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path: root/drivers/firewire/core-card.c
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Diffstat (limited to 'drivers/firewire/core-card.c')
-rw-r--r--drivers/firewire/core-card.c98
1 files changed, 71 insertions, 27 deletions
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index be0492398ef..57ea7f46417 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -32,11 +32,27 @@
#include <linux/spinlock.h>
#include <linux/workqueue.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
#include <asm/byteorder.h>
#include "core.h"
+#define define_fw_printk_level(func, kern_level) \
+void func(const struct fw_card *card, const char *fmt, ...) \
+{ \
+ struct va_format vaf; \
+ va_list args; \
+ \
+ va_start(args, fmt); \
+ vaf.fmt = fmt; \
+ vaf.va = &args; \
+ printk(kern_level KBUILD_MODNAME " %s: %pV", \
+ dev_name(card->device), &vaf); \
+ va_end(args); \
+}
+define_fw_printk_level(fw_err, KERN_ERR);
+define_fw_printk_level(fw_notice, KERN_NOTICE);
+
int fw_compute_block_crc(__be32 *block)
{
int length;
@@ -75,6 +91,15 @@ static size_t config_rom_length = 1 + 4 + 1 + 1;
#define BIB_IRMC ((1) << 31)
#define NODE_CAPABILITIES 0x0c0083c0 /* per IEEE 1394 clause 8.3.2.6.5.2 */
+/*
+ * IEEE-1394 specifies a default SPLIT_TIMEOUT value of 800 cycles (100 ms),
+ * but we have to make it longer because there are many devices whose firmware
+ * is just too slow for that.
+ */
+#define DEFAULT_SPLIT_TIMEOUT (2 * 8000)
+
+#define CANON_OUI 0x000085
+
static void generate_config_rom(struct fw_card *card, __be32 *config_rom)
{
struct fw_descriptor *desc;
@@ -219,8 +244,8 @@ void fw_schedule_bus_reset(struct fw_card *card, bool delayed, bool short_reset)
/* Use an arbitrary short delay to combine multiple reset requests. */
fw_card_get(card);
- if (!schedule_delayed_work(&card->br_work,
- delayed ? DIV_ROUND_UP(HZ, 100) : 0))
+ if (!queue_delayed_work(fw_workqueue, &card->br_work,
+ delayed ? DIV_ROUND_UP(HZ, 100) : 0))
fw_card_put(card);
}
EXPORT_SYMBOL(fw_schedule_bus_reset);
@@ -231,8 +256,8 @@ static void br_work(struct work_struct *work)
/* Delay for 2s after last reset per IEEE 1394 clause 8.2.1. */
if (card->reset_jiffies != 0 &&
- time_is_after_jiffies(card->reset_jiffies + 2 * HZ)) {
- if (!schedule_delayed_work(&card->br_work, 2 * HZ))
+ time_before64(get_jiffies_64(), card->reset_jiffies + 2 * HZ)) {
+ if (!queue_delayed_work(fw_workqueue, &card->br_work, 2 * HZ))
fw_card_put(card);
return;
}
@@ -249,10 +274,9 @@ static void allocate_broadcast_channel(struct fw_card *card, int generation)
if (!card->broadcast_channel_allocated) {
fw_iso_resource_manage(card, generation, 1ULL << 31,
- &channel, &bandwidth, true,
- card->bm_transaction_data);
+ &channel, &bandwidth, true);
if (channel != 31) {
- fw_notify("failed to allocate broadcast channel\n");
+ fw_notice(card, "failed to allocate broadcast channel\n");
return;
}
card->broadcast_channel_allocated = true;
@@ -284,6 +308,8 @@ static void bm_work(struct work_struct *work)
bool root_device_is_running;
bool root_device_is_cmc;
bool irm_is_1394_1995_only;
+ bool keep_this_irm;
+ __be32 transaction_data[2];
spin_lock_irq(&card->lock);
@@ -305,11 +331,16 @@ static void bm_work(struct work_struct *work)
irm_is_1394_1995_only = irm_device && irm_device->config_rom &&
(irm_device->config_rom[2] & 0x000000f0) == 0;
+ /* Canon MV5i works unreliably if it is not root node. */
+ keep_this_irm = irm_device && irm_device->config_rom &&
+ irm_device->config_rom[3] >> 8 == CANON_OUI;
+
root_id = root_node->node_id;
irm_id = card->irm_node->node_id;
local_id = card->local_node->node_id;
- grace = time_after(jiffies, card->reset_jiffies + DIV_ROUND_UP(HZ, 8));
+ grace = time_after64(get_jiffies_64(),
+ card->reset_jiffies + DIV_ROUND_UP(HZ, 8));
if ((is_next_generation(generation, card->bm_generation) &&
!card->bm_abdicate) ||
@@ -328,33 +359,33 @@ static void bm_work(struct work_struct *work)
if (!card->irm_node->link_on) {
new_root_id = local_id;
- fw_notify("%s, making local node (%02x) root.\n",
+ fw_notice(card, "%s, making local node (%02x) root\n",
"IRM has link off", new_root_id);
goto pick_me;
}
- if (irm_is_1394_1995_only) {
+ if (irm_is_1394_1995_only && !keep_this_irm) {
new_root_id = local_id;
- fw_notify("%s, making local node (%02x) root.\n",
+ fw_notice(card, "%s, making local node (%02x) root\n",
"IRM is not 1394a compliant", new_root_id);
goto pick_me;
}
- card->bm_transaction_data[0] = cpu_to_be32(0x3f);
- card->bm_transaction_data[1] = cpu_to_be32(local_id);
+ transaction_data[0] = cpu_to_be32(0x3f);
+ transaction_data[1] = cpu_to_be32(local_id);
spin_unlock_irq(&card->lock);
rcode = fw_run_transaction(card, TCODE_LOCK_COMPARE_SWAP,
irm_id, generation, SCODE_100,
CSR_REGISTER_BASE + CSR_BUS_MANAGER_ID,
- card->bm_transaction_data, 8);
+ transaction_data, 8);
if (rcode == RCODE_GENERATION)
/* Another bus reset, BM work has been rescheduled. */
goto out;
- bm_id = be32_to_cpu(card->bm_transaction_data[0]);
+ bm_id = be32_to_cpu(transaction_data[0]);
spin_lock_irq(&card->lock);
if (rcode == RCODE_COMPLETE && generation == card->generation)
@@ -382,7 +413,7 @@ static void bm_work(struct work_struct *work)
spin_lock_irq(&card->lock);
- if (rcode != RCODE_COMPLETE) {
+ if (rcode != RCODE_COMPLETE && !keep_this_irm) {
/*
* The lock request failed, maybe the IRM
* isn't really IRM capable after all. Let's
@@ -390,8 +421,8 @@ static void bm_work(struct work_struct *work)
* root, and thus, IRM.
*/
new_root_id = local_id;
- fw_notify("%s, making local node (%02x) root.\n",
- "BM lock failed", new_root_id);
+ fw_notice(card, "BM lock failed (%s), making local node (%02x) root\n",
+ fw_rcode_string(rcode), new_root_id);
goto pick_me;
}
} else if (card->bm_generation != generation) {
@@ -463,8 +494,8 @@ static void bm_work(struct work_struct *work)
spin_unlock_irq(&card->lock);
if (do_reset) {
- fw_notify("phy config: card %d, new root=%x, gap_count=%d\n",
- card->index, new_root_id, gap_count);
+ fw_notice(card, "phy config: new root=%x, gap_count=%d\n",
+ new_root_id, gap_count);
fw_send_phy_config(card, new_root_id, generation, gap_count);
reset_bus(card, true);
/* Will allocate broadcast channel after the reset. */
@@ -475,11 +506,11 @@ static void bm_work(struct work_struct *work)
/*
* Make sure that the cycle master sends cycle start packets.
*/
- card->bm_transaction_data[0] = cpu_to_be32(CSR_STATE_BIT_CMSTR);
+ transaction_data[0] = cpu_to_be32(CSR_STATE_BIT_CMSTR);
rcode = fw_run_transaction(card, TCODE_WRITE_QUADLET_REQUEST,
root_id, generation, SCODE_100,
CSR_REGISTER_BASE + CSR_STATE_SET,
- card->bm_transaction_data, 4);
+ transaction_data, 4);
if (rcode == RCODE_GENERATION)
goto out;
}
@@ -504,10 +535,11 @@ void fw_card_initialize(struct fw_card *card,
card->device = device;
card->current_tlabel = 0;
card->tlabel_mask = 0;
- card->split_timeout_hi = 0;
- card->split_timeout_lo = 800 << 19;
- card->split_timeout_cycles = 800;
- card->split_timeout_jiffies = DIV_ROUND_UP(HZ, 10);
+ card->split_timeout_hi = DEFAULT_SPLIT_TIMEOUT / 8000;
+ card->split_timeout_lo = (DEFAULT_SPLIT_TIMEOUT % 8000) << 19;
+ card->split_timeout_cycles = DEFAULT_SPLIT_TIMEOUT;
+ card->split_timeout_jiffies =
+ DIV_ROUND_UP(DEFAULT_SPLIT_TIMEOUT * HZ, 8000);
card->color = 0;
card->broadcast_channel = BROADCAST_CHANNEL_INITIAL;
@@ -614,6 +646,15 @@ static int dummy_queue_iso(struct fw_iso_context *ctx, struct fw_iso_packet *p,
return -ENODEV;
}
+static void dummy_flush_queue_iso(struct fw_iso_context *ctx)
+{
+}
+
+static int dummy_flush_iso_completions(struct fw_iso_context *ctx)
+{
+ return -ENODEV;
+}
+
static const struct fw_card_driver dummy_driver_template = {
.read_phy_reg = dummy_read_phy_reg,
.update_phy_reg = dummy_update_phy_reg,
@@ -625,6 +666,8 @@ static const struct fw_card_driver dummy_driver_template = {
.start_iso = dummy_start_iso,
.set_iso_channels = dummy_set_iso_channels,
.queue_iso = dummy_queue_iso,
+ .flush_queue_iso = dummy_flush_queue_iso,
+ .flush_iso_completions = dummy_flush_iso_completions,
};
void fw_card_release(struct kref *kref)
@@ -633,6 +676,7 @@ void fw_card_release(struct kref *kref)
complete(&card->done);
}
+EXPORT_SYMBOL_GPL(fw_card_release);
void fw_core_remove_card(struct fw_card *card)
{
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:16:19 +0000