diff options
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/ohci.c | 54 |
1 files changed, 46 insertions, 8 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 3a908038ff6..5e5d5d3d43d 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -18,6 +18,7 @@ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <linux/bitops.h> #include <linux/bug.h> #include <linux/compiler.h> #include <linux/delay.h> @@ -153,6 +154,7 @@ struct context { descriptor_callback_t callback; struct tasklet_struct tasklet; + bool active; }; #define IT_HEADER_SY(v) ((v) << 0) @@ -168,6 +170,9 @@ struct iso_context { int excess_bytes; void *header; size_t header_length; + + u8 sync; + u8 tags; }; #define CONFIG_ROM_SIZE 1024 @@ -184,7 +189,8 @@ struct fw_ohci { u32 bus_time; bool is_root; bool csr_state_setclear_abdicate; - + int n_ir; + int n_it; /* * Spinlock for accessing fw_ohci data. Never call out of * this driver with this lock held. @@ -1161,6 +1167,7 @@ static struct descriptor *context_get_descriptors(struct context *ctx, static void context_run(struct context *ctx, u32 extra) { struct fw_ohci *ohci = ctx->ohci; + ctx->active = true; reg_write(ohci, COMMAND_PTR(ctx->regs), le32_to_cpu(ctx->last->branch_address)); @@ -1192,6 +1199,7 @@ static void context_stop(struct context *ctx) u32 reg; int i; + ctx->active = false; reg_write(ctx->ohci, CONTROL_CLEAR(ctx->regs), CONTEXT_RUN); flush_writes(ctx->ohci); @@ -2641,6 +2649,10 @@ static int ohci_start_iso(struct fw_iso_context *base, reg_write(ohci, OHCI1394_IsoRecvIntMaskSet, 1 << index); reg_write(ohci, CONTEXT_MATCH(ctx->context.regs), match); context_run(&ctx->context, control); + + ctx->sync = sync; + ctx->tags = tags; + break; } @@ -2738,6 +2750,26 @@ static int ohci_set_iso_channels(struct fw_iso_context *base, u64 *channels) return ret; } +#ifdef CONFIG_PM +static void ohci_resume_iso_dma(struct fw_ohci *ohci) +{ + int i; + struct iso_context *ctx; + + for (i = 0 ; i < ohci->n_ir ; i++) { + ctx = &ohci->ir_context_list[i]; + if (ctx->context.active) + ohci_start_iso(&ctx->base, 0, ctx->sync, ctx->tags); + } + + for (i = 0 ; i < ohci->n_it ; i++) { + ctx = &ohci->it_context_list[i]; + if (ctx->context.active) + ohci_start_iso(&ctx->base, 0, ctx->sync, ctx->tags); + } +} +#endif + static int queue_iso_transmit(struct iso_context *ctx, struct fw_iso_packet *packet, struct fw_iso_buffer *buffer, @@ -3047,7 +3079,7 @@ static int __devinit pci_probe(struct pci_dev *dev, struct fw_ohci *ohci; u32 bus_options, max_receive, link_speed, version; u64 guid; - int i, err, n_ir, n_it; + int i, err; size_t size; ohci = kzalloc(sizeof(*ohci), GFP_KERNEL); @@ -3141,15 +3173,15 @@ static int __devinit pci_probe(struct pci_dev *dev, ohci->ir_context_channels = ~0ULL; ohci->ir_context_mask = reg_read(ohci, OHCI1394_IsoRecvIntMaskSet); reg_write(ohci, OHCI1394_IsoRecvIntMaskClear, ~0); - n_ir = hweight32(ohci->ir_context_mask); - size = sizeof(struct iso_context) * n_ir; + ohci->n_ir = hweight32(ohci->ir_context_mask); + size = sizeof(struct iso_context) * ohci->n_ir; ohci->ir_context_list = kzalloc(size, GFP_KERNEL); reg_write(ohci, OHCI1394_IsoXmitIntMaskSet, ~0); ohci->it_context_mask = reg_read(ohci, OHCI1394_IsoXmitIntMaskSet); reg_write(ohci, OHCI1394_IsoXmitIntMaskClear, ~0); - n_it = hweight32(ohci->it_context_mask); - size = sizeof(struct iso_context) * n_it; + ohci->n_it = hweight32(ohci->it_context_mask); + size = sizeof(struct iso_context) * ohci->n_it; ohci->it_context_list = kzalloc(size, GFP_KERNEL); if (ohci->it_context_list == NULL || ohci->ir_context_list == NULL) { @@ -3174,7 +3206,7 @@ static int __devinit pci_probe(struct pci_dev *dev, 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); + ohci->n_ir, ohci->n_it, ohci->quirks); return 0; @@ -3291,7 +3323,13 @@ static int pci_resume(struct pci_dev *dev) reg_write(ohci, OHCI1394_GUIDHi, (u32)(ohci->card.guid >> 32)); } - return ohci_enable(&ohci->card, NULL, 0); + err = ohci_enable(&ohci->card, NULL, 0); + + if (err) + return err; + + ohci_resume_iso_dma(ohci); + return 0; } #endif |