From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- .../Xserver/hw/xfree86/os-support/linux/lnx_agp.c | 371 +++++++++++++++++++++ 1 file changed, 371 insertions(+) create mode 100644 nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_agp.c (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_agp.c') diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_agp.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_agp.c new file mode 100644 index 000000000..6a5c83db2 --- /dev/null +++ b/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_agp.c @@ -0,0 +1,371 @@ +/* + * Abstraction of the AGP GART interface. + * + * This version is for both Linux and FreeBSD. + * + * Copyright © 2000 VA Linux Systems, Inc. + * Copyright © 2001 The XFree86 Project, Inc. + */ + +/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/lnx_agp.c,v 3.11 2003/04/03 22:47:42 dawes Exp $ */ + +#ifdef HAVE_XORG_CONFIG_H +#include +#endif + +#include +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" +#include "xf86OSpriv.h" + +#if defined(linux) +#include +#include +#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) +#include +#include +#endif + +#ifndef AGP_DEVICE +#define AGP_DEVICE "/dev/agpgart" +#endif +/* AGP page size is independent of the host page size. */ +#ifndef AGP_PAGE_SIZE +#define AGP_PAGE_SIZE 4096 +#endif +#define AGPGART_MAJOR_VERSION 0 +#define AGPGART_MINOR_VERSION 99 + +static int gartFd = -1; +static int acquiredScreen = -1; +static Bool initDone = FALSE; +/* + * Close /dev/agpgart. This frees all associated memory allocated during + * this server generation. + */ +Bool +xf86GARTCloseScreen(int screenNum) +{ + if(gartFd != -1) { + close(gartFd); + acquiredScreen = -1; + gartFd = -1; + initDone = FALSE; + } + return TRUE; +} + +/* + * Open /dev/agpgart. Keep it open until xf86GARTCloseScreen is called. + */ +static Bool +GARTInit(int screenNum) +{ + struct _agp_info agpinf; + + if (initDone) + return (gartFd != -1); + + initDone = TRUE; + + if (gartFd == -1) + gartFd = open(AGP_DEVICE, O_RDWR, 0); + else + return FALSE; + + if (gartFd == -1) { + xf86DrvMsg(screenNum, X_ERROR, + "GARTInit: Unable to open " AGP_DEVICE " (%s)\n", + strerror(errno)); + return FALSE; + } + + xf86AcquireGART(-1); + /* Check the kernel driver version. */ + if (ioctl(gartFd, AGPIOC_INFO, &agpinf) != 0) { + xf86DrvMsg(screenNum, X_ERROR, + "GARTInit: AGPIOC_INFO failed (%s)\n", strerror(errno)); + close(gartFd); + gartFd = -1; + return FALSE; + } + xf86ReleaseGART(-1); + +#if defined(linux) + /* Per Dave Jones, every effort will be made to keep the + * agpgart interface backwards compatible, so allow all + * future versions. + */ + if ( +#if (AGPGART_MAJOR_VERSION > 0) /* quiet compiler */ + agpinf.version.major < AGPGART_MAJOR_VERSION || +#endif + (agpinf.version.major == AGPGART_MAJOR_VERSION && + agpinf.version.minor < AGPGART_MINOR_VERSION)) { + xf86DrvMsg(screenNum, X_ERROR, + "GARTInit: Kernel agpgart driver version is not current" + " (%d.%d vs %d.%d)\n", + agpinf.version.major, agpinf.version.minor, + AGPGART_MAJOR_VERSION, AGPGART_MINOR_VERSION); + close(gartFd); + gartFd = -1; + return FALSE; + } +#endif + + return TRUE; +} + +Bool +xf86AgpGARTSupported() +{ + return GARTInit(-1); +} + +AgpInfoPtr +xf86GetAGPInfo(int screenNum) +{ + struct _agp_info agpinf; + AgpInfoPtr info; + + if (!GARTInit(screenNum)) + return NULL; + + + if ((info = xcalloc(sizeof(AgpInfo), 1)) == NULL) { + xf86DrvMsg(screenNum, X_ERROR, + "xf86GetAGPInfo: Failed to allocate AgpInfo\n"); + return NULL; + } + + memset((char*)&agpinf, 0, sizeof(agpinf)); + + if (ioctl(gartFd, AGPIOC_INFO, &agpinf) != 0) { + xf86DrvMsg(screenNum, X_ERROR, + "xf86GetAGPInfo: AGPIOC_INFO failed (%s)\n", + strerror(errno)); + return NULL; + } + + info->bridgeId = agpinf.bridge_id; + info->agpMode = agpinf.agp_mode; + info->base = agpinf.aper_base; + info->size = agpinf.aper_size; + info->totalPages = agpinf.pg_total; + info->systemPages = agpinf.pg_system; + info->usedPages = agpinf.pg_used; + + xf86DrvMsg(screenNum, X_INFO, "Kernel reported %d total, %d used\n", agpinf.pg_total, agpinf.pg_used); + + return info; +} + +/* + * XXX If multiple screens can acquire the GART, should we have a reference + * count instead of using acquiredScreen? + */ + +Bool +xf86AcquireGART(int screenNum) +{ + if (screenNum != -1 && !GARTInit(screenNum)) + return FALSE; + + if (screenNum == -1 || acquiredScreen != screenNum) { + if (ioctl(gartFd, AGPIOC_ACQUIRE, 0) != 0) { + xf86DrvMsg(screenNum, X_WARNING, + "xf86AcquireGART: AGPIOC_ACQUIRE failed (%s)\n", + strerror(errno)); + return FALSE; + } + acquiredScreen = screenNum; + } + return TRUE; +} + +Bool +xf86ReleaseGART(int screenNum) +{ + if (screenNum != -1 && !GARTInit(screenNum)) + return FALSE; + + if (acquiredScreen == screenNum) { + /* + * The FreeBSD agp driver removes allocations on release. + * The Linux driver doesn't. xf86ReleaseGART() is expected + * to give up access to the GART, but not to remove any + * allocations. + */ +#if !defined(linux) + if (screenNum == -1) +#endif + { + if (ioctl(gartFd, AGPIOC_RELEASE, 0) != 0) { + xf86DrvMsg(screenNum, X_WARNING, + "xf86ReleaseGART: AGPIOC_RELEASE failed (%s)\n", + strerror(errno)); + return FALSE; + } + acquiredScreen = -1; + } + return TRUE; + } + return FALSE; +} + +int +xf86AllocateGARTMemory(int screenNum, unsigned long size, int type, + unsigned long *physical) +{ + struct _agp_allocate alloc; + int pages; + + /* + * Allocates "size" bytes of GART memory (rounds up to the next + * page multiple) or type "type". A handle (key) for the allocated + * memory is returned. On error, the return value is -1. + */ + + if (!GARTInit(screenNum) || acquiredScreen != screenNum) + return -1; + + pages = (size / AGP_PAGE_SIZE); + if (size % AGP_PAGE_SIZE != 0) + pages++; + + /* XXX check for pages == 0? */ + + alloc.pg_count = pages; + alloc.type = type; + + if (ioctl(gartFd, AGPIOC_ALLOCATE, &alloc) != 0) { + xf86DrvMsg(screenNum, X_WARNING, "xf86AllocateGARTMemory: " + "allocation of %d pages failed\n\t(%s)\n", pages, + strerror(errno)); + return -1; + } + + if (physical) + *physical = alloc.physical; + + return alloc.key; +} + +Bool +xf86DeallocateGARTMemory(int screenNum, int key) +{ + if (!GARTInit(screenNum) || acquiredScreen != screenNum) + return FALSE; + + if (acquiredScreen != screenNum) { + xf86DrvMsg(screenNum, X_ERROR, + "xf86UnbindGARTMemory: AGP not acquired by this screen\n"); + return FALSE; + } + + if (ioctl(gartFd, AGPIOC_DEALLOCATE, (int *)key) != 0) { + xf86DrvMsg(screenNum, X_WARNING,"xf86DeAllocateGARTMemory: " + "deallocation gart memory with key %d failed\n\t(%s)\n", + key, strerror(errno)); + return FALSE; + } + + return TRUE; +} + +/* Bind GART memory with "key" at "offset" */ +Bool +xf86BindGARTMemory(int screenNum, int key, unsigned long offset) +{ + struct _agp_bind bind; + int pageOffset; + + if (!GARTInit(screenNum) || acquiredScreen != screenNum) + return FALSE; + + if (acquiredScreen != screenNum) { + xf86DrvMsg(screenNum, X_ERROR, + "xf86BindGARTMemory: AGP not acquired by this screen\n"); + return FALSE; + } + + if (offset % AGP_PAGE_SIZE != 0) { + xf86DrvMsg(screenNum, X_WARNING, "xf86BindGARTMemory: " + "offset (0x%lx) is not page-aligned (%d)\n", + offset, AGP_PAGE_SIZE); + return FALSE; + } + pageOffset = offset / AGP_PAGE_SIZE; + + xf86DrvMsgVerb(screenNum, X_INFO, 3, + "xf86BindGARTMemory: bind key %d at 0x%08lx " + "(pgoffset %d)\n", key, offset, pageOffset); + + bind.pg_start = pageOffset; + bind.key = key; + + if (ioctl(gartFd, AGPIOC_BIND, &bind) != 0) { + xf86DrvMsg(screenNum, X_WARNING, "xf86BindGARTMemory: " + "binding of gart memory with key %d\n" + "\tat offset 0x%lx failed (%s)\n", + key, offset, strerror(errno)); + return FALSE; + } + + return TRUE; +} + + +/* Unbind GART memory with "key" */ +Bool +xf86UnbindGARTMemory(int screenNum, int key) +{ + struct _agp_unbind unbind; + + if (!GARTInit(screenNum) || acquiredScreen != screenNum) + return FALSE; + + if (acquiredScreen != screenNum) { + xf86DrvMsg(screenNum, X_ERROR, + "xf86UnbindGARTMemory: AGP not acquired by this screen\n"); + return FALSE; + } + + unbind.priority = 0; + unbind.key = key; + + if (ioctl(gartFd, AGPIOC_UNBIND, &unbind) != 0) { + xf86DrvMsg(screenNum, X_WARNING, "xf86UnbindGARTMemory: " + "unbinding of gart memory with key %d " + "failed (%s)\n", key, strerror(errno)); + return FALSE; + } + + xf86DrvMsgVerb(screenNum, X_INFO, 3, + "xf86UnbindGARTMemory: unbind key %d\n", key); + + return TRUE; +} + + +/* XXX Interface may change. */ +Bool +xf86EnableAGP(int screenNum, CARD32 mode) +{ + agp_setup setup; + + if (!GARTInit(screenNum) || acquiredScreen != screenNum) + return FALSE; + + setup.agp_mode = mode; + if (ioctl(gartFd, AGPIOC_SETUP, &setup) != 0) { + xf86DrvMsg(screenNum, X_WARNING, "xf86EnableAGP: " + "AGPIOC_SETUP with mode %ld failed (%s)\n", + (unsigned long)mode, strerror(errno)); + return FALSE; + } + + return TRUE; +} + -- cgit v1.2.3