Add support for i830/i845 agp. From Shingo WATANABE (on tech-x11) and
FreeBSD, with cleanup/KNF by me. Note: These chipsets are not well supported by the i810 driver in NetBSD's in-tree xsrc (based on XFree86 4.2.1 at this time). However, the driver works perfectly using bleeding-edge XFree86-current on my Omnibook's i830MG with these agp changes.
This commit is contained in:
scw
parent
e627b7fefc
commit
173ca7d4d0
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@ -1,4 +1,4 @@
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/* $NetBSD: agp.c,v 1.22 2002/10/23 09:13:31 jdolecek Exp $ */
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/* $NetBSD: agp.c,v 1.23 2002/12/13 11:32:50 scw Exp $ */
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/*-
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* Copyright (c) 2000 Doug Rabson
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@ -65,7 +65,7 @@
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: agp.c,v 1.22 2002/10/23 09:13:31 jdolecek Exp $");
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__KERNEL_RCSID(0, "$NetBSD: agp.c,v 1.23 2002/12/13 11:32:50 scw Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -151,11 +151,10 @@ const struct agp_product {
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NULL, agp_i810_attach },
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{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82840_HB,
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NULL, agp_i810_attach },
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#if 0
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/* XXX needs somewhat different driver */
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{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82830MP_IO_1,
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NULL, agp_i810_attach },
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#endif
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{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82845G_DRAM,
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NULL, agp_i810_attach },
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#endif
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#if NAGP_INTEL > 0
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@ -1,4 +1,4 @@
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/* $NetBSD: agp_i810.c,v 1.13 2002/08/11 12:36:21 drochner Exp $ */
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/* $NetBSD: agp_i810.c,v 1.14 2002/12/13 11:32:51 scw Exp $ */
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/*-
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* Copyright (c) 2000 Doug Rabson
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@ -30,7 +30,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: agp_i810.c,v 1.13 2002/08/11 12:36:21 drochner Exp $");
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__KERNEL_RCSID(0, "$NetBSD: agp_i810.c,v 1.14 2002/12/13 11:32:51 scw Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -54,12 +54,19 @@ __KERNEL_RCSID(0, "$NetBSD: agp_i810.c,v 1.13 2002/08/11 12:36:21 drochner Exp $
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#include <machine/bus.h>
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#define READ1(off) bus_space_read_1(isc->bst, isc->bsh, off)
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#define READ4(off) bus_space_read_4(isc->bst, isc->bsh, off)
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#define WRITE4(off,v) bus_space_write_4(isc->bst, isc->bsh, off, v)
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#define CHIP_I810 0 /* i810/i815 */
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#define CHIP_I830 1 /* i830/i845 */
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struct agp_i810_softc {
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u_int32_t initial_aperture; /* aperture size at startup */
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struct agp_gatt *gatt;
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u_int32_t dcache_size;
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int chiptype; /* i810-like or i830 */
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u_int32_t dcache_size; /* i810 only */
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u_int32_t stolen; /* number of i830/845 gtt entries
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for stolen memory */
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bus_space_tag_t bst; /* bus_space tag */
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bus_space_handle_t bsh; /* bus_space handle */
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struct pci_attach_args vga_pa;
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@ -104,7 +111,8 @@ agp_i810_vgamatch(struct pci_attach_args *pa)
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case PCI_PRODUCT_INTEL_82810_DC100_GC:
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case PCI_PRODUCT_INTEL_82810E_GC:
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case PCI_PRODUCT_INTEL_82815_FULL_GRAPH:
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/*case PCI_PRODUCT_INTEL_82830MP_IV: XXX needs somewhat different driver */
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case PCI_PRODUCT_INTEL_82830MP_IV:
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case PCI_PRODUCT_INTEL_82845G_IGD:
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return (1);
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}
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@ -143,6 +151,19 @@ agp_i810_attach(struct device *parent, struct device *self, void *aux)
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return error;
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}
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switch (PCI_PRODUCT(isc->vga_pa.pa_id)) {
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case PCI_PRODUCT_INTEL_82810_GC:
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case PCI_PRODUCT_INTEL_82810_DC100_GC:
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case PCI_PRODUCT_INTEL_82810E_GC:
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case PCI_PRODUCT_INTEL_82815_FULL_GRAPH:
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isc->chiptype = CHIP_I810;
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break;
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case PCI_PRODUCT_INTEL_82830MP_IV:
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case PCI_PRODUCT_INTEL_82845G_IGD:
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isc->chiptype = CHIP_I830;
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break;
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}
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error = pci_mapreg_map(&isc->vga_pa, AGP_I810_MMADR,
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PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, NULL, NULL);
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if (error != 0) {
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@ -152,35 +173,84 @@ agp_i810_attach(struct device *parent, struct device *self, void *aux)
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isc->initial_aperture = AGP_GET_APERTURE(sc);
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if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED)
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isc->dcache_size = 4 * 1024 * 1024;
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else
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isc->dcache_size = 0;
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for (;;) {
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gatt = agp_alloc_gatt(sc);
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if (gatt)
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break;
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/*
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* Probably contigmalloc failure. Try reducing the
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* aperture so that the gatt size reduces.
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*/
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if (AGP_SET_APERTURE(sc, AGP_GET_APERTURE(sc) / 2)) {
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agp_generic_detach(sc);
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return ENOMEM;
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}
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gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT);
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if (!gatt) {
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agp_generic_detach(sc);
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return ENOMEM;
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}
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isc->gatt = gatt;
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/* Install the GATT. */
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WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1);
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gatt->ag_entries = AGP_GET_APERTURE(sc) >> AGP_PAGE_SHIFT;
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if (isc->chiptype == CHIP_I810) {
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int dummyseg;
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/* Some i810s have on-chip memory called dcache */
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if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED)
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isc->dcache_size = 4 * 1024 * 1024;
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else
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isc->dcache_size = 0;
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/* According to the specs the gatt on the i810 must be 64k */
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if (agp_alloc_dmamem(sc->as_dmat, 64 * 1024,
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0, &gatt->ag_dmamap, (caddr_t *)&gatt->ag_virtual,
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&gatt->ag_physical, &gatt->ag_dmaseg, 1, &dummyseg) != 0) {
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free(gatt, M_AGP);
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agp_generic_detach(sc);
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return ENOMEM;
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}
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gatt->ag_size = gatt->ag_entries * sizeof(u_int32_t);
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memset(gatt->ag_virtual, 0, gatt->ag_size);
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agp_flush_cache();
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/* Install the GATT. */
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WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1);
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} else {
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/* The i830 automatically initializes the 128k gatt on boot. */
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pcireg_t reg;
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u_int32_t pgtblctl;
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u_int16_t gcc1;
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reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0);
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gcc1 = (u_int16_t)(reg >> 16);
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switch (gcc1 & AGP_I830_GCC1_GMS) {
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case AGP_I830_GCC1_GMS_STOLEN_512:
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isc->stolen = (512 - 132) * 1024 / 4096;
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break;
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case AGP_I830_GCC1_GMS_STOLEN_1024:
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isc->stolen = (1024 - 132) * 1024 / 4096;
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break;
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case AGP_I830_GCC1_GMS_STOLEN_8192:
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isc->stolen = (8192 - 132) * 1024 / 4096;
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break;
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default:
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isc->stolen = 0;
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printf(": unknown memory configuration, disabling\n");
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agp_generic_detach(sc);
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return EINVAL;
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}
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if (isc->stolen > 0) {
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printf(": detected %dk stolen memory\n",
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isc->stolen * 4);
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}
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printf("%s: aperture size is %dM\n", sc->as_dev.dv_xname,
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isc->initial_aperture / 1024 / 1024);
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/* GATT address is already in there, make sure it's enabled */
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pgtblctl = READ4(AGP_I810_PGTBL_CTL);
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pgtblctl |= 1;
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WRITE4(AGP_I810_PGTBL_CTL, pgtblctl);
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gatt->ag_physical = pgtblctl & ~1;
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}
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/*
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* Make sure the chipset can see everything.
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*/
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agp_flush_cache();
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printf("%s", sc->as_dev.dv_xname);
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return 0;
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}
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@ -196,12 +266,23 @@ agp_i810_detach(struct agp_softc *sc)
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return error;
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/* Clear the GATT base. */
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WRITE4(AGP_I810_PGTBL_CTL, 0);
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if (sc->chiptype == CHIP_I810) {
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WRITE4(AGP_I810_PGTBL_CTL, 0);
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} else {
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unsigned int pgtblctl;
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pgtblctl = READ4(AGP_I810_PGTBL_CTL);
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pgtblctl &= ~1;
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WRITE4(AGP_I810_PGTBL_CTL, pgtblctl);
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}
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/* Put the aperture back the way it started. */
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AGP_SET_APERTURE(sc, isc->initial_aperture);
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agp_free_gatt(sc, isc->gatt);
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if (sc->chiptype == CHIP_I810) {
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agp_free_dmamem(sc->as_dmat, gatt->ag_size, gatt->ag_dmamap,
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(caddr_t)gatt->ag_virtual, &gatt->ag_dmaseg, 1);
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}
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free(sc->gatt, M_AGP);
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return 0;
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}
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@ -210,41 +291,83 @@ agp_i810_detach(struct agp_softc *sc)
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static u_int32_t
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agp_i810_get_aperture(struct agp_softc *sc)
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{
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u_int16_t miscc;
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struct agp_i810_softc *isc = sc->as_chipc;
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pcireg_t reg;
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miscc = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM) >> 16;
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if ((miscc & AGP_I810_MISCC_WINSIZE) == AGP_I810_MISCC_WINSIZE_32)
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return 32 * 1024 * 1024;
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else
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return 64 * 1024 * 1024;
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if (isc->chiptype == CHIP_I810) {
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u_int16_t miscc;
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reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM);
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miscc = (u_int16_t)(reg >> 16);
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if ((miscc & AGP_I810_MISCC_WINSIZE) ==
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AGP_I810_MISCC_WINSIZE_32)
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return 32 * 1024 * 1024;
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else
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return 64 * 1024 * 1024;
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} else { /* I830 */
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u_int16_t gcc1;
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reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0);
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gcc1 = (u_int16_t)(reg >> 16);
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if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64)
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return 64 * 1024 * 1024;
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else
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return 128 * 1024 * 1024;
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}
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}
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static int
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agp_i810_set_aperture(struct agp_softc *sc, u_int32_t aperture)
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{
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pcireg_t reg, miscc;
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struct agp_i810_softc *isc = sc->as_chipc;
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pcireg_t reg;
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/*
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* Double check for sanity.
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*/
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if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) {
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printf("%s: bad aperture size %d\n", sc->as_dev.dv_xname,
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aperture);
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return EINVAL;
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if (isc->chiptype == CHIP_I810) {
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u_int16_t miscc;
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/*
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* Double check for sanity.
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*/
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if (aperture != (32 * 1024 * 1024) &&
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aperture != (64 * 1024 * 1024)) {
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printf("%s: bad aperture size %d\n",
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sc->as_dev.dv_xname, aperture);
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return EINVAL;
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}
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reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM);
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miscc = (u_int16_t)(reg >> 16);
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miscc &= ~AGP_I810_MISCC_WINSIZE;
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if (aperture == 32 * 1024 * 1024)
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miscc |= AGP_I810_MISCC_WINSIZE_32;
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else
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miscc |= AGP_I810_MISCC_WINSIZE_64;
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reg &= 0x0000ffff;
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reg |= ((pcireg_t)miscc) << 16;
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pci_conf_write(sc->as_pc, sc->as_tag, AGP_I810_SMRAM, reg);
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} else { /* I830 */
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u_int16_t gcc1;
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if (aperture != (64 * 1024 * 1024) &&
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aperture != (128 * 1024 * 1024)) {
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printf("%s: bad aperture size %d\n",
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sc->as_dev.dv_xname, aperture);
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return EINVAL;
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}
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reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0);
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gcc1 = (u_int16_t)(reg >> 16);
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gcc1 &= ~AGP_I830_GCC1_GMASIZE;
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if (aperture == 64 * 1024 * 1024)
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gcc1 |= AGP_I830_GCC1_GMASIZE_64;
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else
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gcc1 |= AGP_I830_GCC1_GMASIZE_128;
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reg &= 0x0000ffff;
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reg |= ((pcireg_t)gcc1) << 16;
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pci_conf_write(sc->as_pc, sc->as_tag, AGP_I830_GCC0, reg);
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}
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reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM);
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miscc = reg >> 16;
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miscc &= ~AGP_I810_MISCC_WINSIZE;
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if (aperture == 32 * 1024 * 1024)
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miscc |= AGP_I810_MISCC_WINSIZE_32;
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else
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miscc |= AGP_I810_MISCC_WINSIZE_64;
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reg &= 0x0000ffff;
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reg |= (miscc << 16);
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pci_conf_write(sc->as_pc, sc->as_tag, AGP_I810_SMRAM, miscc);
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return 0;
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}
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@ -253,8 +376,24 @@ agp_i810_bind_page(struct agp_softc *sc, off_t offset, bus_addr_t physical)
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{
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struct agp_i810_softc *isc = sc->as_chipc;
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if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT))
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if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) {
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#ifdef DEBUG
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printf("%s: failed: offset 0x%08x, shift %d, entries %d\n",
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sc->as_dev.dv_xname, (int)offset, AGP_PAGE_SHIFT,
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isc->gatt->ag_entries);
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#endif
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return EINVAL;
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}
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if (isc->chiptype == CHIP_I810) {
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if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) {
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#ifdef DEBUG
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printf("%s: trying to bind into stolen memory",
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sc->as_dev.dv_xname);
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#endif
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return EINVAL;
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}
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}
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WRITE4(AGP_I810_GTT + (u_int32_t)(offset >> AGP_PAGE_SHIFT) * 4,
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physical | 1);
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@ -269,6 +408,16 @@ agp_i810_unbind_page(struct agp_softc *sc, off_t offset)
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if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT))
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return EINVAL;
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if (isc->chiptype == CHIP_I830 ) {
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if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) {
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#ifdef DEBUG
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printf("%s: trying to unbind from stolen memory",
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sc->as_dev.dv_xname);
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#endif
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return EINVAL;
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}
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}
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WRITE4(AGP_I810_GTT + (u_int32_t)(offset >> AGP_PAGE_SHIFT) * 4, 0);
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return 0;
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}
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@ -304,6 +453,8 @@ agp_i810_alloc_memory(struct agp_softc *sc, int type, vsize_t size)
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/*
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* Mapping local DRAM into GATT.
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*/
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if (isc->chiptype == CHIP_I830 )
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return 0;
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if (size != isc->dcache_size)
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return 0;
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} else if (type == 2) {
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@ -404,6 +555,9 @@ agp_i810_bind_memory(struct agp_softc *sc, struct agp_memory *mem,
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if (mem->am_type != 1)
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return agp_generic_bind_memory(sc, mem, offset);
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if (isc->chiptype == CHIP_I830)
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return EINVAL;
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for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
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WRITE4(AGP_I810_GTT + (u_int32_t)(offset >> AGP_PAGE_SHIFT) * 4,
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i | 3);
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@ -430,6 +584,9 @@ agp_i810_unbind_memory(struct agp_softc *sc, struct agp_memory *mem)
|
|||
if (mem->am_type != 1)
|
||||
return agp_generic_unbind_memory(sc, mem);
|
||||
|
||||
if (isc->chiptype == CHIP_I830)
|
||||
return EINVAL;
|
||||
|
||||
for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE)
|
||||
WRITE4(AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, 0);
|
||||
mem->am_is_bound = 0;
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: agpreg.h,v 1.1 2001/09/10 10:01:02 fvdl Exp $ */
|
||||
/* $NetBSD: agpreg.h,v 1.2 2002/12/13 11:32:51 scw Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2000 Doug Rabson
|
||||
|
|
@ -153,4 +153,20 @@
|
|||
#define AGP_I810_DRT_POPULATED 0x01
|
||||
#define AGP_I810_GTT 0x10000
|
||||
|
||||
/*
|
||||
* Config registers for i830MG device 0
|
||||
*/
|
||||
#define AGP_I830_GCC0 0x50
|
||||
#define AGP_I830_GCC1 0x52
|
||||
#define AGP_I830_GCC1_DEV2 0x08
|
||||
#define AGP_I830_GCC1_DEV2_ENABLED 0x00
|
||||
#define AGP_I830_GCC1_DEV2_DISABLED 0x08
|
||||
#define AGP_I830_GCC1_GMS 0x70
|
||||
#define AGP_I830_GCC1_GMS_STOLEN_512 0x20
|
||||
#define AGP_I830_GCC1_GMS_STOLEN_1024 0x30
|
||||
#define AGP_I830_GCC1_GMS_STOLEN_8192 0x40
|
||||
#define AGP_I830_GCC1_GMASIZE 0x01
|
||||
#define AGP_I830_GCC1_GMASIZE_64 0x01
|
||||
#define AGP_I830_GCC1_GMASIZE_128 0x00
|
||||
|
||||
#endif /* !_PCI_AGPREG_H_ */
|
||||
|
|
|
|||
Loading…
Reference in New Issue