1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * BSD LICENSE 5 * 6 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * * Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * * Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #include <dev/isci/isci.h> 35 #include <vm/vm.h> 36 #include <vm/pmap.h> 37 #include <machine/vmparam.h> 38 #include <machine/pc/bios.h> 39 #include <dev/isci/scil/scu_bios_definitions.h> 40 41 struct pcir_header 42 { 43 uint32_t signature; 44 uint16_t vendor_id; 45 uint16_t device_id; 46 uint16_t reserved; 47 uint16_t struct_length; 48 uint8_t struct_revision; 49 uint8_t cc_interface; 50 uint8_t cc_subclass; 51 uint8_t cc_baseclass; 52 uint16_t image_length; 53 uint16_t code_revision; 54 uint8_t code_type; 55 uint8_t indicator; 56 uint16_t reserved1; 57 }; 58 59 struct rom_header 60 { 61 uint8_t signature_byte[2]; 62 uint8_t rom_length; 63 uint8_t jmp_code; 64 uint16_t entry_address; 65 uint8_t reserved[0x12]; 66 uint16_t pcir_pointer; 67 uint16_t pnp_pointer; 68 }; 69 70 struct oem_parameters_table 71 { 72 uint8_t signature[4]; /* "$OEM" */ 73 struct revision 74 { 75 uint16_t major:8; /* bits [7:0] */ 76 uint16_t minor:8; /* bits [8:15] */ 77 } revision; 78 79 uint16_t length; 80 uint8_t checksum; 81 uint8_t reserved1; 82 uint16_t reserved2; 83 uint8_t data[1]; 84 }; 85 86 void 87 isci_get_oem_parameters(struct isci_softc *isci) 88 { 89 uint32_t OROM_PHYSICAL_ADDRESS_START = 0xC0000; 90 uint32_t OROM_SEARCH_LENGTH = 0x30000; 91 uint16_t OROM_SIGNATURE = 0xAA55; 92 uint32_t OROM_SIZE = 512; 93 uint8_t *orom_start = 94 (uint8_t *)BIOS_PADDRTOVADDR(OROM_PHYSICAL_ADDRESS_START); 95 uint32_t offset = 0; 96 97 while (offset < OROM_SEARCH_LENGTH) { 98 99 /* Look for the OROM signature at the beginning of every 100 * 512-byte block in the OROM region 101 */ 102 if (*(uint16_t*)(orom_start + offset) == OROM_SIGNATURE) { 103 uint32_t *rom; 104 struct rom_header *rom_header; 105 struct pcir_header *pcir_header; 106 uint16_t vendor_id = isci->pci_common_header.vendor_id; 107 uint16_t device_id = isci->pci_common_header.device_id; 108 109 rom = (uint32_t *)(orom_start + offset); 110 rom_header = (struct rom_header *)rom; 111 pcir_header = (struct pcir_header *) 112 ((uint8_t*)rom + rom_header->pcir_pointer); 113 114 /* OROM signature was found. Now check if the PCI 115 * device and vendor IDs match. 116 */ 117 if (pcir_header->vendor_id == vendor_id && 118 pcir_header->device_id == device_id) 119 { 120 /* OROM for this PCI device was found. Search 121 * this 512-byte block for the $OEM string, 122 * which will mark the beginning of the OEM 123 * parameter block. 124 */ 125 uint8_t oem_sig[4] = {'$', 'O', 'E', 'M'}; 126 int dword_index; 127 128 for (dword_index = 0; 129 dword_index < OROM_SIZE/sizeof(uint32_t); 130 dword_index++) 131 if (rom[dword_index] == *(uint32_t *)oem_sig) { 132 /* $OEM signature string was found. Now copy the OEM parameter block 133 * into the struct ISCI_CONTROLLER objects. After the controllers are 134 * constructed, we will pass this OEM parameter data to the SCI core 135 * controller. 136 */ 137 struct oem_parameters_table *oem = 138 (struct oem_parameters_table *)&rom[dword_index]; 139 SCI_BIOS_OEM_PARAM_BLOCK_T *oem_data = 140 (SCI_BIOS_OEM_PARAM_BLOCK_T *)oem->data; 141 int index; 142 143 isci->oem_parameters_found = TRUE; 144 isci_log_message(1, "ISCI", "oem_data->header.num_elements = %d\n", 145 oem_data->header.num_elements); 146 147 for (index = 0; index < oem_data->header.num_elements; index++) 148 { 149 memcpy(&isci->controllers[index].oem_parameters.sds1, 150 &oem_data->controller_element[index], 151 sizeof(SCIC_SDS_OEM_PARAMETERS_T)); 152 153 isci_log_message(1, "ISCI", "OEM Parameter Data for controller %d\n", 154 index); 155 156 for (int i = 0; i < sizeof(SCIC_SDS_OEM_PARAMETERS_T); i++) { 157 uint8_t val = ((uint8_t *)&oem_data->controller_element[index])[i]; 158 isci_log_message(1, "ISCI", "%02x ", val); 159 } 160 isci_log_message(1, "ISCI", "\n"); 161 isci->controllers[index].oem_parameters_version = oem_data->header.version; 162 } 163 } 164 165 /* No need to continue searching for another 166 * OROM that matches this PCI device, so return 167 * immediately. 168 */ 169 return; 170 } 171 } 172 173 offset += OROM_SIZE; 174 } 175 } 176