204 lines
7.5 KiB
Diff
204 lines
7.5 KiB
Diff
From 16e60d9443ebe87df0cecac9a22df6e0440b805d Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Ale=C5=A1=20Nesrsta?= <starous@volny.cz>
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Date: Fri, 12 Apr 2013 20:42:46 +0200
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Subject: [PATCH 292/482] Fix handling of split transfers.
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---
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ChangeLog | 4 ++++
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grub-core/bus/usb/ehci.c | 25 ++++++++++-------------
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grub-core/bus/usb/usbhub.c | 50 +++++++++++++++++++++++++++++++++++++++-------
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include/grub/usb.h | 4 ++--
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4 files changed, 59 insertions(+), 24 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index 79563b8..e8e4569 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,3 +1,7 @@
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+2013-04-12 Aleš Nesrsta <starous@volny.cz>
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+
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+ Fix handling of split transfers.
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+
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2013-04-12 Vladimir Serbinenko <phcoder@gmail.com>
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* grub-core/net/http.c: Fix bad free.
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diff --git a/grub-core/bus/usb/ehci.c b/grub-core/bus/usb/ehci.c
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index e902fcd..18b12b2 100644
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--- a/grub-core/bus/usb/ehci.c
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+++ b/grub-core/bus/usb/ehci.c
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@@ -798,7 +798,7 @@ grub_ehci_pci_iter (grub_pci_device_t dev, grub_pci_id_t pciid,
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/* Set ownership of root hub ports to EHCI */
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grub_ehci_oper_write32 (e, GRUB_EHCI_CONFIG_FLAG, GRUB_EHCI_CF_EHCI_OWNER);
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- /* Enable asynchronous list */
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+ /* Enable both lists */
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grub_ehci_oper_write32 (e, GRUB_EHCI_COMMAND,
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GRUB_EHCI_CMD_AS_ENABL
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| GRUB_EHCI_CMD_PS_ENABL
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@@ -942,9 +942,9 @@ grub_ehci_setup_qh (grub_ehci_qh_t qh, grub_usb_transfer_t transfer)
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* SplitCompletionMask - AFAIK it is ignored in asynchronous list,
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* InterruptScheduleMask - AFAIK it should be zero in async. list */
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ep_cap |= GRUB_EHCI_MULT_THREE;
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- ep_cap |= (transfer->dev->port << GRUB_EHCI_DEVPORT_OFF)
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+ ep_cap |= (transfer->dev->split_hubport << GRUB_EHCI_DEVPORT_OFF)
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& GRUB_EHCI_DEVPORT_MASK;
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- ep_cap |= (transfer->dev->hubaddr << GRUB_EHCI_HUBADDR_OFF)
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+ ep_cap |= (transfer->dev->split_hubaddr << GRUB_EHCI_HUBADDR_OFF)
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& GRUB_EHCI_HUBADDR_MASK;
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if (transfer->dev->speed == GRUB_USB_SPEED_LOW
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&& transfer->type != GRUB_USB_TRANSACTION_TYPE_CONTROL)
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@@ -1261,16 +1261,6 @@ grub_ehci_setup_transfer (grub_usb_controller_t dev,
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/* XXX: Fix it: Currently we don't do anything to restart EHCI */
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return GRUB_USB_ERR_INTERNAL;
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- /* Check if transfer is not high speed and connected to root hub.
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- * It should not happened but... */
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- if ((transfer->dev->speed != GRUB_USB_SPEED_HIGH)
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- && !transfer->dev->hubaddr)
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- {
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- grub_error (GRUB_USB_ERR_BADDEVICE,
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- "FULL/LOW speed device on EHCI port!?!");
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- return GRUB_USB_ERR_BADDEVICE;
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- }
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-
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/* Allocate memory for controller transfer data. */
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cdata = grub_malloc (sizeof (*cdata));
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if (!cdata)
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@@ -1887,13 +1877,18 @@ grub_ehci_fini_hw (int noreturn __attribute__ ((unused)))
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/* We should disable all EHCI HW to prevent any DMA access etc. */
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for (e = ehci; e; e = e->next)
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{
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+ /* Disable both lists */
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+ grub_ehci_oper_write32 (e, GRUB_EHCI_COMMAND,
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+ ~(GRUB_EHCI_CMD_AS_ENABL | GRUB_EHCI_CMD_PS_ENABL)
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+ & grub_ehci_oper_read32 (e, GRUB_EHCI_COMMAND));
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+
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/* Check if EHCI is halted and halt it if not */
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if (grub_ehci_halt (e) != GRUB_USB_ERR_NONE)
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- grub_error (GRUB_ERR_TIMEOUT, "restore_hw: EHCI halt timeout");
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+ grub_error (GRUB_ERR_TIMEOUT, "fini_hw: EHCI halt timeout");
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/* Reset EHCI */
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if (grub_ehci_reset (e) != GRUB_USB_ERR_NONE)
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- grub_error (GRUB_ERR_TIMEOUT, "restore_hw: EHCI reset timeout");
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+ grub_error (GRUB_ERR_TIMEOUT, "fini_hw: EHCI reset timeout");
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}
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return GRUB_USB_ERR_NONE;
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diff --git a/grub-core/bus/usb/usbhub.c b/grub-core/bus/usb/usbhub.c
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index 6fc9d02..e3b7d40 100644
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--- a/grub-core/bus/usb/usbhub.c
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+++ b/grub-core/bus/usb/usbhub.c
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@@ -49,7 +49,7 @@ static grub_usb_controller_dev_t grub_usb_list;
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static grub_usb_device_t
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grub_usb_hub_add_dev (grub_usb_controller_t controller,
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grub_usb_speed_t speed,
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- int port, int hubaddr)
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+ int split_hubport, int split_hubaddr)
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{
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grub_usb_device_t dev;
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int i;
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@@ -63,8 +63,8 @@ grub_usb_hub_add_dev (grub_usb_controller_t controller,
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dev->controller = *controller;
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dev->speed = speed;
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- dev->port = port;
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- dev->hubaddr = hubaddr;
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+ dev->split_hubport = split_hubport;
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+ dev->split_hubaddr = split_hubaddr;
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err = grub_usb_device_initialize (dev);
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if (err)
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@@ -108,8 +108,8 @@ grub_usb_hub_add_dev (grub_usb_controller_t controller,
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grub_dprintf ("usb", "Added new usb device: %p, addr=%d\n",
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dev, i);
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- grub_dprintf ("usb", "speed=%d, port=%d, hubaddr=%d\n",
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- speed, port, hubaddr);
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+ grub_dprintf ("usb", "speed=%d, split_hubport=%d, split_hubaddr=%d\n",
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+ speed, split_hubport, split_hubaddr);
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/* Wait "recovery interval", spec. says 2ms */
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grub_millisleep (2);
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@@ -219,7 +219,12 @@ attach_root_port (struct grub_usb_hub *hub, int portno,
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grub_boot_time ("Port enabled");
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/* Enable the port and create a device. */
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- dev = grub_usb_hub_add_dev (hub->controller, speed, portno, 0);
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+ /* High speed device needs not transaction translation
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+ and full/low speed device cannot be connected to EHCI root hub
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+ and full/low speed device connected to OHCI/UHCI needs not
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+ transaction translation - e.g. hubport and hubaddr should be
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+ always none (zero) for any device connected to any root hub. */
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+ dev = grub_usb_hub_add_dev (hub->controller, speed, 0, 0);
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hub->controller->dev->pending_reset = 0;
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npending--;
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if (! dev)
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@@ -593,6 +598,8 @@ poll_nonroot_hub (grub_usb_device_t dev)
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{
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grub_usb_speed_t speed;
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grub_usb_device_t next_dev;
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+ int split_hubport = 0;
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+ int split_hubaddr = 0;
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/* Determine the device speed. */
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if (status & GRUB_USB_HUB_STATUS_PORT_LOWSPEED)
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@@ -608,8 +615,37 @@ poll_nonroot_hub (grub_usb_device_t dev)
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/* Wait a recovery time after reset, spec. says 10ms */
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grub_millisleep (10);
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+ /* Find correct values for SPLIT hubport and hubaddr */
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+ if (speed == GRUB_USB_SPEED_HIGH)
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+ {
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+ /* HIGH speed device needs not transaction translation */
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+ split_hubport = 0;
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+ split_hubaddr = 0;
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+ }
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+ else
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+ /* FULL/LOW device needs hub port and hub address
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+ for transaction translation (if connected to EHCI) */
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+ if (dev->speed == GRUB_USB_SPEED_HIGH)
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+ {
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+ /* This port is the first FULL/LOW speed port
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+ in the chain from root hub. Attached device
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+ should use its port number and hub address */
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+ split_hubport = i;
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+ split_hubaddr = dev->addr;
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+ }
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+ else
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+ {
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+ /* This port is NOT the first FULL/LOW speed port
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+ in the chain from root hub. Attached device
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+ should use values inherited from some parent
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+ HIGH speed hub - if any. */
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+ split_hubport = dev->split_hubport;
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+ split_hubaddr = dev->split_hubaddr;
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+ }
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+
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/* Add the device and assign a device address to it. */
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- next_dev = grub_usb_hub_add_dev (&dev->controller, speed, i, dev->addr);
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+ next_dev = grub_usb_hub_add_dev (&dev->controller, speed,
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+ split_hubport, split_hubaddr);
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if (dev->controller.dev->pending_reset)
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{
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dev->controller.dev->pending_reset = 0;
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diff --git a/include/grub/usb.h b/include/grub/usb.h
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index 9e2c221..1cc9942 100644
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--- a/include/grub/usb.h
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+++ b/include/grub/usb.h
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@@ -225,9 +225,9 @@ struct grub_usb_device
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struct grub_usb_desc_endp *hub_endpoint;
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/* EHCI Split Transfer information */
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- int port;
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+ int split_hubport;
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- int hubaddr;
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+ int split_hubaddr;
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};
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--
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1.8.2.1
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