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isa_common.c
(26.61 KB)
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isa_common.h
(2.93 KB)
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isa_dmareg.h
(2.43 KB)
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isa_if.m
(2.38 KB)
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isahint.c
(5.26 KB)
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isareg.h
(2.48 KB)
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isavar.h
(5.81 KB)
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pnp.c
(19.04 KB)
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pnpparse.c
(14.81 KB)
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pnpreg.h
(9.02 KB)
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pnpvar.h
(2.53 KB)
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rtc.h
(4.98 KB)
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syscons_isa.c
(5.27 KB)
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vga_isa.c
(8.87 KB)
Editing: pnpparse.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 1999 Doug Rabson * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/systm.h> #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> #define MAXDEP 8 #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, 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, int ldn) { struct isa_config *configs; struct isa_config *config; device_t parent; int priorities[1 + MAXDEP]; 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); if (configs == NULL) { device_printf(parent, "No memory to parse PNP data\n"); return; } config = &configs[0]; priorities[0] = 0; ncfgs = 1; p = resources; start = NULL; while (len > 0) { tag = *p++; len--; if (PNP_RES_TYPE(tag) == 0) { /* Small resource */ l = PNP_SRES_LEN(tag); if (len < l) { len = 0; continue; } len -= l; switch (PNP_SRES_NUM(tag)) { case PNP_TAG_START_DEPENDANT: 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 dependent configs (%d)\n", MAXDEP); len = 0; break; } config = &configs[ncfgs]; /* * If the priority is not specified, * then use the default of 'acceptable' */ 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 (start == NULL) { device_printf(parent, "malformed resources\n"); len = 0; break; } /* * 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 dependent. */ config = &configs[0]; bzero(config, sizeof(*config)); break; case PNP_TAG_END: if (start != NULL) { device_printf(parent, "malformed resources\n"); } len = 0; break; default: 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 (len < 2) { len = 0; break; } l = I16(p); p += 2; len -= 2; if (len < l) { len = 0; break; } len -= l; if (start == NULL && pnp_parse_desc(dev, tag, p, l, config, ldn)) { len = 0; break; } p += l; } } if (ncfgs == 1) { /* Single config without dependants */ ISA_ADD_CONFIG(parent, dev, priorities[0], &configs[0]); free(configs, M_DEVBUF); return; } 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; }
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