s: adding fixed io range "
- "%#x-%#x, size=%#x, "
- "align=%#x\n",
- pnp_eisaformat(id),
- I16(resinfo),
- I16(resinfo) + resinfo[2] - 1,
- resinfo[2],
- 1);
- }
- if (config->ic_nport == ISA_NPORT) {
- device_printf(parent, "too many ports\n");
- scanning = 0;
- break;
- }
- config->ic_port[config->ic_nport].ir_start =
- I16(resinfo);
- config->ic_port[config->ic_nport].ir_end =
- I16(resinfo) + resinfo[2] - 1;
- config->ic_port[config->ic_nport].ir_size
- = resinfo[2];
- config->ic_port[config->ic_nport].ir_align = 1;
- config->ic_nport++;
+ /*
+ * Copy the common resources first,
+ * then parse the "dependent" resources.
+ */
+ pnp_merge_resources(dev, &configs[0], config);
+ pnp_parse_dependant(dev, start, p - start - 1,
+ config, ldn);
+ start = NULL;
+ if (bootverbose)
+ pnp_printf(id, "end dependent\n");
+ /*
+ * Back to the common part; clear it
+ * as its contents has already been copied
+ * to each dependant.
+ */
+ config = &configs[0];
+ bzero(config, sizeof(*config));
break;
case PNP_TAG_END:
- if (bootverbose) {
- printf("%s: end config\n",
- pnp_eisaformat(id));
+ if (start != NULL) {
+ device_printf(parent,
+ "malformed resources\n");
}
- scanning = 0;
+ len = 0;
break;
default:
- /* Skip this resource */
- device_printf(parent, "unexpected small tag %d\n",
- PNP_SRES_NUM(tag));
+ if (start != NULL)
+ /* defer parsing a dependent section */
+ break;
+ if (pnp_parse_desc(dev, tag, p, l, config, ldn))
+ len = 0;
break;
}
+ p += l;
} else {
/* Large resource */
- if (scanning < 2) {
- scanning = 0;
- continue;
- }
- large_len = I16(resp);
- resp += 2;
- scanning -= 2;
-
- if (scanning < large_len) {
- scanning = 0;
- continue;
- }
- resinfo = resp;
- resp += large_len;
- scanning -= large_len;
-
- switch (PNP_LRES_NUM(tag)) {
- case PNP_TAG_ID_ANSI:
- if (large_len > sizeof(buf) - 1)
- large_len = sizeof(buf) - 1;
- bcopy(resinfo, buf, large_len);
-
- /*
- * Trim trailing spaces and garbage.
- */
- while (large_len > 0 && buf[large_len - 1] <= ' ')
- large_len--;
- buf[large_len] = '\0';
- device_set_desc_copy(dev, buf);
- break;
-
- case PNP_TAG_MEMORY_RANGE:
- if (bootverbose) {
- int temp = I16(resinfo + 7) << 8;
-
- printf("%s: adding memory range "
- "%#x-%#x, size=%#x, "
- "align=%#x\n",
- pnp_eisaformat(id),
- I16(resinfo + 1)<<8,
- (I16(resinfo + 3)<<8) + temp - 1,
- temp,
- I16(resinfo + 5));
- }
-
- if (config->ic_nmem == ISA_NMEM) {
- device_printf(parent, "too many memory ranges\n");
- scanning = 0;
- break;
- }
-
- config->ic_mem[config->ic_nmem].ir_start =
- I16(resinfo + 1)<<8;
- config->ic_mem[config->ic_nmem].ir_end =
- (I16(resinfo + 3)<<8)
- + (I16(resinfo + 7) << 8) - 1;
- config->ic_mem[config->ic_nmem].ir_size =
- I16(resinfo + 7) << 8;
- config->ic_mem[config->ic_nmem].ir_align =
- I16(resinfo + 5);
- if (!config->ic_mem[config->ic_nmem].ir_align)
- config->ic_mem[config->ic_nmem]
- .ir_align = 0x10000;
- config->ic_nmem++;
+ if (len < 2) {
+ len = 0;
break;
-
- case PNP_TAG_MEMORY32_RANGE:
- if (I32(resinfo + 13) == 0) {
- if (bootverbose) {
- printf("%s: skipping empty range\n",
- pnp_eisaformat(id));
- }
- continue;
- }
- if (bootverbose) {
- printf("%s: adding memory32 range "
- "%#x-%#x, size=%#x, "
- "align=%#x\n",
- pnp_eisaformat(id),
- I32(resinfo + 1),
- I32(resinfo + 5)
- + I32(resinfo + 13) - 1,
- I32(resinfo + 13),
- I32(resinfo + 9));
- }
-
- if (config->ic_nmem == ISA_NMEM) {
- device_printf(parent, "too many memory ranges\n");
- scanning = 0;
- break;
- }
-
- config->ic_mem[config->ic_nmem].ir_start =
- I32(resinfo + 1);
- config->ic_mem[config->ic_nmem].ir_end =
- I32(resinfo + 5)
- + I32(resinfo + 13) - 1;
- config->ic_mem[config->ic_nmem].ir_size =
- I32(resinfo + 13);
- config->ic_mem[config->ic_nmem].ir_align =
- I32(resinfo + 9);
- config->ic_nmem++;
+ }
+ l = I16(p);
+ p += 2;
+ len -= 2;
+ if (len < l) {
+ len = 0;
break;
-
- case PNP_TAG_MEMORY32_FIXED:
- if (I32(resinfo + 5) == 0) {
- if (bootverbose) {
- printf("%s: skipping empty range\n",
- pnp_eisaformat(id));
- }
- continue;
- }
- if (bootverbose) {
- printf("%s: adding fixed memory32 range "
- "%#x-%#x, size=%#x\n",
- pnp_eisaformat(id),
- I32(resinfo + 1),
- I32(resinfo + 1)
- + I32(resinfo + 5) - 1,
- I32(resinfo + 5));
- }
-
- if (config->ic_nmem == ISA_NMEM) {
- device_printf(parent, "too many memory ranges\n");
- scanning = 0;
- break;
- }
-
- config->ic_mem[config->ic_nmem].ir_start =
- I32(resinfo + 1);
- config->ic_mem[config->ic_nmem].ir_end =
- I32(resinfo + 1)
- + I32(resinfo + 5) - 1;
- config->ic_mem[config->ic_nmem].ir_size =
- I32(resinfo + 5);
- config->ic_mem[config->ic_nmem].ir_align = 1;
- config->ic_nmem++;
+ }
+ len -= l;
+ if (start == NULL &&
+ pnp_parse_desc(dev, tag, p, l, config, ldn)) {
+ len = 0;
break;
-
- default:
- /* Skip this resource */
- device_printf(parent, "unexpected large tag %d\n",
- PNP_SRES_NUM(tag));
}
+ p += l;
}
}
- if(ncfgs == 1) {
+
+ if (ncfgs == 1) {
/* Single config without dependants */
- (void)ISA_ADD_CONFIG(parent, dev, priorities[0], &configs[0]);
+ ISA_ADD_CONFIG(parent, dev, priorities[0], &configs[0]);
free(configs, M_DEVBUF);
return;
}
- /* Cycle through dependant configs merging primary details */
- for(i = 1; i < ncfgs; i++) {
- int j;
- config = &configs[i];
- for(j = 0; j < configs[0].ic_nmem; j++) {
- if (config->ic_nmem == ISA_NMEM) {
- device_printf(parent, "too many memory ranges\n");
- free(configs, M_DEVBUF);
- return;
- }
- config->ic_mem[config->ic_nmem] = configs[0].ic_mem[j];
- config->ic_nmem++;
- }
- for(j = 0; j < configs[0].ic_nport; j++) {
- if (config->ic_nport == ISA_NPORT) {
- device_printf(parent, "too many port ranges\n");
- free(configs, M_DEVBUF);
- return;
- }
- config->ic_port[config->ic_nport] = configs[0].ic_port[j];
- config->ic_nport++;
- }
- for(j = 0; j < configs[0].ic_nirq; j++) {
- if (config->ic_nirq == ISA_NIRQ) {
- device_printf(parent, "too many irq ranges\n");
- free(configs, M_DEVBUF);
- return;
- }
- config->ic_irqmask[config->ic_nirq] = configs[0].ic_irqmask[j];
- config->ic_nirq++;
- }
- for(j = 0; j < configs[0].ic_ndrq; j++) {
- if (config->ic_ndrq == ISA_NDRQ) {
- device_printf(parent, "too many drq ranges\n");
- free(configs, M_DEVBUF);
- return;
- }
- config->ic_drqmask[config->ic_ndrq] = configs[0].ic_drqmask[j];
- config->ic_ndrq++;
- }
- (void)ISA_ADD_CONFIG(parent, dev, priorities[i], &configs[i]);
+
+ for (i = 1; i < ncfgs; i++) {
+ /*
+ * Merge the remaining part of the common resources,
+ * if any. Strictly speaking, there shouldn't be common/main
+ * resources after the END_DEPENDENT tag.
+ */
+ pnp_merge_resources(dev, &configs[0], &configs[i]);
+ ISA_ADD_CONFIG(parent, dev, priorities[i], &configs[i]);
}
+
free(configs, M_DEVBUF);
}
+
+u_char
+*pnp_scan_resources(device_t dev, u_char *resources, int len,
+ struct isa_config *config, int ldn, pnp_scan_cb *cb)
+{
+ u_char *p;
+ u_char tag;
+ int l;
+
+ p = resources;
+ while (len > 0) {
+ tag = *p++;
+ len--;
+ if (PNP_RES_TYPE(tag) == 0) {
+ /* small resource */
+ l = PNP_SRES_LEN(tag);
+ if (len < l)
+ break;
+ if ((*cb)(dev, tag, p, l, config, ldn))
+ return (p + l);
+ if (PNP_SRES_NUM(tag) == PNP_TAG_END)
+ return (p + l);
+ } else {
+ /* large resource */
+ if (len < 2)
+ break;
+ l = I16(p);
+ p += 2;
+ len -= 2;
+ if (len < l)
+ break;
+ if ((*cb)(dev, tag, p, l, config, ldn))
+ return (p + l);
+ }
+ p += l;
+ len -= l;
+ }
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-13 13:41:10 +0000