David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1 | /** |
| 2 | * @file mefirmware.c |
| 3 | * |
| 4 | * @brief Implements the firmware handling. |
| 5 | * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) |
| 6 | * @author Guenter Gebhardt |
| 7 | * @author Krzysztof Gantzke (k.gantzke@meilhaus.de) |
| 8 | */ |
| 9 | |
| 10 | /*************************************************************************** |
| 11 | * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) * |
| 12 | * Copyright (C) 2007 by Krzysztof Gantzke k.gantzke@meilhaus.de * |
| 13 | * * |
| 14 | * This program is free software; you can redistribute it and/or modify * |
| 15 | * it under the terms of the GNU General Public License as published by * |
| 16 | * the Free Software Foundation; either version 2 of the License, or * |
| 17 | * (at your option) any later version. * |
| 18 | * * |
| 19 | * This program is distributed in the hope that it will be useful, * |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 22 | * GNU General Public License for more details. * |
| 23 | * * |
| 24 | * You should have received a copy of the GNU General Public License * |
| 25 | * along with this program; if not, write to the * |
| 26 | * Free Software Foundation, Inc., * |
| 27 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
| 28 | ***************************************************************************/ |
| 29 | |
| 30 | #ifndef __KERNEL__ |
| 31 | # define __KERNEL__ |
| 32 | #endif |
| 33 | |
| 34 | #ifndef KBUILD_MODNAME |
| 35 | # define KBUILD_MODNAME KBUILD_STR(mefirmware) |
| 36 | #endif |
| 37 | |
| 38 | #include <linux/pci.h> |
| 39 | #include <linux/delay.h> |
| 40 | |
| 41 | #include <linux/firmware.h> |
| 42 | |
| 43 | #include "meplx_reg.h" |
| 44 | #include "medebug.h" |
| 45 | |
| 46 | #include "mefirmware.h" |
| 47 | |
| 48 | int me_xilinx_download(unsigned long register_base_control, |
| 49 | unsigned long register_base_data, |
| 50 | struct device *dev, const char *firmware_name) |
| 51 | { |
| 52 | int err = ME_ERRNO_FIRMWARE; |
| 53 | uint32_t value = 0; |
| 54 | int idx = 0; |
| 55 | |
| 56 | const struct firmware *fw; |
| 57 | |
| 58 | PDEBUG("executed.\n"); |
| 59 | |
| 60 | if (!firmware_name) { |
| 61 | PERROR("Request for firmware failed. No name provided. \n"); |
| 62 | return err; |
| 63 | } |
| 64 | |
| 65 | PINFO("Request '%s' firmware.\n", firmware_name); |
| 66 | err = request_firmware(&fw, firmware_name, dev); |
| 67 | |
| 68 | if (err) { |
| 69 | PERROR("Request for firmware failed.\n"); |
| 70 | return err; |
| 71 | } |
| 72 | // Set PLX local interrupt 2 polarity to high. |
| 73 | // Interrupt is thrown by init pin of xilinx. |
| 74 | outl(PLX_INTCSR_LOCAL_INT2_POL, register_base_control + PLX_INTCSR); |
| 75 | |
| 76 | // Set /CS and /WRITE of the Xilinx |
| 77 | value = inl(register_base_control + PLX_ICR); |
| 78 | value |= ME_FIRMWARE_CS_WRITE; |
| 79 | outl(value, register_base_control + PLX_ICR); |
| 80 | |
| 81 | // Init Xilinx with CS1 |
| 82 | inl(register_base_data + ME_XILINX_CS1_REG); |
| 83 | |
| 84 | // Wait for init to complete |
| 85 | udelay(20); |
| 86 | |
| 87 | // Checkl /INIT pin |
| 88 | if (! |
| 89 | (inl(register_base_control + PLX_INTCSR) & |
| 90 | PLX_INTCSR_LOCAL_INT2_STATE)) { |
| 91 | PERROR("Can't init Xilinx.\n"); |
| 92 | release_firmware(fw); |
| 93 | return -EIO; |
| 94 | } |
| 95 | // Reset /CS and /WRITE of the Xilinx |
| 96 | value = inl(register_base_control + PLX_ICR); |
| 97 | value &= ~ME_FIRMWARE_CS_WRITE; |
| 98 | outl(value, register_base_control + PLX_ICR); |
| 99 | |
| 100 | // Download Xilinx firmware |
| 101 | udelay(10); |
| 102 | |
| 103 | for (idx = 0; idx < fw->size; idx++) { |
| 104 | outl(fw->data[idx], register_base_data); |
| 105 | #ifdef ME6000_v2_4 |
| 106 | /// This checking only for board's version 2.4 |
| 107 | // Check if BUSY flag is set (low = ready, high = busy) |
| 108 | if (inl(register_base_control + PLX_ICR) & |
| 109 | ME_FIRMWARE_BUSY_FLAG) { |
| 110 | PERROR("Xilinx is still busy (idx = %d)\n", idx); |
| 111 | release_firmware(fw); |
| 112 | return -EIO; |
| 113 | } |
| 114 | #endif //ME6000_v2_4 |
| 115 | } |
| 116 | PDEBUG("Download finished. %d bytes written to PLX.\n", idx); |
| 117 | |
| 118 | // If done flag is high download was successful |
| 119 | if (inl(register_base_control + PLX_ICR) & ME_FIRMWARE_DONE_FLAG) { |
| 120 | PDEBUG("SUCCESS. Done flag is set.\n"); |
| 121 | } else { |
| 122 | PERROR("FAILURE. DONE flag is not set.\n"); |
| 123 | release_firmware(fw); |
| 124 | return -EIO; |
| 125 | } |
| 126 | |
| 127 | // Set /CS and /WRITE |
| 128 | value = inl(register_base_control + PLX_ICR); |
| 129 | value |= ME_FIRMWARE_CS_WRITE; |
| 130 | outl(value, register_base_control + PLX_ICR); |
| 131 | |
| 132 | PDEBUG("Enable interrupts on the PCI interface.\n"); |
| 133 | outl(ME_PLX_PCI_ACTIVATE, register_base_control + PLX_INTCSR); |
| 134 | release_firmware(fw); |
| 135 | |
| 136 | return 0; |
| 137 | } |