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Diffstat (limited to 'src/atibus.c')
| -rw-r--r-- | src/atibus.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/atibus.c b/src/atibus.c new file mode 100644 index 0000000..c06c696 --- /dev/null +++ b/src/atibus.c @@ -0,0 +1,183 @@ +/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atibus.c,v 1.18 2003/01/22 21:44:10 tsi Exp $ */ +/* + * Copyright 1997 through 2003 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of Marc Aurele La France not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. Marc Aurele La France makes no representations + * about the suitability of this software for any purpose. It is provided + * "as-is" without express or implied warranty. + * + * MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO + * EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +#include "ati.h" +#include "atiadapter.h" +#include "atibus.h" +#include "atichip.h" +#include "atiio.h" +#include "atistruct.h" +#include "ativersion.h" + +/* + * Definitions related to an adapter's system bus interface. + */ + +const char *ATIBusNames[] = +{ + "16-Bit ISA", + "EISA", + "16-Bit MicroChannel", + "32-Bit MicroChannel", + "386SX Local Bus", + "386DX Local Bus", + "VESA Local Bus", + "PCI", + "AGP" +}; + +/* + * ATIClaimResources -- + * + * This function registers most of the bus resources used by an adapter. The + * exceptions are PCI-configured resources and non-PCI non-AGP linear + * apertures, both of which are registered by ATIPreInit(). This function also + * attempts to register unshareable resources for inactive PCI adapters, + * whether or not they are relocatable. + */ +static void +ATIClaimResources +( + ATIPtr pATI, + Bool Active +) +{ + resPtr pResources; + +#ifndef AVOID_CPIO + + resRange Resources[2] = {{0, 0, 0}, _END}; + + /* Claim VGA and VGAWonder resources */ + if ((pATI->VGAAdapter != ATI_ADAPTER_NONE) && (Active || !pATI->SharedVGA)) + { + /* + * 18800-x's are the only ATI controllers that decode all ISA aliases + * of VGA and VGA Wonder I/O ports. Other x8800's do not decode >any< + * VGA aliases, but do decode VGA Wonder aliases whose most significant + * nibble is zero. + */ + xf86ClaimFixedResources( + (pATI->Chip <= ATI_CHIP_18800_1) ? + (pATI->SharedVGA ? resVgaSparseShared : resVgaSparseExclusive) : + (pATI->SharedVGA ? resVgaShared : resVgaExclusive), + pATI->iEntity); + + if (pATI->CPIO_VGAWonder) + { + if (pATI->SharedVGA) + Resources[0].type = ResShrIoSparse | ResBus; + else + Resources[0].type = ResExcIoSparse | ResBus; + Resources[0].rBase = pATI->CPIO_VGAWonder; + if (pATI->Chip <= ATI_CHIP_18800_1) + Resources[0].rMask = 0x03FEU; + else + Resources[0].rMask = 0xF3FEU; + + xf86ClaimFixedResources(Resources, pATI->iEntity); + + (void)memcpy(pATI->VGAWonderResources, + Resources, SizeOf(Resources)); + } + } + + if (!Active && pATI->SharedAccelerator) + return; + + /* Claim 8514/A resources */ + if (pATI->ChipHasSUBSYS_CNTL) + xf86ClaimFixedResources( + pATI->SharedAccelerator ? res8514Shared : res8514Exclusive, + pATI->iEntity); + + /* Claim Mach64 sparse I/O resources */ + if ((pATI->Adapter == ATI_ADAPTER_MACH64) && + (pATI->CPIODecoding == SPARSE_IO)) + { + if (pATI->SharedAccelerator) + Resources[0].type = ResShrIoSparse | ResBus; + else + Resources[0].type = ResExcIoSparse | ResBus; + Resources[0].rBase = pATI->CPIOBase; + Resources[0].rMask = 0x03FCU; + + xf86ClaimFixedResources(Resources, pATI->iEntity); + } + + if (Active) + return; + +#else /* AVOID_CPIO */ + + if (pATI->SharedAccelerator) + return; + +#endif /* AVOID_CPIO */ + + /* Register unshared relocatable resources for inactive adapters */ + do + { + pResources = xf86RegisterResources(pATI->iEntity, NULL, ResExclusive); + if (!pResources) + return; + + pResources = xf86ReallocatePciResources(pATI->iEntity, pResources); + } while (!pResources); + + xf86Msg(X_WARNING, + ATI_NAME ": Unable to register the following resources for inactive" + " adapter:\n"); + xf86PrintResList(1, pResources); + xf86FreeResList(pResources); +} + +/* + * ATIClaimBusSlot -- + * + * Claim an adapter and register its resources. + */ +int +ATIClaimBusSlot +( + DriverPtr pDriver, + int Chipset, + GDevPtr pGDev, + Bool Active, + ATIPtr pATI +) +{ + pciVideoPtr pVideo = pATI->PCIInfo; + + if (pVideo) + pATI->iEntity = + xf86ClaimPciSlot(pVideo->bus, pVideo->device, pVideo->func, + pDriver, Chipset, pGDev, Active); + else + pATI->iEntity = xf86ClaimIsaSlot(pDriver, Chipset, pGDev, Active); + + if (pATI->iEntity >= 0) + ATIClaimResources(pATI, Active); + + return pATI->iEntity; +} |