author | Dave Page <dave.page@gleeble.com> |
Tue, 07 Apr 2015 21:07:16 -0400 | |
changeset 2614 | 9b29d7bfa230 |
parent 2589 | 2b9c78543663 |
permissions | -rw-r--r-- |
2589
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/** |
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Network Driver for Beckhoff CCAT communication controller |
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3 |
Copyright (C) 2014 Beckhoff Automation GmbH |
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4 |
Author: Patrick Bruenn <p.bruenn@beckhoff.com> |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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8 |
the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License along |
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17 |
with this program; if not, write to the Free Software Foundation, Inc., |
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18 |
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/ |
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|
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#include <linux/fs.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/sched.h> |
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#include <linux/uaccess.h> |
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#include "module.h" |
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#include "update.h" |
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|
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#define CCAT_DATA_IN_4 0x038 |
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#define CCAT_DATA_IN_N 0x7F0 |
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#define CCAT_DATA_OUT_4 0x030 |
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#define CCAT_DATA_BLOCK_SIZE (size_t)((CCAT_DATA_IN_N - CCAT_DATA_IN_4)/8) |
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#define CCAT_WRITE_BLOCK_SIZE 128 |
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#define CCAT_FLASH_SIZE (size_t)0xE0000 |
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|
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/** FUNCTION_NAME CMD, CLOCKS */ |
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#define CCAT_BULK_ERASE 0xE3, 8 |
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#define CCAT_GET_PROM_ID 0xD5, 40 |
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#define CCAT_READ_FLASH 0xC0, 32 |
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#define CCAT_READ_STATUS 0xA0, 16 |
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#define CCAT_WRITE_ENABLE 0x60, 8 |
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#define CCAT_WRITE_FLASH 0x40, 32 |
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|
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/* from http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits */ |
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#define SWAP_BITS(B) \ |
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((((B) * 0x0802LU & 0x22110LU) | ((B) * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16) |
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|
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/** |
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* struct update_buffer - keep track of a CCAT FPGA update |
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* @update: pointer to a valid ccat_update object |
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* @data: buffer used for write operations |
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* @size: number of bytes written to the data buffer, if 0 on ccat_update_release() no data will be written to FPGA |
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*/ |
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struct update_buffer { |
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struct ccat_update *update; |
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char data[CCAT_FLASH_SIZE]; |
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size_t size; |
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}; |
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|
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/** |
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* wait_until_busy_reset() - wait until the busy flag was reset |
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* @ioaddr: address of the CCAT Update function in PCI config space |
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*/ |
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static inline void wait_until_busy_reset(void __iomem * const ioaddr) |
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{ |
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wmb(); |
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while (ioread8(ioaddr + 1)) { |
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schedule(); |
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} |
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} |
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|
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/** |
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* __ccat_update_cmd() - Helper to issue a FPGA flash command |
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* @ioaddr: address of the CCAT Update function in PCI config space |
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* @cmd: the command identifier |
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* @clocks: the number of clocks associated with the specified command |
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* |
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* no write memory barrier is called and the busy flag is not evaluated |
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*/ |
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static inline void __ccat_update_cmd(void __iomem * const ioaddr, u8 cmd, |
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u16 clocks) |
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{ |
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iowrite8((0xff00 & clocks) >> 8, ioaddr); |
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iowrite8(0x00ff & clocks, ioaddr + 0x8); |
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iowrite8(cmd, ioaddr + 0x10); |
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} |
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|
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/** |
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* ccat_update_cmd() - Helper to issue a FPGA flash command |
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* @ioaddr: address of the CCAT Update function in PCI config space |
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* @cmd: the command identifier |
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* @clocks: the number of clocks associated with the specified command |
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* |
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* Triggers a full flash command cycle with write memory barrier and |
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* command activate. This call blocks until the busy flag is reset. |
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*/ |
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static inline void ccat_update_cmd(void __iomem * const ioaddr, u8 cmd, |
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u16 clocks) |
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{ |
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__ccat_update_cmd(ioaddr, cmd, clocks); |
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101 |
wmb(); |
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102 |
iowrite8(0xff, ioaddr + 0x7f8); |
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wait_until_busy_reset(ioaddr); |
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104 |
} |
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|
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/** |
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107 |
* ccat_update_cmd_addr() - Helper to issue a FPGA flash command with address parameter |
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108 |
* @ioaddr: address of the CCAT Update function in PCI config space |
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* @cmd: the command identifier |
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110 |
* @clocks: the number of clocks associated with the specified command |
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* @addr: 24 bit address associated with the specified command |
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112 |
* |
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* Triggers a full flash command cycle with write memory barrier and |
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* command activate. This call blocks until the busy flag is reset. |
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115 |
*/ |
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116 |
static inline void ccat_update_cmd_addr(void __iomem * const ioaddr, |
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|
117 |
u8 cmd, u16 clocks, u32 addr) |
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|
118 |
{ |
2b9c78543663
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parents:
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|
119 |
const u8 addr_0 = SWAP_BITS(addr & 0xff); |
2b9c78543663
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|
120 |
const u8 addr_1 = SWAP_BITS((addr & 0xff00) >> 8); |
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Reverted default branch to stable-1.5.
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|
121 |
const u8 addr_2 = SWAP_BITS((addr & 0xff0000) >> 16); |
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|
122 |
|
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parents:
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|
123 |
__ccat_update_cmd(ioaddr, cmd, clocks); |
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Reverted default branch to stable-1.5.
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|
124 |
iowrite8(addr_2, ioaddr + 0x18); |
2b9c78543663
Reverted default branch to stable-1.5.
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parents:
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|
125 |
iowrite8(addr_1, ioaddr + 0x20); |
2b9c78543663
Reverted default branch to stable-1.5.
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parents:
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|
126 |
iowrite8(addr_0, ioaddr + 0x28); |
2b9c78543663
Reverted default branch to stable-1.5.
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|
127 |
wmb(); |
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|
128 |
iowrite8(0xff, ioaddr + 0x7f8); |
2b9c78543663
Reverted default branch to stable-1.5.
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|
129 |
wait_until_busy_reset(ioaddr); |
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|
130 |
} |
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|
131 |
|
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|
132 |
/** |
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|
133 |
* ccat_get_status() - Read CCAT Update status |
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Reverted default branch to stable-1.5.
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|
134 |
* @ioaddr: address of the CCAT Update function in PCI config space |
2b9c78543663
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|
135 |
* |
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|
136 |
* Return: the current status of the CCAT Update function |
2b9c78543663
Reverted default branch to stable-1.5.
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|
137 |
*/ |
2b9c78543663
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parents:
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|
138 |
static u8 ccat_get_status(void __iomem * const ioaddr) |
2b9c78543663
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|
139 |
{ |
2b9c78543663
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|
140 |
ccat_update_cmd(ioaddr, CCAT_READ_STATUS); |
2b9c78543663
Reverted default branch to stable-1.5.
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|
141 |
return ioread8(ioaddr + 0x20); |
2b9c78543663
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|
142 |
} |
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parents:
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changeset
|
143 |
|
2b9c78543663
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parents:
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|
144 |
/** |
2b9c78543663
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|
145 |
* ccat_read_flash_block() - Read a block of CCAT configuration data from flash |
2b9c78543663
Reverted default branch to stable-1.5.
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|
146 |
* @ioaddr: address of the CCAT Update function in PCI config space |
2b9c78543663
Reverted default branch to stable-1.5.
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|
147 |
* @addr: 24 bit address of the block to read |
2b9c78543663
Reverted default branch to stable-1.5.
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|
148 |
* @len: number of bytes to read from this block, len <= CCAT_DATA_BLOCK_SIZE |
2b9c78543663
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|
149 |
* @buf: output buffer in user space |
2b9c78543663
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changeset
|
150 |
* |
2b9c78543663
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changeset
|
151 |
* Copies one block of configuration data from the CCAT FPGA's flash to |
2b9c78543663
Reverted default branch to stable-1.5.
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|
152 |
* the user space buffer. |
2b9c78543663
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|
153 |
* Note that the size of the FPGA's firmware is not known exactly so it |
2b9c78543663
Reverted default branch to stable-1.5.
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|
154 |
* is very possible that the overall buffer ends with a lot of 0xff. |
2b9c78543663
Reverted default branch to stable-1.5.
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|
155 |
* |
2b9c78543663
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|
156 |
* Return: the number of bytes copied |
2b9c78543663
Reverted default branch to stable-1.5.
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changeset
|
157 |
*/ |
2b9c78543663
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parents:
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|
158 |
static int ccat_read_flash_block(void __iomem * const ioaddr, |
2b9c78543663
Reverted default branch to stable-1.5.
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|
159 |
const u32 addr, const u16 len, |
2b9c78543663
Reverted default branch to stable-1.5.
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|
160 |
char __user * const buf) |
2b9c78543663
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|
161 |
{ |
2b9c78543663
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parents:
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|
162 |
u16 i; |
2b9c78543663
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parents:
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|
163 |
const u16 clocks = 8 * len; |
2b9c78543663
Reverted default branch to stable-1.5.
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parents:
diff
changeset
|
164 |
|
2b9c78543663
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parents:
diff
changeset
|
165 |
ccat_update_cmd_addr(ioaddr, CCAT_READ_FLASH + clocks, addr); |
2b9c78543663
Reverted default branch to stable-1.5.
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parents:
diff
changeset
|
166 |
for (i = 0; i < len; i++) { |
2b9c78543663
Reverted default branch to stable-1.5.
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parents:
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|
167 |
put_user(ioread8(ioaddr + CCAT_DATA_IN_4 + 8 * i), buf + i); |
2b9c78543663
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parents:
diff
changeset
|
168 |
} |
2b9c78543663
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Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
169 |
return len; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
170 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
171 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
172 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
173 |
* ccat_read_flash() - Read a chunk of CCAT configuration data from flash |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
174 |
* @ioaddr: address of the CCAT Update function in PCI config space |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
175 |
* @buf: output buffer in user space |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
176 |
* @len: number of bytes to read |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
177 |
* @off: offset in the configuration data |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
178 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
179 |
* Copies multiple blocks of configuration data from the CCAT FPGA's |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
180 |
* flash to the user space buffer. |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
181 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
182 |
* Return: the number of bytes copied |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
183 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
184 |
static int ccat_read_flash(void __iomem * const ioaddr, char __user * buf, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
185 |
u32 len, loff_t * off) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
186 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
187 |
const loff_t start = *off; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
188 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
189 |
while (len > CCAT_DATA_BLOCK_SIZE) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
190 |
*off += |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
191 |
ccat_read_flash_block(ioaddr, *off, CCAT_DATA_BLOCK_SIZE, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
192 |
buf); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
193 |
buf += CCAT_DATA_BLOCK_SIZE; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
194 |
len -= CCAT_DATA_BLOCK_SIZE; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
195 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
196 |
*off += ccat_read_flash_block(ioaddr, *off, len, buf); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
197 |
return *off - start; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
198 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
199 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
200 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
201 |
* ccat_wait_status_cleared() - wait until CCAT status is cleared |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
202 |
* @ioaddr: address of the CCAT Update function in PCI config space |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
203 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
204 |
* Blocks until bit 7 of the CCAT Update status is reset |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
205 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
206 |
static void ccat_wait_status_cleared(void __iomem * const ioaddr) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
207 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
208 |
u8 status; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
209 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
210 |
do { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
211 |
status = ccat_get_status(ioaddr); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
212 |
} while (status & (1 << 7)); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
213 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
214 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
215 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
216 |
* ccat_write_flash_block() - Write a block of CCAT configuration data to flash |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
217 |
* @ioaddr: address of the CCAT Update function in PCI config space |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
218 |
* @addr: 24 bit start address in the CCAT FPGA's flash |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
219 |
* @len: number of bytes to write in this block, len <= CCAT_WRITE_BLOCK_SIZE |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
220 |
* @buf: input buffer |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
221 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
222 |
* Copies one block of configuration data to the CCAT FPGA's flash |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
223 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
224 |
* Return: the number of bytes copied |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
225 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
226 |
static int ccat_write_flash_block(void __iomem * const ioaddr, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
227 |
const u32 addr, const u16 len, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
228 |
const char *const buf) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
229 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
230 |
const u16 clocks = 8 * len; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
231 |
u16 i; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
232 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
233 |
ccat_update_cmd(ioaddr, CCAT_WRITE_ENABLE); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
234 |
for (i = 0; i < len; i++) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
235 |
iowrite8(buf[i], ioaddr + CCAT_DATA_OUT_4 + 8 * i); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
236 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
237 |
ccat_update_cmd_addr(ioaddr, CCAT_WRITE_FLASH + clocks, addr); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
238 |
ccat_wait_status_cleared(ioaddr); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
239 |
return len; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
240 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
241 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
242 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
243 |
* ccat_write_flash() - Write a new CCAT configuration to FPGA's flash |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
244 |
* @update: a CCAT Update buffer containing the new FPGA configuration |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
245 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
246 |
static void ccat_write_flash(const struct update_buffer *const update) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
247 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
248 |
const char *buf = update->data; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
249 |
u32 off = 0; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
250 |
size_t len = update->size; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
251 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
252 |
while (len > CCAT_WRITE_BLOCK_SIZE) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
253 |
ccat_write_flash_block(update->update->ioaddr, off, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
254 |
(u16) CCAT_WRITE_BLOCK_SIZE, buf); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
255 |
off += CCAT_WRITE_BLOCK_SIZE; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
256 |
buf += CCAT_WRITE_BLOCK_SIZE; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
257 |
len -= CCAT_WRITE_BLOCK_SIZE; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
258 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
259 |
ccat_write_flash_block(update->update->ioaddr, off, (u16) len, buf); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
260 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
261 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
262 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
263 |
* ccat_update_destroy() - Cleanup the CCAT Update function |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
264 |
* @ref: pointer to a struct kref embedded into a struct ccat_update, which we intend to destroy |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
265 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
266 |
* Retrieves the parent struct ccat_update and destroys it. |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
267 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
268 |
static void ccat_update_destroy(struct kref *ref) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
269 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
270 |
struct ccat_update *update = |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
271 |
container_of(ref, struct ccat_update, refcount); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
272 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
273 |
cdev_del(&update->cdev); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
274 |
device_destroy(update->class, update->dev); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
275 |
class_destroy(update->class); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
276 |
unregister_chrdev_region(update->dev, 1); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
277 |
kfree(update); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
278 |
pr_debug("%s(): done\n", __FUNCTION__); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
279 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
280 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
281 |
static int ccat_update_open(struct inode *const i, struct file *const f) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
282 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
283 |
struct ccat_update *update = |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
284 |
container_of(i->i_cdev, struct ccat_update, cdev); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
285 |
struct update_buffer *buf; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
286 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
287 |
kref_get(&update->refcount); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
288 |
if (atomic_read(&update->refcount.refcount) > 2) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
289 |
kref_put(&update->refcount, ccat_update_destroy); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
290 |
return -EBUSY; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
291 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
292 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
293 |
buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
294 |
if (!buf) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
295 |
kref_put(&update->refcount, ccat_update_destroy); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
296 |
return -ENOMEM; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
297 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
298 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
299 |
buf->update = update; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
300 |
f->private_data = buf; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
301 |
return 0; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
302 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
303 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
304 |
static int ccat_update_release(struct inode *const i, struct file *const f) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
305 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
306 |
const struct update_buffer *const buf = f->private_data; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
307 |
struct ccat_update *const update = buf->update; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
308 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
309 |
if (buf->size > 0) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
310 |
ccat_update_cmd(update->ioaddr, CCAT_WRITE_ENABLE); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
311 |
ccat_update_cmd(update->ioaddr, CCAT_BULK_ERASE); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
312 |
ccat_wait_status_cleared(update->ioaddr); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
313 |
ccat_write_flash(buf); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
314 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
315 |
kfree(f->private_data); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
316 |
kref_put(&update->refcount, ccat_update_destroy); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
317 |
return 0; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
318 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
319 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
320 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
321 |
* ccat_update_read() - Read CCAT configuration data from flash |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
322 |
* @f: file handle previously initialized with ccat_update_open() |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
323 |
* @buf: buffer in user space provided for our data |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
324 |
* @len: length of the user space buffer |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
325 |
* @off: current offset of our file operation |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
326 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
327 |
* Copies data from the CCAT FPGA's configuration flash to user space. |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
328 |
* Note that the size of the FPGA's firmware is not known exactly so it |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
329 |
* is very possible that the overall buffer ends with a lot of 0xff. |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
330 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
331 |
* Return: the number of bytes written, or 0 if EOF reached |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
332 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
333 |
static ssize_t ccat_update_read(struct file *const f, char __user * buf, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
334 |
size_t len, loff_t * off) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
335 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
336 |
struct update_buffer *update = f->private_data; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
337 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
338 |
if (!buf || !off) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
339 |
return -EINVAL; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
340 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
341 |
if (*off >= CCAT_FLASH_SIZE) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
342 |
return 0; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
343 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
344 |
if (*off + len >= CCAT_FLASH_SIZE) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
345 |
len = CCAT_FLASH_SIZE - *off; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
346 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
347 |
return ccat_read_flash(update->update->ioaddr, buf, len, off); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
348 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
349 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
350 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
351 |
* ccat_update_write() - Write data to the CCAT FPGA's configuration flash |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
352 |
* @f: file handle previously initialized with ccat_update_open() |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
353 |
* @buf: buffer in user space providing the new configuration data (from *.rbf) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
354 |
* @len: length of the user space buffer |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
355 |
* @off: current offset in the configuration data |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
356 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
357 |
* Copies data from user space (possibly a *.rbf) to the CCAT FPGA's |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
358 |
* configuration flash to user space. |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
359 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
360 |
* Return: the number of bytes written, or 0 if flash end is reached |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
361 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
362 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
363 |
static ssize_t ccat_update_write(struct file *const f, const char __user * buf, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
364 |
size_t len, loff_t * off) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
365 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
366 |
struct update_buffer *const update = f->private_data; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
367 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
368 |
if (*off + len > sizeof(update->data)) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
369 |
return 0; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
370 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
371 |
if (copy_from_user(update->data + *off, buf, len)) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
372 |
return -EFAULT; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
373 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
374 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
375 |
*off += len; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
376 |
update->size = *off; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
377 |
return len; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
378 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
379 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
380 |
static struct file_operations update_ops = { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
381 |
.owner = THIS_MODULE, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
382 |
.open = ccat_update_open, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
383 |
.release = ccat_update_release, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
384 |
.read = ccat_update_read, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
385 |
.write = ccat_update_write, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
386 |
}; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
387 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
388 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
389 |
* ccat_get_prom_id() - Read CCAT PROM ID |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
390 |
* @ioaddr: address of the CCAT Update function in PCI config space |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
391 |
* |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
392 |
* Return: the CCAT FPGA's PROM identifier |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
393 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
394 |
u8 ccat_get_prom_id(void __iomem * const ioaddr) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
395 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
396 |
ccat_update_cmd(ioaddr, CCAT_GET_PROM_ID); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
397 |
return ioread8(ioaddr + 0x38); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
398 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
399 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
400 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
401 |
* ccat_update_init() - Initialize the CCAT Update function |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
402 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
403 |
struct ccat_update *ccat_update_init(const struct ccat_device *const ccatdev, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
404 |
void __iomem * const addr) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
405 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
406 |
struct ccat_update *const update = kzalloc(sizeof(*update), GFP_KERNEL); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
407 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
408 |
if (!update) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
409 |
return NULL; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
410 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
411 |
kref_init(&update->refcount); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
412 |
update->ioaddr = ccatdev->bar[0].ioaddr + ioread32(addr + 0x8); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
413 |
memcpy_fromio(&update->info, addr, sizeof(update->info)); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
414 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
415 |
if (0x00 != update->info.rev) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
416 |
pr_warn("CCAT Update rev. %d not supported\n", |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
417 |
update->info.rev); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
418 |
goto cleanup; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
419 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
420 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
421 |
if (alloc_chrdev_region(&update->dev, 0, 1, KBUILD_MODNAME)) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
422 |
pr_warn("alloc_chrdev_region() failed\n"); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
423 |
goto cleanup; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
424 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
425 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
426 |
update->class = class_create(THIS_MODULE, "ccat_update"); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
427 |
if (NULL == update->class) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
428 |
pr_warn("Create device class failed\n"); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
429 |
goto cleanup; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
430 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
431 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
432 |
if (NULL == |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
433 |
device_create(update->class, NULL, update->dev, NULL, |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
434 |
"ccat_update")) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
435 |
pr_warn("device_create() failed\n"); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
436 |
goto cleanup; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
437 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
438 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
439 |
cdev_init(&update->cdev, &update_ops); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
440 |
update->cdev.owner = THIS_MODULE; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
441 |
update->cdev.ops = &update_ops; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
442 |
if (cdev_add(&update->cdev, update->dev, 1)) { |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
443 |
pr_warn("add update device failed\n"); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
444 |
goto cleanup; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
445 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
446 |
return update; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
447 |
cleanup: |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
448 |
kref_put(&update->refcount, ccat_update_destroy); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
449 |
return NULL; |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
450 |
} |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
451 |
|
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
452 |
/** |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
453 |
* ccat_update_remove() - Prepare the CCAT Update function for removal |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
454 |
*/ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
455 |
void ccat_update_remove(struct ccat_update *update) |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
456 |
{ |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
457 |
kref_put(&update->refcount, ccat_update_destroy); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
458 |
pr_debug("%s(): done\n", __FUNCTION__); |
2b9c78543663
Reverted default branch to stable-1.5.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
459 |
} |