1d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams/* 2d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * This file is provided under a dual BSD/GPLv2 license. When using or 3d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * redistributing this file, you may do so under either license. 4d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * 5d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * GPL LICENSE SUMMARY 6d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * 7d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 8d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * 9d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * This program is free software; you can redistribute it and/or modify 10d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * it under the terms of version 2 of the GNU General Public License as 11d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * published by the Free Software Foundation. 12d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * 13d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * This program is distributed in the hope that it will be useful, but 14d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * WITHOUT ANY WARRANTY; without even the implied warranty of 15d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * General Public License for more details. 17d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * 18d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * You should have received a copy of the GNU General Public License 19d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * along with this program; if not, write to the Free Software 20d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 21d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * The full GNU General Public License is included in this distribution 22d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams * in the file called LICENSE.GPL. 23d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams */ 24d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 25d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams/* probe_roms - scan for oem parameters */ 26d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 27d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams#include <linux/kernel.h> 28d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams#include <linux/firmware.h> 29d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams#include <linux/uaccess.h> 308db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang#include <linux/efi.h> 31d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams#include <asm/probe_roms.h> 32d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 33d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams#include "isci.h" 34d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams#include "task.h" 35d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams#include "probe_roms.h" 36d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 37a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomleystatic efi_char16_t isci_efivar_name[] = { 38a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley 'R', 's', 't', 'S', 'c', 'u', 'O' 39a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley}; 408db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 41d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williamsstruct isci_orom *isci_request_oprom(struct pci_dev *pdev) 42d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams{ 43d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams void __iomem *oprom = pci_map_biosrom(pdev); 44d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams struct isci_orom *rom = NULL; 45d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams size_t len, i; 463b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams int j; 473b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams char oem_sig[4]; 483b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams struct isci_oem_hdr oem_hdr; 493b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams u8 *tmp, sum; 50d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 51d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams if (!oprom) 52d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams return NULL; 53d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 54d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams len = pci_biosrom_size(pdev); 55d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams rom = devm_kzalloc(&pdev->dev, sizeof(*rom), GFP_KERNEL); 562e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang if (!rom) { 572e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang dev_warn(&pdev->dev, 582e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang "Unable to allocate memory for orom\n"); 592e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang return NULL; 602e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang } 61d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 623b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams for (i = 0; i < len && rom; i += ISCI_OEM_SIG_SIZE) { 633b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams memcpy_fromio(oem_sig, oprom + i, ISCI_OEM_SIG_SIZE); 64d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 653b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams /* we think we found the OEM table */ 663b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams if (memcmp(oem_sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) == 0) { 673b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams size_t copy_len; 683b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams 693b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams memcpy_fromio(&oem_hdr, oprom + i, sizeof(oem_hdr)); 703b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams 713b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams copy_len = min(oem_hdr.len - sizeof(oem_hdr), 723b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams sizeof(*rom)); 733b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams 743b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams memcpy_fromio(rom, 753b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams oprom + i + sizeof(oem_hdr), 763b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams copy_len); 773b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams 783b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams /* calculate checksum */ 793b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams tmp = (u8 *)&oem_hdr; 803b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams for (j = 0, sum = 0; j < sizeof(oem_hdr); j++, tmp++) 813b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams sum += *tmp; 823b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams 833b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams tmp = (u8 *)rom; 843b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams for (j = 0; j < sizeof(*rom); j++, tmp++) 853b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams sum += *tmp; 863b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams 873b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams if (sum != 0) { 883b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams dev_warn(&pdev->dev, 893b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams "OEM table checksum failed\n"); 903b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams continue; 913b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams } 923b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams 933b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams /* keep going if that's not the oem param table */ 943b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams if (memcmp(rom->hdr.signature, 953b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams ISCI_ROM_SIG, 963b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams ISCI_ROM_SIG_SIZE) != 0) 973b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams continue; 983b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams 993b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams dev_info(&pdev->dev, 1003b67c1f376acb24b7c6679f75275ac5a96792986Dan Williams "OEM parameter table found in OROM\n"); 101d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams break; 102d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams } 103d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams } 104d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 105d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams if (i >= len) { 106d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams dev_err(&pdev->dev, "oprom parse error\n"); 107d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams rom = NULL; 108d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams } 109d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams pci_unmap_biosrom(oprom); 110d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 111d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams return rom; 112d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams} 113d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 114d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williamsstruct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw) 115d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams{ 116d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams struct isci_orom *orom = NULL, *data; 117dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala int i, j; 118d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 119d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams if (request_firmware(&fw, ISCI_FW_NAME, &pdev->dev) != 0) 120d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams return NULL; 121d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 122d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams if (fw->size < sizeof(*orom)) 123d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams goto out; 124d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 125d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams data = (struct isci_orom *)fw->data; 126d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 127d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams if (strncmp(ISCI_ROM_SIG, data->hdr.signature, 128d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams strlen(ISCI_ROM_SIG)) != 0) 129d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams goto out; 130d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 131d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams orom = devm_kzalloc(&pdev->dev, fw->size, GFP_KERNEL); 132d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams if (!orom) 133d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams goto out; 134d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 135d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams memcpy(orom, fw->data, fw->size); 136d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 137afd13a1f2b05157c7621d87dfe89ea6ea9061bd8Jeff Skirvin if (is_c0(pdev) || is_c1(pdev)) 138dc00c8b6940aa10ab1ce6a4d10b1bfe7b848781bDan Williams goto out; 139dc00c8b6940aa10ab1ce6a4d10b1bfe7b848781bDan Williams 140dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala /* 141dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala * deprecated: override default amp_control for pre-preproduction 142dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala * silicon revisions 143dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala */ 144dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala for (i = 0; i < ARRAY_SIZE(orom->ctrl); i++) 145dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala for (j = 0; j < ARRAY_SIZE(orom->ctrl[i].phys); j++) { 146dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala orom->ctrl[i].phys[j].afe_tx_amp_control0 = 0xe7c03; 147dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala orom->ctrl[i].phys[j].afe_tx_amp_control1 = 0xe7c03; 148dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala orom->ctrl[i].phys[j].afe_tx_amp_control2 = 0xe7c03; 149dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala orom->ctrl[i].phys[j].afe_tx_amp_control3 = 0xe7c03; 150dbb0743a58825d94f1b3fdfa90a8d61dfef88f7bAdam Gruchala } 151d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams out: 152d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams release_firmware(fw); 153d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams 154d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams return orom; 155d044af17aacd03a1f4fced1af4b7570d205c8fd9Dan Williams} 1568db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 1578db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiangstatic struct efi *get_efi(void) 1588db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang{ 159bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang#ifdef CONFIG_EFI 1608db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang return &efi; 161bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang#else 1628db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang return NULL; 163bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang#endif 1648db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang} 1658db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 1668db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiangstruct isci_orom *isci_get_efi_var(struct pci_dev *pdev) 1678db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang{ 1688db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang efi_status_t status; 169bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang struct isci_orom *rom; 1702e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang struct isci_oem_hdr *oem_hdr; 1712e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang u8 *tmp, sum; 1722e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang int j; 173a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley unsigned long data_len; 174bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang u8 *efi_data; 175bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang u32 efi_attrib = 0; 1768db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 177bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang data_len = 1024; 178bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang efi_data = devm_kzalloc(&pdev->dev, data_len, GFP_KERNEL); 179bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang if (!efi_data) { 1808db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang dev_warn(&pdev->dev, 181bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang "Unable to allocate memory for EFI data\n"); 1828db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang return NULL; 1838db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang } 1848db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 185bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang rom = (struct isci_orom *)(efi_data + sizeof(struct isci_oem_hdr)); 1868db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 1878db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang if (get_efi()) 188bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang status = get_efi()->get_variable(isci_efivar_name, 189bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang &ISCI_EFI_VENDOR_GUID, 190bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang &efi_attrib, 191bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang &data_len, 192bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang efi_data); 1938db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang else 1948db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang status = EFI_NOT_FOUND; 1958db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 1962e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang if (status != EFI_SUCCESS) { 1978db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang dev_warn(&pdev->dev, 198bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang "Unable to obtain EFI var data for OEM parms\n"); 1992e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang return NULL; 2002e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang } 2012e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang 202bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang oem_hdr = (struct isci_oem_hdr *)efi_data; 2038db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 2042e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang if (memcmp(oem_hdr->sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) != 0) { 2058db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang dev_warn(&pdev->dev, 2062e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang "Invalid OEM header signature\n"); 2072e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang return NULL; 2082e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang } 2098db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang 2102e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang /* calculate checksum */ 211bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang tmp = (u8 *)efi_data; 212bf482c6069b514b7fe57a048ae1b6f11cf3bb10cDave Jiang for (j = 0, sum = 0; j < (sizeof(*oem_hdr) + sizeof(*rom)); j++, tmp++) 2132e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang sum += *tmp; 2142e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang 2152e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang if (sum != 0) { 2162e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang dev_warn(&pdev->dev, 2172e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang "OEM table checksum failed\n"); 2182e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang return NULL; 2192e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang } 2202e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang 2212e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang if (memcmp(rom->hdr.signature, 2222e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang ISCI_ROM_SIG, 2232e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang ISCI_ROM_SIG_SIZE) != 0) { 2242e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang dev_warn(&pdev->dev, 2252e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang "Invalid OEM table signature\n"); 2262e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang return NULL; 2272e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang } 2282e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang 2292e8320f751030a12efc3e64ee857bfa4647f81feDave Jiang return rom; 2308db37aabaceb3dcd18754c1e782d4474e4052c81Dave Jiang} 231