diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-03 16:08:44 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-03 16:08:44 (GMT) |
commit | c1dcb4bb1e3e16e9baee578d9bb040e5fba1063e (patch) | |
tree | 1bba995740aed8ef9a47111c1ee6ceeda84af836 /drivers/firewire | |
parent | 60f8a8d4c6c46bb080e8e65d30be31b172a39a78 (diff) | |
parent | 6fdb2ee243404c7cbf530387bf904ad1841ebf5b (diff) | |
download | linux-c1dcb4bb1e3e16e9baee578d9bb040e5fba1063e.tar.xz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (23 commits)
firewire: ohci: extend initialization log message
firewire: ohci: fix IR/IT context mask mixup
firewire: ohci: add module parameter to activate quirk fixes
firewire: ohci: use an ID table for quirks detection
firewire: ohci: reorder struct fw_ohci for better cache efficiency
firewire: ohci: remove unused dualbuffer IR code
firewire: core: combine a bit of repeated code
firewire: core: change type of a data buffer
firewire: cdev: increment ABI version number
firewire: cdev: add more flexible cycle timer ioctl
firewire: core: rename an internal function
firewire: core: fix an information leak
firewire: core: increase stack size of config ROM reader
firewire: core: don't fail device creation in case of too large config ROM blocks
firewire: core: fix "giving up on config rom" with Panasonic AG-DV2500
firewire: remove incomplete Bus_Time CSR support
firewire: get_cycle_timer optimization and cleanup
firewire: ohci: enable cycle timer fix on ALi and NEC controllers
firewire: ohci: work around cycle timer bugs on VIA controllers
firewire: make PCI device id constant
...
Diffstat (limited to 'drivers/firewire')
-rw-r--r-- | drivers/firewire/core-cdev.c | 368 | ||||
-rw-r--r-- | drivers/firewire/core-device.c | 198 | ||||
-rw-r--r-- | drivers/firewire/core-transaction.c | 17 | ||||
-rw-r--r-- | drivers/firewire/core.h | 2 | ||||
-rw-r--r-- | drivers/firewire/ohci.c | 364 | ||||
-rw-r--r-- | drivers/firewire/sbp2.c | 5 |
6 files changed, 447 insertions, 507 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index 4eeaed5..8be720b 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -25,6 +25,7 @@ #include <linux/firewire.h> #include <linux/firewire-cdev.h> #include <linux/idr.h> +#include <linux/irqflags.h> #include <linux/jiffies.h> #include <linux/kernel.h> #include <linux/kref.h> @@ -32,7 +33,6 @@ #include <linux/module.h> #include <linux/mutex.h> #include <linux/poll.h> -#include <linux/preempt.h> #include <linux/sched.h> #include <linux/spinlock.h> #include <linux/string.h> @@ -368,39 +368,56 @@ void fw_device_cdev_remove(struct fw_device *device) for_each_client(device, wake_up_client); } -static int ioctl_get_info(struct client *client, void *buffer) +union ioctl_arg { + struct fw_cdev_get_info get_info; + struct fw_cdev_send_request send_request; + struct fw_cdev_allocate allocate; + struct fw_cdev_deallocate deallocate; + struct fw_cdev_send_response send_response; + struct fw_cdev_initiate_bus_reset initiate_bus_reset; + struct fw_cdev_add_descriptor add_descriptor; + struct fw_cdev_remove_descriptor remove_descriptor; + struct fw_cdev_create_iso_context create_iso_context; + struct fw_cdev_queue_iso queue_iso; + struct fw_cdev_start_iso start_iso; + struct fw_cdev_stop_iso stop_iso; + struct fw_cdev_get_cycle_timer get_cycle_timer; + struct fw_cdev_allocate_iso_resource allocate_iso_resource; + struct fw_cdev_send_stream_packet send_stream_packet; + struct fw_cdev_get_cycle_timer2 get_cycle_timer2; +}; + +static int ioctl_get_info(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_get_info *get_info = buffer; + struct fw_cdev_get_info *a = &arg->get_info; struct fw_cdev_event_bus_reset bus_reset; unsigned long ret = 0; - client->version = get_info->version; - get_info->version = FW_CDEV_VERSION; - get_info->card = client->device->card->index; + client->version = a->version; + a->version = FW_CDEV_VERSION; + a->card = client->device->card->index; down_read(&fw_device_rwsem); - if (get_info->rom != 0) { - void __user *uptr = u64_to_uptr(get_info->rom); - size_t want = get_info->rom_length; + if (a->rom != 0) { + size_t want = a->rom_length; size_t have = client->device->config_rom_length * 4; - ret = copy_to_user(uptr, client->device->config_rom, - min(want, have)); + ret = copy_to_user(u64_to_uptr(a->rom), + client->device->config_rom, min(want, have)); } - get_info->rom_length = client->device->config_rom_length * 4; + a->rom_length = client->device->config_rom_length * 4; up_read(&fw_device_rwsem); if (ret != 0) return -EFAULT; - client->bus_reset_closure = get_info->bus_reset_closure; - if (get_info->bus_reset != 0) { - void __user *uptr = u64_to_uptr(get_info->bus_reset); - + client->bus_reset_closure = a->bus_reset_closure; + if (a->bus_reset != 0) { fill_bus_reset_event(&bus_reset, client); - if (copy_to_user(uptr, &bus_reset, sizeof(bus_reset))) + if (copy_to_user(u64_to_uptr(a->bus_reset), + &bus_reset, sizeof(bus_reset))) return -EFAULT; } @@ -571,11 +588,9 @@ static int init_request(struct client *client, return ret; } -static int ioctl_send_request(struct client *client, void *buffer) +static int ioctl_send_request(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_send_request *request = buffer; - - switch (request->tcode) { + switch (arg->send_request.tcode) { case TCODE_WRITE_QUADLET_REQUEST: case TCODE_WRITE_BLOCK_REQUEST: case TCODE_READ_QUADLET_REQUEST: @@ -592,7 +607,7 @@ static int ioctl_send_request(struct client *client, void *buffer) return -EINVAL; } - return init_request(client, request, client->device->node_id, + return init_request(client, &arg->send_request, client->device->node_id, client->device->max_speed); } @@ -683,9 +698,9 @@ static void release_address_handler(struct client *client, kfree(r); } -static int ioctl_allocate(struct client *client, void *buffer) +static int ioctl_allocate(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_allocate *request = buffer; + struct fw_cdev_allocate *a = &arg->allocate; struct address_handler_resource *r; struct fw_address_region region; int ret; @@ -694,13 +709,13 @@ static int ioctl_allocate(struct client *client, void *buffer) if (r == NULL) return -ENOMEM; - region.start = request->offset; - region.end = request->offset + request->length; - r->handler.length = request->length; + region.start = a->offset; + region.end = a->offset + a->length; + r->handler.length = a->length; r->handler.address_callback = handle_request; - r->handler.callback_data = r; - r->closure = request->closure; - r->client = client; + r->handler.callback_data = r; + r->closure = a->closure; + r->client = client; ret = fw_core_add_address_handler(&r->handler, ®ion); if (ret < 0) { @@ -714,27 +729,25 @@ static int ioctl_allocate(struct client *client, void *buffer) release_address_handler(client, &r->resource); return ret; } - request->handle = r->resource.handle; + a->handle = r->resource.handle; return 0; } -static int ioctl_deallocate(struct client *client, void *buffer) +static int ioctl_deallocate(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_deallocate *request = buffer; - - return release_client_resource(client, request->handle, + return release_client_resource(client, arg->deallocate.handle, release_address_handler, NULL); } -static int ioctl_send_response(struct client *client, void *buffer) +static int ioctl_send_response(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_send_response *request = buffer; + struct fw_cdev_send_response *a = &arg->send_response; struct client_resource *resource; struct inbound_transaction_resource *r; int ret = 0; - if (release_client_resource(client, request->handle, + if (release_client_resource(client, a->handle, release_request, &resource) < 0) return -EINVAL; @@ -743,28 +756,24 @@ static int ioctl_send_response(struct client *client, void *buffer) if (is_fcp_request(r->request)) goto out; - if (request->length < r->length) - r->length = request->length; - if (copy_from_user(r->data, u64_to_uptr(request->data), r->length)) { + if (a->length < r->length) + r->length = a->length; + if (copy_from_user(r->data, u64_to_uptr(a->data), r->length)) { ret = -EFAULT; kfree(r->request); goto out; } - fw_send_response(client->device->card, r->request, request->rcode); + fw_send_response(client->device->card, r->request, a->rcode); out: kfree(r); return ret; } -static int ioctl_initiate_bus_reset(struct client *client, void *buffer) +static int ioctl_initiate_bus_reset(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_initiate_bus_reset *request = buffer; - int short_reset; - - short_reset = (request->type == FW_CDEV_SHORT_RESET); - - return fw_core_initiate_bus_reset(client->device->card, short_reset); + return fw_core_initiate_bus_reset(client->device->card, + arg->initiate_bus_reset.type == FW_CDEV_SHORT_RESET); } static void release_descriptor(struct client *client, @@ -777,9 +786,9 @@ static void release_descriptor(struct client *client, kfree(r); } -static int ioctl_add_descriptor(struct client *client, void *buffer) +static int ioctl_add_descriptor(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_add_descriptor *request = buffer; + struct fw_cdev_add_descriptor *a = &arg->add_descriptor; struct descriptor_resource *r; int ret; @@ -787,22 +796,21 @@ static int ioctl_add_descriptor(struct client *client, void *buffer) if (!client->device->is_local) return -ENOSYS; - if (request->length > 256) + if (a->length > 256) return -EINVAL; - r = kmalloc(sizeof(*r) + request->length * 4, GFP_KERNEL); + r = kmalloc(sizeof(*r) + a->length * 4, GFP_KERNEL); if (r == NULL) return -ENOMEM; - if (copy_from_user(r->data, - u64_to_uptr(request->data), request->length * 4)) { + if (copy_from_user(r->data, u64_to_uptr(a->data), a->length * 4)) { ret = -EFAULT; goto failed; } - r->descriptor.length = request->length; - r->descriptor.immediate = request->immediate; - r->descriptor.key = request->key; + r->descriptor.length = a->length; + r->descriptor.immediate = a->immediate; + r->descriptor.key = a->key; r->descriptor.data = r->data; ret = fw_core_add_descriptor(&r->descriptor); @@ -815,7 +823,7 @@ static int ioctl_add_descriptor(struct client *client, void *buffer) fw_core_remove_descriptor(&r->descriptor); goto failed; } - request->handle = r->resource.handle; + a->handle = r->resource.handle; return 0; failed: @@ -824,11 +832,9 @@ static int ioctl_add_descriptor(struct client *client, void *buffer) return ret; } -static int ioctl_remove_descriptor(struct client *client, void *buffer) +static int ioctl_remove_descriptor(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_remove_descriptor *request = buffer; - - return release_client_resource(client, request->handle, + return release_client_resource(client, arg->remove_descriptor.handle, release_descriptor, NULL); } @@ -851,49 +857,44 @@ static void iso_callback(struct fw_iso_context *context, u32 cycle, sizeof(e->interrupt) + header_length, NULL, 0); } -static int ioctl_create_iso_context(struct client *client, void *buffer) +static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_create_iso_context *request = buffer; + struct fw_cdev_create_iso_context *a = &arg->create_iso_context; struct fw_iso_context *context; /* We only support one context at this time. */ if (client->iso_context != NULL) return -EBUSY; - if (request->channel > 63) + if (a->channel > 63) return -EINVAL; - switch (request->type) { + switch (a->type) { case FW_ISO_CONTEXT_RECEIVE: - if (request->header_size < 4 || (request->header_size & 3)) + if (a->header_size < 4 || (a->header_size & 3)) return -EINVAL; - break; case FW_ISO_CONTEXT_TRANSMIT: - if (request->speed > SCODE_3200) + if (a->speed > SCODE_3200) return -EINVAL; - break; default: return -EINVAL; } - context = fw_iso_context_create(client->device->card, - request->type, - request->channel, - request->speed, - request->header_size, - iso_callback, client); + context = fw_iso_context_create(client->device->card, a->type, + a->channel, a->speed, a->header_size, + iso_callback, client); if (IS_ERR(context)) return PTR_ERR(context); - client->iso_closure = request->closure; + client->iso_closure = a->closure; client->iso_context = context; /* We only support one context at this time. */ - request->handle = 0; + a->handle = 0; return 0; } @@ -906,9 +907,9 @@ static int ioctl_create_iso_context(struct client *client, void *buffer) #define GET_SY(v) (((v) >> 20) & 0x0f) #define GET_HEADER_LENGTH(v) (((v) >> 24) & 0xff) -static int ioctl_queue_iso(struct client *client, void *buffer) +static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_queue_iso *request = buffer; + struct fw_cdev_queue_iso *a = &arg->queue_iso; struct fw_cdev_iso_packet __user *p, *end, *next; struct fw_iso_context *ctx = client->iso_context; unsigned long payload, buffer_end, header_length; @@ -919,7 +920,7 @@ static int ioctl_queue_iso(struct client *client, void *buffer) u8 header[256]; } u; - if (ctx == NULL || request->handle != 0) + if (ctx == NULL || a->handle != 0) return -EINVAL; /* @@ -929,23 +930,23 @@ static int ioctl_queue_iso(struct client *client, void *buffer) * set them both to 0, which will still let packets with * payload_length == 0 through. In other words, if no packets * use the indirect payload, the iso buffer need not be mapped - * and the request->data pointer is ignored. + * and the a->data pointer is ignored. */ - payload = (unsigned long)request->data - client->vm_start; + payload = (unsigned long)a->data - client->vm_start; buffer_end = client->buffer.page_count << PAGE_SHIFT; - if (request->data == 0 || client->buffer.pages == NULL || + if (a->data == 0 || client->buffer.pages == NULL || payload >= buffer_end) { payload = 0; buffer_end = 0; } - p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(request->packets); + p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(a->packets); - if (!access_ok(VERIFY_READ, p, request->size)) + if (!access_ok(VERIFY_READ, p, a->size)) return -EFAULT; - end = (void __user *)p + request->size; + end = (void __user *)p + a->size; count = 0; while (p < end) { if (get_user(control, &p->control)) @@ -995,61 +996,78 @@ static int ioctl_queue_iso(struct client *client, void *buffer) count++; } - request->size -= uptr_to_u64(p) - request->packets; - request->packets = uptr_to_u64(p); - request->data = client->vm_start + payload; + a->size -= uptr_to_u64(p) - a->packets; + a->packets = uptr_to_u64(p); + a->data = client->vm_start + payload; return count; } -static int ioctl_start_iso(struct client *client, void *buffer) +static int ioctl_start_iso(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_start_iso *request = buffer; + struct fw_cdev_start_iso *a = &arg->start_iso; - if (client->iso_context == NULL || request->handle != 0) + if (client->iso_context == NULL || a->handle != 0) return -EINVAL; - if (client->iso_context->type == FW_ISO_CONTEXT_RECEIVE) { - if (request->tags == 0 || request->tags > 15) - return -EINVAL; - - if (request->sync > 15) - return -EINVAL; - } + if (client->iso_context->type == FW_ISO_CONTEXT_RECEIVE && + (a->tags == 0 || a->tags > 15 || a->sync > 15)) + return -EINVAL; - return fw_iso_context_start(client->iso_context, request->cycle, - request->sync, request->tags); + return fw_iso_context_start(client->iso_context, + a->cycle, a->sync, a->tags); } -static int ioctl_stop_iso(struct client *client, void *buffer) +static int ioctl_stop_iso(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_stop_iso *request = buffer; + struct fw_cdev_stop_iso *a = &arg->stop_iso; - if (client->iso_context == NULL || request->handle != 0) + if (client->iso_context == NULL || a->handle != 0) return -EINVAL; return fw_iso_context_stop(client->iso_context); } -static int ioctl_get_cycle_timer(struct client *client, void *buffer) +static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_get_cycle_timer *request = buffer; + struct fw_cdev_get_cycle_timer2 *a = &arg->get_cycle_timer2; struct fw_card *card = client->device->card; - unsigned long long bus_time; - struct timeval tv; - unsigned long flags; + struct timespec ts = {0, 0}; + u32 cycle_time; + int ret = 0; + + local_irq_disable(); + + cycle_time = card->driver->get_cycle_time(card); - preempt_disable(); - local_irq_save(flags); + switch (a->clk_id) { + case CLOCK_REALTIME: getnstimeofday(&ts); break; + case CLOCK_MONOTONIC: do_posix_clock_monotonic_gettime(&ts); break; + case CLOCK_MONOTONIC_RAW: getrawmonotonic(&ts); break; + default: + ret = -EINVAL; + } - bus_time = card->driver->get_bus_time(card); - do_gettimeofday(&tv); + local_irq_enable(); - local_irq_restore(flags); - preempt_enable(); + a->tv_sec = ts.tv_sec; + a->tv_nsec = ts.tv_nsec; + a->cycle_timer = cycle_time; + + return ret; +} + +static int ioctl_get_cycle_timer(struct client *client, union ioctl_arg *arg) +{ + struct fw_cdev_get_cycle_timer *a = &arg->get_cycle_timer; + struct fw_cdev_get_cycle_timer2 ct2; + + ct2.clk_id = CLOCK_REALTIME; + ioctl_get_cycle_timer2(client, (union ioctl_arg *)&ct2); + + a->local_time = ct2.tv_sec * USEC_PER_SEC + ct2.tv_nsec / NSEC_PER_USEC; + a->cycle_timer = ct2.cycle_timer; - request->local_time = tv.tv_sec * 1000000ULL + tv.tv_usec; - request->cycle_timer = bus_time & 0xffffffff; return 0; } @@ -1220,33 +1238,32 @@ static int init_iso_resource(struct client *client, return ret; } -static int ioctl_allocate_iso_resource(struct client *client, void *buffer) +static int ioctl_allocate_iso_resource(struct client *client, + union ioctl_arg *arg) { - struct fw_cdev_allocate_iso_resource *request = buffer; - - return init_iso_resource(client, request, ISO_RES_ALLOC); + return init_iso_resource(client, + &arg->allocate_iso_resource, ISO_RES_ALLOC); } -static int ioctl_deallocate_iso_resource(struct client *client, void *buffer) +static int ioctl_deallocate_iso_resource(struct client *client, + union ioctl_arg *arg) { - struct fw_cdev_deallocate *request = buffer; - - return release_client_resource(client, request->handle, - release_iso_resource, NULL); + return release_client_resource(client, + arg->deallocate.handle, release_iso_resource, NULL); } -static int ioctl_allocate_iso_resource_once(struct client *client, void *buffer) +static int ioctl_allocate_iso_resource_once(struct client *client, + union ioctl_arg *arg) { - struct fw_cdev_allocate_iso_resource *request = buffer; - - return init_iso_resource(client, request, ISO_RES_ALLOC_ONCE); + return init_iso_resource(client, + &arg->allocate_iso_resource, ISO_RES_ALLOC_ONCE); } -static int ioctl_deallocate_iso_resource_once(struct client *client, void *buffer) +static int ioctl_deallocate_iso_resource_once(struct client *client, + union ioctl_arg *arg) { - struct fw_cdev_allocate_iso_resource *request = buffer; - - return init_iso_resource(client, request, ISO_RES_DEALLOC_ONCE); + return init_iso_resource(client, + &arg->allocate_iso_resource, ISO_RES_DEALLOC_ONCE); } /* @@ -1254,16 +1271,17 @@ static int ioctl_deallocate_iso_resource_once(struct client *client, void *buffe * limited by the device's link speed, the local node's link speed, * and all PHY port speeds between the two links. */ -static int ioctl_get_speed(struct client *client, void *buffer) +static int ioctl_get_speed(struct client *client, union ioctl_arg *arg) { return client->device->max_speed; } -static int ioctl_send_broadcast_request(struct client *client, void *buffer) +static int ioctl_send_broadcast_request(struct client *client, + union ioctl_arg *arg) { - struct fw_cdev_send_request *request = buffer; + struct fw_cdev_send_request *a = &arg->send_request; - switch (request->tcode) { + switch (a->tcode) { case TCODE_WRITE_QUADLET_REQUEST: case TCODE_WRITE_BLOCK_REQUEST: break; @@ -1272,36 +1290,36 @@ static int ioctl_send_broadcast_request(struct client *client, void *buffer) } /* Security policy: Only allow accesses to Units Space. */ - if (request->offset < CSR_REGISTER_BASE + CSR_CONFIG_ROM_END) + if (a->offset < CSR_REGISTER_BASE + CSR_CONFIG_ROM_END) return -EACCES; - return init_request(client, request, LOCAL_BUS | 0x3f, SCODE_100); + return init_request(client, a, LOCAL_BUS | 0x3f, SCODE_100); } -static int ioctl_send_stream_packet(struct client *client, void *buffer) +static int ioctl_send_stream_packet(struct client *client, union ioctl_arg *arg) { - struct fw_cdev_send_stream_packet *p = buffer; + struct fw_cdev_send_stream_packet *a = &arg->send_stream_packet; struct fw_cdev_send_request request; int dest; - if (p->speed > client->device->card->link_speed || - p->length > 1024 << p->speed) + if (a->speed > client->device->card->link_speed || + a->length > 1024 << a->speed) return -EIO; - if (p->tag > 3 || p->channel > 63 || p->sy > 15) + if (a->tag > 3 || a->channel > 63 || a->sy > 15) return -EINVAL; - dest = fw_stream_packet_destination_id(p->tag, p->channel, p->sy); + dest = fw_stream_packet_destination_id(a->tag, a->channel, a->sy); request.tcode = TCODE_STREAM_DATA; - request.length = p->length; - request.closure = p->closure; - request.data = p->data; - request.generation = p->generation; + request.length = a->length; + request.closure = a->closure; + request.data = a->data; + request.generation = a->generation; - return init_request(client, &request, dest, p->speed); + return init_request(client, &request, dest, a->speed); } -static int (* const ioctl_handlers[])(struct client *client, void *buffer) = { +static int (* const ioctl_handlers[])(struct client *, union ioctl_arg *) = { ioctl_get_info, ioctl_send_request, ioctl_allocate, @@ -1322,47 +1340,35 @@ static int (* const ioctl_handlers[])(struct client *client, void *buffer) = { ioctl_get_speed, ioctl_send_broadcast_request, ioctl_send_stream_packet, + ioctl_get_cycle_timer2, }; static int dispatch_ioctl(struct client *client, unsigned int cmd, void __user *arg) { - char buffer[sizeof(union { - struct fw_cdev_get_info _00; - struct fw_cdev_send_request _01; - struct fw_cdev_allocate _02; - struct fw_cdev_deallocate _03; - struct fw_cdev_send_response _04; - struct fw_cdev_initiate_bus_reset _05; - struct fw_cdev_add_descriptor _06; - struct fw_cdev_remove_descriptor _07; - struct fw_cdev_create_iso_context _08; - struct fw_cdev_queue_iso _09; - struct fw_cdev_start_iso _0a; - struct fw_cdev_stop_iso _0b; - struct fw_cdev_get_cycle_timer _0c; - struct fw_cdev_allocate_iso_resource _0d; - struct fw_cdev_send_stream_packet _13; - })]; + union ioctl_arg buffer; int ret; + if (fw_device_is_shutdown(client->device)) + return -ENODEV; + if (_IOC_TYPE(cmd) != '#' || _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers)) return -EINVAL; if (_IOC_DIR(cmd) & _IOC_WRITE) { if (_IOC_SIZE(cmd) > sizeof(buffer) || - copy_from_user(buffer, arg, _IOC_SIZE(cmd))) + copy_from_user(&buffer, arg, _IOC_SIZE(cmd))) return -EFAULT; } - ret = ioctl_handlers[_IOC_NR(cmd)](client, buffer); + ret = ioctl_handlers[_IOC_NR(cmd)](client, &buffer); if (ret < 0) return ret; if (_IOC_DIR(cmd) & _IOC_READ) { if (_IOC_SIZE(cmd) > sizeof(buffer) || - copy_to_user(arg, buffer, _IOC_SIZE(cmd))) + copy_to_user(arg, &buffer, _IOC_SIZE(cmd))) return -EFAULT; } @@ -1372,24 +1378,14 @@ static int dispatch_ioctl(struct client *client, static long fw_device_op_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - struct client *client = file->private_data; - - if (fw_device_is_shutdown(client->device)) - return -ENODEV; - - return dispatch_ioctl(client, cmd, (void __user *) arg); + return dispatch_ioctl(file->private_data, cmd, (void __user *)arg); } #ifdef CONFIG_COMPAT static long fw_device_op_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - struct client *client = file->private_data; - - if (fw_device_is_shutdown(client->device)) - return -ENODEV; - - return dispatch_ioctl(client, cmd, compat_ptr(arg)); + return dispatch_ioctl(file->private_data, cmd, compat_ptr(arg)); } #endif diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c index 9d0dfcb..014cabd 100644 --- a/drivers/firewire/core-device.c +++ b/drivers/firewire/core-device.c @@ -18,6 +18,7 @@ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <linux/bug.h> #include <linux/ctype.h> #include <linux/delay.h> #include <linux/device.h> @@ -43,7 +44,7 @@ #include "core.h" -void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 * p) +void fw_csr_iterator_init(struct fw_csr_iterator *ci, const u32 *p) { ci->p = p + 1; ci->end = ci->p + (p[0] >> 16); @@ -59,9 +60,76 @@ int fw_csr_iterator_next(struct fw_csr_iterator *ci, int *key, int *value) } EXPORT_SYMBOL(fw_csr_iterator_next); +static const u32 *search_leaf(const u32 *directory, int search_key) +{ + struct fw_csr_iterator ci; + int last_key = 0, key, value; + + fw_csr_iterator_init(&ci, directory); + while (fw_csr_iterator_next(&ci, &key, &value)) { + if (last_key == search_key && + key == (CSR_DESCRIPTOR | CSR_LEAF)) + return ci.p - 1 + value; + + last_key = key; + } + + return NULL; +} + +static int textual_leaf_to_string(const u32 *block, char *buf, size_t size) +{ + unsigned int quadlets, i; + char c; + + if (!size || !buf) + return -EINVAL; + + quadlets = min(block[0] >> 16, 256U); + if (quadlets < 2) + return -ENODATA; + + if (block[1] != 0 || block[2] != 0) + /* unknown language/character set */ + return -ENODATA; + + block += 3; + quadlets -= 2; + for (i = 0; i < quadlets * 4 && i < size - 1; i++) { + c = block[i / 4] >> (24 - 8 * (i % 4)); + if (c == '\0') + break; + buf[i] = c; + } + buf[i] = '\0'; + + return i; +} + +/** + * fw_csr_string - reads a string from the configuration ROM + * @directory: e.g. root directory or unit directory + * @key: the key of the preceding directory entry + * @buf: where to put the string + * @size: size of @buf, in bytes + * + * The string is taken from a minimal ASCII text descriptor leaf after + * the immediate entry with @key. The string is zero-terminated. + * Returns strlen(buf) or a negative error code. + */ +int fw_csr_string(const u32 *directory, int key, char *buf, size_t size) +{ + const u32 *leaf = search_leaf(directory, key); + if (!leaf) + return -ENOENT; + + return textual_leaf_to_string(leaf, buf, size); +} +EXPORT_SYMBOL(fw_csr_string); + static bool is_fw_unit(struct device *dev); -static int match_unit_directory(u32 *directory, u32 match_flags, +static int match_unit_directory(const u32 *directory, u32 match_flags, const struct ieee1394_device_id *id) { struct fw_csr_iterator ci; @@ -195,7 +263,7 @@ static ssize_t show_immediate(struct device *dev, struct config_rom_attribute *attr = container_of(dattr, struct config_rom_attribute, attr); struct fw_csr_iterator ci; - u32 *dir; + const u32 *dir; int key, value, ret = -ENOENT; down_read(&fw_device_rwsem); @@ -226,10 +294,10 @@ static ssize_t show_text_leaf(struct device *dev, { struct config_rom_attribute *attr = container_of(dattr, struct config_rom_attribute, attr); - struct fw_csr_iterator ci; - u32 *dir, *block = NULL, *p, *end; - int length, key, value, last_key = 0, ret = -ENOENT; - char *b; + const u32 *dir; + size_t bufsize; + char dummy_buf[2]; + int ret; down_read(&fw_device_rwsem); @@ -238,40 +306,23 @@ static ssize_t show_text_leaf(struct device *dev, else dir = fw_device(dev)->config_rom + 5; - fw_csr_iterator_init(&ci, dir); - while (fw_csr_iterator_next(&ci, &key, &value)) { - if (attr->key == last_key && - key == (CSR_DESCRIPTOR | CSR_LEAF)) - block = ci.p - 1 + value; - last_key = key; + if (buf) { + bufsize = PAGE_SIZE - 1; + } else { + buf = dummy_buf; + bufsize = 1; } - if (block == NULL) - goto out; - - length = min(block[0] >> 16, 256U); - if (length < 3) - goto out; - - if (block[1] != 0 || block[2] != 0) - /* Unknown encoding. */ - goto out; + ret = fw_csr_string(dir, attr->key, buf, bufsize); - if (buf == NULL) { - ret = length * 4; - goto out; + if (ret >= 0) { + /* Strip trailing whitespace and add newline. */ + while (ret > 0 && isspace(buf[ret - 1])) + ret--; + strcpy(buf + ret, "\n"); + ret++; } - b = buf; - end = &block[length + 1]; - for (p = &block[3]; p < end; p++, b += 4) - * (u32 *) b = (__force u32) __cpu_to_be32(*p); - - /* Strip trailing whitespace and add newline. */ - while (b--, (isspace(*b) || *b == '\0') && b > buf); - strcpy(b + 1, "\n"); - ret = b + 2 - buf; - out: up_read(&fw_device_rwsem); return ret; @@ -371,7 +422,7 @@ static ssize_t guid_show(struct device *dev, return ret; } -static int units_sprintf(char *buf, u32 *directory) +static int units_sprintf(char *buf, const u32 *directory) { struct fw_csr_iterator ci; int key, value; @@ -441,28 +492,29 @@ static int read_rom(struct fw_device *device, return rcode; } -#define READ_BIB_ROM_SIZE 256 -#define READ_BIB_STACK_SIZE 16 +#define MAX_CONFIG_ROM_SIZE 256 /* * Read the bus info block, perform a speed probe, and read all of the rest of * the config ROM. We do all this with a cached bus generation. If the bus - * generation changes under us, read_bus_info_block will fail and get retried. + * generation changes under us, read_config_rom will fail and get retried. * It's better to start all over in this case because the node from which we * are reading the ROM may have changed the ROM during the reset. */ -static int read_bus_info_block(struct fw_device *device, int generation) +static int read_config_rom(struct fw_device *device, int generation) { - u32 *rom, *stack, *old_rom, *new_rom; + const u32 *old_rom, *new_rom; + u32 *rom, *stack; u32 sp, key; int i, end, length, ret = -1; - rom = kmalloc(sizeof(*rom) * READ_BIB_ROM_SIZE + - sizeof(*stack) * READ_BIB_STACK_SIZE, GFP_KERNEL); + rom = kmalloc(sizeof(*rom) * MAX_CONFIG_ROM_SIZE + + sizeof(*stack) * MAX_CONFIG_ROM_SIZE, GFP_KERNEL); if (rom == NULL) return -ENOMEM; - stack = &rom[READ_BIB_ROM_SIZE]; + stack = &rom[MAX_CONFIG_ROM_SIZE]; + memset(rom, 0, sizeof(*rom) * MAX_CONFIG_ROM_SIZE); device->max_speed = SCODE_100; @@ -529,40 +581,54 @@ static int read_bus_info_block(struct fw_device *device, int generation) */ key = stack[--sp]; i = key & 0xffffff; - if (i >= READ_BIB_ROM_SIZE) - /* - * The reference points outside the standard - * config rom area, something's fishy. - */ + if (WARN_ON(i >= MAX_CONFIG_ROM_SIZE)) goto out; /* Read header quadlet for the block to get the length. */ if (read_rom(device, generation, i, &rom[i]) != RCODE_COMPLETE) goto out; end = i + (rom[i] >> 16) + 1; - i++; - if (end > READ_BIB_ROM_SIZE) + if (end > MAX_CONFIG_ROM_SIZE) { /* - * This block extends outside standard config - * area (and the array we're reading it - * into). That's broken, so ignore this - * device. + * This block extends outside the config ROM which is + * a firmware bug. Ignore this whole block, i.e. + * simply set a fake block length of 0. */ - goto out; + fw_error("skipped invalid ROM block %x at %llx\n", + rom[i], + i * 4 | CSR_REGISTER_BASE | CSR_CONFIG_ROM); + rom[i] = 0; + end = i; + } + i++; /* * Now read in the block. If this is a directory * block, check the entries as we read them to see if * it references another block, and push it in that case. */ - while (i < end) { + for (; i < end; i++) { if (read_rom(device, generation, i, &rom[i]) != RCODE_COMPLETE) goto out; - if ((key >> 30) == 3 && (rom[i] >> 30) > 1 && - sp < READ_BIB_STACK_SIZE) - stack[sp++] = i + rom[i]; - i++; + + if ((key >> 30) != 3 || (rom[i] >> 30) < 2) + continue; + /* + * Offset points outside the ROM. May be a firmware + * bug or an Extended ROM entry (IEEE 1212-2001 clause + * 7.7.18). Simply overwrite this pointer here by a + * fake immediate entry so that later iterators over + * the ROM don't have to check offsets all the time. + */ + if (i + (rom[i] & 0xffffff) >= MAX_CONFIG_ROM_SIZE) { + fw_error("skipped unsupported ROM entry %x at %llx\n", + rom[i], + i * 4 | CSR_REGISTER_BASE | CSR_CONFIG_ROM); + rom[i] = 0; + continue; + } + stack[sp++] = i + rom[i]; } if (length < i) length = i; @@ -905,7 +971,7 @@ static void fw_device_init(struct work_struct *work) * device. */ - if (read_bus_info_block(device, device->generation) < 0) { + if (read_config_rom(device, device->generation) < 0) { if (device->config_rom_retries < MAX_RETRIES && atomic_read(&device->state) == FW_DEVICE_INITIALIZING) { device->config_rom_retries++; @@ -1022,7 +1088,7 @@ enum { }; /* Reread and compare bus info block and header of root directory */ -static int reread_bus_info_block(struct fw_device *device, int generation) +static int reread_config_rom(struct fw_device *device, int generation) { u32 q; int i; @@ -1048,7 +1114,7 @@ static void fw_device_refresh(struct work_struct *work) struct fw_card *card = device->card; int node_id = device->node_id; - switch (reread_bus_info_block(device, device->generation)) { + switch (reread_config_rom(device, device->generation)) { case REREAD_BIB_ERROR: if (device->config_rom_retries < MAX_RETRIES / 2 && atomic_read(&device->state) == FW_DEVICE_INITIALIZING) { @@ -1082,7 +1148,7 @@ static void fw_device_refresh(struct work_struct *work) */ device_for_each_child(&device->device, NULL, shutdown_unit); - if (read_bus_info_block(device, device->generation) < 0) { + if (read_config_rom(device, device->generation) < 0) { if (device->config_rom_retries < MAX_RETRIES && atomic_read(&device->state) == FW_DEVICE_INITIALIZING) { device->config_rom_retries++; diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index 495849e..673b03f 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -921,23 +921,15 @@ static void handle_registers(struct fw_card *card, struct fw_request *request, void *payload, size_t length, void *callback_data) { int reg = offset & ~CSR_REGISTER_BASE; - unsigned long long bus_time; __be32 *data = payload; int rcode = RCODE_COMPLETE; switch (reg) { case CSR_CYCLE_TIME: - case CSR_BUS_TIME: - if (!TCODE_IS_READ_REQUEST(tcode) || length != 4) { - rcode = RCODE_TYPE_ERROR; - break; - } - - bus_time = card->driver->get_bus_time(card); - if (reg == CSR_CYCLE_TIME) - *data = cpu_to_be32(bus_time); + if (TCODE_IS_READ_REQUEST(tcode) && length == 4) + *data = cpu_to_be32(card->driver->get_cycle_time(card)); else - *data = cpu_to_be32(bus_time >> 25); + rcode = RCODE_TYPE_ERROR; break; case CSR_BROADCAST_CHANNEL: @@ -968,6 +960,9 @@ static void handle_registers(struct fw_card *card, struct fw_request *request, case CSR_BUSY_TIMEOUT: /* FIXME: Implement this. */ + case CSR_BUS_TIME: + /* Useless without initialization by the bus manager. */ + default: rcode = RCODE_ADDRESS_ERROR; break; diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h index ed3b1a7..fb03213 100644 --- a/drivers/firewire/core.h +++ b/drivers/firewire/core.h @@ -70,7 +70,7 @@ struct fw_card_driver { int (*enable_phys_dma)(struct fw_card *card, int node_id, int generation); - u64 (*get_bus_time)(struct fw_card *card); + u32 (*get_cycle_time)(struct fw_card *card); struct fw_iso_context * (*allocate_iso_context)(struct fw_card *card, diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 43ebf33..75dc698 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -38,7 +38,6 @@ #include <linux/spinlock.h> #include <linux/string.h> -#include <asm/atomic.h> #include <asm/byteorder.h> #include <asm/page.h> #include <asm/system.h> @@ -73,20 +72,6 @@ struct descriptor { __le16 transfer_status; } __attribute__((aligned(16))); -struct db_descriptor { - __le16 first_size; - __le16 control; - __le16 second_req_count; - __le16 first_req_count; - __le32 branch_address; - __le16 second_res_count; - __le16 first_res_count; - __le32 reserved0; - __le32 first_buffer; - __le32 second_buffer; - __le32 reserved1; -} __attribute__((aligned(16))); - #define CONTROL_SET(regs) (regs) #define CONTROL_CLEAR(regs) ((regs) + 4) #define COMMAND_PTR(regs) ((regs) + 12) @@ -181,31 +166,16 @@ struct fw_ohci { struct fw_card card; __iomem char *registers; - dma_addr_t self_id_bus; - __le32 *self_id_cpu; - struct tasklet_struct bus_reset_tasklet; int node_id; int generation; int request_generation; /* for timestamping incoming requests */ - atomic_t bus_seconds; - - bool use_dualbuffer; - bool old_uninorth; - bool bus_reset_packet_quirk; + unsigned quirks; /* * Spinlock for accessing fw_ohci data. Never call out of * this driver with this lock held. */ spinlock_t lock; - u32 self_id_buffer[512]; - - /* Config rom buffers */ - __be32 *config_rom; - dma_addr_t config_rom_bus; - __be32 *next_config_rom; - dma_addr_t next_config_rom_bus; - __be32 next_header; struct ar_context ar_request_ctx; struct ar_context ar_response_ctx; @@ -217,6 +187,18 @@ struct fw_ohci { u64 ir_context_channels; u32 ir_context_mask; struct iso_context *ir_context_list; + + __be32 *config_rom; + dma_addr_t config_rom_bus; + __be32 *next_config_rom; + dma_addr_t next_config_rom_bus; + __be32 next_header; + + __le32 *self_id_cpu; + dma_addr_t self_id_bus; + struct tasklet_struct bus_reset_tasklet; + + u32 self_id_buffer[512]; }; static inline struct fw_ohci *fw_ohci(struct fw_card *card) @@ -249,6 +231,30 @@ static inline struct fw_ohci *fw_ohci(struct fw_card *card) static char ohci_driver_name[] = KBUILD_MODNAME; +#define QUIRK_CYCLE_TIMER 1 +#define QUIRK_RESET_PACKET 2 +#define QUIRK_BE_HEADERS 4 + +/* In case of multiple matches in ohci_quirks[], only the first one is used. */ +static const struct { + unsigned short vendor, device, flags; +} ohci_quirks[] = { + {PCI_VENDOR_ID_TI, PCI_ANY_ID, QUIRK_RESET_PACKET}, + {PCI_VENDOR_ID_AL, PCI_ANY_ID, QUIRK_CYCLE_TIMER}, + {PCI_VENDOR_ID_NEC, PCI_ANY_ID, QUIRK_CYCLE_TIMER}, + {PCI_VENDOR_ID_VIA, PCI_ANY_ID, QUIRK_CYCLE_TIMER}, + {PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_FW, QUIRK_BE_HEADERS}, +}; + +/* This overrides anything that was found in ohci_quirks[]. */ +static int param_quirks; +module_param_named(quirks, param_quirks, int, 0644); +MODULE_PARM_DESC(quirks, "Chip quirks (default = 0" + ", nonatomic cycle timer = " __stringify(QUIRK_CYCLE_TIMER) + ", reset packet generation = " __stringify(QUIRK_RESET_PACKET) + ", AR/selfID endianess = " __stringify(QUIRK_BE_HEADERS) + ")"); + #ifdef CONFIG_FIREWIRE_OHCI_DEBUG #define OHCI_PARAM_DEBUG_AT_AR 1 @@ -275,7 +281,7 @@ static void log_irqs(u32 evt) !(evt & OHCI1394_busReset)) return; - fw_notify("IRQ %08x%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", evt, + fw_notify("IRQ %08x%s%s%s%s%s%s%s%s%s%s%s%s%s\n", evt, evt & OHCI1394_selfIDComplete ? " selfID" : "", evt & OHCI1394_RQPkt ? " AR_req" : "", evt & OHCI1394_RSPkt ? " AR_resp" : "", @@ -285,7 +291,6 @@ static void log_irqs(u32 evt) evt & OHCI1394_isochTx ? " IT" : "", evt & OHCI1394_postedWriteErr ? " postedWriteErr" : "", evt & OHCI1394_cycleTooLong ? " cycleTooLong" : "", - evt & OHCI1394_cycle64Seconds ? " cycle64Seconds" : "", evt & OHCI1394_cycleInconsistent ? " cycleInconsistent" : "", evt & OHCI1394_regAccessFail ? " regAccessFail" : "", evt & OHCI1394_busReset ? " busReset" : "", @@ -293,8 +298,7 @@ static void log_irqs(u32 evt) OHCI1394_RSPkt | OHCI1394_reqTxComplete | OHCI1394_respTxComplete | OHCI1394_isochRx | OHCI1394_isochTx | OHCI1394_postedWriteErr | - OHCI1394_cycleTooLong | OHCI1394_cycle64Seconds | - OHCI1394_cycleInconsistent | + OHCI1394_cycleTooLong | OHCI1394_cycleInconsistent | OHCI1394_regAccessFail | OHCI1394_busReset) ? " ?" : ""); } @@ -524,7 +528,7 @@ static void ar_context_release(struct ar_context *ctx) #if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32) #define cond_le32_to_cpu(v) \ - (ohci->old_uninorth ? (__force __u32)(v) : le32_to_cpu(v)) + (ohci->quirks & QUIRK_BE_HEADERS ? (__force __u32)(v) : le32_to_cpu(v)) #else #define cond_le32_to_cpu(v) le32_to_cpu(v) #endif @@ -605,7 +609,7 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer) * at a slightly incorrect time (in bus_reset_tasklet). */ if (evt == OHCI1394_evt_bus_reset) { - if (!ohci->bus_reset_packet_quirk) + if (!(ohci->quirks & QUIRK_RESET_PACKET)) ohci->request_generation = (p.header[2] >> 16) & 0xff; } else if (ctx == &ohci->ar_request_ctx) { fw_core_handle_request(&ohci->card, &p); @@ -1329,7 +1333,7 @@ static void bus_reset_tasklet(unsigned long data) context_stop(&ohci->at_response_ctx); reg_write(ohci, OHCI1394_IntEventClear, OHCI1394_busReset); - if (ohci->bus_reset_packet_quirk) + if (ohci->quirks & QUIRK_RESET_PACKET) ohci->request_generation = generation; /* @@ -1384,7 +1388,7 @@ static void bus_reset_tasklet(unsigned long data) static irqreturn_t irq_handler(int irq, void *data) { struct fw_ohci *ohci = data; - u32 event, iso_event, cycle_time; + u32 event, iso_event; int i; event = reg_read(ohci, OHCI1394_IntEventClear); @@ -1454,12 +1458,6 @@ static irqreturn_t irq_handler(int irq, void *data) fw_notify("isochronous cycle inconsistent\n"); } - if (event & OHCI1394_cycle64Seconds) { - cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer); - if ((cycle_time & 0x80000000) == 0) - atomic_inc(&ohci->bus_seconds); - } - return IRQ_HANDLED; } @@ -1553,8 +1551,7 @@ static int ohci_enable(struct fw_card *card, OHCI1394_reqTxComplete | OHCI1394_respTxComplete | OHCI1394_isochRx | OHCI1394_isochTx | OHCI1394_postedWriteErr | OHCI1394_cycleTooLong | - OHCI1394_cycleInconsistent | - OHCI1394_cycle64Seconds | OHCI1394_regAccessFail | + OHCI1394_cycleInconsistent | OHCI1394_regAccessFail | OHCI1394_masterIntEnable); if (param_debug & OHCI_PARAM_DEBUG_BUSRESETS) reg_write(ohci, OHCI1394_IntMaskSet, OHCI1394_busReset); @@ -1794,16 +1791,61 @@ static int ohci_enable_phys_dma(struct fw_card *card, #endif /* CONFIG_FIREWIRE_OHCI_REMOTE_DMA */ } -static u64 ohci_get_bus_time(struct fw_card *card) +static u32 cycle_timer_ticks(u32 cycle_timer) { - struct fw_ohci *ohci = fw_ohci(card); - u32 cycle_time; - u64 bus_time; + u32 ticks; - cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer); - bus_time = ((u64)atomic_read(&ohci->bus_seconds) << 32) | cycle_time; + ticks = cycle_timer & 0xfff; + ticks += 3072 * ((cycle_timer >> 12) & 0x1fff); + ticks += (3072 * 8000) * (cycle_timer >> 25); + + return ticks; +} + +/* + * Some controllers exhibit one or more of the following bugs when updating the + * iso cycle timer register: + * - When the lowest six bits are wrapping around to zero, a read that happens + * at the same time will return garbage in the lowest ten bits. + * - When the cycleOffset field wraps around to zero, the cycleCount field is + * not incremented for about 60 ns. + * - Occasionally, the entire register reads zero. + * + * To catch these, we read the register three times and ensure that the + * difference between each two consecutive reads is approximately the same, i.e. + * less than twice the other. Furthermore, any negative difference indicates an + * error. (A PCI read should take at least 20 ticks of the 24.576 MHz timer to + * execute, so we have enough precision to compute the ratio of the differences.) + */ +static u32 ohci_get_cycle_time(struct fw_card *card) +{ + struct fw_ohci *ohci = fw_ohci(card); + u32 c0, c1, c2; + u32 t0, t1, t2; + s32 diff01, diff12; + int i; - return bus_time; + c2 = reg_read(ohci, OHCI1394_IsochronousCycleTimer); + + if (ohci->quirks & QUIRK_CYCLE_TIMER) { + i = 0; + c1 = c2; + c2 = reg_read(ohci, OHCI1394_IsochronousCycleTimer); + do { + c0 = c1; + c1 = c2; + c2 = reg_read(ohci, OHCI1394_IsochronousCycleTimer); + t0 = cycle_timer_ticks(c0); + t1 = cycle_timer_ticks(c1); + t2 = cycle_timer_ticks(c2); + diff01 = t1 - t0; + diff12 = t2 - t1; + } while ((diff01 <= 0 || diff12 <= 0 || + diff01 / diff12 >= 2 || diff12 / diff01 >= 2) + && i++ < 20); + } + + return c2; } static void copy_iso_headers(struct iso_context *ctx, void *p) @@ -1828,52 +1870,6 @@ static void copy_iso_headers(struct iso_context *ctx, void *p) ctx->header_length += ctx->base.header_size; } -static int handle_ir_dualbuffer_packet(struct context *context, - struct descriptor *d, - struct descriptor *last) -{ - struct iso_context *ctx = - container_of(context, struct iso_context, context); - struct db_descriptor *db = (struct db_descriptor *) d; - __le32 *ir_header; - size_t header_length; - void *p, *end; - - if (db->first_res_count != 0 && db->second_res_count != 0) { - if (ctx->excess_bytes <= le16_to_cpu(db->second_req_count)) { - /* This descriptor isn't done yet, stop iteration. */ - return 0; - } - ctx->excess_bytes -= le16_to_cpu(db->second_req_count); - } - - header_length = le16_to_cpu(db->first_req_count) - - le16_to_cpu(db->first_res_count); - - p = db + 1; - end = p + header_length; - while (p < end) { - copy_iso_headers(ctx, p); - ctx->excess_bytes += - (le32_to_cpu(*(__le32 *)(p + 4)) >> 16) & 0xffff; - p += max(ctx->base.header_size, (size_t)8); - } - - ctx->excess_bytes -= le16_to_cpu(db->second_req_count) - - le16_to_cpu(db->second_res_count); - - if (le16_to_cpu(db->control) & DESCRIPTOR_IRQ_ALWAYS) { - ir_header = (__le32 *) (db + 1); - ctx->base.callback(&ctx->base, - le32_to_cpu(ir_header[0]) & 0xffff, - ctx->header_length, ctx->header, - ctx->base.callback_data); - ctx->header_length = 0; - } - - return 1; -} - static int handle_ir_packet_per_buffer(struct context *context, struct descriptor *d, struct descriptor *last) @@ -1960,10 +1956,7 @@ static struct fw_iso_context *ohci_allocate_iso_context(struct fw_card *card, channels = &ohci->ir_context_channels; mask = &ohci->ir_context_mask; list = ohci->ir_context_list; - if (ohci->use_dualbuffer) - callback = handle_ir_dualbuffer_packet; - else - callback = handle_ir_packet_per_buffer; + callback = handle_ir_packet_per_buffer; } spin_lock_irqsave(&ohci->lock, flags); @@ -2026,8 +2019,6 @@ static int ohci_start_iso(struct fw_iso_context *base, } else { index = ctx - ohci->ir_context_list; control = IR_CONTEXT_ISOCH_HEADER; - if (ohci->use_dualbuffer) - control |= IR_CONTEXT_DUAL_BUFFER_MODE; match = (tags << 28) | (sync << 8) | ctx->base.channel; if (cycle >= 0) { match |= (cycle & 0x07fff) << 12; @@ -2188,92 +2179,6 @@ static int ohci_queue_iso_transmit(struct fw_iso_context *base, return 0; } -static int ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base, - struct fw_iso_packet *packet, - struct fw_iso_buffer *buffer, - unsigned long payload) -{ - struct iso_context *ctx = container_of(base, struct iso_context, base); - struct db_descriptor *db = NULL; - struct descriptor *d; - struct fw_iso_packet *p; - dma_addr_t d_bus, page_bus; - u32 z, header_z, length, rest; - int page, offset, packet_count, header_size; - - /* - * FIXME: Cycle lost behavior should be configurable: lose - * packet, retransmit or terminate.. - */ - - p = packet; - z = 2; - - /* - * The OHCI controller puts the isochronous header and trailer in the - * buffer, so we need at least 8 bytes. - */ - packet_count = p->header_length / ctx->base.header_size; - header_size = packet_count * max(ctx->base.header_size, (size_t)8); - - /* Get header size in number of descriptors. */ - header_z = DIV_ROUND_UP(header_size, sizeof(*d)); - page = payload >> PAGE_SHIFT; - offset = payload & ~PAGE_MASK; - rest = p->payload_length; - /* - * The controllers I've tested have not worked correctly when - * second_req_count is zero. Rather than do something we know won't - * work, return an error - */ - if (rest == 0) - return -EINVAL; - - while (rest > 0) { - d = context_get_descriptors(&ctx->context, - z + header_z, &d_bus); - if (d == NULL) - return -ENOMEM; - - db = (struct db_descriptor *) d; - db->control = cpu_to_le16(DESCRIPTOR_STATUS | - DESCRIPTOR_BRANCH_ALWAYS); - db->first_size = - cpu_to_le16(max(ctx->base.header_size, (size_t)8)); - if (p->skip && rest == p->payload_length) { - db->control |= cpu_to_le16(DESCRIPTOR_WAIT); - db->first_req_count = db->first_size; - } else { - db->first_req_count = cpu_to_le16(header_size); - } - db->first_res_count = db->first_req_count; - db->first_buffer = cpu_to_le32(d_bus + sizeof(*db)); - - if (p->skip && rest == p->payload_length) - length = 4; - else if (offset + rest < PAGE_SIZE) - length = rest; - else - length = PAGE_SIZE - offset; - - db->second_req_count = cpu_to_le16(length); - db->second_res_count = db->second_req_count; - page_bus = page_private(buffer->pages[page]); - db->second_buffer = cpu_to_le32(page_bus + offset); - - if (p->interrupt && length == rest) - db->control |= cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS); - - context_append(&ctx->context, d, z, header_z); - offset = (offset + length) & ~PAGE_MASK; - rest -= length; - if (offset == 0) - page++; - } - - return 0; -} - static int ohci_queue_iso_receive_packet_per_buffer(struct fw_iso_context *base, struct fw_iso_packet *packet, struct fw_iso_buffer *buffer, @@ -2364,9 +2269,6 @@ static int ohci_queue_iso(struct fw_iso_context *base, spin_lock_irqsave(&ctx->context.ohci->lock, flags); if (base->type == FW_ISO_CONTEXT_TRANSMIT) ret = ohci_queue_iso_transmit(base, packet, buffer, payload); - else if (ctx->context.ohci->use_dualbuffer) - ret = ohci_queue_iso_receive_dualbuffer(base, packet, - buffer, payload); else ret = ohci_queue_iso_receive_packet_per_buffer(base, packet, buffer, payload); @@ -2383,7 +2285,7 @@ static const struct fw_card_driver ohci_driver = { .send_response = ohci_send_response, .cancel_packet = ohci_cancel_packet, .enable_phys_dma = ohci_enable_phys_dma, - .get_bus_time = ohci_get_bus_time, + .get_cycle_time = ohci_get_cycle_time, .allocate_iso_context = ohci_allocate_iso_context, .free_iso_context = ohci_free_iso_context, @@ -2421,17 +2323,13 @@ static void ohci_pmac_off(struct pci_dev *dev) #define ohci_pmac_off(dev) #endif /* CONFIG_PPC_PMAC */ -#define PCI_VENDOR_ID_AGERE PCI_VENDOR_ID_ATT -#define PCI_DEVICE_ID_AGERE_FW643 0x5901 -#define PCI_DEVICE_ID_TI_TSB43AB23 0x8024 - static int __devinit pci_probe(struct pci_dev *dev, const struct pci_device_id *ent) { struct fw_ohci *ohci; u32 bus_options, max_receive, link_speed, version; u64 guid; - int err; + int i, err, n_ir, n_it; size_t size; ohci = kzalloc(sizeof(*ohci), GFP_KERNEL); @@ -2472,36 +2370,15 @@ static int __devinit pci_probe(struct pci_dev *dev, goto fail_iomem; } - version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff; -#if 0 - /* FIXME: make it a context option or remove dual-buffer mode */ - ohci->use_dualbuffer = version >= OHCI_VERSION_1_1; -#endif - - /* dual-buffer mode is broken if more than one IR context is active */ - if (dev->vendor == PCI_VENDOR_ID_AGERE && - dev->device == PCI_DEVICE_ID_AGERE_FW643) - ohci->use_dualbuffer = false; - - /* dual-buffer mode is broken */ - if (dev->vendor == PCI_VENDOR_ID_RICOH && - dev->device == PCI_DEVICE_ID_RICOH_R5C832) - ohci->use_dualbuffer = false; - -/* x86-32 currently doesn't use highmem for dma_alloc_coherent */ -#if !defined(CONFIG_X86_32) - /* dual-buffer mode is broken with descriptor addresses above 2G */ - if (dev->vendor == PCI_VENDOR_ID_TI && - (dev->device == PCI_DEVICE_ID_TI_TSB43AB22 || - dev->device == PCI_DEVICE_ID_TI_TSB43AB23)) - ohci->use_dualbuffer = false; -#endif - -#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32) - ohci->old_uninorth = dev->vendor == PCI_VENDOR_ID_APPLE && - dev->device == PCI_DEVICE_ID_APPLE_UNI_N_FW; -#endif - ohci->bus_reset_packet_quirk = dev->vendor == PCI_VENDOR_ID_TI; + for (i = 0; i < ARRAY_SIZE(ohci_quirks); i++) + if (ohci_quirks[i].vendor == dev->vendor && + (ohci_quirks[i].device == dev->device || + ohci_quirks[i].device == (unsigned short)PCI_ANY_ID)) { + ohci->quirks = ohci_quirks[i].flags; + break; + } + if (param_quirks) + ohci->quirks = param_quirks; ar_context_init(&ohci->ar_request_ctx, ohci, OHCI1394_AsReqRcvContextControlSet); @@ -2516,17 +2393,19 @@ static int __devinit pci_probe(struct pci_dev *dev, OHCI1394_AsRspTrContextControlSet, handle_at_packet); reg_write(ohci, OHCI1394_IsoRecvIntMaskSet, ~0); - ohci->it_context_mask = reg_read(ohci, OHCI1394_IsoRecvIntMaskSet); + ohci->ir_context_channels = ~0ULL; + ohci->ir_context_mask = reg_read(ohci, OHCI1394_IsoRecvIntMaskSet); reg_write(ohci, OHCI1394_IsoRecvIntMaskClear, ~0); - size = sizeof(struct iso_context) * hweight32(ohci->it_context_mask); - ohci->it_context_list = kzalloc(size, GFP_KERNEL); + n_ir = hweight32(ohci->ir_context_mask); + size = sizeof(struct iso_context) * n_ir; + ohci->ir_context_list = kzalloc(size, GFP_KERNEL); reg_write(ohci, OHCI1394_IsoXmitIntMaskSet, ~0); - ohci->ir_context_channels = ~0ULL; - ohci->ir_context_mask = reg_read(ohci, OHCI1394_IsoXmitIntMaskSet); + ohci->it_context_mask = reg_read(ohci, OHCI1394_IsoXmitIntMaskSet); reg_write(ohci, OHCI1394_IsoXmitIntMaskClear, ~0); - size = sizeof(struct iso_context) * hweight32(ohci->ir_context_mask); - ohci->ir_context_list = kzalloc(size, GFP_KERNEL); + n_it = hweight32(ohci->it_context_mask); + size = sizeof(struct iso_context) * n_it; + ohci->it_context_list = kzalloc(size, GFP_KERNEL); if (ohci->it_context_list == NULL || ohci->ir_context_list == NULL) { err = -ENOMEM; @@ -2553,8 +2432,11 @@ static int __devinit pci_probe(struct pci_dev *dev, if (err) goto fail_self_id; - fw_notify("Added fw-ohci device %s, OHCI version %x.%x\n", - dev_name(&dev->dev), version >> 16, version & 0xff); + version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff; + fw_notify("Added fw-ohci device %s, OHCI v%x.%x, " + "%d IR + %d IT contexts, quirks 0x%x\n", + dev_name(&dev->dev), version >> 16, version & 0xff, + n_ir, n_it, ohci->quirks); return 0; @@ -2662,7 +2544,7 @@ static int pci_resume(struct pci_dev *dev) } #endif -static struct pci_device_id pci_table[] = { +static const struct pci_device_id pci_table[] = { { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_FIREWIRE_OHCI, ~0) }, { } }; diff --git a/drivers/firewire/sbp2.c b/drivers/firewire/sbp2.c index 70fef40..ca264f2 100644 --- a/drivers/firewire/sbp2.c +++ b/drivers/firewire/sbp2.c @@ -1014,7 +1014,8 @@ static int sbp2_add_logical_unit(struct sbp2_target *tgt, int lun_entry) return 0; } -static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, u32 *directory) +static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, + const u32 *directory) { struct fw_csr_iterator ci; int key, value; @@ -1027,7 +1028,7 @@ static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, u32 *directory) return 0; } -static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory, +static int sbp2_scan_unit_dir(struct sbp2_target *tgt, const u32 *directory, u32 *model, u32 *firmware_revision) { struct fw_csr_iterator ci; |