2 * Copyright (c) 2009 Alex Keda <admin@lissyara.su>
3 * Copyright (c) 2009-2010 Jung-uk Kim <jkim@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include "opt_x86bios.h"
33 #include <sys/param.h>
35 #include <sys/kernel.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
39 #include <sys/mutex.h>
40 #include <sys/sysctl.h>
42 #include <contrib/x86emu/x86emu.h>
43 #include <contrib/x86emu/x86emu_regs.h>
44 #include <compat/x86bios/x86bios.h>
46 #include <dev/pci/pcireg.h>
47 #include <dev/pci/pcivar.h>
53 #define X86BIOS_NATIVE_ARCH
56 #define X86BIOS_NATIVE_VM86
59 #define X86BIOS_MEM_SIZE 0x00100000 /* 1M */
61 #define X86BIOS_TRACE(h, n, r) do { \
63 " (ax=0x%04x bx=0x%04x cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",\
64 (n), (r)->R_AX, (r)->R_BX, (r)->R_CX, (r)->R_DX, \
65 (r)->R_ES, (r)->R_DI); \
68 static struct mtx x86bios_lock;
70 SYSCTL_NODE(_debug, OID_AUTO, x86bios, CTLFLAG_RD, NULL, "x86bios debugging");
71 static int x86bios_trace_call;
72 TUNABLE_INT("debug.x86bios.call", &x86bios_trace_call);
73 SYSCTL_INT(_debug_x86bios, OID_AUTO, call, CTLFLAG_RW, &x86bios_trace_call, 0,
74 "Trace far function calls");
75 static int x86bios_trace_int;
76 TUNABLE_INT("debug.x86bios.int", &x86bios_trace_int);
77 SYSCTL_INT(_debug_x86bios, OID_AUTO, int, CTLFLAG_RW, &x86bios_trace_int, 0,
78 "Trace software interrupt handlers");
80 #ifdef X86BIOS_NATIVE_VM86
82 #include <machine/vm86.h>
83 #include <machine/vmparam.h>
84 #include <machine/pc/bios.h>
86 struct vm86context x86bios_vmc;
89 x86bios_emu2vmf(struct x86emu_regs *regs, struct vm86frame *vmf)
92 vmf->vmf_ds = regs->R_DS;
93 vmf->vmf_es = regs->R_ES;
94 vmf->vmf_ax = regs->R_AX;
95 vmf->vmf_bx = regs->R_BX;
96 vmf->vmf_cx = regs->R_CX;
97 vmf->vmf_dx = regs->R_DX;
98 vmf->vmf_bp = regs->R_BP;
99 vmf->vmf_si = regs->R_SI;
100 vmf->vmf_di = regs->R_DI;
104 x86bios_vmf2emu(struct vm86frame *vmf, struct x86emu_regs *regs)
107 regs->R_DS = vmf->vmf_ds;
108 regs->R_ES = vmf->vmf_es;
109 regs->R_FLG = vmf->vmf_flags;
110 regs->R_AX = vmf->vmf_ax;
111 regs->R_BX = vmf->vmf_bx;
112 regs->R_CX = vmf->vmf_cx;
113 regs->R_DX = vmf->vmf_dx;
114 regs->R_BP = vmf->vmf_bp;
115 regs->R_SI = vmf->vmf_si;
116 regs->R_DI = vmf->vmf_di;
120 x86bios_alloc(uint32_t *offset, size_t size, int flags)
125 if (offset == NULL || size == 0)
127 vaddr = contigmalloc(size, M_DEVBUF, flags, 0, X86BIOS_MEM_SIZE,
130 *offset = vtophys(vaddr);
131 mtx_lock(&x86bios_lock);
132 for (i = 0; i < atop(round_page(size)); i++)
133 vm86_addpage(&x86bios_vmc, atop(*offset) + i,
134 (vm_offset_t)vaddr + ptoa(i));
135 mtx_unlock(&x86bios_lock);
142 x86bios_free(void *addr, size_t size)
147 if (addr == NULL || size == 0)
149 paddr = vtophys(addr);
150 if (paddr >= X86BIOS_MEM_SIZE || (paddr & PAGE_MASK) != 0)
152 mtx_lock(&x86bios_lock);
153 for (i = 0; i < x86bios_vmc.npages; i++)
154 if (x86bios_vmc.pmap[i].kva == (vm_offset_t)addr)
156 if (i >= x86bios_vmc.npages) {
157 mtx_unlock(&x86bios_lock);
160 nfree = atop(round_page(size));
161 bzero(x86bios_vmc.pmap + i, sizeof(*x86bios_vmc.pmap) * nfree);
162 if (i + nfree == x86bios_vmc.npages) {
163 x86bios_vmc.npages -= nfree;
164 while (--i >= 0 && x86bios_vmc.pmap[i].kva == 0)
165 x86bios_vmc.npages--;
167 mtx_unlock(&x86bios_lock);
168 contigfree(addr, size, M_DEVBUF);
172 x86bios_init_regs(struct x86regs *regs)
175 bzero(regs, sizeof(*regs));
179 x86bios_call(struct x86regs *regs, uint16_t seg, uint16_t off)
181 struct vm86frame vmf;
183 if (x86bios_trace_call)
184 X86BIOS_TRACE(Calling 0x%06x, (seg << 4) + off, regs);
186 bzero(&vmf, sizeof(vmf));
187 x86bios_emu2vmf((struct x86emu_regs *)regs, &vmf);
190 mtx_lock(&x86bios_lock);
191 vm86_datacall(-1, &vmf, &x86bios_vmc);
192 mtx_unlock(&x86bios_lock);
193 x86bios_vmf2emu(&vmf, (struct x86emu_regs *)regs);
195 if (x86bios_trace_call)
196 X86BIOS_TRACE(Exiting 0x%06x, (seg << 4) + off, regs);
200 x86bios_get_intr(int intno)
203 return (readl(BIOS_PADDRTOVADDR(intno * 4)));
207 x86bios_set_intr(int intno, uint32_t saddr)
210 writel(BIOS_PADDRTOVADDR(intno * 4), saddr);
214 x86bios_intr(struct x86regs *regs, int intno)
216 struct vm86frame vmf;
218 if (x86bios_trace_int)
219 X86BIOS_TRACE(Calling INT 0x%02x, intno, regs);
221 bzero(&vmf, sizeof(vmf));
222 x86bios_emu2vmf((struct x86emu_regs *)regs, &vmf);
223 mtx_lock(&x86bios_lock);
224 vm86_datacall(intno, &vmf, &x86bios_vmc);
225 mtx_unlock(&x86bios_lock);
226 x86bios_vmf2emu(&vmf, (struct x86emu_regs *)regs);
228 if (x86bios_trace_int)
229 X86BIOS_TRACE(Exiting INT 0x%02x, intno, regs);
233 x86bios_offset(uint32_t offset)
237 addr = vm86_getaddr(&x86bios_vmc, X86BIOS_PHYSTOSEG(offset),
238 X86BIOS_PHYSTOOFF(offset));
240 addr = BIOS_PADDRTOVADDR(offset);
242 return ((void *)addr);
249 mtx_init(&x86bios_lock, "x86bios lock", NULL, MTX_DEF);
250 bzero(&x86bios_vmc, sizeof(x86bios_vmc));
259 mtx_destroy(&x86bios_lock);
266 #include <machine/iodev.h>
268 #define X86BIOS_PAGE_SIZE 0x00001000 /* 4K */
270 #define X86BIOS_IVT_SIZE 0x00000500 /* 1K + 256 (BDA) */
272 #define X86BIOS_IVT_BASE 0x00000000
273 #define X86BIOS_RAM_BASE 0x00001000
274 #define X86BIOS_ROM_BASE 0x000a0000
276 #define X86BIOS_ROM_SIZE (X86BIOS_MEM_SIZE - x86bios_rom_phys)
277 #define X86BIOS_SEG_SIZE X86BIOS_PAGE_SIZE
279 #define X86BIOS_PAGES (X86BIOS_MEM_SIZE / X86BIOS_PAGE_SIZE)
281 #define X86BIOS_R_SS _pad2
282 #define X86BIOS_R_SP _pad3.I16_reg.x_reg
284 static struct x86emu x86bios_emu;
286 static void *x86bios_ivt;
287 static void *x86bios_rom;
288 static void *x86bios_seg;
290 static vm_offset_t *x86bios_map;
292 static vm_paddr_t x86bios_rom_phys;
293 static vm_paddr_t x86bios_seg_phys;
295 static int x86bios_fault;
296 static uint32_t x86bios_fault_addr;
297 static uint16_t x86bios_fault_cs;
298 static uint16_t x86bios_fault_ip;
301 x86bios_set_fault(struct x86emu *emu, uint32_t addr)
305 x86bios_fault_addr = addr;
306 x86bios_fault_cs = emu->x86.R_CS;
307 x86bios_fault_ip = emu->x86.R_IP;
308 x86emu_halt_sys(emu);
312 x86bios_get_pages(uint32_t offset, size_t size)
316 if (offset + size > X86BIOS_MEM_SIZE + X86BIOS_IVT_SIZE)
319 if (offset >= X86BIOS_MEM_SIZE)
320 offset -= X86BIOS_MEM_SIZE;
321 addr = x86bios_map[offset / X86BIOS_PAGE_SIZE];
323 addr += offset % X86BIOS_PAGE_SIZE;
325 return ((void *)addr);
329 x86bios_set_pages(vm_offset_t va, vm_paddr_t pa, size_t size)
333 for (i = pa / X86BIOS_PAGE_SIZE, j = 0;
334 j < howmany(size, X86BIOS_PAGE_SIZE); i++, j++)
335 x86bios_map[i] = va + j * X86BIOS_PAGE_SIZE;
339 x86bios_emu_rdb(struct x86emu *emu, uint32_t addr)
343 va = x86bios_get_pages(addr, sizeof(*va));
345 x86bios_set_fault(emu, addr);
351 x86bios_emu_rdw(struct x86emu *emu, uint32_t addr)
355 va = x86bios_get_pages(addr, sizeof(*va));
357 x86bios_set_fault(emu, addr);
359 #ifndef __NO_STRICT_ALIGNMENT
361 return (le16dec(va));
364 return (le16toh(*va));
368 x86bios_emu_rdl(struct x86emu *emu, uint32_t addr)
372 va = x86bios_get_pages(addr, sizeof(*va));
374 x86bios_set_fault(emu, addr);
376 #ifndef __NO_STRICT_ALIGNMENT
378 return (le32dec(va));
381 return (le32toh(*va));
385 x86bios_emu_wrb(struct x86emu *emu, uint32_t addr, uint8_t val)
389 va = x86bios_get_pages(addr, sizeof(*va));
391 x86bios_set_fault(emu, addr);
397 x86bios_emu_wrw(struct x86emu *emu, uint32_t addr, uint16_t val)
401 va = x86bios_get_pages(addr, sizeof(*va));
403 x86bios_set_fault(emu, addr);
405 #ifndef __NO_STRICT_ALIGNMENT
414 x86bios_emu_wrl(struct x86emu *emu, uint32_t addr, uint32_t val)
418 va = x86bios_get_pages(addr, sizeof(*va));
420 x86bios_set_fault(emu, addr);
422 #ifndef __NO_STRICT_ALIGNMENT
431 x86bios_emu_inb(struct x86emu *emu, uint16_t port)
434 #ifndef X86BIOS_NATIVE_ARCH
435 if (port == 0xb2) /* APM scratch register */
437 if (port >= 0x80 && port < 0x88) /* POST status register */
441 return (iodev_read_1(port));
445 x86bios_emu_inw(struct x86emu *emu, uint16_t port)
449 #ifndef X86BIOS_NATIVE_ARCH
450 if (port >= 0x80 && port < 0x88) /* POST status register */
453 if ((port & 1) != 0) {
454 val = iodev_read_1(port);
455 val |= iodev_read_1(port + 1) << 8;
458 val = iodev_read_2(port);
464 x86bios_emu_inl(struct x86emu *emu, uint16_t port)
468 #ifndef X86BIOS_NATIVE_ARCH
469 if (port >= 0x80 && port < 0x88) /* POST status register */
472 if ((port & 1) != 0) {
473 val = iodev_read_1(port);
474 val |= iodev_read_2(port + 1) << 8;
475 val |= iodev_read_1(port + 3) << 24;
476 } else if ((port & 2) != 0) {
477 val = iodev_read_2(port);
478 val |= iodev_read_2(port + 2) << 16;
481 val = iodev_read_4(port);
487 x86bios_emu_outb(struct x86emu *emu, uint16_t port, uint8_t val)
490 #ifndef X86BIOS_NATIVE_ARCH
491 if (port == 0xb2) /* APM scratch register */
493 if (port >= 0x80 && port < 0x88) /* POST status register */
497 iodev_write_1(port, val);
501 x86bios_emu_outw(struct x86emu *emu, uint16_t port, uint16_t val)
504 #ifndef X86BIOS_NATIVE_ARCH
505 if (port >= 0x80 && port < 0x88) /* POST status register */
508 if ((port & 1) != 0) {
509 iodev_write_1(port, val);
510 iodev_write_1(port + 1, val >> 8);
513 iodev_write_2(port, val);
517 x86bios_emu_outl(struct x86emu *emu, uint16_t port, uint32_t val)
520 #ifndef X86BIOS_NATIVE_ARCH
521 if (port >= 0x80 && port < 0x88) /* POST status register */
524 if ((port & 1) != 0) {
525 iodev_write_1(port, val);
526 iodev_write_2(port + 1, val >> 8);
527 iodev_write_1(port + 3, val >> 24);
528 } else if ((port & 2) != 0) {
529 iodev_write_2(port, val);
530 iodev_write_2(port + 2, val >> 16);
533 iodev_write_4(port, val);
537 x86bios_alloc(uint32_t *offset, size_t size, int flags)
541 if (offset == NULL || size == 0)
543 vaddr = contigmalloc(size, M_DEVBUF, flags, X86BIOS_RAM_BASE,
544 x86bios_rom_phys, X86BIOS_PAGE_SIZE, 0);
546 *offset = vtophys(vaddr);
547 mtx_lock(&x86bios_lock);
548 x86bios_set_pages((vm_offset_t)vaddr, *offset, size);
549 mtx_unlock(&x86bios_lock);
556 x86bios_free(void *addr, size_t size)
560 if (addr == NULL || size == 0)
562 paddr = vtophys(addr);
563 if (paddr < X86BIOS_RAM_BASE || paddr >= x86bios_rom_phys ||
564 paddr % X86BIOS_PAGE_SIZE != 0)
566 mtx_lock(&x86bios_lock);
567 bzero(x86bios_map + paddr / X86BIOS_PAGE_SIZE,
568 sizeof(*x86bios_map) * howmany(size, X86BIOS_PAGE_SIZE));
569 mtx_unlock(&x86bios_lock);
570 contigfree(addr, size, M_DEVBUF);
574 x86bios_init_regs(struct x86regs *regs)
577 bzero(regs, sizeof(*regs));
578 regs->X86BIOS_R_SS = X86BIOS_PHYSTOSEG(x86bios_seg_phys);
579 regs->X86BIOS_R_SP = X86BIOS_PAGE_SIZE - 2;
583 x86bios_call(struct x86regs *regs, uint16_t seg, uint16_t off)
586 if (x86bios_trace_call)
587 X86BIOS_TRACE(Calling 0x%06x, (seg << 4) + off, regs);
589 mtx_lock(&x86bios_lock);
590 memcpy(&x86bios_emu.x86, regs, sizeof(*regs));
593 x86emu_exec_call(&x86bios_emu, seg, off);
595 memcpy(regs, &x86bios_emu.x86, sizeof(*regs));
596 mtx_unlock(&x86bios_lock);
598 if (x86bios_trace_call) {
599 X86BIOS_TRACE(Exiting 0x%06x, (seg << 4) + off, regs);
601 printf("Page fault at 0x%06x from 0x%04x:0x%04x.\n",
602 x86bios_fault_addr, x86bios_fault_cs,
608 x86bios_get_intr(int intno)
611 return (le32toh(*((uint32_t *)x86bios_ivt + intno)));
615 x86bios_set_intr(int intno, uint32_t saddr)
618 *((uint32_t *)x86bios_ivt + intno) = htole32(saddr);
622 x86bios_intr(struct x86regs *regs, int intno)
625 if (intno < 0 || intno > 255)
628 if (x86bios_trace_int)
629 X86BIOS_TRACE(Calling INT 0x%02x, intno, regs);
631 mtx_lock(&x86bios_lock);
632 memcpy(&x86bios_emu.x86, regs, sizeof(*regs));
635 x86emu_exec_intr(&x86bios_emu, intno);
637 memcpy(regs, &x86bios_emu.x86, sizeof(*regs));
638 mtx_unlock(&x86bios_lock);
640 if (x86bios_trace_int) {
641 X86BIOS_TRACE(Exiting INT 0x%02x, intno, regs);
643 printf("Page fault at 0x%06x from 0x%04x:0x%04x.\n",
644 x86bios_fault_addr, x86bios_fault_cs,
650 x86bios_offset(uint32_t offset)
653 return (x86bios_get_pages(offset, 1));
657 x86bios_unmap_mem(void)
660 free(x86bios_map, M_DEVBUF);
661 if (x86bios_ivt != NULL)
662 #ifdef X86BIOS_NATIVE_ARCH
663 pmap_unmapbios((vm_offset_t)x86bios_ivt, X86BIOS_IVT_SIZE);
665 free(x86bios_ivt, M_DEVBUF);
667 if (x86bios_rom != NULL)
668 pmap_unmapdev((vm_offset_t)x86bios_rom, X86BIOS_ROM_SIZE);
669 if (x86bios_seg != NULL)
670 contigfree(x86bios_seg, X86BIOS_SEG_SIZE, M_DEVBUF);
674 x86bios_map_mem(void)
677 x86bios_map = malloc(sizeof(*x86bios_map) * X86BIOS_PAGES, M_DEVBUF,
680 #ifdef X86BIOS_NATIVE_ARCH
681 x86bios_ivt = pmap_mapbios(X86BIOS_IVT_BASE, X86BIOS_IVT_SIZE);
683 /* Probe EBDA via BDA. */
684 x86bios_rom_phys = *(uint16_t *)((caddr_t)x86bios_ivt + 0x40e);
685 x86bios_rom_phys = x86bios_rom_phys << 4;
686 if (x86bios_rom_phys != 0 && x86bios_rom_phys < X86BIOS_ROM_BASE &&
687 X86BIOS_ROM_BASE - x86bios_rom_phys <= 128 * 1024)
689 rounddown(x86bios_rom_phys, X86BIOS_PAGE_SIZE);
692 x86bios_ivt = malloc(X86BIOS_IVT_SIZE, M_DEVBUF, M_ZERO | M_WAITOK);
695 x86bios_rom_phys = X86BIOS_ROM_BASE;
696 x86bios_rom = pmap_mapdev(x86bios_rom_phys, X86BIOS_ROM_SIZE);
697 if (x86bios_rom == NULL)
699 #ifdef X86BIOS_NATIVE_ARCH
700 /* Change attribute for EBDA. */
701 if (x86bios_rom_phys < X86BIOS_ROM_BASE &&
702 pmap_change_attr((vm_offset_t)x86bios_rom,
703 X86BIOS_ROM_BASE - x86bios_rom_phys, PAT_WRITE_BACK) != 0)
707 x86bios_seg = contigmalloc(X86BIOS_SEG_SIZE, M_DEVBUF, M_WAITOK,
708 X86BIOS_RAM_BASE, x86bios_rom_phys, X86BIOS_PAGE_SIZE, 0);
709 x86bios_seg_phys = vtophys(x86bios_seg);
711 x86bios_set_pages((vm_offset_t)x86bios_ivt, X86BIOS_IVT_BASE,
713 x86bios_set_pages((vm_offset_t)x86bios_rom, x86bios_rom_phys,
715 x86bios_set_pages((vm_offset_t)x86bios_seg, x86bios_seg_phys,
719 printf("x86bios: IVT 0x%06jx-0x%06jx at %p\n",
720 (vm_paddr_t)X86BIOS_IVT_BASE,
721 (vm_paddr_t)X86BIOS_IVT_SIZE + X86BIOS_IVT_BASE - 1,
723 printf("x86bios: SSEG 0x%06jx-0x%06jx at %p\n",
725 (vm_paddr_t)X86BIOS_SEG_SIZE + x86bios_seg_phys - 1,
727 if (x86bios_rom_phys < X86BIOS_ROM_BASE)
728 printf("x86bios: EBDA 0x%06jx-0x%06jx at %p\n",
729 x86bios_rom_phys, (vm_paddr_t)X86BIOS_ROM_BASE - 1,
731 printf("x86bios: ROM 0x%06jx-0x%06jx at %p\n",
732 (vm_paddr_t)X86BIOS_ROM_BASE,
733 (vm_paddr_t)X86BIOS_MEM_SIZE - X86BIOS_SEG_SIZE - 1,
734 (caddr_t)x86bios_rom + X86BIOS_ROM_BASE - x86bios_rom_phys);
749 mtx_init(&x86bios_lock, "x86bios lock", NULL, MTX_DEF);
751 if (x86bios_map_mem() != 0)
754 bzero(&x86bios_emu, sizeof(x86bios_emu));
756 x86bios_emu.emu_rdb = x86bios_emu_rdb;
757 x86bios_emu.emu_rdw = x86bios_emu_rdw;
758 x86bios_emu.emu_rdl = x86bios_emu_rdl;
759 x86bios_emu.emu_wrb = x86bios_emu_wrb;
760 x86bios_emu.emu_wrw = x86bios_emu_wrw;
761 x86bios_emu.emu_wrl = x86bios_emu_wrl;
763 x86bios_emu.emu_inb = x86bios_emu_inb;
764 x86bios_emu.emu_inw = x86bios_emu_inw;
765 x86bios_emu.emu_inl = x86bios_emu_inl;
766 x86bios_emu.emu_outb = x86bios_emu_outb;
767 x86bios_emu.emu_outw = x86bios_emu_outw;
768 x86bios_emu.emu_outl = x86bios_emu_outl;
778 mtx_destroy(&x86bios_lock);
786 x86bios_get_orm(uint32_t offset)
790 /* Does the shadow ROM contain BIOS POST code for x86? */
791 p = x86bios_offset(offset);
792 if (p == NULL || p[0] != 0x55 || p[1] != 0xaa ||
793 (p[3] != 0xe9 && p[3] != 0xeb))
800 x86bios_match_device(uint32_t offset, device_t dev)
803 uint16_t device, vendor;
804 uint8_t class, progif, subclass;
806 /* Does the shadow ROM contain BIOS POST code for x86? */
807 p = x86bios_get_orm(offset);
811 /* Does it contain PCI data structure? */
812 p += le16toh(*(uint16_t *)(p + 0x18));
813 if (bcmp(p, "PCIR", 4) != 0 ||
814 le16toh(*(uint16_t *)(p + 0x0a)) < 0x18 || *(p + 0x14) != 0)
817 /* Does it match the vendor, device, and classcode? */
818 vendor = le16toh(*(uint16_t *)(p + 0x04));
819 device = le16toh(*(uint16_t *)(p + 0x06));
820 progif = *(p + 0x0d);
821 subclass = *(p + 0x0e);
823 if (vendor != pci_get_vendor(dev) || device != pci_get_device(dev) ||
824 class != pci_get_class(dev) || subclass != pci_get_subclass(dev) ||
825 progif != pci_get_progif(dev))
832 x86bios_modevent(module_t mod __unused, int type, void *data __unused)
837 return (x86bios_init());
839 return (x86bios_uninit());
845 static moduledata_t x86bios_mod = {
851 DECLARE_MODULE(x86bios, x86bios_mod, SI_SUB_CPU, SI_ORDER_ANY);
852 MODULE_VERSION(x86bios, 1);