u32 it_context_mask;
struct iso_context *it_context_list;
+ u64 ir_context_channels;
u32 ir_context_mask;
struct iso_context *ir_context_list;
};
reg_read(ohci, OHCI1394_Version);
}
-static int
-ohci_update_phy_reg(struct fw_card *card, int addr,
- int clear_bits, int set_bits)
+static int ohci_update_phy_reg(struct fw_card *card, int addr,
+ int clear_bits, int set_bits)
{
struct fw_ohci *ohci = fw_ohci(card);
u32 val, old;
}
}
-static int
-ar_context_init(struct ar_context *ctx, struct fw_ohci *ohci, u32 regs)
+static int ar_context_init(struct ar_context *ctx,
+ struct fw_ohci *ohci, u32 regs)
{
struct ar_buffer ab;
flush_writes(ctx->ohci);
}
-static struct descriptor *
-find_branch_descriptor(struct descriptor *d, int z)
+static struct descriptor *find_branch_descriptor(struct descriptor *d, int z)
{
int b, key;
* Allocate a new buffer and add it to the list of free buffers for this
* context. Must be called with ohci->lock held.
*/
-static int
-context_add_buffer(struct context *ctx)
+static int context_add_buffer(struct context *ctx)
{
struct descriptor_buffer *desc;
dma_addr_t uninitialized_var(bus_addr);
return 0;
}
-static int
-context_init(struct context *ctx, struct fw_ohci *ohci,
- u32 regs, descriptor_callback_t callback)
+static int context_init(struct context *ctx, struct fw_ohci *ohci,
+ u32 regs, descriptor_callback_t callback)
{
ctx->ohci = ohci;
ctx->regs = regs;
return 0;
}
-static void
-context_release(struct context *ctx)
+static void context_release(struct context *ctx)
{
struct fw_card *card = &ctx->ohci->card;
struct descriptor_buffer *desc, *tmp;
}
/* Must be called with ohci->lock held */
-static struct descriptor *
-context_get_descriptors(struct context *ctx, int z, dma_addr_t *d_bus)
+static struct descriptor *context_get_descriptors(struct context *ctx,
+ int z, dma_addr_t *d_bus)
{
struct descriptor *d = NULL;
struct descriptor_buffer *desc = ctx->buffer_tail;
* Must always be called with the ochi->lock held to ensure proper
* generation handling and locking around packet queue manipulation.
*/
-static int
-at_context_queue_packet(struct context *ctx, struct fw_packet *packet)
+static int at_context_queue_packet(struct context *ctx,
+ struct fw_packet *packet)
{
struct fw_ohci *ohci = ctx->ohci;
dma_addr_t d_bus, uninitialized_var(payload_bus);
*/
header = (__le32 *) &d[1];
- if (packet->header_length > 8) {
+ switch (packet->header_length) {
+ case 16:
+ case 12:
header[0] = cpu_to_le32((packet->header[0] & 0xffff) |
(packet->speed << 16));
header[1] = cpu_to_le32((packet->header[1] & 0xffff) |
header[3] = (__force __le32) packet->header[3];
d[0].req_count = cpu_to_le16(packet->header_length);
- } else {
+ break;
+
+ case 8:
header[0] = cpu_to_le32((OHCI1394_phy_tcode << 4) |
(packet->speed << 16));
header[1] = cpu_to_le32(packet->header[0]);
header[2] = cpu_to_le32(packet->header[1]);
d[0].req_count = cpu_to_le16(12);
+ break;
+
+ case 4:
+ header[0] = cpu_to_le32((packet->header[0] & 0xffff) |
+ (packet->speed << 16));
+ header[1] = cpu_to_le32(packet->header[0] & 0xffff0000);
+ d[0].req_count = cpu_to_le16(8);
+ break;
+
+ default:
+ /* BUG(); */
+ packet->ack = RCODE_SEND_ERROR;
+ return -1;
}
driver_data = (struct driver_data *) &d[3];
#define HEADER_GET_DATA_LENGTH(q) (((q) >> 16) & 0xffff)
#define HEADER_GET_EXTENDED_TCODE(q) (((q) >> 0) & 0xffff)
-static void
-handle_local_rom(struct fw_ohci *ohci, struct fw_packet *packet, u32 csr)
+static void handle_local_rom(struct fw_ohci *ohci,
+ struct fw_packet *packet, u32 csr)
{
struct fw_packet response;
int tcode, length, i;
fw_core_handle_response(&ohci->card, &response);
}
-static void
-handle_local_lock(struct fw_ohci *ohci, struct fw_packet *packet, u32 csr)
+static void handle_local_lock(struct fw_ohci *ohci,
+ struct fw_packet *packet, u32 csr)
{
struct fw_packet response;
int tcode, length, ext_tcode, sel;
fw_core_handle_response(&ohci->card, &response);
}
-static void
-handle_local_request(struct context *ctx, struct fw_packet *packet)
+static void handle_local_request(struct context *ctx, struct fw_packet *packet)
{
u64 offset;
u32 csr;
}
}
-static void
-at_context_transmit(struct context *ctx, struct fw_packet *packet)
+static void at_context_transmit(struct context *ctx, struct fw_packet *packet)
{
unsigned long flags;
- int retval;
+ int ret;
spin_lock_irqsave(&ctx->ohci->lock, flags);
return;
}
- retval = at_context_queue_packet(ctx, packet);
+ ret = at_context_queue_packet(ctx, packet);
spin_unlock_irqrestore(&ctx->ohci->lock, flags);
- if (retval < 0)
+ if (ret < 0)
packet->callback(packet, &ctx->ohci->card, packet->ack);
}
return 0;
}
-static int
-ohci_set_config_rom(struct fw_card *card, u32 *config_rom, size_t length)
+static int ohci_set_config_rom(struct fw_card *card,
+ u32 *config_rom, size_t length)
{
struct fw_ohci *ohci;
unsigned long flags;
- int retval = -EBUSY;
+ int ret = -EBUSY;
__be32 *next_config_rom;
dma_addr_t uninitialized_var(next_config_rom_bus);
reg_write(ohci, OHCI1394_ConfigROMmap,
ohci->next_config_rom_bus);
- retval = 0;
+ ret = 0;
}
spin_unlock_irqrestore(&ohci->lock, flags);
* controller could need to access it before the bus reset
* takes effect.
*/
- if (retval == 0)
+ if (ret == 0)
fw_core_initiate_bus_reset(&ohci->card, 1);
else
dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
next_config_rom, next_config_rom_bus);
- return retval;
+ return ret;
}
static void ohci_send_request(struct fw_card *card, struct fw_packet *packet)
struct fw_ohci *ohci = fw_ohci(card);
struct context *ctx = &ohci->at_request_ctx;
struct driver_data *driver_data = packet->driver_data;
- int retval = -ENOENT;
+ int ret = -ENOENT;
tasklet_disable(&ctx->tasklet);
driver_data->packet = NULL;
packet->ack = RCODE_CANCELLED;
packet->callback(packet, &ohci->card, packet->ack);
- retval = 0;
-
+ ret = 0;
out:
tasklet_enable(&ctx->tasklet);
- return retval;
+ return ret;
}
-static int
-ohci_enable_phys_dma(struct fw_card *card, int node_id, int generation)
+static int ohci_enable_phys_dma(struct fw_card *card,
+ int node_id, int generation)
{
#ifdef CONFIG_FIREWIRE_OHCI_REMOTE_DMA
return 0;
#else
struct fw_ohci *ohci = fw_ohci(card);
unsigned long flags;
- int n, retval = 0;
+ int n, ret = 0;
/*
* FIXME: Make sure this bitmask is cleared when we clear the busReset
spin_lock_irqsave(&ohci->lock, flags);
if (ohci->generation != generation) {
- retval = -ESTALE;
+ ret = -ESTALE;
goto out;
}
flush_writes(ohci);
out:
spin_unlock_irqrestore(&ohci->lock, flags);
- return retval;
+
+ return ret;
#endif /* CONFIG_FIREWIRE_OHCI_REMOTE_DMA */
}
-static u64
-ohci_get_bus_time(struct fw_card *card)
+static u64 ohci_get_bus_time(struct fw_card *card)
{
struct fw_ohci *ohci = fw_ohci(card);
u32 cycle_time;
return 1;
}
-static struct fw_iso_context *
-ohci_allocate_iso_context(struct fw_card *card, int type, size_t header_size)
+static struct fw_iso_context *ohci_allocate_iso_context(struct fw_card *card,
+ int type, int channel, size_t header_size)
{
struct fw_ohci *ohci = fw_ohci(card);
struct iso_context *ctx, *list;
descriptor_callback_t callback;
+ u64 *channels, dont_care = ~0ULL;
u32 *mask, regs;
unsigned long flags;
- int index, retval = -ENOMEM;
+ int index, ret = -ENOMEM;
if (type == FW_ISO_CONTEXT_TRANSMIT) {
+ channels = &dont_care;
mask = &ohci->it_context_mask;
list = ohci->it_context_list;
callback = handle_it_packet;
} else {
+ channels = &ohci->ir_context_channels;
mask = &ohci->ir_context_mask;
list = ohci->ir_context_list;
if (ohci->use_dualbuffer)
}
spin_lock_irqsave(&ohci->lock, flags);
- index = ffs(*mask) - 1;
- if (index >= 0)
+ index = *channels & 1ULL << channel ? ffs(*mask) - 1 : -1;
+ if (index >= 0) {
+ *channels &= ~(1ULL << channel);
*mask &= ~(1 << index);
+ }
spin_unlock_irqrestore(&ohci->lock, flags);
if (index < 0)
if (ctx->header == NULL)
goto out;
- retval = context_init(&ctx->context, ohci, regs, callback);
- if (retval < 0)
+ ret = context_init(&ctx->context, ohci, regs, callback);
+ if (ret < 0)
goto out_with_header;
return &ctx->base;
*mask |= 1 << index;
spin_unlock_irqrestore(&ohci->lock, flags);
- return ERR_PTR(retval);
+ return ERR_PTR(ret);
}
static int ohci_start_iso(struct fw_iso_context *base,
} else {
index = ctx - ohci->ir_context_list;
ohci->ir_context_mask |= 1 << index;
+ ohci->ir_context_channels |= 1ULL << base->channel;
}
spin_unlock_irqrestore(&ohci->lock, flags);
}
-static int
-ohci_queue_iso_transmit(struct fw_iso_context *base,
- struct fw_iso_packet *packet,
- struct fw_iso_buffer *buffer,
- unsigned long payload)
+static int ohci_queue_iso_transmit(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 descriptor *d, *last, *pd;
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)
+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;
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,
- unsigned long payload)
+static int ohci_queue_iso_receive_packet_per_buffer(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 descriptor *d = NULL, *pd = NULL;
return 0;
}
-static int
-ohci_queue_iso(struct fw_iso_context *base,
- struct fw_iso_packet *packet,
- struct fw_iso_buffer *buffer,
- unsigned long payload)
+static int ohci_queue_iso(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);
unsigned long flags;
- int retval;
+ int ret;
spin_lock_irqsave(&ctx->context.ohci->lock, flags);
if (base->type == FW_ISO_CONTEXT_TRANSMIT)
- retval = ohci_queue_iso_transmit(base, packet, buffer, payload);
+ ret = ohci_queue_iso_transmit(base, packet, buffer, payload);
else if (ctx->context.ohci->use_dualbuffer)
- retval = ohci_queue_iso_receive_dualbuffer(base, packet,
- buffer, payload);
+ ret = ohci_queue_iso_receive_dualbuffer(base, packet,
+ buffer, payload);
else
- retval = ohci_queue_iso_receive_packet_per_buffer(base, packet,
- buffer,
- payload);
+ ret = ohci_queue_iso_receive_packet_per_buffer(base, packet,
+ buffer, payload);
spin_unlock_irqrestore(&ctx->context.ohci->lock, flags);
- return retval;
+ return ret;
}
static const struct fw_card_driver ohci_driver = {
#define ohci_pmac_off(dev)
#endif /* CONFIG_PPC_PMAC */
-static int __devinit
-pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
+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;
ohci->it_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);
reg_write(ohci, OHCI1394_IsoXmitIntMaskClear, ~0);
size = sizeof(struct iso_context) * hweight32(ohci->ir_context_mask);
reg_read(ohci, OHCI1394_GUIDLo);
err = fw_card_add(&ohci->card, max_receive, link_speed, guid);
- if (err < 0)
+ 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);
+
return 0;
fail_self_id:
projects / ~andy / linux / blobdiff