added via accelerant, a copy of skeleton driver yet.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13595 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
parent
b97f7d33d2
commit
661c9ec849
216
src/add-ons/accelerants/via/engine/agp.c
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216
src/add-ons/accelerants/via/engine/agp.c
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/* Author:
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Rudolf Cornelissen 6/2004-9/2004
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*/
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#define MODULE_BIT 0x00000100
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#include <unistd.h>
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#include "std.h"
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static void eng_agp_list_info(agp_info ai);
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static void eng_agp_list_active(uint32 cmd);
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status_t eng_agp_setup(void)
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{
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eng_nth_agp_info nai;
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eng_cmd_agp nca;
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uint8 index;
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agp_info eng_ai;
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bool agp = false;
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/* first try to enable FW support on our card if user requested this
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* ('unsupported' tweak!)
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* This has no effect on PCI cards. */
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// if (si->settings.unhide_fw)
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// {
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// uint32 reg;
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// LOG(4, ("AGP: STRAPINFO2 contains $%08x\n", ENG_RG32(RG32_NVSTRAPINFO2)));
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// LOG(4, ("AGP: attempting to enable fastwrite support..\n"));
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/* 'force' FW support */
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// reg = (ENG_RG32(RG32_NVSTRAPINFO2) & ~0x00000800);
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/* enable strapinfo overwrite */
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// ENG_RG32(RG32_NVSTRAPINFO2) = (reg | 0x80000000);
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// LOG(4, ("AGP: STRAPINFO2 now contains $%08x\n", ENG_RG32(RG32_NVSTRAPINFO2)));
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// }
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/* set the magic number so the skeleton kerneldriver knows we're for real */
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nca.magic = nai.magic = SKEL_PRIVATE_DATA_MAGIC;
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/* contact driver and get a pointer to the registers and shared data */
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for (index = 0; index < 8; index++)
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{
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/* get nth AGP device info */
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nai.index = index;
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ioctl(fd, ENG_GET_NTH_AGP_INFO, &nai, sizeof(nai));
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/* abort if no agp busmanager found */
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if (!nai.agp_bus)
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{
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LOG(4,("AGP: no AGP busmanager found.\n"));
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/* don't touch AGP command register, we don't know what has been setup:
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* touching it anyway might 'hang' the graphics card! */
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return B_ERROR;
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}
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/* exit if we didn't get device info for this index */
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if (!nai.exist)
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{
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if (index != 0)
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LOG(4,("AGP: end of AGP capable devices list.\n"));
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else
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LOG(4,("AGP: no AGP capable devices found.\n"));
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break;
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}
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LOG(4,("AGP: AGP capable device #%d:\n", (index + 1)));
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/* see if we are this one */
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if ((nai.agpi.device_id == si->device_id) &&
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(nai.agpi.vendor_id == si->vendor_id) &&
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(nai.agpi.bus == si->bus) &&
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(nai.agpi.device == si->device) &&
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(nai.agpi.function == si->function))
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{
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LOG(4,("AGP: (this is the device this accelerant controls)\n"));
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agp = true;
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/* remember our info */
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eng_ai = nai.agpi;
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}
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/* log capabilities */
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eng_agp_list_info(nai.agpi);
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}
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/* if our card is not an AGP type, abort here */
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/* Note:
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* We have to iterate through the capability list as specified in the PCI spec
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* one way or the other, otherwise we cannot distinquish between PCI and
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* AGP type cards as PCI cards still might have AGP registers that pretend to
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* support AGP.
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* We rely on the AGP busmanager to iterate trough this list for us. */
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if (!agp)
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{
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LOG(4,("AGP: the graphicscard this accelerant controls is PCI type.\n"));
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/* make sure card is set for PCI access */
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// CFGW(AGPCMD, 0x00000000);
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return B_ERROR;
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}
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if (si->settings.force_pci)
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{
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/* set PCI mode if specified by user in skel.settings */
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LOG(4,("AGP: forcing PCI mode (specified in skel.settings)\n"));
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/* let the AGP busmanager setup PCI mode.
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* (the AGP speed scheme is of no consequence now) */
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nca.cmd = 0x00000000;
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ioctl(fd, ENG_ENABLE_AGP, &nca, sizeof(nca));
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}
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else
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{
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/* activate AGP mode */
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LOG(4,("AGP: activating AGP mode...\n"));
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/* let the AGP busmanager worry about what mode to set.. */
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nca.cmd = 0xfffffff7;
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/* ..but we do need to select the right speed scheme fetched from our card */
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if (eng_ai.interface.agp_stat & AGP_rate_rev) nca.cmd |= AGP_rate_rev;
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ioctl(fd, ENG_ENABLE_AGP, &nca, sizeof(nca));
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}
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/* list mode now activated,
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* make sure we have the correct speed scheme for logging */
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eng_agp_list_active(nca.cmd | (eng_ai.interface.agp_stat & AGP_rate_rev));
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/* extra check */
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// LOG(4,("AGP: graphics card AGPCMD register readback $%08x\n", CFGR(AGPCMD)));
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return B_OK;
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}
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static void eng_agp_list_info(agp_info ai)
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{
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/*
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list device
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*/
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if (ai.class_base == PCI_display)
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LOG(4,("AGP: device is a graphicscard, subclass ID is $%02x\n", ai.class_sub));
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else
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LOG(4,("AGP: device is a hostbridge, subclass ID is $%02x\n", ai.class_sub));
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LOG(4,("AGP: vendor ID $%04x\n", ai.vendor_id));
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LOG(4,("AGP: device ID $%04x\n", ai.device_id));
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LOG(4,("AGP: bus %d, device %d, function %d\n", ai.bus, ai.device, ai.function));
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/*
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list capabilities
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*/
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LOG(4,("AGP: this device supports AGP specification %d.%d;\n",
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((ai.interface.agp_cap_id & AGP_rev_major) >> AGP_rev_major_shift),
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((ai.interface.agp_cap_id & AGP_rev_minor) >> AGP_rev_minor_shift)));
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/* the AGP devices determine AGP speed scheme version used on power-up/reset */
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if (!(ai.interface.agp_stat & AGP_rate_rev))
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{
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/* AGP 2.0 scheme applies */
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if (ai.interface.agp_stat & AGP_2_1x)
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LOG(4,("AGP: AGP 2.0 1x mode is available\n"));
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if (ai.interface.agp_stat & AGP_2_2x)
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LOG(4,("AGP: AGP 2.0 2x mode is available\n"));
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if (ai.interface.agp_stat & AGP_2_4x)
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LOG(4,("AGP: AGP 2.0 4x mode is available\n"));
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}
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else
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{
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/* AGP 3.0 scheme applies */
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if (ai.interface.agp_stat & AGP_3_4x)
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LOG(4,("AGP: AGP 3.0 4x mode is available\n"));
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if (ai.interface.agp_stat & AGP_3_8x)
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LOG(4,("AGP: AGP 3.0 8x mode is available\n"));
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}
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if (ai.interface.agp_stat & AGP_FW) LOG(4,("AGP: fastwrite transfers are supported\n"));
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if (ai.interface.agp_stat & AGP_SBA) LOG(4,("AGP: sideband adressing is supported\n"));
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LOG(4,("AGP: %d queued AGP requests can be handled.\n",
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(((ai.interface.agp_stat & AGP_RQ) >> AGP_RQ_shift) + 1)));
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/*
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list current settings,
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make sure we have the correct speed scheme for logging
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*/
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eng_agp_list_active(ai.interface.agp_cmd | (ai.interface.agp_stat & AGP_rate_rev));
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}
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static void eng_agp_list_active(uint32 cmd)
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{
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LOG(4,("AGP: listing settings now in use:\n"));
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if (!(cmd & AGP_rate_rev))
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{
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/* AGP 2.0 scheme applies */
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if (cmd & AGP_2_1x)
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LOG(4,("AGP: AGP 2.0 1x mode is set\n"));
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if (cmd & AGP_2_2x)
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LOG(4,("AGP: AGP 2.0 2x mode is set\n"));
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if (cmd & AGP_2_4x)
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LOG(4,("AGP: AGP 2.0 4x mode is set\n"));
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}
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else
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{
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/* AGP 3.0 scheme applies */
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if (cmd & AGP_3_4x)
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LOG(4,("AGP: AGP 3.0 4x mode is set\n"));
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if (cmd & AGP_3_8x)
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LOG(4,("AGP: AGP 3.0 8x mode is set\n"));
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}
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if (cmd & AGP_FW) LOG(4,("AGP: fastwrite transfers are enabled\n"));
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if (cmd & AGP_SBA) LOG(4,("AGP: sideband adressing is enabled\n"));
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LOG(4,("AGP: max. AGP queued request depth is set to %d\n",
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(((cmd & AGP_RQ) >> AGP_RQ_shift) + 1)));
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if (cmd & AGP_enable)
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LOG(4,("AGP: the AGP interface is enabled.\n"));
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else
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LOG(4,("AGP: the AGP interface is disabled.\n"));
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}
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