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author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2009-04-29 19:05:20 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-06-15 21:44:50 -0700 |
commit | 23e3be113f42790736319c049c78e5f9a4394c02 (patch) | |
tree | bdbc5fe6350d60202ed04e70a756cade8c92c596 /drivers/usb/host/xhci-ring.c | |
parent | 06e7a1487b61e1ae909c4a4c264b4428c55beb7e (diff) | |
download | kernel_samsung_smdk4412-23e3be113f42790736319c049c78e5f9a4394c02.zip kernel_samsung_smdk4412-23e3be113f42790736319c049c78e5f9a4394c02.tar.gz kernel_samsung_smdk4412-23e3be113f42790736319c049c78e5f9a4394c02.tar.bz2 |
USB: xhci: Avoid global namespace pollution.
Make all globally visible functions start with xhci_ and mark functions as
static if they're only called within the same C file. Fix some long lines
while we're at it.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
-rw-r--r-- | drivers/usb/host/xhci-ring.c | 72 |
1 files changed, 37 insertions, 35 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 8fb5d52..f692e74 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -71,7 +71,7 @@ * Returns zero if the TRB isn't in this segment, otherwise it returns the DMA * address of the TRB. */ -dma_addr_t trb_virt_to_dma(struct xhci_segment *seg, +dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb) { dma_addr_t offset; @@ -235,12 +235,12 @@ static int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring, return 1; } -void set_hc_event_deq(struct xhci_hcd *xhci) +void xhci_set_hc_event_deq(struct xhci_hcd *xhci) { u32 temp; dma_addr_t deq; - deq = trb_virt_to_dma(xhci->event_ring->deq_seg, + deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, xhci->event_ring->dequeue); if (deq == 0 && !in_interrupt()) xhci_warn(xhci, "WARN something wrong with SW event ring " @@ -256,7 +256,7 @@ void set_hc_event_deq(struct xhci_hcd *xhci) } /* Ring the host controller doorbell after placing a command on the ring */ -void ring_cmd_db(struct xhci_hcd *xhci) +void xhci_ring_cmd_db(struct xhci_hcd *xhci) { u32 temp; @@ -371,7 +371,7 @@ static void find_new_dequeue_state(struct xhci_hcd *xhci, ep_ring->deq_seg = state->new_deq_seg; } -void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, +static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, struct xhci_td *cur_td) { struct xhci_segment *cur_seg; @@ -390,7 +390,7 @@ void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, xhci_dbg(xhci, "Address = %p (0x%llx dma); " "in seg %p (0x%llx dma)\n", cur_trb, - (unsigned long long)trb_virt_to_dma(cur_seg, cur_trb), + (unsigned long long)xhci_trb_virt_to_dma(cur_seg, cur_trb), cur_seg, (unsigned long long)cur_seg->dma); } else { @@ -403,7 +403,7 @@ void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, xhci_dbg(xhci, "Cancel TRB %p (0x%llx dma) " "in seg %p (0x%llx dma)\n", cur_trb, - (unsigned long long)trb_virt_to_dma(cur_seg, cur_trb), + (unsigned long long)xhci_trb_virt_to_dma(cur_seg, cur_trb), cur_seg, (unsigned long long)cur_seg->dma); } @@ -458,7 +458,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, cur_td = list_entry(entry, struct xhci_td, cancelled_td_list); xhci_dbg(xhci, "Cancelling TD starting at %p, 0x%llx (dma).\n", cur_td->first_trb, - (unsigned long long)trb_virt_to_dma(cur_td->start_seg, cur_td->first_trb)); + (unsigned long long)xhci_trb_virt_to_dma(cur_td->start_seg, cur_td->first_trb)); /* * If we stopped on the TD we need to cancel, then we have to * move the xHC endpoint ring dequeue pointer past this TD. @@ -485,7 +485,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, deq_state.new_deq_seg, (unsigned long long)deq_state.new_deq_seg->dma, deq_state.new_deq_ptr, - (unsigned long long)trb_virt_to_dma(deq_state.new_deq_seg, deq_state.new_deq_ptr), + (unsigned long long)xhci_trb_virt_to_dma(deq_state.new_deq_seg, deq_state.new_deq_ptr), deq_state.new_cycle_state); queue_set_tr_deq(xhci, slot_id, ep_index, deq_state.new_deq_seg, @@ -497,7 +497,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, * ring running. */ ep_ring->state |= SET_DEQ_PENDING; - ring_cmd_db(xhci); + xhci_ring_cmd_db(xhci); } else { /* Otherwise just ring the doorbell to restart the ring */ ring_ep_doorbell(xhci, slot_id, ep_index); @@ -612,7 +612,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, dma_addr_t cmd_dequeue_dma; cmd_dma = (((u64) event->cmd_trb[1]) << 32) + event->cmd_trb[0]; - cmd_dequeue_dma = trb_virt_to_dma(xhci->cmd_ring->deq_seg, + cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg, xhci->cmd_ring->dequeue); /* Is the command ring deq ptr out of sync with the deq seg ptr? */ if (cmd_dequeue_dma == 0) { @@ -677,7 +677,7 @@ static void handle_port_status(struct xhci_hcd *xhci, /* Update event ring dequeue pointer before dropping the lock */ inc_deq(xhci, xhci->event_ring, true); - set_hc_event_deq(xhci); + xhci_set_hc_event_deq(xhci); spin_unlock(&xhci->lock); /* Pass this up to the core */ @@ -702,15 +702,15 @@ static struct xhci_segment *trb_in_td( dma_addr_t end_trb_dma; struct xhci_segment *cur_seg; - start_dma = trb_virt_to_dma(start_seg, start_trb); + start_dma = xhci_trb_virt_to_dma(start_seg, start_trb); cur_seg = start_seg; do { /* We may get an event for a Link TRB in the middle of a TD */ - end_seg_dma = trb_virt_to_dma(cur_seg, + end_seg_dma = xhci_trb_virt_to_dma(cur_seg, &start_seg->trbs[TRBS_PER_SEGMENT - 1]); /* If the end TRB isn't in this segment, this is set to 0 */ - end_trb_dma = trb_virt_to_dma(cur_seg, end_trb); + end_trb_dma = xhci_trb_virt_to_dma(cur_seg, end_trb); if (end_trb_dma > 0) { /* The end TRB is in this segment, so suspect should be here */ @@ -734,7 +734,7 @@ static struct xhci_segment *trb_in_td( return cur_seg; } cur_seg = cur_seg->next; - start_dma = trb_virt_to_dma(cur_seg, &cur_seg->trbs[0]); + start_dma = xhci_trb_virt_to_dma(cur_seg, &cur_seg->trbs[0]); } while (1); } @@ -992,7 +992,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, } cleanup: inc_deq(xhci, xhci->event_ring, true); - set_hc_event_deq(xhci); + xhci_set_hc_event_deq(xhci); /* FIXME for multi-TD URBs (who have buffers bigger than 64MB) */ if (urb) { @@ -1050,7 +1050,7 @@ void xhci_handle_event(struct xhci_hcd *xhci) if (update_ptrs) { /* Update SW and HC event ring dequeue pointer */ inc_deq(xhci, xhci->event_ring, true); - set_hc_event_deq(xhci); + xhci_set_hc_event_deq(xhci); } /* Are there more items on the event ring? */ xhci_handle_event(xhci); @@ -1119,7 +1119,7 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, return 0; } -int xhci_prepare_transfer(struct xhci_hcd *xhci, +static int prepare_transfer(struct xhci_hcd *xhci, struct xhci_virt_device *xdev, unsigned int ep_index, unsigned int num_trbs, @@ -1156,7 +1156,7 @@ int xhci_prepare_transfer(struct xhci_hcd *xhci, return 0; } -unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb) +static unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb) { int num_sgs, num_trbs, running_total, temp, i; struct scatterlist *sg; @@ -1200,7 +1200,7 @@ unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb) return num_trbs; } -void check_trb_math(struct urb *urb, int num_trbs, int running_total) +static void check_trb_math(struct urb *urb, int num_trbs, int running_total) { if (num_trbs != 0) dev_dbg(&urb->dev->dev, "%s - ep %#x - Miscalculated number of " @@ -1216,7 +1216,7 @@ void check_trb_math(struct urb *urb, int num_trbs, int running_total) urb->transfer_buffer_length); } -void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, +static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, unsigned int ep_index, int start_cycle, struct xhci_generic_trb *start_trb, struct xhci_td *td) { @@ -1229,7 +1229,7 @@ void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, ring_ep_doorbell(xhci, slot_id, ep_index); } -int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, +static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, int slot_id, unsigned int ep_index) { struct xhci_ring *ep_ring; @@ -1248,7 +1248,7 @@ int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, num_trbs = count_sg_trbs_needed(xhci, urb); num_sgs = urb->num_sgs; - trb_buff_len = xhci_prepare_transfer(xhci, xhci->devs[slot_id], + trb_buff_len = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, num_trbs, urb, &td, mem_flags); if (trb_buff_len < 0) return trb_buff_len; @@ -1356,7 +1356,7 @@ int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, } /* This is very similar to what ehci-q.c qtd_fill() does */ -int queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, +int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, int slot_id, unsigned int ep_index) { struct xhci_ring *ep_ring; @@ -1400,7 +1400,7 @@ int queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, (unsigned long long)urb->transfer_dma, num_trbs); - ret = xhci_prepare_transfer(xhci, xhci->devs[slot_id], ep_index, + ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, num_trbs, urb, &td, mem_flags); if (ret < 0) return ret; @@ -1469,7 +1469,7 @@ int queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, } /* Caller must have locked xhci->lock */ -int queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, +int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, int slot_id, unsigned int ep_index) { struct xhci_ring *ep_ring; @@ -1502,7 +1502,7 @@ int queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, */ if (urb->transfer_buffer_length > 0) num_trbs++; - ret = xhci_prepare_transfer(xhci, xhci->devs[slot_id], ep_index, num_trbs, + ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, num_trbs, urb, &td, mem_flags); if (ret < 0) return ret; @@ -1584,36 +1584,38 @@ static int queue_cmd_noop(struct xhci_hcd *xhci) * Place a no-op command on the command ring to test the command and * event ring. */ -void *setup_one_noop(struct xhci_hcd *xhci) +void *xhci_setup_one_noop(struct xhci_hcd *xhci) { if (queue_cmd_noop(xhci) < 0) return NULL; xhci->noops_submitted++; - return ring_cmd_db; + return xhci_ring_cmd_db; } /* Queue a slot enable or disable request on the command ring */ -int queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id) +int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id) { return queue_command(xhci, 0, 0, 0, TRB_TYPE(trb_type) | SLOT_ID_FOR_TRB(slot_id)); } /* Queue an address device command TRB */ -int queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, u32 slot_id) +int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, + u32 slot_id) { return queue_command(xhci, in_ctx_ptr, 0, 0, TRB_TYPE(TRB_ADDR_DEV) | SLOT_ID_FOR_TRB(slot_id)); } /* Queue a configure endpoint command TRB */ -int queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, u32 slot_id) +int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, + u32 slot_id) { return queue_command(xhci, in_ctx_ptr, 0, 0, TRB_TYPE(TRB_CONFIG_EP) | SLOT_ID_FOR_TRB(slot_id)); } -int queue_stop_endpoint(struct xhci_hcd *xhci, int slot_id, +int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, int slot_id, unsigned int ep_index) { u32 trb_slot_id = SLOT_ID_FOR_TRB(slot_id); @@ -1636,7 +1638,7 @@ static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id, u32 trb_ep_index = EP_ID_FOR_TRB(ep_index); u32 type = TRB_TYPE(TRB_SET_DEQ); - addr = trb_virt_to_dma(deq_seg, deq_ptr); + addr = xhci_trb_virt_to_dma(deq_seg, deq_ptr); if (addr == 0) xhci_warn(xhci, "WARN Cannot submit Set TR Deq Ptr\n"); xhci_warn(xhci, "WARN deq seg = %p, deq pt = %p\n", |