diff options
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 3ec2ac9636fe..a6ff8252699e 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -79,7 +79,7 @@ static void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg) * related flags, such as End TRB, Toggle Cycle, and no snoop. */ static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev, - struct xhci_segment *next, bool link_trbs) + struct xhci_segment *next, bool link_trbs, bool isoc) { u32 val; @@ -95,7 +95,9 @@ static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev, val &= ~TRB_TYPE_BITMASK; val |= TRB_TYPE(TRB_LINK); /* Always set the chain bit with 0.95 hardware */ - if (xhci_link_trb_quirk(xhci)) + /* Set chain bit for isoc rings on AMD 0.96 host */ + if (xhci_link_trb_quirk(xhci) || + (isoc && (xhci->quirks & XHCI_AMD_0x96_HOST))) val |= TRB_CHAIN; prev->trbs[TRBS_PER_SEGMENT-1].link.control = cpu_to_le32(val); } @@ -152,7 +154,7 @@ static void xhci_initialize_ring_info(struct xhci_ring *ring) * See section 4.9.1 and figures 15 and 16. */ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, - unsigned int num_segs, bool link_trbs, gfp_t flags) + unsigned int num_segs, bool link_trbs, bool isoc, gfp_t flags) { struct xhci_ring *ring; struct xhci_segment *prev; @@ -178,12 +180,12 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, next = xhci_segment_alloc(xhci, flags); if (!next) goto fail; - xhci_link_segments(xhci, prev, next, link_trbs); + xhci_link_segments(xhci, prev, next, link_trbs, isoc); prev = next; num_segs--; } - xhci_link_segments(xhci, prev, ring->first_seg, link_trbs); + xhci_link_segments(xhci, prev, ring->first_seg, link_trbs, isoc); if (link_trbs) { /* See section 4.9.2.1 and 6.4.4.1 */ @@ -229,14 +231,14 @@ void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci, * pointers to the beginning of the ring. */ static void xhci_reinit_cached_ring(struct xhci_hcd *xhci, - struct xhci_ring *ring) + struct xhci_ring *ring, bool isoc) { struct xhci_segment *seg = ring->first_seg; do { memset(seg->trbs, 0, sizeof(union xhci_trb)*TRBS_PER_SEGMENT); /* All endpoint rings have link TRBs */ - xhci_link_segments(xhci, seg, seg->next, 1); + xhci_link_segments(xhci, seg, seg->next, 1, isoc); seg = seg->next; } while (seg != ring->first_seg); xhci_initialize_ring_info(ring); @@ -540,7 +542,7 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, */ for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { stream_info->stream_rings[cur_stream] = - xhci_ring_alloc(xhci, 1, true, mem_flags); + xhci_ring_alloc(xhci, 1, true, false, mem_flags); cur_ring = stream_info->stream_rings[cur_stream]; if (!cur_ring) goto cleanup_rings; @@ -874,7 +876,7 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, } /* Allocate endpoint 0 ring */ - dev->eps[0].ring = xhci_ring_alloc(xhci, 1, true, flags); + dev->eps[0].ring = xhci_ring_alloc(xhci, 1, true, false, flags); if (!dev->eps[0].ring) goto fail; @@ -1315,10 +1317,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, */ if (usb_endpoint_xfer_isoc(&ep->desc)) virt_dev->eps[ep_index].new_ring = - xhci_ring_alloc(xhci, 8, true, mem_flags); + xhci_ring_alloc(xhci, 8, true, true, mem_flags); else virt_dev->eps[ep_index].new_ring = - xhci_ring_alloc(xhci, 1, true, mem_flags); + xhci_ring_alloc(xhci, 1, true, false, mem_flags); if (!virt_dev->eps[ep_index].new_ring) { /* Attempt to use the ring cache */ if (virt_dev->num_rings_cached == 0) @@ -1327,7 +1329,8 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, virt_dev->ring_cache[virt_dev->num_rings_cached]; virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL; virt_dev->num_rings_cached--; - xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring); + xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring, + usb_endpoint_xfer_isoc(&ep->desc) ? true : false); } virt_dev->eps[ep_index].skip = false; ep_ring = virt_dev->eps[ep_index].new_ring; @@ -2236,7 +2239,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) goto fail; /* Set up the command ring to have one segments for now. */ - xhci->cmd_ring = xhci_ring_alloc(xhci, 1, true, flags); + xhci->cmd_ring = xhci_ring_alloc(xhci, 1, true, false, flags); if (!xhci->cmd_ring) goto fail; xhci_dbg(xhci, "Allocated command ring at %p\n", xhci->cmd_ring); @@ -2267,7 +2270,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) * the event ring segment table (ERST). Section 4.9.3. */ xhci_dbg(xhci, "// Allocating event ring\n"); - xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, false, flags); + xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, false, false, + flags); if (!xhci->event_ring) goto fail; if (xhci_check_trb_in_td_math(xhci, flags) < 0) |