/* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Portions Philip Brown phil@bolthole.com Dec 2001 */ #pragma ident "%Z%%M% %I% %E% SMI" /* * agpgart driver * * This driver is primary targeted at providing memory support for INTEL * AGP device, INTEL memory less video card, and AMD64 cpu GART devices. * So there are four main architectures, ARC_IGD810, ARC_IGD830, ARC_INTELAGP, * ARC_AMD64AGP, ARC_AMD64NOAGP to agpgart driver. However, the memory * interfaces are the same for these architectures. The difference is how to * manage the hardware GART table for them. * * For large memory allocation, this driver use direct mapping to userland * application interface to save kernel virtual memory . */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Dynamic debug support */ int agp_debug_var = 0; #define AGPDB_PRINT1(fmt) if (agp_debug_var == 1) cmn_err fmt #define AGPDB_PRINT2(fmt) if (agp_debug_var >= 1) cmn_err fmt /* Driver global softstate handle */ static void *agpgart_glob_soft_handle; #define MAX_INSTNUM 16 #define AGP_DEV2INST(devt) (getminor((devt)) >> 4) #define AGP_INST2MINOR(instance) ((instance) << 4) #define IS_INTEL_830(type) ((type) == ARC_IGD830) #define IS_TRUE_AGP(type) (((type) == ARC_INTELAGP) || \ ((type) == ARC_AMD64AGP)) #define agpinfo_default_to_32(v, v32) \ { \ (v32).agpi32_version = (v).agpi_version; \ (v32).agpi32_devid = (v).agpi_devid; \ (v32).agpi32_mode = (v).agpi_mode; \ (v32).agpi32_aperbase = (v).agpi_aperbase; \ (v32).agpi32_apersize = (v).agpi_apersize; \ (v32).agpi32_pgtotal = (v).agpi_pgtotal; \ (v32).agpi32_pgsystem = (v).agpi_pgsystem; \ (v32).agpi32_pgused = (v).agpi_pgused; \ } static ddi_dma_attr_t agpgart_dma_attr = { DMA_ATTR_V0, 0U, /* dma_attr_addr_lo */ 0xffffffffU, /* dma_attr_addr_hi */ 0xffffffffU, /* dma_attr_count_max */ (uint64_t)AGP_PAGE_SIZE, /* dma_attr_align */ 1, /* dma_attr_burstsizes */ 1, /* dma_attr_minxfer */ 0xffffffffU, /* dma_attr_maxxfer */ 0xffffffffU, /* dma_attr_seg */ 1, /* dma_attr_sgllen, variable */ 4, /* dma_attr_granular */ 0 /* dma_attr_flags */ }; /* * AMD64 supports gart table above 4G. See alloc_gart_table. */ static ddi_dma_attr_t garttable_dma_attr = { DMA_ATTR_V0, 0U, /* dma_attr_addr_lo */ 0xffffffffU, /* dma_attr_addr_hi */ 0xffffffffU, /* dma_attr_count_max */ (uint64_t)AGP_PAGE_SIZE, /* dma_attr_align */ 1, /* dma_attr_burstsizes */ 1, /* dma_attr_minxfer */ 0xffffffffU, /* dma_attr_maxxfer */ 0xffffffffU, /* dma_attr_seg */ 1, /* dma_attr_sgllen, variable */ 4, /* dma_attr_granular */ 0 /* dma_attr_flags */ }; /* * AGPGART table need a physical contiguous memory. To assure that * each access to gart table is strongly ordered and uncachable, * we use DDI_STRICTORDER_ACC. */ static ddi_device_acc_attr_t gart_dev_acc_attr = { DDI_DEVICE_ATTR_V0, DDI_NEVERSWAP_ACC, DDI_STRICTORDER_ACC /* must be DDI_STRICTORDER_ACC */ }; /* * AGP memory is usually used as texture memory or for a framebuffer, so we * can set the memory attribute to write combining. Video drivers will * determine the frame buffer attributes, for example the memory is write * combinging or non-cachable. However, the interface between Xorg and agpgart * driver to support attribute selcetion doesn't exist yet. So we set agp memory * to non-cachable by default now. This attribute might be overridden * by MTTR in X86. */ static ddi_device_acc_attr_t mem_dev_acc_attr = { DDI_DEVICE_ATTR_V0, DDI_NEVERSWAP_ACC, DDI_STRICTORDER_ACC /* Can be DDI_MERGING_OK_ACC */ }; static keytable_ent_t * agp_find_bound_keyent(agpgart_softstate_t *softstate, uint32_t pg_offset); static void amd64_gart_unregister(amd64_garts_dev_t *cpu_garts); static void agp_devmap_unmap(devmap_cookie_t handle, void *devprivate, offset_t off, size_t len, devmap_cookie_t new_handle1, void **new_devprivate1, devmap_cookie_t new_handle2, void **new_devprivate2) { struct keytable_ent *mementry; agpgart_softstate_t *softstate; agpgart_ctx_t *ctxp, *newctxp1, *newctxp2; ASSERT(AGP_ALIGNED(len) && AGP_ALIGNED(off)); ASSERT(devprivate); ASSERT(handle); ctxp = (agpgart_ctx_t *)devprivate; softstate = ctxp->actx_sc; ASSERT(softstate); if (new_handle1 != NULL) { newctxp1 = kmem_zalloc(sizeof (agpgart_ctx_t), KM_SLEEP); newctxp1->actx_sc = softstate; newctxp1->actx_off = ctxp->actx_off; *new_devprivate1 = newctxp1; } if (new_handle2 != NULL) { newctxp2 = kmem_zalloc(sizeof (agpgart_ctx_t), KM_SLEEP); newctxp2->actx_sc = softstate; newctxp2->actx_off = off + len; *new_devprivate2 = newctxp2; } mutex_enter(&softstate->asoft_instmutex); if ((new_handle1 == NULL) && (new_handle2 == NULL)) { mementry = agp_find_bound_keyent(softstate, AGP_BYTES2PAGES(off)); ASSERT(mementry); mementry->kte_refcnt--; } else if ((new_handle1 != NULL) && (new_handle2 != NULL)) { mementry = agp_find_bound_keyent(softstate, AGP_BYTES2PAGES(off)); ASSERT(mementry); mementry->kte_refcnt++; } ASSERT(mementry->kte_refcnt >= 0); mutex_exit(&softstate->asoft_instmutex); kmem_free(ctxp, sizeof (struct agpgart_ctx)); } /*ARGSUSED*/ static int agp_devmap_map(devmap_cookie_t handle, dev_t dev, uint_t flags, offset_t offset, size_t len, void **new_devprivate) { agpgart_softstate_t *softstate; int instance; struct keytable_ent *mementry; agpgart_ctx_t *newctxp; ASSERT(handle); instance = AGP_DEV2INST(dev); softstate = ddi_get_soft_state(agpgart_glob_soft_handle, instance); if (softstate == NULL) { AGPDB_PRINT2((CE_WARN, "agp_devmap_map: get soft state err")); return (ENXIO); } ASSERT(softstate); ASSERT(mutex_owned(&softstate->asoft_instmutex)); ASSERT(len); ASSERT(AGP_ALIGNED(offset) && AGP_ALIGNED(len)); mementry = agp_find_bound_keyent(softstate, AGP_BYTES2PAGES(offset)); ASSERT(mementry); mementry->kte_refcnt++; ASSERT(mementry->kte_refcnt >= 0); newctxp = kmem_zalloc(sizeof (agpgart_ctx_t), KM_SLEEP); newctxp->actx_off = offset; newctxp->actx_sc = softstate; *new_devprivate = newctxp; return (0); } /*ARGSUSED*/ static int agp_devmap_dup(devmap_cookie_t handle, void *devprivate, devmap_cookie_t new_handle, void **new_devprivate) { struct keytable_ent *mementry; agpgart_ctx_t *newctxp, *ctxp; agpgart_softstate_t *softstate; ASSERT(devprivate); ASSERT(handle && new_handle); ctxp = (agpgart_ctx_t *)devprivate; ASSERT(AGP_ALIGNED(ctxp->actx_off)); newctxp = kmem_zalloc(sizeof (agpgart_ctx_t), KM_SLEEP); newctxp->actx_off = ctxp->actx_off; newctxp->actx_sc = ctxp->actx_sc; softstate = (agpgart_softstate_t *)newctxp->actx_sc; mutex_enter(&softstate->asoft_instmutex); mementry = agp_find_bound_keyent(softstate, AGP_BYTES2PAGES(newctxp->actx_off)); mementry->kte_refcnt++; ASSERT(mementry->kte_refcnt >= 0); mutex_exit(&softstate->asoft_instmutex); *new_devprivate = newctxp; return (0); } struct devmap_callback_ctl agp_devmap_cb = { DEVMAP_OPS_REV, /* rev */ agp_devmap_map, /* map */ NULL, /* access */ agp_devmap_dup, /* dup */ agp_devmap_unmap, /* unmap */ }; /* * agp_master_regis_byname() * * Description: * Open the AGP master device node by device path name and * register the device handle for later operations. * We check all possible driver instance from 0 * to MAX_INSTNUM because the master device could be * at any instance number. Only one AGP master is supported. * * Arguments: * master_hdlp AGP master device LDI handle pointer * agpgart_l AGPGART driver LDI identifier * * Returns: * -1 failed * 0 success */ static int agp_master_regis_byname(ldi_handle_t *master_hdlp, ldi_ident_t agpgart_li) { int i; char buf[MAXPATHLEN]; ASSERT(master_hdlp); ASSERT(agpgart_li); /* * Search all possible instance numbers for the agp master device. * Only one master device is supported now, so the search ends * when one master device is found. */ for (i = 0; i < MAX_INSTNUM; i++) { (void) snprintf(buf, MAXPATHLEN, "%s%d", AGPMASTER_DEVLINK, i); if ((ldi_open_by_name(buf, 0, kcred, master_hdlp, agpgart_li))) continue; AGPDB_PRINT1((CE_NOTE, "master device found: instance number=%d", i)); break; } /* AGP master device not found */ if (i == MAX_INSTNUM) return (-1); return (0); } /* * agp_target_regis_byname() * * Description: * This function opens agp bridge device node by * device path name and registers the device handle * for later operations. * We check driver instance from 0 to MAX_INSTNUM * because the master device could be at any instance * number. Only one agp target is supported. * * * Arguments: * target_hdlp AGP target device LDI handle pointer * agpgart_l AGPGART driver LDI identifier * * Returns: * -1 failed * 0 success */ static int agp_target_regis_byname(ldi_handle_t *target_hdlp, ldi_ident_t agpgart_li) { int i; char buf[MAXPATHLEN]; ASSERT(target_hdlp); ASSERT(agpgart_li); for (i = 0; i < MAX_INSTNUM; i++) { (void) snprintf(buf, MAXPATHLEN, "%s%d", AGPTARGET_DEVLINK, i); if ((ldi_open_by_name(buf, 0, kcred, target_hdlp, agpgart_li))) continue; AGPDB_PRINT1((CE_NOTE, "bridge device found: instance number=%d", i)); break; } /* AGP bridge device not found */ if (i == MAX_INSTNUM) { AGPDB_PRINT2((CE_WARN, "bridge device not found")); return (-1); } return (0); } /* * amd64_gart_regis_byname() * * Description: * Open all amd64 gart device nodes by deice path name and * register the device handles for later operations. Each cpu * has its own amd64 gart device. * * Arguments: * cpu_garts cpu garts device list header * agpgart_l AGPGART driver LDI identifier * * Returns: * -1 failed * 0 success */ static int amd64_gart_regis_byname(amd64_garts_dev_t *cpu_garts, ldi_ident_t agpgart_li) { amd64_gart_dev_list_t *gart_list; int i; char buf[MAXPATHLEN]; ldi_handle_t gart_hdl; int ret; ASSERT(cpu_garts); ASSERT(agpgart_li); /* * Search all possible instance numbers for the gart devices. * There can be multiple on-cpu gart devices for Opteron server. */ for (i = 0; i < MAX_INSTNUM; i++) { (void) snprintf(buf, MAXPATHLEN, "%s%d", CPUGART_DEVLINK, i); ret = ldi_open_by_name(buf, 0, kcred, &gart_hdl, agpgart_li); if (ret == ENODEV) continue; else if (ret != 0) { /* There was an error opening the device */ amd64_gart_unregister(cpu_garts); return (ret); } AGPDB_PRINT1((CE_NOTE, "amd64 gart device found: instance number=%d", i)); gart_list = (amd64_gart_dev_list_t *) kmem_zalloc(sizeof (amd64_gart_dev_list_t), KM_SLEEP); /* Add new item to the head of the gart device list */ gart_list->gart_devhdl = gart_hdl; gart_list->next = cpu_garts->gart_dev_list_head; cpu_garts->gart_dev_list_head = gart_list; cpu_garts->gart_device_num++; } if (cpu_garts->gart_device_num == 0) return (ENODEV); return (0); } /* * Unregister agp master device handle */ static void agp_master_unregister(ldi_handle_t *master_hdlp) { ASSERT(master_hdlp); if (master_hdlp) { (void) ldi_close(*master_hdlp, 0, kcred); *master_hdlp = NULL; } } /* * Unregister agp bridge device handle */ static void agp_target_unregister(ldi_handle_t *target_hdlp) { if (target_hdlp) { (void) ldi_close(*target_hdlp, 0, kcred); *target_hdlp = NULL; } } /* * Unregister all amd64 gart device handles */ static void amd64_gart_unregister(amd64_garts_dev_t *cpu_garts) { amd64_gart_dev_list_t *gart_list; amd64_gart_dev_list_t *next; ASSERT(cpu_garts); for (gart_list = cpu_garts->gart_dev_list_head; gart_list; gart_list = next) { ASSERT(gart_list->gart_devhdl); (void) ldi_close(gart_list->gart_devhdl, 0, kcred); next = gart_list->next; /* Free allocated memory */ kmem_free(gart_list, sizeof (amd64_gart_dev_list_t)); } cpu_garts->gart_dev_list_head = NULL; cpu_garts->gart_device_num = 0; } /* * lyr_detect_master_type() * * Description: * This function gets agp master type by querying agp master device. * * Arguments: * master_hdlp agp master device ldi handle pointer * * Returns: * -1 unsupported device * DEVICE_IS_I810 i810 series * DEVICE_IS_I810 i830 series * DEVICE_IS_AGP true agp master */ static int lyr_detect_master_type(ldi_handle_t *master_hdlp) { int vtype; int err; ASSERT(master_hdlp); /* ldi_ioctl(agpmaster) */ err = ldi_ioctl(*master_hdlp, DEVICE_DETECT, (intptr_t)&vtype, FKIOCTL, kcred, 0); if (err) /* Unsupported graphics device */ return (-1); return (vtype); } /* * devtect_target_type() * * Description: * This function gets the host bridge chipset type by querying the agp * target device. * * Arguments: * target_hdlp agp target device LDI handle pointer * * Returns: * CHIP_IS_INTEL Intel agp chipsets * CHIP_IS_AMD AMD agp chipset * -1 unsupported chipset */ static int lyr_detect_target_type(ldi_handle_t *target_hdlp) { int btype; int err; ASSERT(target_hdlp); err = ldi_ioctl(*target_hdlp, CHIP_DETECT, (intptr_t)&btype, FKIOCTL, kcred, 0); if (err) /* Unsupported bridge device */ return (-1); return (btype); } /* * lyr_init() * * Description: * This function detects the graphics system architecture and * registers all relative device handles in a global structure * "agp_regdev". Then it stores the system arc type in driver * soft state. * * Arguments: * agp_regdev AGP devices registration struct pointer * agpgart_l AGPGART driver LDI identifier * * Returns: * 0 System arc supported and agp devices registration successed. * -1 System arc not supported or device registration failed. */ int lyr_init(agp_registered_dev_t *agp_regdev, ldi_ident_t agpgart_li) { ldi_handle_t *master_hdlp; ldi_handle_t *target_hdlp; amd64_garts_dev_t *garts_dev; int card_type, chip_type; int ret; ASSERT(agp_regdev); bzero(agp_regdev, sizeof (agp_registered_dev_t)); agp_regdev->agprd_arctype = ARC_UNKNOWN; /* * Register agp devices, assuming all instances attached, and * detect which agp architucture this server belongs to. This * must be done before the agpgart driver starts to use layered * driver interfaces. */ master_hdlp = &agp_regdev->agprd_masterhdl; target_hdlp = &agp_regdev->agprd_targethdl; garts_dev = &agp_regdev->agprd_cpugarts; /* Check whether the system is amd64 arc */ if ((ret = amd64_gart_regis_byname(garts_dev, agpgart_li)) == ENODEV) { /* No amd64 gart devices */ AGPDB_PRINT1((CE_NOTE, "lyr_init: this is not an amd64 system")); if (agp_master_regis_byname(master_hdlp, agpgart_li)) { AGPDB_PRINT2((CE_WARN, "lyr_init: register master device unsuccessful")); goto err1; } if (agp_target_regis_byname(target_hdlp, agpgart_li)) { AGPDB_PRINT2((CE_WARN, "lyr_init: register target device unsuccessful")); goto err2; } card_type = lyr_detect_master_type(master_hdlp); /* * Detect system arc by master device. If it is a intel * integrated device, finish the detection successfully. */ switch (card_type) { case DEVICE_IS_I810: /* I810 likewise graphics */ AGPDB_PRINT1((CE_NOTE, "lyr_init: the system is Intel 810 arch")); agp_regdev->agprd_arctype = ARC_IGD810; return (0); case DEVICE_IS_I830: /* I830 likewise graphics */ AGPDB_PRINT1((CE_NOTE, "lyr_init: the system is Intel 830 arch")); agp_regdev->agprd_arctype = ARC_IGD830; return (0); case DEVICE_IS_AGP: /* AGP graphics */ break; default: /* Non IGD/AGP graphics */ AGPDB_PRINT2((CE_WARN, "lyr_init: non-supported master device")); goto err3; } chip_type = lyr_detect_target_type(target_hdlp); /* Continue to detect AGP arc by target device */ switch (chip_type) { case CHIP_IS_INTEL: /* Intel chipset */ AGPDB_PRINT1((CE_NOTE, "lyr_init: Intel AGP arch detected")); agp_regdev->agprd_arctype = ARC_INTELAGP; return (0); case CHIP_IS_AMD: /* AMD chipset */ AGPDB_PRINT2((CE_WARN, "lyr_init: no cpu gart, but have AMD64 chipsets")); goto err3; default: /* Non supported chipset */ AGPDB_PRINT2((CE_WARN, "lyr_init: detection can not continue")); goto err3; } } if (ret) return (-1); /* Errors in open amd64 cpu gart devices */ /* * AMD64 cpu gart device exsits, continue detection */ if (agp_master_regis_byname(master_hdlp, agpgart_li)) { AGPDB_PRINT1((CE_NOTE, "lyr_init: register master device unsuccessful")); agp_regdev->agprd_arctype = ARC_AMD64NOAGP; AGPDB_PRINT1((CE_NOTE, "lyr_init: no AGP master, but supports IOMMU in amd64")); return (0); /* Finished successfully */ } if (agp_target_regis_byname(target_hdlp, agpgart_li)) { AGPDB_PRINT1((CE_NOTE, "lyr_init: register target device unsuccessful")); agp_regdev->agprd_arctype = ARC_AMD64NOAGP; AGPDB_PRINT1((CE_NOTE, "lyr_init: no AGP bridge, but supports IOMMU in amd64")); agp_master_unregister(&agp_regdev->agprd_masterhdl); return (0); /* Finished successfully */ } AGPDB_PRINT1((CE_NOTE, "lyr_init: the system is AMD64 AGP architecture")); agp_regdev->agprd_arctype = ARC_AMD64AGP; return (0); /* Finished successfully */ err3: agp_target_unregister(&agp_regdev->agprd_targethdl); err2: agp_master_unregister(&agp_regdev->agprd_masterhdl); err1: agp_regdev->agprd_arctype = ARC_UNKNOWN; return (-1); } void lyr_end(agp_registered_dev_t *agp_regdev) { ASSERT(agp_regdev); switch (agp_regdev->agprd_arctype) { case ARC_IGD810: case ARC_IGD830: case ARC_INTELAGP: agp_master_unregister(&agp_regdev->agprd_masterhdl); agp_target_unregister(&agp_regdev->agprd_targethdl); return; case ARC_AMD64AGP: agp_master_unregister(&agp_regdev->agprd_masterhdl); agp_target_unregister(&agp_regdev->agprd_targethdl); amd64_gart_unregister(&agp_regdev->agprd_cpugarts); return; case ARC_AMD64NOAGP: amd64_gart_unregister(&agp_regdev->agprd_cpugarts); return; default: ASSERT(0); return; } } int lyr_get_info(agp_kern_info_t *info, agp_registered_dev_t *agp_regdev) { ldi_handle_t hdl; igd_info_t value1; i_agp_info_t value2; amdgart_info_t value3; size_t prealloc_size; int err; amd64_gart_dev_list_t *gart_head; ASSERT(info); ASSERT(agp_regdev); switch (agp_regdev->agprd_arctype) { case ARC_IGD810: hdl = agp_regdev->agprd_masterhdl; err = ldi_ioctl(hdl, I8XX_GET_INFO, (intptr_t)&value1, FKIOCTL, kcred, 0); if (err) return (-1); info->agpki_mdevid = value1.igd_devid; info->agpki_aperbase = value1.igd_aperbase; info->agpki_apersize = value1.igd_apersize; hdl = agp_regdev->agprd_targethdl; err = ldi_ioctl(hdl, I8XX_GET_PREALLOC_SIZE, (intptr_t)&prealloc_size, FKIOCTL, kcred, 0); if (err) return (-1); info->agpki_presize = prealloc_size; break; case ARC_IGD830: hdl = agp_regdev->agprd_masterhdl; err = ldi_ioctl(hdl, I8XX_GET_INFO, (intptr_t)&value1, FKIOCTL, kcred, 0); if (err) return (-1); info->agpki_mdevid = value1.igd_devid; info->agpki_aperbase = value1.igd_aperbase; info->agpki_apersize = value1.igd_apersize; hdl = agp_regdev->agprd_targethdl; err = ldi_ioctl(hdl, I8XX_GET_PREALLOC_SIZE, (intptr_t)&prealloc_size, FKIOCTL, kcred, 0); if (err) return (-1); /* * Assume all units are kilobytes unless explicitly * stated below: * preallocated GTT memory = preallocated memory - GTT size * - scratch page size * * scratch page size = 4 * GTT size = aperture size (in MBs) * this algorithm came from Xorg source code */ prealloc_size = prealloc_size - info->agpki_apersize - 4; info->agpki_presize = prealloc_size; break; case ARC_INTELAGP: case ARC_AMD64AGP: /* AGP devices */ hdl = agp_regdev->agprd_masterhdl; err = ldi_ioctl(hdl, AGP_MASTER_GETINFO, (intptr_t)&value2, FKIOCTL, kcred, 0); if (err) return (-1); info->agpki_mdevid = value2.iagp_devid; info->agpki_mver = value2.iagp_ver; info->agpki_mstatus = value2.iagp_mode; hdl = agp_regdev->agprd_targethdl; err = ldi_ioctl(hdl, AGP_TARGET_GETINFO, (intptr_t)&value2, FKIOCTL, kcred, 0); if (err) return (-1); info->agpki_tdevid = value2.iagp_devid; info->agpki_tver = value2.iagp_ver; info->agpki_tstatus = value2.iagp_mode; info->agpki_aperbase = value2.iagp_aperbase; info->agpki_apersize = value2.iagp_apersize; break; case ARC_AMD64NOAGP: /* Meaningful for IOMMU support only */ gart_head = agp_regdev->agprd_cpugarts.gart_dev_list_head; err = ldi_ioctl(gart_head->gart_devhdl, AMD64_GET_INFO, (intptr_t)&value3, FKIOCTL, kcred, 0); if (err) return (-1); info->agpki_aperbase = value3.cgart_aperbase; info->agpki_apersize = value3.cgart_apersize; break; default: AGPDB_PRINT2((CE_WARN, "lyr_get_info: function doesn't work for unknown arc")); return (-1); } if ((info->agpki_apersize >= MAXAPERMEGAS) || (info->agpki_apersize == 0) || (info->agpki_aperbase == 0)) { AGPDB_PRINT2((CE_WARN, "lyr_get_info: aperture is not programmed correctly!")); return (-1); } return (0); } /* * lyr_i8xx_add_to_gtt() * * Description: * This function sets up the integrated video device gtt table * via an ioclt to the AGP master driver. * * Arguments: * pg_offset The start entry to be setup * keyent Keytable entity pointer * agp_regdev AGP devices registration struct pointer * * Returns: * 0 success * -1 invalid operations */ int lyr_i8xx_add_to_gtt(uint32_t pg_offset, keytable_ent_t *keyent, agp_registered_dev_t *agp_regdev) { int err = 0; int rval; ldi_handle_t hdl; igd_gtt_seg_t gttseg; uint32_t *addrp, i; uint32_t npages; ASSERT(keyent); ASSERT(agp_regdev); gttseg.igs_pgstart = pg_offset; npages = keyent->kte_pages; gttseg.igs_npage = npages; gttseg.igs_type = keyent->kte_type; gttseg.igs_phyaddr = (uint32_t *)kmem_zalloc (sizeof (uint32_t) * gttseg.igs_npage, KM_SLEEP); addrp = gttseg.igs_phyaddr; for (i = 0; i < npages; i++, addrp++) { *addrp = (uint32_t)((keyent->kte_pfnarray[i]) << GTT_PAGE_SHIFT); } hdl = agp_regdev->agprd_masterhdl; if (ldi_ioctl(hdl, I8XX_ADD2GTT, (intptr_t)>tseg, FKIOCTL, kcred, &rval)) { AGPDB_PRINT2((CE_WARN, "lyr_i8xx_add_to_gtt: ldi_ioctl error")); AGPDB_PRINT2((CE_WARN, "lyr_i8xx_add_to_gtt: pg_start=0x%x", gttseg.igs_pgstart)); AGPDB_PRINT2((CE_WARN, "lyr_i8xx_add_to_gtt: pages=0x%x", gttseg.igs_npage)); AGPDB_PRINT2((CE_WARN, "lyr_i8xx_add_to_gtt: type=0x%x", gttseg.igs_type)); err = -1; } kmem_free(gttseg.igs_phyaddr, sizeof (uint32_t) * gttseg.igs_npage); return (err); } /* * lyr_i8xx_remove_from_gtt() * * Description: * This function clears the integrated video device gtt table via * an ioctl to the agp master device. * * Arguments: * pg_offset The starting entry to be cleared * npage The number of entries to be cleared * agp_regdev AGP devices struct pointer * * Returns: * 0 success * -1 invalid operations */ int lyr_i8xx_remove_from_gtt(uint32_t pg_offset, uint32_t npage, agp_registered_dev_t *agp_regdev) { int rval; ldi_handle_t hdl; igd_gtt_seg_t gttseg; gttseg.igs_pgstart = pg_offset; gttseg.igs_npage = npage; hdl = agp_regdev->agprd_masterhdl; if (ldi_ioctl(hdl, I8XX_REM_GTT, (intptr_t)>tseg, FKIOCTL, kcred, &rval)) return (-1); return (0); } /* * lyr_set_gart_addr() * * Description: * This function puts the gart table physical address in the * gart base register. * Please refer to gart and gtt table base register format for * gart base register format in agpdefs.h. * * Arguments: * phy_base The base physical address of gart table * agp_regdev AGP devices registration struct pointer * * Returns: * 0 success * -1 failed * */ int lyr_set_gart_addr(uint64_t phy_base, agp_registered_dev_t *agp_regdev) { amd64_gart_dev_list_t *gart_list; ldi_handle_t hdl; int err = 0; ASSERT(agp_regdev); switch (agp_regdev->agprd_arctype) { case ARC_IGD810: { uint32_t base; ASSERT((phy_base & ~I810_POINTER_MASK) == 0); base = (uint32_t)phy_base; hdl = agp_regdev->agprd_masterhdl; err = ldi_ioctl(hdl, I810_SET_GTT_BASE, (intptr_t)&base, FKIOCTL, kcred, 0); break; } case ARC_INTELAGP: { uint32_t addr; addr = (uint32_t)phy_base; ASSERT((phy_base & ~GTT_POINTER_MASK) == 0); hdl = agp_regdev->agprd_targethdl; err = ldi_ioctl(hdl, AGP_TARGET_SET_GATTADDR, (intptr_t)&addr, FKIOCTL, kcred, 0); break; } case ARC_AMD64NOAGP: case ARC_AMD64AGP: { uint32_t addr; ASSERT((phy_base & ~AMD64_POINTER_MASK) == 0); addr = (uint32_t)((phy_base >> AMD64_GARTBASE_SHIFT) & AMD64_GARTBASE_MASK); for (gart_list = agp_regdev->agprd_cpugarts.gart_dev_list_head; gart_list; gart_list = gart_list->next) { hdl = gart_list->gart_devhdl; if (ldi_ioctl(hdl, AMD64_SET_GART_ADDR, (intptr_t)&addr, FKIOCTL, kcred, 0)) { err = -1; break; } } break; } default: err = -1; } if (err) return (-1); return (0); } int lyr_set_agp_cmd(uint32_t cmd, agp_registered_dev_t *agp_regdev) { ldi_handle_t hdl; uint32_t command; ASSERT(agp_regdev); command = cmd; hdl = agp_regdev->agprd_targethdl; if (ldi_ioctl(hdl, AGP_TARGET_SETCMD, (intptr_t)&command, FKIOCTL, kcred, 0)) return (-1); hdl = agp_regdev->agprd_masterhdl; if (ldi_ioctl(hdl, AGP_MASTER_SETCMD, (intptr_t)&command, FKIOCTL, kcred, 0)) return (-1); return (0); } int lyr_config_devices(agp_registered_dev_t *agp_regdev) { amd64_gart_dev_list_t *gart_list; ldi_handle_t hdl; int rc = 0; ASSERT(agp_regdev); switch (agp_regdev->agprd_arctype) { case ARC_IGD830: case ARC_IGD810: break; case ARC_INTELAGP: { hdl = agp_regdev->agprd_targethdl; rc = ldi_ioctl(hdl, AGP_TARGET_CONFIGURE, 0, FKIOCTL, kcred, 0); break; } case ARC_AMD64NOAGP: case ARC_AMD64AGP: { /* * BIOS always shadow registers such like Aperture Base * register, Aperture Size Register from the AGP bridge * to the AMD64 CPU host bridge. If future BIOSes are broken * in this regard, we may need to shadow these registers * in driver. */ for (gart_list = agp_regdev->agprd_cpugarts.gart_dev_list_head; gart_list; gart_list = gart_list->next) { hdl = gart_list->gart_devhdl; if (ldi_ioctl(hdl, AMD64_CONFIGURE, 0, FKIOCTL, kcred, 0)) { rc = -1; break; } } break; } default: rc = -1; } if (rc) return (-1); return (0); } int lyr_unconfig_devices(agp_registered_dev_t *agp_regdev) { amd64_gart_dev_list_t *gart_list; ldi_handle_t hdl; int rc = 0; ASSERT(agp_regdev); switch (agp_regdev->agprd_arctype) { case ARC_IGD830: case ARC_IGD810: { hdl = agp_regdev->agprd_masterhdl; rc = ldi_ioctl(hdl, I8XX_UNCONFIG, 0, FKIOCTL, kcred, 0); break; } case ARC_INTELAGP: { hdl = agp_regdev->agprd_targethdl; rc = ldi_ioctl(hdl, AGP_TARGET_UNCONFIG, 0, FKIOCTL, kcred, 0); break; } case ARC_AMD64NOAGP: case ARC_AMD64AGP: { for (gart_list = agp_regdev->agprd_cpugarts.gart_dev_list_head; gart_list; gart_list = gart_list->next) { hdl = gart_list->gart_devhdl; if (ldi_ioctl(hdl, AMD64_UNCONFIG, 0, FKIOCTL, kcred, 0)) { rc = -1; break; } } break; } default: rc = -1; } if (rc) return (-1); return (0); } /* * lyr_flush_gart_cache() * * Description: * This function flushes the GART translation look-aside buffer. All * GART translation caches will be flushed after this operation. * * Arguments: * agp_regdev AGP devices struct pointer */ void lyr_flush_gart_cache(agp_registered_dev_t *agp_regdev) { amd64_gart_dev_list_t *gart_list; ldi_handle_t hdl; ASSERT(agp_regdev); if ((agp_regdev->agprd_arctype == ARC_AMD64AGP) || (agp_regdev->agprd_arctype == ARC_AMD64NOAGP)) { for (gart_list = agp_regdev->agprd_cpugarts.gart_dev_list_head; gart_list; gart_list = gart_list->next) { hdl = gart_list->gart_devhdl; (void) ldi_ioctl(hdl, AMD64_FLUSH_GTLB, 0, FKIOCTL, kcred, 0); } } else if (agp_regdev->agprd_arctype == ARC_INTELAGP) { hdl = agp_regdev->agprd_targethdl; (void) ldi_ioctl(hdl, AGP_TARGET_FLUSH_GTLB, 0, FKIOCTL, kcred, 0); } } /* * get_max_pages() * * Description: * This function compute the total pages allowed for agp aperture * based on the ammount of physical pages. * The algorithm is: compare the aperture size with 1/4 of total * physical pages, and use the smaller one to for the max available * pages. * * Arguments: * aper_size system agp aperture size (in MB) * * Returns: * The max possible number of agp memory pages available to users */ static uint32_t get_max_pages(uint32_t aper_size) { uint32_t i, j; ASSERT(aper_size <= MAXAPERMEGAS); i = AGP_MB2PAGES(aper_size); j = (physmem >> 2); return ((i < j) ? i : j); } /* * agp_fill_empty_keyent() * * Description: * This function finds a empty key table slot and * fills it with a new entity. * * Arguments: * softsate driver soft state pointer * entryp new entity data pointer * * Returns: * NULL no key table slot available * entryp the new entity slot pointer */ static keytable_ent_t * agp_fill_empty_keyent(agpgart_softstate_t *softstate, keytable_ent_t *entryp) { int key; keytable_ent_t *newentryp; ASSERT(softstate); ASSERT(entryp); ASSERT(entryp->kte_memhdl); ASSERT(entryp->kte_pfnarray); ASSERT(mutex_owned(&softstate->asoft_instmutex)); for (key = 0; key < AGP_MAXKEYS; key++) { newentryp = &softstate->asoft_table[key]; if (newentryp->kte_memhdl == NULL) { break; } } if (key >= AGP_MAXKEYS) { AGPDB_PRINT2((CE_WARN, "agp_fill_empty_keyent: key table exhausted")); return (NULL); } ASSERT(newentryp->kte_pfnarray == NULL); bcopy(entryp, newentryp, sizeof (keytable_ent_t)); newentryp->kte_key = key; return (newentryp); } /* * agp_find_bound_keyent() * * Description: * This function finds the key table entity by agp aperture page offset. * Every keytable entity will have an agp aperture range after the binding * operation. * * Arguments: * softsate driver soft state pointer * pg_offset agp aperture page offset * * Returns: * NULL no such keytable entity * pointer key table entity pointer found */ static keytable_ent_t * agp_find_bound_keyent(agpgart_softstate_t *softstate, uint32_t pg_offset) { int keycount; keytable_ent_t *entryp; ASSERT(softstate); ASSERT(mutex_owned(&softstate->asoft_instmutex)); for (keycount = 0; keycount < AGP_MAXKEYS; keycount++) { entryp = &softstate->asoft_table[keycount]; if (entryp->kte_bound == 0) { continue; } if (pg_offset < entryp->kte_pgoff) continue; if (pg_offset >= (entryp->kte_pgoff + entryp->kte_pages)) continue; ASSERT(entryp->kte_memhdl); ASSERT(entryp->kte_pfnarray); return (entryp); } return (NULL); } /* * agp_check_off() * * Description: * This function checks whether an AGP aperture range to be bound * overlaps with AGP offset already bound. * * Arguments: * entryp key table start entry pointer * pg_start AGP range start page offset * pg_num pages number to be bound * * Returns: * 0 Does not overlap * -1 Overlaps */ static int agp_check_off(keytable_ent_t *entryp, uint32_t pg_start, uint32_t pg_num) { int key; uint64_t pg_end; uint64_t kpg_end; ASSERT(entryp); pg_end = pg_start + pg_num; for (key = 0; key < AGP_MAXKEYS; key++) { if (!entryp[key].kte_bound) continue; kpg_end = entryp[key].kte_pgoff + entryp[key].kte_pages; if (!((pg_end <= entryp[key].kte_pgoff) || (pg_start >= kpg_end))) break; } if (key == AGP_MAXKEYS) return (0); else return (-1); } static int is_controlling_proc(agpgart_softstate_t *st) { ASSERT(st); if (!st->asoft_acquired) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_setup: gart not acquired")); return (-1); } if (st->asoft_curpid != ddi_get_pid()) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_release: not controlling process")); return (-1); } return (0); } static void release_control(agpgart_softstate_t *st) { st->asoft_curpid = 0; st->asoft_acquired = 0; } static void acquire_control(agpgart_softstate_t *st) { st->asoft_curpid = ddi_get_pid(); st->asoft_acquired = 1; } /* * agp_remove_from_gart() * * Description: * This function fills the gart table entries by a given page * frame number array and setup the agp aperture page to physical * memory page translation. * Arguments: * pg_offset Starting aperture page to be bound * entries the number of pages to be bound * acc_hdl GART table dma memory acc handle * tablep GART table kernel virtual address */ static void agp_remove_from_gart( uint32_t pg_offset, uint32_t entries, ddi_dma_handle_t dma_hdl, uint32_t *tablep) { uint32_t items = 0; uint32_t *entryp; entryp = tablep + pg_offset; while (items < entries) { *(entryp + items) = 0; items++; } (void) ddi_dma_sync(dma_hdl, pg_offset * sizeof (uint32_t), entries * sizeof (uint32_t), DDI_DMA_SYNC_FORDEV); } /* * agp_unbind_key() * * Description: * This function unbinds AGP memory from the gart table. It will clear * all the gart entries related to this agp memory. * * Arguments: * softstate driver soft state pointer * entryp key table entity pointer * * Returns: * EINVAL invalid key table entity pointer * 0 success * */ static int agp_unbind_key(agpgart_softstate_t *softstate, keytable_ent_t *entryp) { int retval = 0; ASSERT(entryp); ASSERT((entryp->kte_key >= 0) && (entryp->kte_key < AGP_MAXKEYS)); if (!entryp->kte_bound) { AGPDB_PRINT2((CE_WARN, "agp_unbind_key: key = 0x%x, not bound", entryp->kte_key)); return (EINVAL); } if (entryp->kte_refcnt) { AGPDB_PRINT2((CE_WARN, "agp_unbind_key: memory is exported to users")); return (EINVAL); } ASSERT((entryp->kte_pgoff + entryp->kte_pages) <= AGP_MB2PAGES(softstate->asoft_info.agpki_apersize)); ASSERT((softstate->asoft_devreg.agprd_arctype != ARC_UNKNOWN)); switch (softstate->asoft_devreg.agprd_arctype) { case ARC_IGD810: case ARC_IGD830: retval = lyr_i8xx_remove_from_gtt( entryp->kte_pgoff, entryp->kte_pages, &softstate->asoft_devreg); if (retval) { AGPDB_PRINT2((CE_WARN, "agp_unbind_key: Key = 0x%x, clear table error", entryp->kte_key)); return (EIO); } break; case ARC_INTELAGP: case ARC_AMD64NOAGP: case ARC_AMD64AGP: agp_remove_from_gart(entryp->kte_pgoff, entryp->kte_pages, softstate->gart_dma_handle, (uint32_t *)softstate->gart_vbase); /* Flush GTLB table */ lyr_flush_gart_cache(&softstate->asoft_devreg); break; } entryp->kte_bound = 0; return (0); } /* * agp_dealloc_kmem() * * Description: * This function deallocates dma memory resources for userland * applications. * * Arguments: * entryp keytable entity pointer */ static void agp_dealloc_kmem(keytable_ent_t *entryp) { kmem_free(entryp->kte_pfnarray, sizeof (pfn_t) * entryp->kte_pages); entryp->kte_pfnarray = NULL; (void) ddi_dma_unbind_handle(KMEMP(entryp->kte_memhdl)->kmem_handle); KMEMP(entryp->kte_memhdl)->kmem_cookies_num = 0; ddi_dma_mem_free(&KMEMP(entryp->kte_memhdl)->kmem_acchdl); KMEMP(entryp->kte_memhdl)->kmem_acchdl = NULL; KMEMP(entryp->kte_memhdl)->kmem_reallen = 0; KMEMP(entryp->kte_memhdl)->kmem_kvaddr = NULL; ddi_dma_free_handle(&(KMEMP(entryp->kte_memhdl)->kmem_handle)); KMEMP(entryp->kte_memhdl)->kmem_handle = NULL; kmem_free(entryp->kte_memhdl, sizeof (agp_kmem_handle_t)); entryp->kte_memhdl = NULL; } /* * agp_dealloc_pmem() * * Description: * This function deallocates memory resource for direct mapping to * userland applications. * * Arguments: * entryp key table entity pointer * */ static void agp_dealloc_pmem(keytable_ent_t *entryp) { devmap_pmem_free(PMEMP(entryp->kte_memhdl)->pmem_cookie); PMEMP(entryp->kte_memhdl)->pmem_cookie = NULL; kmem_free(entryp->kte_memhdl, sizeof (agp_pmem_handle_t)); entryp->kte_memhdl = NULL; /* free the page frame number array */ kmem_free(entryp->kte_pfnarray, sizeof (pfn_t) * entryp->kte_pages); entryp->kte_pfnarray = NULL; } /* * agp_dealloc_mem() * * Description: * This function deallocates physical memory resources allocated for * userland applications. * * Arguments: * st driver soft state pointer * entryp key table entity pointer * * Returns: * -1 not a valid memory type or the memory is mapped by * user area applications * 0 success */ static int agp_dealloc_mem(agpgart_softstate_t *st, keytable_ent_t *entryp) { ASSERT(entryp); ASSERT(st); ASSERT(entryp->kte_memhdl); ASSERT(mutex_owned(&st->asoft_instmutex)); /* auto unbind here */ if (entryp->kte_bound && !entryp->kte_refcnt) { AGPDB_PRINT2((CE_WARN, "agp_dealloc_mem: key=0x%x, auto unbind", entryp->kte_key)); /* * agp_dealloc_mem may be called indirectly by agp_detach. * In the agp_detach function, agpgart_close is already * called which will free the gart table. agp_unbind_key * will panic if no valid gart table exists. So test if * gart table exsits here. */ if (st->asoft_opened) (void) agp_unbind_key(st, entryp); } if (entryp->kte_refcnt) { AGPDB_PRINT2((CE_WARN, "agp_dealloc_pmem: memory is exported to users")); return (-1); } switch (entryp->kte_type) { case AGP_NORMAL: agp_dealloc_pmem(entryp); break; case AGP_PHYSICAL: agp_dealloc_kmem(entryp); break; default: return (-1); } return (0); } /* * agp_del_allkeys() * * Description: * This function calls agp_dealloc_mem to release all the agp memory * resource allocated. * * Arguments: * softsate driver soft state pointer * Returns: * -1 can not free all agp memory * 0 success * */ static int agp_del_allkeys(agpgart_softstate_t *softstate) { int key; int ret = 0; ASSERT(softstate); for (key = 0; key < AGP_MAXKEYS; key++) { if (softstate->asoft_table[key].kte_memhdl != NULL) { /* * Check if we can free agp memory now. * If agp memory is exported to user * applications, agp_dealloc_mem will fail. */ if (agp_dealloc_mem(softstate, &softstate->asoft_table[key])) ret = -1; } } return (ret); } /* * pfn2gartentry() * * Description: * This function converts a physical address to GART entry. * For AMD64, hardware only support addresses below 40bits, * about 1024G physical address, so the largest pfn * number is below 28 bits. Please refer to GART and GTT entry * format table in agpdefs.h for entry format. Intel IGD only * only supports GTT entry below 1G. Intel AGP only supports * GART entry below 4G. * * Arguments: * arc_type system agp arc type * pfn page frame number * itemv the entry item to be returned * Returns: * -1 not a invalid page frame * 0 conversion success */ static int pfn2gartentry(agp_arc_type_t arc_type, pfn_t pfn, uint32_t *itemv) { uint64_t paddr; paddr = pfn<> 20; value1 <<= 4; value2 = (uint32_t)pfn << 12; *itemv = value1 | value2 | AMD64_ENTRY_VALID; break; } case ARC_IGD810: if ((paddr & ~I810_POINTER_MASK) != 0) { AGPDB_PRINT2((CE_WARN, "Intel i810 only support 30 bits")); return (-1); } break; case ARC_IGD830: if ((paddr & ~GTT_POINTER_MASK) != 0) { AGPDB_PRINT2((CE_WARN, "Intel IGD only support 32 bits")); return (-1); } break; default: AGPDB_PRINT2((CE_WARN, "pfn2gartentry: arc type = %d, not support", arc_type)); return (-1); } return (0); } /* * Check allocated physical pages validity, only called in DEBUG * mode. */ static int agp_check_pfns(agp_arc_type_t arc_type, pfn_t *pfnarray, int items) { int count; uint32_t ret; for (count = 0; count < items; count++) { if (pfn2gartentry(arc_type, pfnarray[count], &ret)) break; } if (count < items) return (-1); else return (0); } /* * kmem_getpfns() * * Description: * This function gets page frame numbers from dma handle. * * Arguments: * dma_handle dma hanle allocated by ddi_dma_alloc_handle * dma_cookip dma cookie pointer * cookies_num cookies number * pfnarray array to store page frames * * Returns: * 0 success */ static int kmem_getpfns( ddi_dma_handle_t dma_handle, ddi_dma_cookie_t *dma_cookiep, int cookies_num, pfn_t *pfnarray) { int num_cookies; int index = 0; num_cookies = cookies_num; while (num_cookies > 0) { uint64_t ck_startaddr, ck_length, ck_end; ck_startaddr = dma_cookiep->dmac_address; ck_length = dma_cookiep->dmac_size; ck_end = ck_startaddr + ck_length; while (ck_startaddr < ck_end) { pfnarray[index] = (pfn_t)ck_startaddr >> AGP_PAGE_SHIFT; ck_startaddr += AGP_PAGE_SIZE; index++; } num_cookies--; if (num_cookies > 0) { ddi_dma_nextcookie(dma_handle, dma_cookiep); } } return (0); } static int copyinfo(agpgart_softstate_t *softstate, agp_info_t *info) { switch (softstate->asoft_devreg.agprd_arctype) { case ARC_IGD810: case ARC_IGD830: info->agpi_version.agpv_major = 0; info->agpi_version.agpv_minor = 0; info->agpi_devid = softstate->asoft_info.agpki_mdevid; info->agpi_mode = 0; break; case ARC_INTELAGP: case ARC_AMD64AGP: info->agpi_version = softstate->asoft_info.agpki_tver; info->agpi_devid = softstate->asoft_info.agpki_tdevid; info->agpi_mode = softstate->asoft_info.agpki_tstatus; break; case ARC_AMD64NOAGP: break; default: AGPDB_PRINT2((CE_WARN, "copyinfo: UNKNOW ARC")); return (-1); } /* * 64bit->32bit conversion possible */ info->agpi_aperbase = softstate->asoft_info.agpki_aperbase; info->agpi_apersize = softstate->asoft_info.agpki_apersize; info->agpi_pgtotal = softstate->asoft_pgtotal; info->agpi_pgsystem = info->agpi_pgtotal; info->agpi_pgused = softstate->asoft_pgused; return (0); } static uint32_t agp_v2_setup(uint32_t tstatus, uint32_t mstatus, uint32_t mode) { uint32_t cmd; int rq, sba, over4g, fw, rate; /* * tstatus: target device status * mstatus: master device status * mode: the agp mode to be sent */ /* * RQ - Request Queue size * set RQ to the min of mode and tstatus * if mode set a RQ larger than hardware can support, * use the max RQ which hardware can support. * tstatus & AGPSTAT_RQ_MASK is the max RQ hardware can support * Corelogic will enqueue agp transaction */ rq = mode & AGPSTAT_RQ_MASK; if ((tstatus & AGPSTAT_RQ_MASK) < rq) rq = tstatus & AGPSTAT_RQ_MASK; /* * SBA - Sideband Addressing * * Sideband Addressing provides an additional bus to pass requests * (address and command) to the target from the master. * * set SBA if all three support it */ sba = (tstatus & AGPSTAT_SBA) & (mstatus & AGPSTAT_SBA) & (mode & AGPSTAT_SBA); /* set OVER4G if all three support it */ over4g = (tstatus & AGPSTAT_OVER4G) & (mstatus & AGPSTAT_OVER4G) & (mode & AGPSTAT_OVER4G); /* * FW - fast write * * acceleration of memory write transactions from the corelogic to the * A.G.P. master device acting like a PCI target. * * set FW if all three support it */ fw = (tstatus & AGPSTAT_FW) & (mstatus & AGPSTAT_FW) & (mode & AGPSTAT_FW); /* * figure out the max rate * AGP v2 support: 4X, 2X, 1X speed * status bit meaning * --------------------------------------------- * 7:3 others * 3 0 stand for V2 support * 0:2 001:1X, 010:2X, 100:4X * ---------------------------------------------- */ rate = (tstatus & AGPSTAT_RATE_MASK) & (mstatus & AGPSTAT_RATE_MASK) & (mode & AGPSTAT_RATE_MASK); if (rate & AGP2_RATE_4X) rate = AGP2_RATE_4X; else if (rate & AGP2_RATE_2X) rate = AGP2_RATE_2X; else rate = AGP2_RATE_1X; cmd = rq | sba | over4g | fw | rate; /* enable agp mode */ cmd |= AGPCMD_AGPEN; return (cmd); } static uint32_t agp_v3_setup(uint32_t tstatus, uint32_t mstatus, uint32_t mode) { uint32_t cmd = 0; uint32_t rq, arqsz, cal, sba, over4g, fw, rate; /* * tstatus: target device status * mstatus: master device status * mode: the agp mode to be set */ /* * RQ - Request Queue size * Set RQ to the min of mode and tstatus * If mode set a RQ larger than hardware can support, * use the max RQ which hardware can support. * tstatus & AGPSTAT_RQ_MASK is the max RQ hardware can support * Corelogic will enqueue agp transaction; */ rq = mode & AGPSTAT_RQ_MASK; if ((tstatus & AGPSTAT_RQ_MASK) < rq) rq = tstatus & AGPSTAT_RQ_MASK; /* * ARQSZ - Asynchronous Request Queue size * Set the value equal to tstatus. * Don't allow the mode register to override values */ arqsz = tstatus & AGPSTAT_ARQSZ_MASK; /* * CAL - Calibration cycle * Set to the min of tstatus and mstatus * Don't allow override by mode register */ cal = tstatus & AGPSTAT_CAL_MASK; if ((mstatus & AGPSTAT_CAL_MASK) < cal) cal = mstatus & AGPSTAT_CAL_MASK; /* * SBA - Sideband Addressing * * Sideband Addressing provides an additional bus to pass requests * (address and command) to the target from the master. * * SBA in agp v3.0 must be set */ sba = AGPCMD_SBAEN; /* GART64B is not set since no hardware supports it now */ /* Set OVER4G if all three support it */ over4g = (tstatus & AGPSTAT_OVER4G) & (mstatus & AGPSTAT_OVER4G) & (mode & AGPSTAT_OVER4G); /* * FW - fast write * * Acceleration of memory write transactions from the corelogic to the * A.G.P. master device acting like a PCI target. * * Always set FW in AGP 3.0 */ fw = (tstatus & AGPSTAT_FW) & (mstatus & AGPSTAT_FW) & (mode & AGPSTAT_FW); /* * Figure out the max rate * * AGP v3 support: 8X, 4X speed * * status bit meaning * --------------------------------------------- * 7:3 others * 3 1 stand for V3 support * 0:2 001:4X, 010:8X, 011:4X,8X * ---------------------------------------------- */ rate = (tstatus & AGPSTAT_RATE_MASK) & (mstatus & AGPSTAT_RATE_MASK) & (mode & AGPSTAT_RATE_MASK); if (rate & AGP3_RATE_8X) rate = AGP3_RATE_8X; else rate = AGP3_RATE_4X; cmd = rq | arqsz | cal | sba | over4g | fw | rate; /* Enable AGP mode */ cmd |= AGPCMD_AGPEN; return (cmd); } static int agp_setup(agpgart_softstate_t *softstate, uint32_t mode) { uint32_t tstatus, mstatus; uint32_t agp_mode; tstatus = softstate->asoft_info.agpki_tstatus; mstatus = softstate->asoft_info.agpki_mstatus; /* * There are three kinds of AGP mode. AGP mode 1.0, 2.0, 3.0 * AGP mode 2.0 is fully compatible with AGP mode 1.0, so we * only check 2.0 and 3.0 mode. AGP 3.0 device can work in * two AGP 2.0 or AGP 3.0 mode. By checking AGP status register, * we can get which mode it is working at. The working mode of * AGP master and AGP target must be consistent. That is, both * of them must work on AGP 3.0 mode or AGP 2.0 mode. */ if ((softstate->asoft_info.agpki_tver.agpv_major == 3) && (tstatus & AGPSTAT_MODE3)) { /* Master device should be 3.0 mode, too */ if ((softstate->asoft_info.agpki_mver.agpv_major != 3) || ((mstatus & AGPSTAT_MODE3) == 0)) return (EIO); agp_mode = agp_v3_setup(tstatus, mstatus, mode); /* Write to the AGPCMD register of target and master devices */ if (lyr_set_agp_cmd(agp_mode, &softstate->asoft_devreg)) return (EIO); softstate->asoft_mode = agp_mode; return (0); } /* * If agp taget device doesn't work in AGP 3.0 mode, * it must work in AGP 2.0 mode. And make sure * master device work in AGP 2.0 mode too */ if ((softstate->asoft_info.agpki_mver.agpv_major == 3) && (mstatus & AGPSTAT_MODE3)) return (EIO); agp_mode = agp_v2_setup(tstatus, mstatus, mode); if (lyr_set_agp_cmd(agp_mode, &softstate->asoft_devreg)) return (EIO); softstate->asoft_mode = agp_mode; return (0); } /* * agp_alloc_pmem() * * Description: * This function allocates physical memory for direct mapping to userland * applications. * * Arguments: * softsate driver soft state pointer * length memory size * type AGP_NORMAL: normal agp memory, AGP_PHISYCAL: specical * memory type for intel i810 IGD * * Returns: * entryp new key table entity pointer * NULL no key table slot available */ static keytable_ent_t * agp_alloc_pmem(agpgart_softstate_t *softstate, size_t length, int type) { keytable_ent_t keyentry; keytable_ent_t *entryp; ASSERT(AGP_ALIGNED(length)); bzero(&keyentry, sizeof (keytable_ent_t)); keyentry.kte_pages = AGP_BYTES2PAGES(length); keyentry.kte_type = type; keyentry.kte_memhdl = (agp_pmem_handle_t *)kmem_zalloc(sizeof (agp_pmem_handle_t), KM_SLEEP); if (devmap_pmem_alloc(length, PMEM_SLEEP, &PMEMP(keyentry.kte_memhdl)->pmem_cookie) != DDI_SUCCESS) goto err1; keyentry.kte_pfnarray = (pfn_t *)kmem_zalloc(sizeof (pfn_t) * keyentry.kte_pages, KM_SLEEP); if (devmap_pmem_getpfns( PMEMP(keyentry.kte_memhdl)->pmem_cookie, 0, keyentry.kte_pages, keyentry.kte_pfnarray) != DDI_SUCCESS) { AGPDB_PRINT2((CE_WARN, "agp_alloc_pmem: devmap_map_getpfns failed")); goto err2; } ASSERT(!agp_check_pfns(softstate->asoft_devreg.agprd_arctype, keyentry.kte_pfnarray, keyentry.kte_pages)); entryp = agp_fill_empty_keyent(softstate, &keyentry); if (!entryp) { AGPDB_PRINT2((CE_WARN, "agp_alloc_pmem: agp_fill_empty_keyent error")); goto err2; } ASSERT((entryp->kte_key >= 0) && (entryp->kte_key < AGP_MAXKEYS)); return (entryp); err2: kmem_free(keyentry.kte_pfnarray, sizeof (pfn_t) * keyentry.kte_pages); keyentry.kte_pfnarray = NULL; devmap_pmem_free(PMEMP(keyentry.kte_memhdl)->pmem_cookie); PMEMP(keyentry.kte_memhdl)->pmem_cookie = NULL; err1: kmem_free(keyentry.kte_memhdl, sizeof (agp_pmem_handle_t)); keyentry.kte_memhdl = NULL; return (NULL); } /* * agp_alloc_kmem() * * Description: * This function allocates physical memory for userland applications * by ddi interfaces. This function can only be called to allocate * small phsyical contiguous pages, usually tens of kilobytes. * * Arguments: * softsate driver soft state pointer * length memory size * * Returns: * entryp new keytable entity pointer * NULL no keytable slot available or no physical * memory available */ static keytable_ent_t * agp_alloc_kmem(agpgart_softstate_t *softstate, size_t length) { keytable_ent_t keyentry; keytable_ent_t *entryp; int ret; ASSERT(AGP_ALIGNED(length)); bzero(&keyentry, sizeof (keytable_ent_t)); keyentry.kte_pages = AGP_BYTES2PAGES(length); keyentry.kte_type = AGP_PHYSICAL; /* * Set dma_attr_sgllen to assure contiguous physical pages */ agpgart_dma_attr.dma_attr_sgllen = 1; /* 4k size pages */ keyentry.kte_memhdl = kmem_zalloc(sizeof (agp_kmem_handle_t), KM_SLEEP); if (ddi_dma_alloc_handle(softstate->asoft_dip, &agpgart_dma_attr, DDI_DMA_SLEEP, NULL, &(KMEMP(keyentry.kte_memhdl)->kmem_handle))) { AGPDB_PRINT2((CE_WARN, "agp_alloc_kmem: ddi_dma_allco_hanlde error")); goto err4; } if ((ret = ddi_dma_mem_alloc( KMEMP(keyentry.kte_memhdl)->kmem_handle, length, &gart_dev_acc_attr, DDI_DMA_CONSISTENT, DDI_DMA_SLEEP, NULL, &KMEMP(keyentry.kte_memhdl)->kmem_kvaddr, &KMEMP(keyentry.kte_memhdl)->kmem_reallen, &KMEMP(keyentry.kte_memhdl)->kmem_acchdl)) != 0) { AGPDB_PRINT2((CE_WARN, "agp_alloc_kmem: ddi_dma_mem_alloc error")); goto err3; } ret = ddi_dma_addr_bind_handle( KMEMP(keyentry.kte_memhdl)->kmem_handle, NULL, KMEMP(keyentry.kte_memhdl)->kmem_kvaddr, length, DDI_DMA_RDWR | DDI_DMA_CONSISTENT, DDI_DMA_SLEEP, NULL, &KMEMP(keyentry.kte_memhdl)->kmem_dcookie, &KMEMP(keyentry.kte_memhdl)->kmem_cookies_num); /* * Even dma_attr_sgllen = 1, ddi_dma_addr_bind_handle may return more * than one cookie, we check this in the if statement. */ if ((ret != DDI_DMA_MAPPED) || (KMEMP(keyentry.kte_memhdl)->kmem_cookies_num != 1)) { AGPDB_PRINT2((CE_WARN, "agp_alloc_kmem: can not alloc physical memory properly")); goto err2; } keyentry.kte_pfnarray = (pfn_t *)kmem_zalloc(sizeof (pfn_t) * keyentry.kte_pages, KM_SLEEP); if (kmem_getpfns( KMEMP(keyentry.kte_memhdl)->kmem_handle, &KMEMP(keyentry.kte_memhdl)->kmem_dcookie, KMEMP(keyentry.kte_memhdl)->kmem_cookies_num, keyentry.kte_pfnarray)) { AGPDB_PRINT2((CE_WARN, "agp_alloc_kmem: get pfn array error")); goto err1; } ASSERT(!agp_check_pfns(softstate->asoft_devreg.agprd_arctype, keyentry.kte_pfnarray, keyentry.kte_pages)); entryp = agp_fill_empty_keyent(softstate, &keyentry); if (!entryp) { AGPDB_PRINT2((CE_WARN, "agp_alloc_kmem: agp_fill_empty_keyent error")); goto err1; } ASSERT((entryp->kte_key >= 0) && (entryp->kte_key < AGP_MAXKEYS)); return (entryp); err1: kmem_free(keyentry.kte_pfnarray, sizeof (pfn_t) * keyentry.kte_pages); keyentry.kte_pfnarray = NULL; (void) ddi_dma_unbind_handle(KMEMP(keyentry.kte_memhdl)->kmem_handle); KMEMP(keyentry.kte_memhdl)->kmem_cookies_num = 0; err2: ddi_dma_mem_free(&KMEMP(keyentry.kte_memhdl)->kmem_acchdl); KMEMP(keyentry.kte_memhdl)->kmem_acchdl = NULL; KMEMP(keyentry.kte_memhdl)->kmem_reallen = 0; KMEMP(keyentry.kte_memhdl)->kmem_kvaddr = NULL; err3: ddi_dma_free_handle(&(KMEMP(keyentry.kte_memhdl)->kmem_handle)); KMEMP(keyentry.kte_memhdl)->kmem_handle = NULL; err4: kmem_free(keyentry.kte_memhdl, sizeof (agp_kmem_handle_t)); keyentry.kte_memhdl = NULL; return (NULL); } /* * agp_alloc_mem() * * Description: * This function allocate physical memory for userland applications, * in order to save kernel virtual space, we use the direct mapping * memory interface if it is available. * * Arguments: * st driver soft state pointer * length memory size * type AGP_NORMAL: normal agp memory, AGP_PHISYCAL: specical * memory type for intel i810 IGD * * Returns: * NULL Invalid memory type or can not allocate memory * Keytable entry pointer returned by agp_alloc_kmem or agp_alloc_pmem */ static keytable_ent_t * agp_alloc_mem(agpgart_softstate_t *st, size_t length, int type) { /* * AGP_PHYSICAL type require contiguous physical pages exported * to X drivers, like i810 HW cursor, ARGB cursor. the number of * pages needed is usuallysmall and contiguous, 4K, 16K. So we * use DDI interface to allocated such memory. And X use xsvc * drivers to map this memory into its own address space. */ ASSERT(st); switch (type) { case AGP_NORMAL: return (agp_alloc_pmem(st, length, type)); case AGP_PHYSICAL: return (agp_alloc_kmem(st, length)); default: return (NULL); } } /* * free_gart_table() * * Description: * This function frees the gart table memory allocated by driver. * Must disable gart table before calling this function. * * Arguments: * softstate driver soft state pointer * */ static void free_gart_table(agpgart_softstate_t *st) { if (st->gart_dma_handle == NULL) return; (void) ddi_dma_unbind_handle(st->gart_dma_handle); ddi_dma_mem_free(&st->gart_dma_acc_handle); st->gart_dma_acc_handle = NULL; ddi_dma_free_handle(&st->gart_dma_handle); st->gart_dma_handle = NULL; st->gart_vbase = 0; st->gart_size = 0; } /* * alloc_gart_table() * * Description: * This function allocates one physical continuous gart table. * INTEL integrated video device except i810 have their special * video bios; No need to allocate gart table for them. * * Arguments: * st driver soft state pointer * * Returns: * 0 success * -1 can not allocate gart tabl */ static int alloc_gart_table(agpgart_softstate_t *st) { int num_pages; size_t table_size; int ret = DDI_SUCCESS; ddi_dma_cookie_t cookie; uint32_t num_cookies; num_pages = AGP_MB2PAGES(st->asoft_info.agpki_apersize); /* * Only 40-bit maximum physical memory is supported by today's * AGP hardware (32-bit gart tables can hold 40-bit memory addresses). * No one supports 64-bit gart entries now, so the size of gart * entries defaults to 32-bit though AGP3.0 specifies the possibility * of 64-bit gart entries. */ table_size = num_pages * (sizeof (uint32_t)); /* * Only AMD64 can put gart table above 4G, 40 bits at maximum */ if ((st->asoft_devreg.agprd_arctype == ARC_AMD64AGP) || (st->asoft_devreg.agprd_arctype == ARC_AMD64NOAGP)) garttable_dma_attr.dma_attr_addr_hi = 0xffffffffffLL; else garttable_dma_attr.dma_attr_addr_hi = 0xffffffffU; /* Allocate physical continuous page frame for gart table */ if (ret = ddi_dma_alloc_handle(st->asoft_dip, &garttable_dma_attr, DDI_DMA_SLEEP, NULL, &st->gart_dma_handle)) { AGPDB_PRINT2((CE_WARN, "alloc_gart_table: ddi_dma_alloc_handle failed")); goto err3; } if (ret = ddi_dma_mem_alloc(st->gart_dma_handle, table_size, &gart_dev_acc_attr, DDI_DMA_CONSISTENT, DDI_DMA_SLEEP, NULL, &st->gart_vbase, &st->gart_size, &st->gart_dma_acc_handle)) { AGPDB_PRINT2((CE_WARN, "alloc_gart_table: ddi_dma_mem_alloc failed")); goto err2; } ret = ddi_dma_addr_bind_handle(st->gart_dma_handle, NULL, st->gart_vbase, table_size, DDI_DMA_RDWR | DDI_DMA_CONSISTENT, DDI_DMA_SLEEP, NULL, &cookie, &num_cookies); st->gart_pbase = cookie.dmac_address; if ((ret != DDI_DMA_MAPPED) || (num_cookies != 1)) { if (num_cookies > 1) (void) ddi_dma_unbind_handle(st->gart_dma_handle); AGPDB_PRINT2((CE_WARN, "alloc_gart_table: alloc contiguous phys memory failed")); goto err1; } return (0); err1: ddi_dma_mem_free(&st->gart_dma_acc_handle); st->gart_dma_acc_handle = NULL; err2: ddi_dma_free_handle(&st->gart_dma_handle); st->gart_dma_handle = NULL; err3: st->gart_pbase = 0; st->gart_size = 0; st->gart_vbase = 0; return (-1); } /* * agp_add_to_gart() * * Description: * This function fills the gart table entries by a given page frame number * array and set up the agp aperture page to physical memory page * translation. * Arguments: * type valid sytem arc types ARC_AMD64AGP, ARC_INTELAGP, * ARC_AMD64AGP * pfnarray allocated physical page frame number array * pg_offset agp aperture start page to be bound * entries the number of pages to be bound * dma_hdl gart table dma memory handle * tablep gart table kernel virtual address * Returns: * -1 failed * 0 success */ static int agp_add_to_gart( agp_arc_type_t type, pfn_t *pfnarray, uint32_t pg_offset, uint32_t entries, ddi_dma_handle_t dma_hdl, uint32_t *tablep) { int items = 0; uint32_t *entryp; uint32_t itemv; entryp = tablep + pg_offset; while (items < entries) { if (pfn2gartentry(type, pfnarray[items], &itemv)) break; *(entryp + items) = itemv; items++; } if (items < entries) return (-1); (void) ddi_dma_sync(dma_hdl, pg_offset * sizeof (uint32_t), entries * sizeof (uint32_t), DDI_DMA_SYNC_FORDEV); return (0); } /* * agp_bind_key() * * Description: * This function will call low level gart table access functions to * set up gart table translation. Also it will do some sanity * checking on key table entry. * * Arguments: * softstate driver soft state pointer * keyent key table entity pointer to be bound * pg_offset aperture start page to be bound * Returns: * EINVAL not a valid operation */ static int agp_bind_key(agpgart_softstate_t *softstate, keytable_ent_t *keyent, uint32_t pg_offset) { uint64_t pg_end; int ret = 0; ASSERT(keyent); ASSERT((keyent->kte_key >= 0) && (keyent->kte_key < AGP_MAXKEYS)); ASSERT(mutex_owned(&softstate->asoft_instmutex)); pg_end = pg_offset + keyent->kte_pages; if (pg_end > AGP_MB2PAGES(softstate->asoft_info.agpki_apersize)) { AGPDB_PRINT2((CE_WARN, "agp_bind_key: key=0x%x,exceed aper range", keyent->kte_key)); return (EINVAL); } if (agp_check_off(softstate->asoft_table, pg_offset, keyent->kte_pages)) { AGPDB_PRINT2((CE_WARN, "agp_bind_key: pg_offset=0x%x, pages=0x%lx overlaped", pg_offset, keyent->kte_pages)); return (EINVAL); } ASSERT(keyent->kte_pfnarray != NULL); switch (softstate->asoft_devreg.agprd_arctype) { case ARC_IGD810: case ARC_IGD830: ret = lyr_i8xx_add_to_gtt(pg_offset, keyent, &softstate->asoft_devreg); if (ret) return (EIO); break; case ARC_INTELAGP: case ARC_AMD64NOAGP: case ARC_AMD64AGP: ret = agp_add_to_gart( softstate->asoft_devreg.agprd_arctype, keyent->kte_pfnarray, pg_offset, keyent->kte_pages, softstate->gart_dma_handle, (uint32_t *)softstate->gart_vbase); if (ret) return (EINVAL); /* Flush GTLB table */ lyr_flush_gart_cache(&softstate->asoft_devreg); break; default: AGPDB_PRINT2((CE_WARN, "agp_bind_key: arc type = 0x%x unsupported", softstate->asoft_devreg.agprd_arctype)); return (EINVAL); } return (0); } static int agpgart_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) { int instance; agpgart_softstate_t *softstate; if (cmd != DDI_ATTACH) { AGPDB_PRINT2((CE_WARN, "agpgart_attach: only attach op supported")); return (DDI_FAILURE); } instance = ddi_get_instance(dip); if (ddi_soft_state_zalloc(agpgart_glob_soft_handle, instance) != DDI_SUCCESS) { AGPDB_PRINT2((CE_WARN, "agpgart_attach: soft state zalloc failed")); goto err1; } softstate = ddi_get_soft_state(agpgart_glob_soft_handle, instance); mutex_init(&softstate->asoft_instmutex, NULL, MUTEX_DRIVER, NULL); softstate->asoft_dip = dip; /* * Allocate LDI identifier for agpgart driver * Agpgart driver is the kernel consumer */ if (ldi_ident_from_dip(dip, &softstate->asoft_li)) { AGPDB_PRINT2((CE_WARN, "agpgart_attach: LDI indentifier allcation failed")); goto err2; } softstate->asoft_devreg.agprd_arctype = ARC_UNKNOWN; /* Install agp kstat */ if (agp_init_kstats(softstate)) { AGPDB_PRINT2((CE_WARN, "agpgart_attach: init kstats error")); goto err3; } /* * devfs will create /dev/agpgart * and /devices/agpgart:agpgart */ if (ddi_create_minor_node(dip, AGPGART_DEVNODE, S_IFCHR, AGP_INST2MINOR(instance), DDI_NT_AGP_PSEUDO, 0)) { AGPDB_PRINT2((CE_WARN, "agpgart_attach: Can not create minor node")); goto err4; } softstate->asoft_table = kmem_zalloc( AGP_MAXKEYS * (sizeof (keytable_ent_t)), KM_SLEEP); return (DDI_SUCCESS); err4: agp_fini_kstats(softstate); err3: ldi_ident_release(softstate->asoft_li); err2: ddi_soft_state_free(agpgart_glob_soft_handle, instance); err1: return (DDI_FAILURE); } static int agpgart_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) { int instance; agpgart_softstate_t *st; instance = ddi_get_instance(dip); st = ddi_get_soft_state(agpgart_glob_soft_handle, instance); if (cmd != DDI_DETACH) return (DDI_FAILURE); /* * Caller should free all the memory allocated explicitly. * We release the memory allocated by caller which is not * properly freed. mutex_enter here make sure assertion on * softstate mutex success in agp_dealloc_mem. */ mutex_enter(&st->asoft_instmutex); if (agp_del_allkeys(st)) { AGPDB_PRINT2((CE_WARN, "agpgart_detach: agp_del_allkeys err")); AGPDB_PRINT2((CE_WARN, "you might free agp memory exported to your applications")); mutex_exit(&st->asoft_instmutex); return (DDI_FAILURE); } mutex_exit(&st->asoft_instmutex); if (st->asoft_table) { kmem_free(st->asoft_table, AGP_MAXKEYS * (sizeof (keytable_ent_t))); st->asoft_table = 0; } ddi_remove_minor_node(dip, AGPGART_DEVNODE); agp_fini_kstats(st); ldi_ident_release(st->asoft_li); mutex_destroy(&st->asoft_instmutex); ddi_soft_state_free(agpgart_glob_soft_handle, instance); return (DDI_SUCCESS); } /*ARGSUSED*/ static int agpgart_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **resultp) { agpgart_softstate_t *st; int instance, rval = DDI_FAILURE; dev_t dev; switch (cmd) { case DDI_INFO_DEVT2DEVINFO: dev = (dev_t)arg; instance = AGP_DEV2INST(dev); st = ddi_get_soft_state(agpgart_glob_soft_handle, instance); if (st != NULL) { mutex_enter(&st->asoft_instmutex); *resultp = st->asoft_dip; mutex_exit(&st->asoft_instmutex); rval = DDI_SUCCESS; } else *resultp = NULL; break; case DDI_INFO_DEVT2INSTANCE: dev = (dev_t)arg; instance = AGP_DEV2INST(dev); *resultp = (void *)(uintptr_t)instance; rval = DDI_SUCCESS; break; default: break; } return (rval); } /* * agpgart_open() * * Description: * This function is the driver open entry point. If it is the * first time the agpgart driver is opened, the driver will * open other agp related layered drivers and set up the agpgart * table properly. * * Arguments: * dev device number pointer * openflags open flags * otyp OTYP_BLK, OTYP_CHR * credp user's credential's struct pointer * * Returns: * ENXIO operation error * EAGAIN resoure temporarily unvailable * 0 success */ /*ARGSUSED*/ static int agpgart_open(dev_t *dev, int openflags, int otyp, cred_t *credp) { int instance = AGP_DEV2INST(*dev); agpgart_softstate_t *softstate; int rc = 0; softstate = ddi_get_soft_state(agpgart_glob_soft_handle, instance); if (softstate == NULL) { AGPDB_PRINT2((CE_WARN, "agpgart_open: get soft state err")); return (ENXIO); } mutex_enter(&softstate->asoft_instmutex); if (softstate->asoft_opened) { softstate->asoft_opened++; mutex_exit(&softstate->asoft_instmutex); return (0); } /* * The driver is opened first time, so we initialize layered * driver interface and softstate member here. */ softstate->asoft_pgused = 0; if (lyr_init(&softstate->asoft_devreg, softstate->asoft_li)) { AGPDB_PRINT2((CE_WARN, "agpgart_open: lyr_init failed")); mutex_exit(&softstate->asoft_instmutex); return (EAGAIN); } /* Call into layered driver */ if (lyr_get_info(&softstate->asoft_info, &softstate->asoft_devreg)) { AGPDB_PRINT2((CE_WARN, "agpgart_open: lyr_get_info error")); lyr_end(&softstate->asoft_devreg); mutex_exit(&softstate->asoft_instmutex); return (EIO); } /* * BIOS already set up gtt table for ARC_IGD830 */ if (IS_INTEL_830(softstate->asoft_devreg.agprd_arctype)) { softstate->asoft_opened++; softstate->asoft_pgtotal = get_max_pages(softstate->asoft_info.agpki_apersize); if (lyr_config_devices(&softstate->asoft_devreg)) { AGPDB_PRINT2((CE_WARN, "agpgart_open: lyr_config_devices error")); lyr_end(&softstate->asoft_devreg); mutex_exit(&softstate->asoft_instmutex); return (EIO); } mutex_exit(&softstate->asoft_instmutex); return (0); } rc = alloc_gart_table(softstate); /* * Allocate physically contiguous pages for AGP arc or * i810 arc. If failed, divide aper_size by 2 to * reduce gart table size until 4 megabytes. This * is just a workaround for systems with very few * physically contiguous memory. */ if (rc) { while ((softstate->asoft_info.agpki_apersize >= 4) && (alloc_gart_table(softstate))) { softstate->asoft_info.agpki_apersize >>= 1; } if (softstate->asoft_info.agpki_apersize >= 4) rc = 0; } if (rc != 0) { AGPDB_PRINT2((CE_WARN, "agpgart_open: alloc gart table failed")); lyr_end(&softstate->asoft_devreg); mutex_exit(&softstate->asoft_instmutex); return (EAGAIN); } softstate->asoft_pgtotal = get_max_pages(softstate->asoft_info.agpki_apersize); /* * BIOS doesn't initialize GTT for i810, * So i810 GTT must be created by driver. * * Set up gart table and enable it. */ if (lyr_set_gart_addr(softstate->gart_pbase, &softstate->asoft_devreg)) { AGPDB_PRINT2((CE_WARN, "agpgart_open: set gart table addr failed")); free_gart_table(softstate); lyr_end(&softstate->asoft_devreg); mutex_exit(&softstate->asoft_instmutex); return (EIO); } if (lyr_config_devices(&softstate->asoft_devreg)) { AGPDB_PRINT2((CE_WARN, "agpgart_open: lyr_config_devices failed")); free_gart_table(softstate); lyr_end(&softstate->asoft_devreg); mutex_exit(&softstate->asoft_instmutex); return (EIO); } softstate->asoft_opened++; mutex_exit(&softstate->asoft_instmutex); return (0); } /* * agpgart_close() * * Description: * agpgart_close will release resources allocated in the first open * and close other open layered drivers. Also it frees the memory * allocated by ioctls. * * Arguments: * dev device number * flag file status flag * otyp OTYP_BLK, OTYP_CHR * credp user's credential's struct pointer * * Returns: * ENXIO not an error, to support "deferred attach" * 0 success */ /*ARGSUSED*/ static int agpgart_close(dev_t dev, int flag, int otyp, cred_t *credp) { int instance = AGP_DEV2INST(dev); agpgart_softstate_t *softstate; softstate = ddi_get_soft_state(agpgart_glob_soft_handle, instance); if (softstate == NULL) { AGPDB_PRINT2((CE_WARN, "agpgart_close: get soft state err")); return (ENXIO); } mutex_enter(&softstate->asoft_instmutex); ASSERT(softstate->asoft_opened); /* * If the last process close this device is not the controlling * process, also release the control over agpgart driver here if the * the controlling process fails to release the control before it * close the driver. */ if (softstate->asoft_acquired == 1) { AGPDB_PRINT2((CE_WARN, "agpgart_close: auto release control over driver")); release_control(softstate); } if (lyr_unconfig_devices(&softstate->asoft_devreg)) { AGPDB_PRINT2((CE_WARN, "agpgart_close: lyr_unconfig_device error")); mutex_exit(&softstate->asoft_instmutex); return (EIO); } softstate->asoft_agpen = 0; if (!IS_INTEL_830(softstate->asoft_devreg.agprd_arctype)) { free_gart_table(softstate); } lyr_end(&softstate->asoft_devreg); /* * This statement must be positioned before agp_del_allkeys * agp_dealloc_mem indirectly called by agp_del_allkeys * will test this variable. */ softstate->asoft_opened = 0; /* * Free the memory allocated by user applications which * was never deallocated. */ (void) agp_del_allkeys(softstate); mutex_exit(&softstate->asoft_instmutex); return (0); } static int ioctl_agpgart_info(agpgart_softstate_t *softstate, void *arg, int flags) { agp_info_t infostruct; #ifdef _MULTI_DATAMODEL agp_info32_t infostruct32; #endif bzero(&infostruct, sizeof (agp_info_t)); #ifdef _MULTI_DATAMODEL bzero(&infostruct32, sizeof (agp_info32_t)); if (ddi_model_convert_from(flags & FMODELS) == DDI_MODEL_ILP32) { if (copyinfo(softstate, &infostruct)) return (EINVAL); agpinfo_default_to_32(infostruct, infostruct32); if (ddi_copyout(&infostruct32, arg, sizeof (agp_info32_t), flags) != 0) return (EFAULT); return (0); } #endif /* _MULTI_DATAMODEL */ if (copyinfo(softstate, &infostruct)) return (EINVAL); if (ddi_copyout(&infostruct, arg, sizeof (agp_info_t), flags) != 0) { return (EFAULT); } return (0); } static int ioctl_agpgart_acquire(agpgart_softstate_t *st) { if (st->asoft_acquired) { AGPDB_PRINT2((CE_WARN, "ioctl_acquire: already acquired")); return (EBUSY); } acquire_control(st); return (0); } static int ioctl_agpgart_release(agpgart_softstate_t *st) { if (is_controlling_proc(st) < 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_release: not a controlling process")); return (EPERM); } release_control(st); return (0); } static int ioctl_agpgart_setup(agpgart_softstate_t *st, void *arg, int flags) { agp_setup_t data; int rc = 0; if (is_controlling_proc(st) < 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_setup: not a controlling process")); return (EPERM); } if (!IS_TRUE_AGP(st->asoft_devreg.agprd_arctype)) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_setup: no true agp bridge")); return (EINVAL); } if (ddi_copyin(arg, &data, sizeof (agp_setup_t), flags) != 0) return (EFAULT); if (rc = agp_setup(st, data.agps_mode)) return (rc); /* Store agp mode status for kstat */ st->asoft_agpen = 1; return (0); } static int ioctl_agpgart_alloc(agpgart_softstate_t *st, void *arg, int flags) { agp_allocate_t alloc_info; keytable_ent_t *entryp; size_t length; uint64_t pg_num; if (is_controlling_proc(st) < 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_alloc: not a controlling process")); return (EPERM); } if (ddi_copyin(arg, &alloc_info, sizeof (agp_allocate_t), flags) != 0) { return (EFAULT); } pg_num = st->asoft_pgused + alloc_info.agpa_pgcount; if (pg_num > st->asoft_pgtotal) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_alloc: exceeding the memory pages limit")); AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_alloc: request %x pages failed", alloc_info.agpa_pgcount)); AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_alloc: pages used %x total is %x", st->asoft_pgused, st->asoft_pgtotal)); return (EINVAL); } length = AGP_PAGES2BYTES(alloc_info.agpa_pgcount); entryp = agp_alloc_mem(st, length, alloc_info.agpa_type); if (!entryp) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_alloc: allocate 0x%lx bytes failed", length)); return (ENOMEM); } ASSERT((entryp->kte_key >= 0) && (entryp->kte_key < AGP_MAXKEYS)); alloc_info.agpa_key = entryp->kte_key; if (alloc_info.agpa_type == AGP_PHYSICAL) { alloc_info.agpa_physical = (uint32_t)(entryp->kte_pfnarray[0] << AGP_PAGE_SHIFT); } /* Update the memory pagse used */ st->asoft_pgused += alloc_info.agpa_pgcount; if (ddi_copyout(&alloc_info, arg, sizeof (agp_allocate_t), flags) != 0) { return (EFAULT); } return (0); } static int ioctl_agpgart_dealloc(agpgart_softstate_t *st, intptr_t arg) { int key; keytable_ent_t *keyent; if (is_controlling_proc(st) < 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_dealloc: not a controlling process")); return (EPERM); } key = (int)arg; if ((key >= AGP_MAXKEYS) || key < 0) { return (EINVAL); } keyent = &st->asoft_table[key]; if (!keyent->kte_memhdl) { return (EINVAL); } if (agp_dealloc_mem(st, keyent)) return (EINVAL); /* Update the memory pages used */ st->asoft_pgused -= keyent->kte_pages; bzero(keyent, sizeof (keytable_ent_t)); return (0); } static int ioctl_agpgart_bind(agpgart_softstate_t *st, void *arg, int flags) { agp_bind_t bind_info; keytable_ent_t *keyent; int key; uint32_t pg_offset; int retval = 0; if (is_controlling_proc(st) < 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_bind: not a controlling process")); return (EPERM); } if (ddi_copyin(arg, &bind_info, sizeof (agp_bind_t), flags) != 0) { return (EFAULT); } key = bind_info.agpb_key; if ((key >= AGP_MAXKEYS) || key < 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_bind: invalid key")); return (EINVAL); } if (IS_INTEL_830(st->asoft_devreg.agprd_arctype)) { if (AGP_PAGES2KB(bind_info.agpb_pgstart) < st->asoft_info.agpki_presize) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_bind: bind to prealloc area")); return (EINVAL); } } pg_offset = bind_info.agpb_pgstart; keyent = &st->asoft_table[key]; if (!keyent->kte_memhdl) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_bind: Key = 0x%x can't get keyenty", key)); return (EINVAL); } if (keyent->kte_bound != 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_bind: Key = 0x%x already bound", key)); return (EINVAL); } retval = agp_bind_key(st, keyent, pg_offset); if (retval == 0) { keyent->kte_pgoff = pg_offset; keyent->kte_bound = 1; } return (retval); } static int ioctl_agpgart_unbind(agpgart_softstate_t *st, void *arg, int flags) { int key, retval = 0; agp_unbind_t unbindinfo; keytable_ent_t *keyent; if (is_controlling_proc(st) < 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_bind: not a controlling process")); return (EPERM); } if (ddi_copyin(arg, &unbindinfo, sizeof (unbindinfo), flags) != 0) { return (EFAULT); } key = unbindinfo.agpu_key; if ((key >= AGP_MAXKEYS) || key < 0) { AGPDB_PRINT2((CE_WARN, "ioctl_agpgart_unbind: invalid key")); return (EINVAL); } keyent = &st->asoft_table[key]; if (!keyent->kte_bound) { return (EINVAL); } if ((retval = agp_unbind_key(st, keyent)) != 0) return (retval); return (0); } /*ARGSUSED*/ static int agpgart_ioctl(dev_t dev, int cmd, intptr_t intarg, int flags, cred_t *credp, int *rvalp) { int instance; int retval = 0; void *arg = (void*)intarg; agpgart_softstate_t *softstate; instance = AGP_DEV2INST(dev); softstate = ddi_get_soft_state(agpgart_glob_soft_handle, instance); if (softstate == NULL) { AGPDB_PRINT2((CE_WARN, "agpgart_ioctl: get soft state err")); return (ENXIO); } if ((cmd != AGPIOC_INFO) && secpolicy_gart_access(credp)) { AGPDB_PRINT2((CE_WARN, "agpgart_ioctl: permission denied")); return (EPERM); } mutex_enter(&softstate->asoft_instmutex); switch (cmd) { case AGPIOC_INFO: retval = ioctl_agpgart_info(softstate, arg, flags); break; case AGPIOC_ACQUIRE: retval = ioctl_agpgart_acquire(softstate); break; case AGPIOC_RELEASE: retval = ioctl_agpgart_release(softstate); break; case AGPIOC_SETUP: retval = ioctl_agpgart_setup(softstate, arg, flags); break; case AGPIOC_ALLOCATE: retval = ioctl_agpgart_alloc(softstate, arg, flags); break; case AGPIOC_DEALLOCATE: retval = ioctl_agpgart_dealloc(softstate, intarg); break; case AGPIOC_BIND: retval = ioctl_agpgart_bind(softstate, arg, flags); break; case AGPIOC_UNBIND: retval = ioctl_agpgart_unbind(softstate, arg, flags); break; default: AGPDB_PRINT2((CE_WARN, "agpgart_ioctl: wrong argument")); retval = ENXIO; break; } mutex_exit(&softstate->asoft_instmutex); return (retval); } static int agpgart_segmap(dev_t dev, off_t off, struct as *asp, caddr_t *addrp, off_t len, unsigned int prot, unsigned int maxprot, unsigned int flags, cred_t *credp) { struct agpgart_softstate *softstate; int instance; int rc = 0; instance = AGP_DEV2INST(dev); softstate = ddi_get_soft_state(agpgart_glob_soft_handle, instance); if (softstate == NULL) { AGPDB_PRINT2((CE_WARN, "agpgart_segmap: get soft state err")); return (ENXIO); } if (!AGP_ALIGNED(len)) return (EINVAL); mutex_enter(&softstate->asoft_instmutex); /* * Process must have gart map privilege or gart access privilege * to map agp memory. */ if (secpolicy_gart_map(credp)) { mutex_exit(&softstate->asoft_instmutex); AGPDB_PRINT2((CE_WARN, "agpgart_segmap: permission denied")); return (EPERM); } rc = devmap_setup(dev, (offset_t)off, asp, addrp, (size_t)len, prot, maxprot, flags, credp); mutex_exit(&softstate->asoft_instmutex); return (rc); } /*ARGSUSED*/ static int agpgart_devmap(dev_t dev, devmap_cookie_t cookie, offset_t offset, size_t len, size_t *mappedlen, uint_t model) { struct agpgart_softstate *softstate; int instance, status; struct keytable_ent *mementry; offset_t local_offset; instance = AGP_DEV2INST(dev); softstate = ddi_get_soft_state(agpgart_glob_soft_handle, instance); if (softstate == NULL) { AGPDB_PRINT2((CE_WARN, "agpgart_devmap: get soft state err")); return (ENXIO); } if (offset > MB2BYTES(softstate->asoft_info.agpki_apersize)) { AGPDB_PRINT2((CE_WARN, "agpgart_devmap: offset is too large")); return (EINVAL); } /* * Can not find any memory now, so fail. */ mementry = agp_find_bound_keyent(softstate, AGP_BYTES2PAGES(offset)); if (mementry == NULL) { AGPDB_PRINT2((CE_WARN, "agpgart_devmap: can not find the proper keyent")); return (EINVAL); } local_offset = offset - AGP_PAGES2BYTES(mementry->kte_pgoff); if (len > (AGP_PAGES2BYTES(mementry->kte_pages) - local_offset)) { len = AGP_PAGES2BYTES(mementry->kte_pages) - local_offset; } switch (mementry->kte_type) { case AGP_NORMAL: status = devmap_pmem_setup(cookie, softstate->asoft_dip, &agp_devmap_cb, PMEMP(mementry->kte_memhdl)->pmem_cookie, local_offset, len, PROT_ALL, (DEVMAP_DEFAULTS|IOMEM_DATA_UC_WR_COMBINE), &mem_dev_acc_attr); break; default: AGPDB_PRINT2((CE_WARN, "agpgart_devmap: not a valid memory type")); return (EINVAL); } if (status == 0) { *mappedlen = len; } else { *mappedlen = 0; AGPDB_PRINT2((CE_WARN, "agpgart_devmap: devmap interface failed")); return (EINVAL); } return (0); } static struct cb_ops agpgart_cb_ops = { agpgart_open, /* open() */ agpgart_close, /* close() */ nodev, /* strategy() */ nodev, /* print routine */ nodev, /* no dump routine */ nodev, /* read() */ nodev, /* write() */ agpgart_ioctl, /* agpgart_ioctl */ agpgart_devmap, /* devmap routine */ nodev, /* no longer use mmap routine */ agpgart_segmap, /* system segmap routine */ nochpoll, /* no chpoll routine */ ddi_prop_op, /* system prop operations */ 0, /* not a STREAMS driver */ D_DEVMAP | D_MP, /* safe for multi-thread/multi-processor */ CB_REV, /* cb_ops version? */ nodev, /* cb_aread() */ nodev, /* cb_awrite() */ }; static struct dev_ops agpgart_ops = { DEVO_REV, /* devo_rev */ 0, /* devo_refcnt */ agpgart_getinfo, /* devo_getinfo */ nulldev, /* devo_identify */ nulldev, /* devo_probe */ agpgart_attach, /* devo_attach */ agpgart_detach, /* devo_detach */ nodev, /* devo_reset */ &agpgart_cb_ops, /* devo_cb_ops */ (struct bus_ops *)0, /* devo_bus_ops */ NULL, /* devo_power */ }; static struct modldrv modldrv = { &mod_driverops, "AGP driver v%I%", &agpgart_ops, }; static struct modlinkage modlinkage = { MODREV_1, /* MODREV_1 is indicated by manual */ {&modldrv, NULL, NULL, NULL} }; static void *agpgart_glob_soft_handle; int _init(void) { int ret = DDI_SUCCESS; ret = ddi_soft_state_init(&agpgart_glob_soft_handle, sizeof (agpgart_softstate_t), AGPGART_MAX_INSTANCES); if (ret != 0) { AGPDB_PRINT2((CE_WARN, "_init: soft state init error code=0x%x", ret)); return (ret); } if ((ret = mod_install(&modlinkage)) != 0) { AGPDB_PRINT2((CE_WARN, "_init: mod install error code=0x%x", ret)); ddi_soft_state_fini(&agpgart_glob_soft_handle); return (ret); } return (DDI_SUCCESS); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } int _fini(void) { int ret; if ((ret = mod_remove(&modlinkage)) == 0) { ddi_soft_state_fini(&agpgart_glob_soft_handle); } return (ret); }