1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Library file that has miscellaneous support for npe(7d) 31 */ 32 33 #include <sys/conf.h> 34 #include <sys/pci.h> 35 #include <sys/sunndi.h> 36 #include <sys/acpi/acpi.h> 37 #include <sys/acpi/acpi_pci.h> 38 #include <sys/acpica.h> 39 #include <io/pciex/pcie_nvidia.h> 40 41 /* 42 * Prototype declaration 43 */ 44 void npe_query_acpi_mcfg(dev_info_t *dip); 45 void npe_ck804_fix_aer_ptr(ddi_acc_handle_t cfg_hdl); 46 int npe_disable_empty_bridges_workaround(dev_info_t *child); 47 48 /* 49 * Default ecfga base address 50 */ 51 int64_t npe_default_ecfga_base = 0xE0000000; 52 53 /* 54 * Query the MCFG table using ACPI. If MCFG is found, setup the 55 * 'ecfga-base-address' (Enhanced Configuration Access base address) 56 * property accordingly. Otherwise, set the value of the property 57 * to the default value. 58 */ 59 void 60 npe_query_acpi_mcfg(dev_info_t *dip) 61 { 62 MCFG_TABLE *mcfgp; 63 CFG_BASE_ADDR_ALLOC *cfg_baap; 64 char *cfg_baa_endp; 65 uint64_t ecfga_base; 66 67 /* Query the MCFG table using ACPI */ 68 if (AcpiGetFirmwareTable(MCFG_SIG, 1, ACPI_LOGICAL_ADDRESSING, 69 (ACPI_TABLE_HEADER **)&mcfgp) == AE_OK) { 70 71 cfg_baap = (CFG_BASE_ADDR_ALLOC *)mcfgp->CfgBaseAddrAllocList; 72 cfg_baa_endp = ((char *)mcfgp) + mcfgp->Length; 73 74 while ((char *)cfg_baap < cfg_baa_endp) { 75 ecfga_base = ACPI_GET_ADDRESS(cfg_baap->base_addr); 76 if (ecfga_base != (uint64_t)0) { 77 /* 78 * Setup the 'ecfga-base-address' property to 79 * the base_addr found in the MCFG and return. 80 */ 81 (void) ndi_prop_update_int64(DDI_DEV_T_NONE, 82 dip, "ecfga-base-address", ecfga_base); 83 return; 84 } 85 cfg_baap++; 86 } 87 } 88 /* 89 * If MCFG is not found or ecfga_base is not found in MCFG table, 90 * set the 'ecfga-base-address' property to the default value. 91 */ 92 (void) ndi_prop_update_int64(DDI_DEV_T_NONE, dip, 93 "ecfga-base-address", npe_default_ecfga_base); 94 } 95 96 97 /* 98 * Enable reporting of AER capability next pointer. 99 * This needs to be done only for CK8-04 devices 100 * by setting NV_XVR_VEND_CYA1 (offset 0xf40) bit 13 101 * NOTE: BIOS is disabling this, it needs to be enabled temporarily 102 */ 103 void 104 npe_ck804_fix_aer_ptr(ddi_acc_handle_t cfg_hdl) 105 { 106 ushort_t cya1; 107 108 if ((pci_config_get16(cfg_hdl, PCI_CONF_VENID) == NVIDIA_VENDOR_ID) && 109 (pci_config_get16(cfg_hdl, PCI_CONF_DEVID) == 110 NVIDIA_CK804_DEVICE_ID) && 111 (pci_config_get8(cfg_hdl, PCI_CONF_REVID) >= 112 NVIDIA_CK804_AER_VALID_REVID)) { 113 cya1 = pci_config_get16(cfg_hdl, NVIDIA_CK804_VEND_CYA1_OFF); 114 if (!(cya1 & ~NVIDIA_CK804_VEND_CYA1_ERPT_MASK)) 115 (void) pci_config_put16(cfg_hdl, 116 NVIDIA_CK804_VEND_CYA1_OFF, 117 cya1 | NVIDIA_CK804_VEND_CYA1_ERPT_VAL); 118 } 119 } 120 121 122 /* 123 * If the bridge is empty, disable it 124 */ 125 int 126 npe_disable_empty_bridges_workaround(dev_info_t *child) 127 { 128 /* 129 * Do not bind drivers to empty bridges. 130 * Fail above, if the bridge is found to be hotplug capable 131 */ 132 if (ddi_driver_major(child) == ddi_name_to_major("pcie_pci") && 133 ddi_get_child(child) == NULL && 134 ddi_prop_get_int(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, 135 "pci-hotplug-type", INBAND_HPC_NONE) == INBAND_HPC_NONE) 136 return (1); 137 138 return (0); 139 } 140