Re: [SeaBIOS] [PATCH 06/10] xhci: Allocate and free the xhci inctx structure on each use.
On Fri, Dec 27, 2013 at 10:16:23PM -0500, Kevin O'Connor wrote:
The inctx struct isn't long lived, so it doesn't need to be allocated in permanent memory.
This patch was incorrect as it lost the assignment to in->slot.ctx[0] . I've rebased and pushed the new series to: https://github.com/KevinOConnor/seabios/tree/xhci-testing -Kevin From: Kevin O'Connor <kevin@koconnor.net> Date: Fri, 27 Dec 2013 18:09:16 -0500 Subject: [PATCH 06/12] xhci: Allocate and free the xhci inctx structure on each use. To: seabios@seabios.org The inctx struct isn't long lived, so it doesn't need to be allocated in permanent memory. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> --- src/hw/usb-xhci.c | 104 ++++++++++++++++++++++++++++++++---------------------- 1 file changed, 61 insertions(+), 43 deletions(-) diff --git a/src/hw/usb-xhci.c b/src/hw/usb-xhci.c index ac13c4c..d55a2cf 100644 --- a/src/hw/usb-xhci.c +++ b/src/hw/usb-xhci.c @@ -249,7 +249,6 @@ struct usb_xhci_s { struct xhci_device { struct xhci_devctx devctx; - struct xhci_inctx inctx; struct usbdevice_s *usbdev; struct usb_xhci_s *xhci; @@ -545,11 +544,12 @@ static int xhci_cmd_disable_slot(struct xhci_device *dev) return xhci_cmd_submit(dev->xhci, &cmd); } -static int xhci_cmd_address_device(struct xhci_device *dev) +static int xhci_cmd_address_device(struct xhci_device *dev + , struct xhci_inctx *inctx) { ASSERT32FLAT(); struct xhci_trb cmd = { - .ptr_low = (u32)&dev->inctx, + .ptr_low = (u32)inctx, .ptr_high = 0, .status = 0, .control = (dev->slotid << 24) | (CR_ADDRESS_DEVICE << 10) @@ -558,31 +558,33 @@ static int xhci_cmd_address_device(struct xhci_device *dev) return xhci_cmd_submit(dev->xhci, &cmd); } -static int xhci_cmd_configure_endpoint(struct xhci_device *dev) +static int xhci_cmd_configure_endpoint(struct xhci_device *dev + , struct xhci_inctx *inctx) { ASSERT32FLAT(); struct xhci_trb cmd = { - .ptr_low = (u32)&dev->inctx, + .ptr_low = (u32)inctx, .ptr_high = 0, .status = 0, .control = (dev->slotid << 24) | (CR_CONFIGURE_ENDPOINT << 10) }; dprintf(3, "%s: slotid %d, add 0x%x, del 0x%x\n", __func__, - dev->slotid, dev->inctx.add, dev->inctx.del); + dev->slotid, inctx->add, inctx->del); return xhci_cmd_submit(dev->xhci, &cmd); } -static int xhci_cmd_evaluate_context(struct xhci_device *dev) +static int xhci_cmd_evaluate_context(struct xhci_device *dev + , struct xhci_inctx *inctx) { ASSERT32FLAT(); struct xhci_trb cmd = { - .ptr_low = (u32)&dev->inctx, + .ptr_low = (u32)inctx, .ptr_high = 0, .status = 0, .control = (dev->slotid << 24) | (CR_EVALUATE_CONTEXT << 10) }; dprintf(3, "%s: slotid %d, add 0x%x, del 0x%x\n", __func__, - dev->slotid, dev->inctx.add, dev->inctx.del); + dev->slotid, inctx->add, inctx->del); return xhci_cmd_submit(dev->xhci, &cmd); } @@ -845,6 +847,35 @@ static struct usbhub_op_s xhci_hub_ops = { // -------------------------------------------------------------- // external interface + +static struct xhci_inctx * +xhci_alloc_inctx(struct xhci_pipe *pipe) +{ + struct xhci_inctx *in = memalign_tmphigh(4096, sizeof(*in)); + if (!in) { + warn_noalloc(); + return NULL; + } + memset(in, 0, sizeof(*in)); + + struct usbdevice_s *usbdev = pipe->dev->usbdev; + u32 route = 0; + while (usbdev->hub->usbdev) { + route <<= 4; + route |= (usbdev->port+1) & 0xf; + usbdev = usbdev->hub->usbdev; + } + + in->add = 0x01; + in->slot.ctx[0] |= (1 << 27); // context entries + in->slot.ctx[0] |= speed_to_xhci[pipe->dev->usbdev->speed] << 20; + in->slot.ctx[0] |= route; + in->slot.ctx[1] |= (usbdev->port+1) << 16; + /* TODO ctx0: hub bit */ + /* TODO ctx1: hub ports */ + return in; +} + struct usb_pipe * xhci_alloc_pipe(struct usbdevice_s *usbdev , struct usb_endpoint_descriptor *epdesc) @@ -877,10 +908,8 @@ xhci_alloc_pipe(struct usbdevice_s *usbdev usb_desc2pipe(&pipe->pipe, usbdev, epdesc); pipe->dev = xhci_find_alloc_device(xhci, usbdev); - if (!pipe->dev) { - free(pipe); - return NULL; - } + if (!pipe->dev) + goto fail; pipe->epid = epid; pipe->reqs.cs = 1; if (eptype == USB_ENDPOINT_XFER_INT) @@ -889,10 +918,10 @@ xhci_alloc_pipe(struct usbdevice_s *usbdev dprintf(3, "%s: usbdev %p, ring %p, slotid %d, epid %d\n", __func__, usbdev, &pipe->reqs, pipe->dev->slotid, pipe->epid); if (pipe->epid > 1 && pipe->dev->slotid) { - struct xhci_inctx *in = &pipe->dev->inctx; - in->add = (1 << pipe->epid) | 1; - in->del = 0; - + struct xhci_inctx *in = xhci_alloc_inctx(pipe); + if (!in) + goto fail; + in->add |= (1 << pipe->epid); in->slot.ctx[0] |= (31 << 27); // context entries int e = pipe->epid-1; @@ -907,15 +936,18 @@ xhci_alloc_pipe(struct usbdevice_s *usbdev in->ep[e].deq_high = 0; in->ep[e].length = pipe->pipe.maxpacket; - int cc = xhci_cmd_configure_endpoint(pipe->dev); + int cc = xhci_cmd_configure_endpoint(pipe->dev, in); + free(in); if (cc != CC_SUCCESS) { dprintf(1, "%s: configure endpoint: failed (cc %d)\n", __func__, cc); - free(pipe); - return NULL; + goto fail; } } return &pipe->pipe; +fail: + free(pipe); + return NULL; } struct usb_pipe * @@ -934,16 +966,17 @@ xhci_update_pipe(struct usbdevice_s *usbdev, struct usb_pipe *upipe dprintf(1, "%s: reconf ctl endpoint pkt size: %d -> %d\n", __func__, pipe->pipe.maxpacket, epdesc->wMaxPacketSize); pipe->pipe.maxpacket = epdesc->wMaxPacketSize; - struct xhci_inctx *in = &pipe->dev->inctx; + struct xhci_inctx *in = xhci_alloc_inctx(pipe); + if (!in) + return upipe; in->add = (1 << 1); - in->del = 0; - in->ep[0].ctx[1] &= 0xffff; in->ep[0].ctx[1] |= (pipe->pipe.maxpacket << 16); - int cc = xhci_cmd_evaluate_context(pipe->dev); + int cc = xhci_cmd_evaluate_context(pipe->dev, in); if (cc != CC_SUCCESS) { dprintf(1, "%s: reconf ctl endpoint: failed (cc %d)\n", __func__, cc); } + free(in); } return upipe; } @@ -971,24 +1004,8 @@ xhci_control(struct usb_pipe *p, int dir, const void *cmd, int cmdsize xhci->devs[slotid].ptr_low = (u32)&pipe->dev->devctx; xhci->devs[slotid].ptr_high = 0; - struct usbdevice_s *usbdev = pipe->dev->usbdev; - u32 route = 0; - while (usbdev->hub->usbdev) { - route <<= 4; - route |= (usbdev->port+1) & 0xf; - usbdev = usbdev->hub->usbdev; - } - dprintf(3, "%s: root port %d, route 0x%x\n", - __func__, usbdev->port+1, route); - - struct xhci_inctx *in = &pipe->dev->inctx; - in->add = 0x03; - in->slot.ctx[0] |= (1 << 27); // context entries - in->slot.ctx[0] |= speed_to_xhci[pipe->dev->usbdev->speed] << 20; - in->slot.ctx[0] |= route; - in->slot.ctx[1] |= (usbdev->port+1) << 16; - /* TODO ctx0: hub bit */ - /* TODO ctx1: hub ports */ + struct xhci_inctx *in = xhci_alloc_inctx(pipe); + in->add |= (1 << 1); in->ep[0].ctx[0] |= (3 << 16); // interval: 1ms in->ep[0].ctx[1] |= (4 << 3); // control pipe @@ -999,7 +1016,8 @@ xhci_control(struct usb_pipe *p, int dir, const void *cmd, int cmdsize in->ep[0].deq_high = 0; in->ep[0].length = 8; - cc = xhci_cmd_address_device(pipe->dev); + cc = xhci_cmd_address_device(pipe->dev, in); + free(in); if (cc != CC_SUCCESS) { dprintf(1, "%s: address device: failed (cc %d)\n", __func__, cc); return -1; -- 1.8.3.1
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Kevin O'Connor