2007-05-07 20:33:32 -04:00
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/*
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* Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net>
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2006-12-19 19:58:27 -05:00
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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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* 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
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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2008-05-24 10:50:22 -04:00
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#include <linux/completion.h>
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#include <linux/crc-itu-t.h>
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2008-02-27 16:14:27 -05:00
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#include <linux/delay.h>
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2006-12-19 19:58:27 -05:00
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#include <linux/device.h>
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2008-05-24 10:50:22 -04:00
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#include <linux/errno.h>
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#include <linux/kref.h>
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#include <linux/module.h>
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2007-05-07 20:33:33 -04:00
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#include <linux/mutex.h>
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2008-05-24 10:50:22 -04:00
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2006-12-19 19:58:27 -05:00
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#include "fw-transaction.h"
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#include "fw-topology.h"
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2006-12-19 19:58:31 -05:00
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#include "fw-device.h"
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2006-12-19 19:58:27 -05:00
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2007-05-07 20:33:31 -04:00
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int fw_compute_block_crc(u32 *block)
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2006-12-19 19:58:27 -05:00
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{
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2007-05-07 20:33:31 -04:00
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__be32 be32_block[256];
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int i, length;
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length = (*block >> 16) & 0xff;
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for (i = 0; i < length; i++)
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be32_block[i] = cpu_to_be32(block[i + 1]);
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*block |= crc_itu_t(0, (u8 *) be32_block, length * 4);
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2006-12-19 19:58:27 -05:00
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2007-05-07 20:33:31 -04:00
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return length;
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2006-12-19 19:58:27 -05:00
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}
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2007-05-07 20:33:33 -04:00
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static DEFINE_MUTEX(card_mutex);
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2006-12-19 19:58:27 -05:00
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static LIST_HEAD(card_list);
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static LIST_HEAD(descriptor_list);
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static int descriptor_count;
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2007-05-07 20:33:35 -04:00
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#define BIB_CRC(v) ((v) << 0)
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#define BIB_CRC_LENGTH(v) ((v) << 16)
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#define BIB_INFO_LENGTH(v) ((v) << 24)
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#define BIB_LINK_SPEED(v) ((v) << 0)
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#define BIB_GENERATION(v) ((v) << 4)
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#define BIB_MAX_ROM(v) ((v) << 8)
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#define BIB_MAX_RECEIVE(v) ((v) << 12)
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#define BIB_CYC_CLK_ACC(v) ((v) << 16)
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#define BIB_PMC ((1) << 27)
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#define BIB_BMC ((1) << 28)
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#define BIB_ISC ((1) << 29)
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#define BIB_CMC ((1) << 30)
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#define BIB_IMC ((1) << 31)
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2006-12-19 19:58:27 -05:00
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static u32 *
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2007-05-07 20:33:34 -04:00
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generate_config_rom(struct fw_card *card, size_t *config_rom_length)
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2006-12-19 19:58:27 -05:00
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{
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struct fw_descriptor *desc;
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static u32 config_rom[256];
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int i, j, length;
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2007-05-07 20:33:32 -04:00
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/*
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* Initialize contents of config rom buffer. On the OHCI
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2007-01-21 14:44:09 -05:00
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* controller, block reads to the config rom accesses the host
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* memory, but quadlet read access the hardware bus info block
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* registers. That's just crack, but it means we should make
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2008-10-22 15:59:42 -04:00
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* sure the contents of bus info block in host memory matches
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2007-05-07 20:33:32 -04:00
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* the version stored in the OHCI registers.
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*/
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2006-12-19 19:58:27 -05:00
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2007-05-09 19:23:14 -04:00
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memset(config_rom, 0, sizeof(config_rom));
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2007-05-07 20:33:35 -04:00
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config_rom[0] = BIB_CRC_LENGTH(4) | BIB_INFO_LENGTH(4) | BIB_CRC(0);
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2006-12-19 19:58:27 -05:00
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config_rom[1] = 0x31333934;
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config_rom[2] =
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2007-05-07 20:33:35 -04:00
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BIB_LINK_SPEED(card->link_speed) |
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BIB_GENERATION(card->config_rom_generation++ % 14 + 2) |
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BIB_MAX_ROM(2) |
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BIB_MAX_RECEIVE(card->max_receive) |
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BIB_BMC | BIB_ISC | BIB_CMC | BIB_IMC;
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2006-12-19 19:58:27 -05:00
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config_rom[3] = card->guid >> 32;
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config_rom[4] = card->guid;
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/* Generate root directory. */
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i = 5;
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config_rom[i++] = 0;
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config_rom[i++] = 0x0c0083c0; /* node capabilities */
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j = i + descriptor_count;
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/* Generate root directory entries for descriptors. */
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list_for_each_entry (desc, &descriptor_list, link) {
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2007-03-07 12:12:36 -05:00
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if (desc->immediate > 0)
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config_rom[i++] = desc->immediate;
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2006-12-19 19:58:27 -05:00
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config_rom[i] = desc->key | (j - i);
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i++;
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j += desc->length;
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}
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/* Update root directory length. */
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config_rom[5] = (i - 5 - 1) << 16;
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/* End of root directory, now copy in descriptors. */
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list_for_each_entry (desc, &descriptor_list, link) {
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memcpy(&config_rom[i], desc->data, desc->length * 4);
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i += desc->length;
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}
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/* Calculate CRCs for all blocks in the config rom. This
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* assumes that CRC length and info length are identical for
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* the bus info block, which is always the case for this
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* implementation. */
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2007-05-07 20:33:31 -04:00
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for (i = 0; i < j; i += length + 1)
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length = fw_compute_block_crc(config_rom + i);
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2006-12-19 19:58:27 -05:00
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*config_rom_length = j;
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return config_rom;
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}
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static void
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2007-05-07 20:33:34 -04:00
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update_config_roms(void)
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2006-12-19 19:58:27 -05:00
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{
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struct fw_card *card;
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u32 *config_rom;
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size_t length;
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list_for_each_entry (card, &card_list, link) {
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config_rom = generate_config_rom(card, &length);
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card->driver->set_config_rom(card, config_rom, length);
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}
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}
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int
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2007-05-07 20:33:34 -04:00
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fw_core_add_descriptor(struct fw_descriptor *desc)
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2006-12-19 19:58:27 -05:00
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{
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size_t i;
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2007-05-07 20:33:32 -04:00
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/*
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* Check descriptor is valid; the length of all blocks in the
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2006-12-19 19:58:27 -05:00
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* descriptor has to add up to exactly the length of the
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2007-05-07 20:33:32 -04:00
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* block.
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*/
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2006-12-19 19:58:27 -05:00
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i = 0;
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while (i < desc->length)
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i += (desc->data[i] >> 16) + 1;
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if (i != desc->length)
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2007-03-28 15:26:42 -04:00
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return -EINVAL;
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2006-12-19 19:58:27 -05:00
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2007-05-07 20:33:33 -04:00
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mutex_lock(&card_mutex);
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2006-12-19 19:58:27 -05:00
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2007-05-07 20:33:34 -04:00
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list_add_tail(&desc->link, &descriptor_list);
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2006-12-19 19:58:27 -05:00
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descriptor_count++;
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2007-03-07 12:12:36 -05:00
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if (desc->immediate > 0)
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descriptor_count++;
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2006-12-19 19:58:27 -05:00
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update_config_roms();
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2007-05-07 20:33:33 -04:00
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mutex_unlock(&card_mutex);
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2006-12-19 19:58:27 -05:00
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return 0;
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}
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void
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2007-05-07 20:33:34 -04:00
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fw_core_remove_descriptor(struct fw_descriptor *desc)
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2006-12-19 19:58:27 -05:00
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{
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2007-05-07 20:33:33 -04:00
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mutex_lock(&card_mutex);
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2006-12-19 19:58:27 -05:00
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list_del(&desc->link);
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descriptor_count--;
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2007-03-07 12:12:36 -05:00
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if (desc->immediate > 0)
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descriptor_count--;
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2006-12-19 19:58:27 -05:00
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update_config_roms();
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2007-05-07 20:33:33 -04:00
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mutex_unlock(&card_mutex);
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2006-12-19 19:58:27 -05:00
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}
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2007-01-26 00:37:50 -05:00
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static const char gap_count_table[] = {
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63, 5, 7, 8, 10, 13, 16, 18, 21, 24, 26, 29, 32, 35, 37, 40
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};
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2008-11-29 11:44:57 -05:00
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void
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fw_schedule_bm_work(struct fw_card *card, unsigned long delay)
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{
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int scheduled;
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fw_card_get(card);
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scheduled = schedule_delayed_work(&card->work, delay);
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if (!scheduled)
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fw_card_put(card);
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}
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2007-01-26 00:38:45 -05:00
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static void
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fw_card_bm_work(struct work_struct *work)
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2006-12-19 19:58:31 -05:00
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{
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2007-01-26 00:37:50 -05:00
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struct fw_card *card = container_of(work, struct fw_card, work.work);
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2008-02-24 12:57:23 -05:00
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struct fw_device *root_device;
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struct fw_node *root_node, *local_node;
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2006-12-19 19:58:31 -05:00
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unsigned long flags;
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2008-07-20 08:20:53 -04:00
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int root_id, new_root_id, irm_id, gap_count, generation, grace, rcode;
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2008-03-24 15:57:12 -04:00
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bool do_reset = false;
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2009-01-09 14:49:37 -05:00
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bool root_device_is_running;
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bool root_device_is_cmc;
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2008-07-20 08:20:53 -04:00
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__be32 lock_data[2];
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2006-12-19 19:58:31 -05:00
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spin_lock_irqsave(&card->lock, flags);
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2008-02-24 12:57:23 -05:00
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local_node = card->local_node;
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root_node = card->root_node;
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if (local_node == NULL) {
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spin_unlock_irqrestore(&card->lock, flags);
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2008-11-29 11:44:57 -05:00
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goto out_put_card;
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2008-02-24 12:57:23 -05:00
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}
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fw_node_get(local_node);
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fw_node_get(root_node);
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2006-12-19 19:58:31 -05:00
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generation = card->generation;
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2008-02-24 12:57:23 -05:00
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root_device = root_node->data;
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2009-01-09 14:49:37 -05:00
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root_device_is_running = root_device &&
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atomic_read(&root_device->state) == FW_DEVICE_RUNNING;
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root_device_is_cmc = root_device && root_device->cmc;
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2008-02-24 12:57:23 -05:00
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root_id = root_node->node_id;
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2007-01-26 00:38:45 -05:00
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grace = time_after(jiffies, card->reset_jiffies + DIV_ROUND_UP(HZ, 10));
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2008-03-24 15:56:40 -04:00
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if (is_next_generation(generation, card->bm_generation) ||
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2007-01-26 00:38:45 -05:00
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(card->bm_generation != generation && grace)) {
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2007-05-07 20:33:32 -04:00
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/*
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* This first step is to figure out who is IRM and
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2007-01-26 00:38:45 -05:00
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* then try to become bus manager. If the IRM is not
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* well defined (e.g. does not have an active link
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* layer or does not responds to our lock request, we
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* will have to do a little vigilante bus management.
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* In that case, we do a goto into the gap count logic
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* so that when we do the reset, we still optimize the
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* gap count. That could well save a reset in the
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2007-05-07 20:33:32 -04:00
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* next generation.
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*/
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2007-01-26 00:38:45 -05:00
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irm_id = card->irm_node->node_id;
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if (!card->irm_node->link_on) {
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2008-02-24 12:57:23 -05:00
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new_root_id = local_node->node_id;
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2007-01-26 00:38:45 -05:00
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fw_notify("IRM has link off, making local node (%02x) root.\n",
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new_root_id);
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goto pick_me;
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}
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2008-07-20 08:20:53 -04:00
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lock_data[0] = cpu_to_be32(0x3f);
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lock_data[1] = cpu_to_be32(local_node->node_id);
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2007-01-26 00:38:45 -05:00
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spin_unlock_irqrestore(&card->lock, flags);
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2008-07-20 08:20:53 -04:00
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rcode = fw_run_transaction(card, TCODE_LOCK_COMPARE_SWAP,
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irm_id, generation, SCODE_100,
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CSR_REGISTER_BASE + CSR_BUS_MANAGER_ID,
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lock_data, sizeof(lock_data));
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2007-01-26 00:38:45 -05:00
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2008-07-20 08:20:53 -04:00
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if (rcode == RCODE_GENERATION)
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/* Another bus reset, BM work has been rescheduled. */
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2008-02-24 12:57:23 -05:00
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goto out;
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2007-01-26 00:38:45 -05:00
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2008-07-20 08:20:53 -04:00
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if (rcode == RCODE_COMPLETE &&
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lock_data[0] != cpu_to_be32(0x3f))
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2007-01-26 00:38:45 -05:00
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/* Somebody else is BM, let them do the work. */
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2008-02-24 12:57:23 -05:00
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goto out;
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2007-01-26 00:38:45 -05:00
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spin_lock_irqsave(&card->lock, flags);
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2008-07-20 08:20:53 -04:00
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if (rcode != RCODE_COMPLETE) {
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2007-05-07 20:33:32 -04:00
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/*
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* The lock request failed, maybe the IRM
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2007-01-26 00:38:45 -05:00
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* isn't really IRM capable after all. Let's
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* do a bus reset and pick the local node as
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2007-05-07 20:33:32 -04:00
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* root, and thus, IRM.
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*/
|
2008-02-24 12:57:23 -05:00
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new_root_id = local_node->node_id;
|
2007-01-26 00:38:45 -05:00
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fw_notify("BM lock failed, making local node (%02x) root.\n",
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new_root_id);
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goto pick_me;
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}
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} else if (card->bm_generation != generation) {
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
|
|
|
* OK, we weren't BM in the last generation, and it's
|
2007-01-26 00:38:45 -05:00
|
|
|
* less than 100ms since last bus reset. Reschedule
|
2007-05-07 20:33:32 -04:00
|
|
|
* this task 100ms from now.
|
|
|
|
*/
|
2007-01-26 00:38:45 -05:00
|
|
|
spin_unlock_irqrestore(&card->lock, flags);
|
2008-11-29 11:44:57 -05:00
|
|
|
fw_schedule_bm_work(card, DIV_ROUND_UP(HZ, 10));
|
2008-02-24 12:57:23 -05:00
|
|
|
goto out;
|
2007-01-26 00:38:45 -05:00
|
|
|
}
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
|
|
|
* We're bus manager for this generation, so next step is to
|
2007-01-26 00:38:45 -05:00
|
|
|
* make sure we have an active cycle master and do gap count
|
2007-05-07 20:33:32 -04:00
|
|
|
* optimization.
|
|
|
|
*/
|
2007-01-26 00:38:45 -05:00
|
|
|
card->bm_generation = generation;
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-02-24 12:57:23 -05:00
|
|
|
if (root_device == NULL) {
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
|
|
|
* Either link_on is false, or we failed to read the
|
|
|
|
* config rom. In either case, pick another root.
|
|
|
|
*/
|
2008-02-24 12:57:23 -05:00
|
|
|
new_root_id = local_node->node_id;
|
2009-01-09 14:49:37 -05:00
|
|
|
} else if (!root_device_is_running) {
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
|
|
|
* If we haven't probed this device yet, bail out now
|
|
|
|
* and let's try again once that's done.
|
|
|
|
*/
|
2007-01-26 00:38:45 -05:00
|
|
|
spin_unlock_irqrestore(&card->lock, flags);
|
2008-02-24 12:57:23 -05:00
|
|
|
goto out;
|
2009-01-09 14:49:37 -05:00
|
|
|
} else if (root_device_is_cmc) {
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
|
|
|
* FIXME: I suppose we should set the cmstr bit in the
|
2006-12-19 19:58:31 -05:00
|
|
|
* STATE_CLEAR register of this node, as described in
|
|
|
|
* 1394-1995, 8.4.2.6. Also, send out a force root
|
2007-05-07 20:33:32 -04:00
|
|
|
* packet for this node.
|
|
|
|
*/
|
2007-01-26 00:38:45 -05:00
|
|
|
new_root_id = root_id;
|
2007-01-26 00:37:50 -05:00
|
|
|
} else {
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
|
|
|
* Current root has an active link layer and we
|
2006-12-19 19:58:31 -05:00
|
|
|
* successfully read the config rom, but it's not
|
2007-05-07 20:33:32 -04:00
|
|
|
* cycle master capable.
|
|
|
|
*/
|
2008-02-24 12:57:23 -05:00
|
|
|
new_root_id = local_node->node_id;
|
2007-01-26 00:37:50 -05:00
|
|
|
}
|
|
|
|
|
2007-01-26 00:38:45 -05:00
|
|
|
pick_me:
|
2007-06-18 13:44:12 -04:00
|
|
|
/*
|
|
|
|
* Pick a gap count from 1394a table E-1. The table doesn't cover
|
|
|
|
* the typically much larger 1394b beta repeater delays though.
|
|
|
|
*/
|
|
|
|
if (!card->beta_repeaters_present &&
|
2008-02-24 12:57:23 -05:00
|
|
|
root_node->max_hops < ARRAY_SIZE(gap_count_table))
|
|
|
|
gap_count = gap_count_table[root_node->max_hops];
|
2007-01-26 00:37:50 -05:00
|
|
|
else
|
|
|
|
gap_count = 63;
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
2008-03-24 15:57:12 -04:00
|
|
|
* Finally, figure out if we should do a reset or not. If we have
|
|
|
|
* done less than 5 resets with the same physical topology and we
|
2007-05-07 20:33:32 -04:00
|
|
|
* have either a new root or a new gap count setting, let's do it.
|
|
|
|
*/
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-01-26 00:38:45 -05:00
|
|
|
if (card->bm_retries++ < 5 &&
|
|
|
|
(card->gap_count != gap_count || new_root_id != root_id))
|
2008-03-24 15:57:12 -04:00
|
|
|
do_reset = true;
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
spin_unlock_irqrestore(&card->lock, flags);
|
|
|
|
|
2007-01-26 00:37:50 -05:00
|
|
|
if (do_reset) {
|
|
|
|
fw_notify("phy config: card %d, new root=%x, gap_count=%d\n",
|
2007-01-26 00:38:45 -05:00
|
|
|
card->index, new_root_id, gap_count);
|
|
|
|
fw_send_phy_config(card, new_root_id, generation, gap_count);
|
2006-12-19 19:58:31 -05:00
|
|
|
fw_core_initiate_bus_reset(card, 1);
|
|
|
|
}
|
2008-02-24 12:57:23 -05:00
|
|
|
out:
|
|
|
|
fw_node_put(root_node);
|
|
|
|
fw_node_put(local_node);
|
2008-11-29 11:44:57 -05:00
|
|
|
out_put_card:
|
|
|
|
fw_card_put(card);
|
2006-12-19 19:58:31 -05:00
|
|
|
}
|
|
|
|
|
2006-12-19 19:58:27 -05:00
|
|
|
static void
|
|
|
|
flush_timer_callback(unsigned long data)
|
|
|
|
{
|
|
|
|
struct fw_card *card = (struct fw_card *)data;
|
|
|
|
|
|
|
|
fw_flush_transactions(card);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2007-01-14 09:29:07 -05:00
|
|
|
fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver,
|
2006-12-19 19:58:27 -05:00
|
|
|
struct device *device)
|
|
|
|
{
|
2007-02-06 14:49:38 -05:00
|
|
|
static atomic_t index = ATOMIC_INIT(-1);
|
2006-12-19 19:58:27 -05:00
|
|
|
|
2007-02-06 14:49:38 -05:00
|
|
|
card->index = atomic_inc_return(&index);
|
2007-01-21 14:44:09 -05:00
|
|
|
card->driver = driver;
|
2006-12-19 19:58:27 -05:00
|
|
|
card->device = device;
|
2007-01-21 14:44:09 -05:00
|
|
|
card->current_tlabel = 0;
|
|
|
|
card->tlabel_mask = 0;
|
2006-12-19 19:58:27 -05:00
|
|
|
card->color = 0;
|
2008-05-24 10:41:09 -04:00
|
|
|
card->broadcast_channel = BROADCAST_CHANNEL_INITIAL;
|
2006-12-19 19:58:27 -05:00
|
|
|
|
2008-05-24 10:50:22 -04:00
|
|
|
kref_init(&card->kref);
|
|
|
|
init_completion(&card->done);
|
2007-01-21 14:44:09 -05:00
|
|
|
INIT_LIST_HEAD(&card->transaction_list);
|
2006-12-19 19:58:27 -05:00
|
|
|
spin_lock_init(&card->lock);
|
|
|
|
setup_timer(&card->flush_timer,
|
|
|
|
flush_timer_callback, (unsigned long)card);
|
|
|
|
|
|
|
|
card->local_node = NULL;
|
|
|
|
|
2007-01-26 00:38:45 -05:00
|
|
|
INIT_DELAYED_WORK(&card->work, fw_card_bm_work);
|
2006-12-19 19:58:27 -05:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(fw_card_initialize);
|
|
|
|
|
|
|
|
int
|
|
|
|
fw_card_add(struct fw_card *card,
|
|
|
|
u32 max_receive, u32 link_speed, u64 guid)
|
|
|
|
{
|
|
|
|
u32 *config_rom;
|
|
|
|
size_t length;
|
2009-02-01 04:29:35 -05:00
|
|
|
int err;
|
2006-12-19 19:58:27 -05:00
|
|
|
|
|
|
|
card->max_receive = max_receive;
|
|
|
|
card->link_speed = link_speed;
|
|
|
|
card->guid = guid;
|
|
|
|
|
2007-05-07 20:33:33 -04:00
|
|
|
mutex_lock(&card_mutex);
|
2007-05-07 20:33:34 -04:00
|
|
|
config_rom = generate_config_rom(card, &length);
|
2006-12-19 19:58:27 -05:00
|
|
|
list_add_tail(&card->link, &card_list);
|
2007-05-07 20:33:33 -04:00
|
|
|
mutex_unlock(&card_mutex);
|
2006-12-19 19:58:27 -05:00
|
|
|
|
2009-02-01 04:29:35 -05:00
|
|
|
err = card->driver->enable(card, config_rom, length);
|
|
|
|
if (err < 0) {
|
|
|
|
mutex_lock(&card_mutex);
|
|
|
|
list_del(&card->link);
|
|
|
|
mutex_unlock(&card_mutex);
|
|
|
|
}
|
|
|
|
return err;
|
2006-12-19 19:58:27 -05:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(fw_card_add);
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
|
|
|
* The next few functions implements a dummy driver that use once a
|
2006-12-19 19:58:27 -05:00
|
|
|
* card driver shuts down an fw_card. This allows the driver to
|
|
|
|
* cleanly unload, as all IO to the card will be handled by the dummy
|
|
|
|
* driver instead of calling into the (possibly) unloaded module. The
|
2007-05-07 20:33:32 -04:00
|
|
|
* dummy driver just fails all IO.
|
|
|
|
*/
|
2006-12-19 19:58:27 -05:00
|
|
|
|
|
|
|
static int
|
|
|
|
dummy_enable(struct fw_card *card, u32 *config_rom, size_t length)
|
|
|
|
{
|
|
|
|
BUG();
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dummy_update_phy_reg(struct fw_card *card, int address,
|
|
|
|
int clear_bits, int set_bits)
|
|
|
|
{
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dummy_set_config_rom(struct fw_card *card,
|
|
|
|
u32 *config_rom, size_t length)
|
|
|
|
{
|
2007-05-07 20:33:32 -04:00
|
|
|
/*
|
|
|
|
* We take the card out of card_list before setting the dummy
|
|
|
|
* driver, so this should never get called.
|
|
|
|
*/
|
2006-12-19 19:58:27 -05:00
|
|
|
BUG();
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dummy_send_request(struct fw_card *card, struct fw_packet *packet)
|
|
|
|
{
|
2007-01-21 14:44:09 -05:00
|
|
|
packet->callback(packet, card, -ENODEV);
|
2006-12-19 19:58:27 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dummy_send_response(struct fw_card *card, struct fw_packet *packet)
|
|
|
|
{
|
2007-01-21 14:44:09 -05:00
|
|
|
packet->callback(packet, card, -ENODEV);
|
2006-12-19 19:58:27 -05:00
|
|
|
}
|
|
|
|
|
2007-02-06 14:49:32 -05:00
|
|
|
static int
|
|
|
|
dummy_cancel_packet(struct fw_card *card, struct fw_packet *packet)
|
|
|
|
{
|
|
|
|
return -ENOENT;
|
|
|
|
}
|
|
|
|
|
2006-12-19 19:58:27 -05:00
|
|
|
static int
|
|
|
|
dummy_enable_phys_dma(struct fw_card *card,
|
|
|
|
int node_id, int generation)
|
|
|
|
{
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct fw_card_driver dummy_driver = {
|
|
|
|
.enable = dummy_enable,
|
|
|
|
.update_phy_reg = dummy_update_phy_reg,
|
|
|
|
.set_config_rom = dummy_set_config_rom,
|
2007-01-21 14:44:09 -05:00
|
|
|
.send_request = dummy_send_request,
|
2007-02-06 14:49:32 -05:00
|
|
|
.cancel_packet = dummy_cancel_packet,
|
2007-01-21 14:44:09 -05:00
|
|
|
.send_response = dummy_send_response,
|
2007-01-21 14:45:32 -05:00
|
|
|
.enable_phys_dma = dummy_enable_phys_dma,
|
2006-12-19 19:58:27 -05:00
|
|
|
};
|
|
|
|
|
2008-05-24 10:50:22 -04:00
|
|
|
void
|
|
|
|
fw_card_release(struct kref *kref)
|
|
|
|
{
|
|
|
|
struct fw_card *card = container_of(kref, struct fw_card, kref);
|
|
|
|
|
|
|
|
complete(&card->done);
|
|
|
|
}
|
|
|
|
|
2006-12-19 19:58:27 -05:00
|
|
|
void
|
|
|
|
fw_core_remove_card(struct fw_card *card)
|
|
|
|
{
|
2007-03-23 12:24:02 -04:00
|
|
|
card->driver->update_phy_reg(card, 4,
|
|
|
|
PHY_LINK_ACTIVE | PHY_CONTENDER, 0);
|
2006-12-19 19:58:27 -05:00
|
|
|
fw_core_initiate_bus_reset(card, 1);
|
|
|
|
|
2007-05-07 20:33:33 -04:00
|
|
|
mutex_lock(&card_mutex);
|
2009-01-24 14:35:38 -05:00
|
|
|
list_del_init(&card->link);
|
2007-05-07 20:33:33 -04:00
|
|
|
mutex_unlock(&card_mutex);
|
2006-12-19 19:58:27 -05:00
|
|
|
|
|
|
|
/* Set up the dummy driver. */
|
|
|
|
card->driver = &dummy_driver;
|
|
|
|
|
|
|
|
fw_destroy_nodes(card);
|
2008-05-24 10:50:22 -04:00
|
|
|
|
|
|
|
/* Wait for all users, especially device workqueue jobs, to finish. */
|
|
|
|
fw_card_put(card);
|
|
|
|
wait_for_completion(&card->done);
|
2007-08-20 19:05:14 -04:00
|
|
|
|
2008-07-12 08:51:18 -04:00
|
|
|
WARN_ON(!list_empty(&card->transaction_list));
|
2007-08-20 19:05:14 -04:00
|
|
|
del_timer_sync(&card->flush_timer);
|
2006-12-19 19:58:27 -05:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(fw_core_remove_card);
|
|
|
|
|
|
|
|
int
|
|
|
|
fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
|
|
|
|
{
|
2007-03-23 12:24:02 -04:00
|
|
|
int reg = short_reset ? 5 : 1;
|
|
|
|
int bit = short_reset ? PHY_BUS_SHORT_RESET : PHY_BUS_RESET;
|
|
|
|
|
|
|
|
return card->driver->update_phy_reg(card, reg, 0, bit);
|
2006-12-19 19:58:27 -05:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(fw_core_initiate_bus_reset);
|