Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/isci_oem_parameters.c
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1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD: releng/8.4/sys/dev/isci/isci_oem_parameters.c 231688 2012-02-14 15:56:01Z jimharris $"); 33 34 #include <dev/isci/isci.h> 35 #include <vm/vm.h> 36 #include <vm/pmap.h> 37 #include <machine/pmap.h> 38 #include <machine/vmparam.h> 39 #include <machine/pc/bios.h> 40 #include <dev/isci/scil/scu_bios_definitions.h> 41 42 struct pcir_header 43 { 44 uint32_t signature; 45 uint16_t vendor_id; 46 uint16_t device_id; 47 uint16_t reserved; 48 uint16_t struct_length; 49 uint8_t struct_revision; 50 uint8_t cc_interface; 51 uint8_t cc_subclass; 52 uint8_t cc_baseclass; 53 uint16_t image_length; 54 uint16_t code_revision; 55 uint8_t code_type; 56 uint8_t indicator; 57 uint16_t reserved1; 58 }; 59 60 struct rom_header 61 { 62 uint8_t signature_byte[2]; 63 uint8_t rom_length; 64 uint8_t jmp_code; 65 uint16_t entry_address; 66 uint8_t reserved[0x12]; 67 uint16_t pcir_pointer; 68 uint16_t pnp_pointer; 69 }; 70 71 struct oem_parameters_table 72 { 73 uint8_t signature[4]; /* "$OEM" */ 74 struct revision 75 { 76 uint16_t major:8; /* bits [7:0] */ 77 uint16_t minor:8; /* bits [8:15] */ 78 } revision; 79 80 uint16_t length; 81 uint8_t checksum; 82 uint8_t reserved1; 83 uint16_t reserved2; 84 uint8_t data[1]; 85 }; 86 87 void 88 isci_get_oem_parameters(struct isci_softc *isci) 89 { 90 uint32_t OROM_PHYSICAL_ADDRESS_START = 0xC0000; 91 uint32_t OROM_SEARCH_LENGTH = 0x30000; 92 uint16_t OROM_SIGNATURE = 0xAA55; 93 uint32_t OROM_SIZE = 512; 94 uint8_t *orom_start = 95 (uint8_t *)BIOS_PADDRTOVADDR(OROM_PHYSICAL_ADDRESS_START); 96 uint32_t offset = 0; 97 98 while (offset < OROM_SEARCH_LENGTH) { 99 100 /* Look for the OROM signature at the beginning of every 101 * 512-byte block in the OROM region 102 */ 103 if (*(uint16_t*)(orom_start + offset) == OROM_SIGNATURE) { 104 uint32_t *rom; 105 struct rom_header *rom_header; 106 struct pcir_header *pcir_header; 107 uint16_t vendor_id = isci->pci_common_header.vendor_id; 108 uint16_t device_id = isci->pci_common_header.device_id; 109 110 rom = (uint32_t *)(orom_start + offset); 111 rom_header = (struct rom_header *)rom; 112 pcir_header = (struct pcir_header *) 113 ((uint8_t*)rom + rom_header->pcir_pointer); 114 115 /* OROM signature was found. Now check if the PCI 116 * device and vendor IDs match. 117 */ 118 if (pcir_header->vendor_id == vendor_id && 119 pcir_header->device_id == device_id) 120 { 121 /* OROM for this PCI device was found. Search 122 * this 512-byte block for the $OEM string, 123 * which will mark the beginning of the OEM 124 * parameter block. 125 */ 126 uint8_t oem_sig[4] = {'$', 'O', 'E', 'M'}; 127 int dword_index; 128 129 for (dword_index = 0; 130 dword_index < OROM_SIZE/sizeof(uint32_t); 131 dword_index++) 132 if (rom[dword_index] == *(uint32_t *)oem_sig) { 133 /* $OEM signature string was found. Now copy the OEM parameter block 134 * into the struct ISCI_CONTROLLER objects. After the controllers are 135 * constructed, we will pass this OEM parameter data to the SCI core 136 * controller. 137 */ 138 struct oem_parameters_table *oem = 139 (struct oem_parameters_table *)&rom[dword_index]; 140 SCI_BIOS_OEM_PARAM_BLOCK_T *oem_data = 141 (SCI_BIOS_OEM_PARAM_BLOCK_T *)oem->data; 142 int index; 143 144 isci->oem_parameters_found = TRUE; 145 isci_log_message(1, "ISCI", "oem_data->header.num_elements = %d\n", 146 oem_data->header.num_elements); 147 148 for (index = 0; index < oem_data->header.num_elements; index++) 149 { 150 memcpy(&isci->controllers[index].oem_parameters.sds1, 151 &oem_data->controller_element[index], 152 sizeof(SCIC_SDS_OEM_PARAMETERS_T)); 153 154 isci_log_message(1, "ISCI", "OEM Parameter Data for controller %d\n", 155 index); 156 157 for (int i = 0; i < sizeof(SCIC_SDS_OEM_PARAMETERS_T); i++) { 158 uint8_t val = ((uint8_t *)&oem_data->controller_element[index])[i]; 159 isci_log_message(1, "ISCI", "%02x ", val); 160 } 161 isci_log_message(1, "ISCI", "\n"); 162 isci->controllers[index].oem_parameters_version = oem_data->header.version; 163 } 164 } 165 166 /* No need to continue searching for another 167 * OROM that matches this PCI device, so return 168 * immediately. 169 */ 170 return; 171 } 172 } 173 174 offset += OROM_SIZE; 175 } 176 }
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