diff options
| author | Kristian Høgsberg <krh@redhat.com> | 2007-02-16 17:34:49 -0500 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-03-09 22:03:03 +0100 |
| commit | e364cf4e0aa245ba2ce5942289e8a43935505e53 (patch) | |
| tree | d12544f02a83a33f13babf430d225adbd7ba1252 /drivers/firewire/fw-ohci.c | |
| parent | 68be3fa15a420d96b1aaed4c519607bf2bfcb2e1 (diff) | |
firewire: Store OHCI version and make sure we have at least 1.1 before doing dualbuffer.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/fw-ohci.c')
| -rw-r--r-- | drivers/firewire/fw-ohci.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index 18769d906ca..12f109da4d8 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -152,6 +152,7 @@ struct iso_context { struct fw_ohci { struct fw_card card; + u32 version; __iomem char *registers; dma_addr_t self_id_bus; __le32 *self_id_cpu; @@ -210,6 +211,7 @@ static inline struct fw_ohci *fw_ohci(struct fw_card *card) #define OHCI1394_PCI_HCI_Control 0x40 #define SELF_ID_BUF_SIZE 0x800 #define OHCI_TCODE_PHY_PACKET 0x0e +#define OHCI_VERSION_1_1 0x010010 static char ohci_driver_name[] = KBUILD_MODNAME; @@ -1357,6 +1359,10 @@ ohci_allocate_iso_context(struct fw_card *card, int type, size_t header_size) callback = handle_ir_bufferfill_packet; } + if (callback == handle_ir_dualbuffer_packet && + ohci->version < OHCI_VERSION_1_1) + return ERR_PTR(-EINVAL); + spin_lock_irqsave(&ohci->lock, flags); index = ffs(*mask) - 1; if (index >= 0) @@ -1687,14 +1693,19 @@ ohci_queue_iso(struct fw_iso_context *base, struct fw_iso_buffer *buffer, unsigned long payload) { + struct iso_context *ctx = container_of(base, struct iso_context, base); + if (base->type == FW_ISO_CONTEXT_TRANSMIT) return ohci_queue_iso_transmit(base, packet, buffer, payload); else if (base->header_size == 0) return ohci_queue_iso_receive_bufferfill(base, packet, buffer, payload); - else + else if (ctx->context.ohci->version >= OHCI_VERSION_1_1) return ohci_queue_iso_receive_dualbuffer(base, packet, buffer, payload); + else + /* FIXME: Implement fallback for OHCI 1.0 controllers. */ + return -EINVAL; } static const struct fw_card_driver ohci_driver = { @@ -1767,7 +1778,7 @@ 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; + u32 bus_options, max_receive, link_speed; u64 guid; int error_code; size_t size; @@ -1894,9 +1905,9 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent) if (error_code < 0) return cleanup(ohci, CLEANUP_SELF_ID, error_code); - version = reg_read(ohci, OHCI1394_Version); + ohci->version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff; fw_notify("Added fw-ohci device %s, OHCI version %x.%x\n", - dev->dev.bus_id, (version >> 16) & 0xff, version & 0xff); + dev->dev.bus_id, ohci->version >> 16, ohci->version & 0xff); return 0; } |