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Diffstat (limited to 'xorg-server/hw/xfree86/int10/xf86int10.c')
-rw-r--r--xorg-server/hw/xfree86/int10/xf86int10.c851
1 files changed, 851 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/int10/xf86int10.c b/xorg-server/hw/xfree86/int10/xf86int10.c
new file mode 100644
index 000000000..f50607cfc
--- /dev/null
+++ b/xorg-server/hw/xfree86/int10/xf86int10.c
@@ -0,0 +1,851 @@
+/*
+ * XFree86 int10 module
+ * execute BIOS int 10h calls in x86 real mode environment
+ * Copyright 1999 Egbert Eich
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "xf86.h"
+#include "compiler.h"
+#define _INT10_PRIVATE
+#include "xf86int10.h"
+#include "int10Defines.h"
+#include "Pci.h"
+
+#define REG pInt
+
+xf86Int10InfoPtr Int10Current = NULL;
+
+static int int1A_handler(xf86Int10InfoPtr pInt);
+#ifndef _PC
+static int int42_handler(xf86Int10InfoPtr pInt);
+#endif
+static int intE6_handler(xf86Int10InfoPtr pInt);
+static struct pci_device *findPci(xf86Int10InfoPtr pInt, unsigned short bx);
+static CARD32 pciSlotBX( const struct pci_device * pvp );
+
+int
+int_handler(xf86Int10InfoPtr pInt)
+{
+ int num = pInt->num;
+ int ret = 0;
+
+ switch (num) {
+#ifndef _PC
+ case 0x10:
+ case 0x42:
+ case 0x6D:
+ if (getIntVect(pInt, num) == I_S_DEFAULT_INT_VECT)
+ ret = int42_handler(pInt);
+ break;
+#endif
+ case 0x1A:
+ ret = int1A_handler(pInt);
+ break;
+ case 0xe6:
+ ret = intE6_handler(pInt);
+ break;
+ default:
+ break;
+ }
+
+ if (!ret)
+ ret = run_bios_int(num, pInt);
+
+ if (!ret) {
+ xf86DrvMsg(pInt->scrnIndex, X_ERROR,
+ "Halting on int 0x%2.2x!\n", num);
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+
+ return ret;
+}
+
+#ifndef _PC
+/*
+ * This is derived from a number of PC system BIOS'es. The intent here is to
+ * provide very primitive video support, before an EGA/VGA BIOS installs its
+ * own interrupt vector. Here, "Ignored" calls should remain so. "Not
+ * Implemented" denotes functionality that can be implemented should the need
+ * arise. What are "Not Implemented" throughout are video memory accesses.
+ * Also, very little input validity checking is done here.
+ */
+static int
+int42_handler(xf86Int10InfoPtr pInt)
+{
+ switch (X86_AH) {
+ case 0x00:
+ /* Set Video Mode */
+ /* Enter: AL = video mode number */
+ /* Leave: Nothing */
+ /* Implemented (except for clearing the screen) */
+ { /* Localise */
+ IOADDRESS ioport;
+ int i;
+ CARD16 int1d, regvals, tmp;
+ CARD8 mode, cgamode, cgacolour;
+
+ /*
+ * Ignore all mode numbers but 0x00-0x13. Some systems also ignore
+ * 0x0B and 0x0C, but don't do that here.
+ */
+ if (X86_AL > 0x13)
+ break;
+
+ /*
+ * You didn't think that was really the mode set, did you? There
+ * are only so many slots in the video parameter table...
+ */
+ mode = X86_AL;
+ ioport = 0x03D4;
+ switch (MEM_RB(pInt, 0x0410) & 0x30) {
+ case 0x30: /* MDA */
+ mode = 0x07; /* Force mode to 0x07 */
+ ioport = 0x03B4;
+ break;
+ case 0x10: /* CGA 40x25 */
+ if (mode >= 0x07)
+ mode = 0x01;
+ break;
+ case 0x20: /* CGA 80x25 (MCGA?) */
+ if (mode >= 0x07)
+ mode = 0x03;
+ break;
+ case 0x00: /* EGA/VGA */
+ if (mode >= 0x07) /* Don't try MDA timings */
+ mode = 0x01; /* !?!?! */
+ break;
+ }
+
+ /* Locate data in video parameter table */
+ int1d = MEM_RW(pInt, 0x1d << 2);
+ regvals = ((mode >> 1) << 4) + int1d;
+ cgacolour = 0x30;
+ if (mode == 0x06) {
+ regvals -= 0x10;
+ cgacolour = 0x3F;
+ }
+
+ /** Update BIOS Data Area **/
+
+ /* Video mode */
+ MEM_WB(pInt, 0x0449, mode);
+
+ /* Columns */
+ tmp = MEM_RB(pInt, mode + int1d + 0x48);
+ MEM_WW(pInt, 0x044A, tmp);
+
+ /* Page length */
+ tmp = MEM_RW(pInt, (mode & 0x06) + int1d + 0x40);
+ MEM_WW(pInt, 0x044C, tmp);
+
+ /* Start Address */
+ MEM_WW(pInt, 0x044E, 0);
+
+ /* Cursor positions, one for each display page */
+ for (i = 0x0450; i < 0x0460; i += 2)
+ MEM_WW(pInt, i, 0);
+
+ /* Cursor start & end scanlines */
+ tmp = MEM_RB(pInt, regvals + 0x0B);
+ MEM_WB(pInt, 0x0460, tmp);
+ tmp = MEM_RB(pInt, regvals + 0x0A);
+ MEM_WB(pInt, 0x0461, tmp);
+
+ /* Current display page number */
+ MEM_WB(pInt, 0x0462, 0);
+
+ /* CRTC I/O address */
+ MEM_WW(pInt, 0x0463, ioport);
+
+ /* CGA Mode register value */
+ cgamode = MEM_RB(pInt, mode + int1d + 0x50);
+ MEM_WB(pInt, 0x0465, cgamode);
+
+ /* CGA Colour register value */
+ MEM_WB(pInt, 0x0466, cgacolour);
+
+ /* Rows */
+ MEM_WB(pInt, 0x0484, (25 - 1));
+
+ /* Remap I/O port number into its domain */
+ ioport += pInt->ioBase;
+
+ /* Programme the mode */
+ outb(ioport + 4, cgamode & 0x37); /* Turn off screen */
+ for (i = 0; i < 0x10; i++) {
+ tmp = MEM_RB(pInt, regvals + i);
+ outb(ioport, i);
+ outb(ioport + 1, tmp);
+ }
+ outb(ioport + 5, cgacolour); /* Select colour mode */
+ outb(ioport + 4, cgamode); /* Turn on screen */
+ }
+ break;
+
+ case 0x01:
+ /* Set Cursor Type */
+ /* Enter: CH = starting line for cursor */
+ /* CL = ending line for cursor */
+ /* Leave: Nothing */
+ /* Implemented */
+ { /* Localise */
+ IOADDRESS ioport = MEM_RW(pInt, 0x0463) + pInt->ioBase;
+
+ MEM_WB(pInt, 0x0460, X86_CL);
+ MEM_WB(pInt, 0x0461, X86_CH);
+
+ outb(ioport, 0x0A);
+ outb(ioport + 1, X86_CH);
+ outb(ioport, 0x0B);
+ outb(ioport + 1, X86_CL);
+ }
+ break;
+
+ case 0x02:
+ /* Set Cursor Position */
+ /* Enter: BH = display page number */
+ /* DH = row */
+ /* DL = column */
+ /* Leave: Nothing */
+ /* Implemented */
+ { /* Localise */
+ IOADDRESS ioport;
+ CARD16 offset;
+
+ MEM_WB(pInt, (X86_BH << 1) + 0x0450, X86_DL);
+ MEM_WB(pInt, (X86_BH << 1) + 0x0451, X86_DH);
+
+ if (X86_BH != MEM_RB(pInt, 0x0462))
+ break;
+
+ offset = (X86_DH * MEM_RW(pInt, 0x044A)) + X86_DL;
+ offset += MEM_RW(pInt, 0x044E) << 1;
+
+ ioport = MEM_RW(pInt, 0x0463) + pInt->ioBase;
+ outb(ioport, 0x0E);
+ outb(ioport + 1, offset >> 8);
+ outb(ioport, 0x0F);
+ outb(ioport + 1, offset & 0xFF);
+ }
+ break;
+
+ case 0x03:
+ /* Get Cursor Position */
+ /* Enter: BH = display page number */
+ /* Leave: CH = starting line for cursor */
+ /* CL = ending line for cursor */
+ /* DH = row */
+ /* DL = column */
+ /* Implemented */
+ { /* Localise */
+ X86_CL = MEM_RB(pInt, 0x0460);
+ X86_CH = MEM_RB(pInt, 0x0461);
+ X86_DL = MEM_RB(pInt, (X86_BH << 1) + 0x0450);
+ X86_DH = MEM_RB(pInt, (X86_BH << 1) + 0x0451);
+ }
+ break;
+
+ case 0x04:
+ /* Get Light Pen Position */
+ /* Enter: Nothing */
+ /* Leave: AH = 0x01 (down/triggered) or 0x00 (not) */
+ /* BX = pixel column */
+ /* CX = pixel row */
+ /* DH = character row */
+ /* DL = character column */
+ /* Not Implemented */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x04) -- Get Light Pen Position\n", pInt->num);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ X86_AH = X86_BX = X86_CX = X86_DX = 0;
+ }
+ break;
+
+ case 0x05:
+ /* Set Display Page */
+ /* Enter: AL = display page number */
+ /* Leave: Nothing */
+ /* Implemented */
+ { /* Localise */
+ IOADDRESS ioport = MEM_RW(pInt, 0x0463) + pInt->ioBase;
+ CARD16 start;
+ CARD8 x, y;
+
+ /* Calculate new start address */
+ MEM_WB(pInt, 0x0462, X86_AL);
+ start = X86_AL * MEM_RW(pInt, 0x044C);
+ MEM_WW(pInt, 0x044E, start);
+ start <<= 1;
+
+ /* Update start address */
+ outb(ioport, 0x0C);
+ outb(ioport + 1, start >> 8);
+ outb(ioport, 0x0D);
+ outb(ioport + 1, start & 0xFF);
+
+ /* Switch cursor position */
+ y = MEM_RB(pInt, (X86_AL << 1) + 0x0450);
+ x = MEM_RB(pInt, (X86_AL << 1) + 0x0451);
+ start += (y * MEM_RW(pInt, 0x044A)) + x;
+
+ /* Update cursor position */
+ outb(ioport, 0x0E);
+ outb(ioport + 1, start >> 8);
+ outb(ioport, 0x0F);
+ outb(ioport + 1, start & 0xFF);
+ }
+ break;
+
+ case 0x06:
+ /* Initialise or Scroll Window Up */
+ /* Enter: AL = lines to scroll up */
+ /* BH = attribute for blank */
+ /* CH = upper y of window */
+ /* CL = left x of window */
+ /* DH = lower y of window */
+ /* DL = right x of window */
+ /* Leave: Nothing */
+ /* Not Implemented */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x06) -- Initialise or Scroll Window Up\n",
+ pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ " AL=0x%2.2x, BH=0x%2.2x,"
+ " CH=0x%2.2x, CL=0x%2.2x, DH=0x%2.2x, DL=0x%2.2x\n",
+ X86_AL, X86_BH, X86_CH, X86_CL, X86_DH, X86_DL);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ }
+ break;
+
+ case 0x07:
+ /* Initialise or Scroll Window Down */
+ /* Enter: AL = lines to scroll down */
+ /* BH = attribute for blank */
+ /* CH = upper y of window */
+ /* CL = left x of window */
+ /* DH = lower y of window */
+ /* DL = right x of window */
+ /* Leave: Nothing */
+ /* Not Implemented */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x07) -- Initialise or Scroll Window Down\n",
+ pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ " AL=0x%2.2x, BH=0x%2.2x,"
+ " CH=0x%2.2x, CL=0x%2.2x, DH=0x%2.2x, DL=0x%2.2x\n",
+ X86_AL, X86_BH, X86_CH, X86_CL, X86_DH, X86_DL);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ }
+ break;
+
+ case 0x08:
+ /* Read Character and Attribute at Cursor */
+ /* Enter: BH = display page number */
+ /* Leave: AH = attribute */
+ /* AL = character */
+ /* Not Implemented */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x08) -- Read Character and Attribute at"
+ " Cursor\n", pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ "BH=0x%2.2x\n", X86_BH);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ X86_AX = 0;
+ }
+ break;
+
+ case 0x09:
+ /* Write Character and Attribute at Cursor */
+ /* Enter: AL = character */
+ /* BH = display page number */
+ /* BL = attribute (text) or colour (graphics) */
+ /* CX = replication count */
+ /* Leave: Nothing */
+ /* Not Implemented */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x09) -- Write Character and Attribute at"
+ " Cursor\n", pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ "AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x\n",
+ X86_AL, X86_BH, X86_BL, X86_CX);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ }
+ break;
+
+ case 0x0a:
+ /* Write Character at Cursor */
+ /* Enter: AL = character */
+ /* BH = display page number */
+ /* BL = colour */
+ /* CX = replication count */
+ /* Leave: Nothing */
+ /* Not Implemented */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x0A) -- Write Character at Cursor\n",
+ pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ "AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x\n",
+ X86_AL, X86_BH, X86_BL, X86_CX);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ }
+ break;
+
+ case 0x0b:
+ /* Set Palette, Background or Border */
+ /* Enter: BH = 0x00 or 0x01 */
+ /* BL = colour or palette (respectively) */
+ /* Leave: Nothing */
+ /* Implemented */
+ { /* Localise */
+ IOADDRESS ioport = MEM_RW(pInt, 0x0463) + 5 + pInt->ioBase;
+ CARD8 cgacolour = MEM_RB(pInt, 0x0466);
+
+ if (X86_BH) {
+ cgacolour &= 0xDF;
+ cgacolour |= (X86_BL & 0x01) << 5;
+ } else {
+ cgacolour &= 0xE0;
+ cgacolour |= X86_BL & 0x1F;
+ }
+
+ MEM_WB(pInt, 0x0466, cgacolour);
+ outb(ioport, cgacolour);
+ }
+ break;
+
+ case 0x0c:
+ /* Write Graphics Pixel */
+ /* Enter: AL = pixel value */
+ /* BH = display page number */
+ /* CX = column */
+ /* DX = row */
+ /* Leave: Nothing */
+ /* Not Implemented */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x0C) -- Write Graphics Pixel\n", pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ "AL=0x%2.2x, BH=0x%2.2x, CX=0x%4.4x, DX=0x%4.4x\n",
+ X86_AL, X86_BH, X86_CX, X86_DX);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ }
+ break;
+
+ case 0x0d:
+ /* Read Graphics Pixel */
+ /* Enter: BH = display page number */
+ /* CX = column */
+ /* DX = row */
+ /* Leave: AL = pixel value */
+ /* Not Implemented */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x0D) -- Read Graphics Pixel\n", pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ "BH=0x%2.2x, CX=0x%4.4x, DX=0x%4.4x\n",
+ X86_BH, X86_CX, X86_DX);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ X86_AL = 0;
+ }
+ break;
+
+ case 0x0e:
+ /* Write Character in Teletype Mode */
+ /* Enter: AL = character */
+ /* BH = display page number */
+ /* BL = foreground colour */
+ /* Leave: Nothing */
+ /* Not Implemented */
+ /* WARNING: Emulation of BEL characters will require */
+ /* emulation of RTC and PC speaker I/O. */
+ /* Also, this recurses through int 0x10 */
+ /* which might or might not have been */
+ /* installed yet. */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x0E) -- Write Character in Teletype Mode\n",
+ pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ "AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x\n",
+ X86_AL, X86_BH, X86_BL);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ }
+ break;
+
+ case 0x0f:
+ /* Get Video Mode */
+ /* Enter: Nothing */
+ /* Leave: AH = number of columns */
+ /* AL = video mode number */
+ /* BH = display page number */
+ /* Implemented */
+ { /* Localise */
+ X86_AH = MEM_RW(pInt, 0x044A);
+ X86_AL = MEM_RB(pInt, 0x0449);
+ X86_BH = MEM_RB(pInt, 0x0462);
+ }
+ break;
+
+ case 0x10:
+ /* Colour Control (subfunction in AL) */
+ /* Enter: Various */
+ /* Leave: Various */
+ /* Ignored */
+ break;
+
+ case 0x11:
+ /* Font Control (subfunction in AL) */
+ /* Enter: Various */
+ /* Leave: Various */
+ /* Ignored */
+ break;
+
+ case 0x12:
+ /* Miscellaneous (subfunction in BL) */
+ /* Enter: Various */
+ /* Leave: Various */
+ /* Ignored. Previous code here optionally allowed */
+ /* the enabling and disabling of VGA, but no system */
+ /* BIOS I've come across actually implements it. */
+ break;
+
+ case 0x13:
+ /* Write String in Teletype Mode */
+ /* Enter: AL = write mode */
+ /* BL = attribute (if (AL & 0x02) == 0) */
+ /* CX = string length */
+ /* DH = row */
+ /* DL = column */
+ /* ES:BP = string segment:offset */
+ /* Leave: Nothing */
+ /* Not Implemented */
+ /* WARNING: Emulation of BEL characters will require */
+ /* emulation of RTC and PC speaker I/O. */
+ /* Also, this recurses through int 0x10 */
+ /* which might or might not have been */
+ /* installed yet. */
+ { /* Localise */
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x%2.2x(AH=0x13) -- Write String in Teletype Mode\n",
+ pInt->num);
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
+ "AL=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x,"
+ " DH=0x%2.2x, DL=0x%2.2x, ES:BP=0x%4.4x:0x%4.4x\n",
+ X86_AL, X86_BL, X86_CX, X86_DH, X86_DL, X86_ES, X86_BP);
+ if (xf86GetVerbosity() > 3) {
+ dump_registers(pInt);
+ stack_trace(pInt);
+ }
+ }
+ break;
+
+ default:
+ /* Various extensions */
+ /* Enter: Various */
+ /* Leave: Various */
+ /* Ignored */
+ break;
+ }
+
+ return 1;
+}
+#endif
+
+#define SUCCESSFUL 0x00
+#define DEVICE_NOT_FOUND 0x86
+#define BAD_REGISTER_NUMBER 0x87
+
+#ifdef SHOW_ALL_DEVICES
+/**
+ * These functions are meant to be used by the PCI BIOS emulation. Some
+ * BIOSes need to see if there are \b other chips of the same type around so
+ * by setting \c exclude one PCI device can be explicitely excluded, if
+ * required.
+ */
+static struct pci_device *
+do_find(const struct pci_id_match *m, char n, const struct pci_device * exclude)
+{
+ struct pci_device *dev;
+ struct pci_device_iterator *iter;
+
+ n++;
+
+ iter = pci_id_match_iterator_create(m);
+ while ((dev = pci_device_next(iter)) != NULL) {
+ if ((dev != exclude) && !(--n)) {
+ break;
+ }
+ }
+
+ pci_iterator_destroy(iter);
+
+ return dev;
+}
+
+
+static struct pci_device *
+find_pci_device_vendor(CARD16 vendorID, CARD16 deviceID,
+ char n, const struct pci_device * exclude)
+{
+ struct pci_id_match m;
+
+ m.vendor_id = vendorID;
+ m.device_id = deviceID;
+ m.subvendor_id = PCI_MATCH_ANY;
+ m.subdevice_id = PCI_MATCH_ANY;
+ m.device_class = 0;
+ m.device_class_mask = 0;
+
+ return do_find(& m, n, exclude);
+}
+
+static struct pci_device *
+find_pci_class(CARD8 intf, CARD8 subClass, CARD16 _class,
+ char n, const struct pci_device * exclude)
+{
+ struct pci_id_match m;
+
+ m.vendor_id = PCI_MATCH_ANY;
+ m.device_id = PCI_MATCH_ANY;
+ m.subvendor_id = PCI_MATCH_ANY;
+ m.subdevice_id = PCI_MATCH_ANY;
+ m.device_class = (((uint32_t)_class) << 16)
+ | (((uint32_t)subClass) << 8) | intf;
+ m.device_class_mask = 0x00ffffff;
+
+ return do_find(& m, n, exclude);
+}
+#endif
+
+static int
+int1A_handler(xf86Int10InfoPtr pInt)
+{
+ struct pci_device * const pvp = xf86GetPciInfoForEntity(pInt->entityIndex);
+ struct pci_device * dev;
+
+ if (pvp == NULL)
+ return 0; /* oops */
+
+#ifdef PRINT_INT
+ ErrorF("int 0x1a: ax=0x%x bx=0x%x cx=0x%x dx=0x%x di=0x%x es=0x%x\n",
+ X86_EAX, X86_EBX, X86_ECX, X86_EDX, X86_EDI, X86_ESI);
+#endif
+ switch (X86_AX) {
+ case 0xb101:
+ X86_EAX &= 0xFF00; /* no config space/special cycle support */
+ X86_EDX = 0x20494350; /* " ICP" */
+ X86_EBX = 0x0210; /* Version 2.10 */
+ X86_ECX &= 0xFF00;
+ X86_ECX |= (pciNumBuses & 0xFF); /* Max bus number in system */
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x dx=0x%x bx=0x%x cx=0x%x flags=0x%x\n",
+ X86_EAX, X86_EDX, X86_EBX, X86_ECX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb102:
+ if ( (X86_DX == pvp->vendor_id)
+ && (X86_CX == pvp->device_id)
+ && (X86_ESI == 0) ) {
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ X86_EBX = pciSlotBX(pvp);
+ }
+#ifdef SHOW_ALL_DEVICES
+ else
+ if ((dev = find_pci_device_vendor(X86_EDX, X86_ECX, X86_ESI, pvp))) {
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ X86_EBX = pciSlotBX(dev);
+ }
+#endif
+ else {
+ X86_EAX = X86_AL | (DEVICE_NOT_FOUND << 8);
+ X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
+ }
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x bx=0x%x flags=0x%x\n", X86_EAX, X86_EBX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb103:
+ if ( (X86_ECX & 0x00FFFFFF) == pvp->device_class ) {
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EBX = pciSlotBX(pvp);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ }
+#ifdef SHOW_ALL_DEVICES
+ else if ((dev = find_pci_class(X86_CL, X86_CH,
+ (X86_ECX & 0xffff0000) >> 16,
+ X86_ESI, pvp))) {
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ X86_EBX = pciSlotBX(dev);
+ }
+#endif
+ else {
+ X86_EAX = X86_AL | (DEVICE_NOT_FOUND << 8);
+ X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
+ }
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb108:
+ if ((dev = findPci(pInt, X86_EBX)) != NULL) {
+ pci_device_cfg_read_u8(dev, & X86_CL, X86_DI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
+ }
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb109:
+ if ((dev = findPci(pInt, X86_EBX)) != NULL) {
+ pci_device_cfg_read_u16(dev, & X86_CX, X86_DI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
+ }
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb10a:
+ if ((dev = findPci(pInt, X86_EBX)) != NULL) {
+ pci_device_cfg_read_u32(dev, & X86_ECX, X86_DI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
+ }
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb10b:
+ if ((dev = findPci(pInt, X86_EBX)) != NULL) {
+ pci_device_cfg_write_u8(dev, X86_CL, X86_DI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
+ }
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb10c:
+ if ((dev = findPci(pInt, X86_EBX)) != NULL) {
+ pci_device_cfg_write_u16(dev, X86_CX, X86_DI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
+ }
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb10d:
+ if ((dev = findPci(pInt, X86_EBX)) != NULL) {
+ pci_device_cfg_write_u32(dev, X86_ECX, X86_DI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
+ }
+#ifdef PRINT_INT
+ ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
+#endif
+ return 1;
+ default:
+ xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
+ "int 0x1a subfunction\n");
+ dump_registers(pInt);
+ if (xf86GetVerbosity() > 3)
+ stack_trace(pInt);
+ return 0;
+ }
+}
+
+static struct pci_device *
+findPci(xf86Int10InfoPtr pInt, unsigned short bx)
+{
+ const unsigned bus = (bx >> 8) & 0x00FF;
+ const unsigned dev = (bx >> 3) & 0x001F;
+ const unsigned func = (bx ) & 0x0007;
+
+ return pci_device_find_by_slot(pInt->dev->domain, bus, dev, func);
+}
+
+static CARD32
+pciSlotBX(const struct pci_device * pvp)
+{
+ return ((pvp->bus << 8) & 0x00FF00) | (pvp->dev << 3) | (pvp->func);
+}
+
+/*
+ * handle initialization
+ */
+static int
+intE6_handler(xf86Int10InfoPtr pInt)
+{
+ struct pci_device * pvp;
+
+ if ((pvp = xf86GetPciInfoForEntity(pInt->entityIndex)))
+ X86_AX = (pvp->bus << 8) | (pvp->dev << 3) | (pvp->func & 0x7);
+ pushw(pInt, X86_CS);
+ pushw(pInt, X86_IP);
+ X86_CS = pInt->BIOSseg;
+ X86_EIP = 0x0003;
+ X86_ES = 0; /* standard pc es */
+ return 1;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 16:40:57 +0000