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grub2/0387-grub-core-bus-usb-uhci.c-Fix-DMA-handling-and-enable.patch
Peter Jones f74b50e380 Rebase to upstream, fix a pile of bugs. The usual. 
Signed-off-by: Peter Jones <pjones@redhat.com>
2013-06-12 15:37:08 -04:00

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From f94f8f792c37fe2abd7db8d6eaf70929580bf62f Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Mon, 29 Apr 2013 12:05:19 +0200
Subject: [PATCH 387/482] * grub-core/bus/usb/uhci.c: Fix DMA handling
and enable on all PCI platforms.
---
ChangeLog | 5 ++++
grub-core/Makefile.core.def | 2 +-
grub-core/bus/usb/uhci.c | 70 ++++++++++++++++++++++++++++++++++-----------
3 files changed, 59 insertions(+), 18 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 9dacb19..99a049a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
2013-04-29 Vladimir Serbinenko <phcoder@gmail.com>
+ * grub-core/bus/usb/uhci.c: Fix DMA handling and enable on all PCI
+ platforms.
+
+2013-04-29 Vladimir Serbinenko <phcoder@gmail.com>
+
* grub-core/script/execute.c (grub_script_arglist_to_argv): Fix
handling of variables containing backslash.
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 2e73d89..dcb92ef 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -482,7 +482,7 @@ module = {
module = {
name = uhci;
common = bus/usb/uhci.c;
- enable = x86;
+ enable = pci;
};
module = {
diff --git a/grub-core/bus/usb/uhci.c b/grub-core/bus/usb/uhci.c
index 3639c42..a314637 100644
--- a/grub-core/bus/usb/uhci.c
+++ b/grub-core/bus/usb/uhci.c
@@ -26,6 +26,7 @@
#include <grub/cpu/io.h>
#include <grub/time.h>
#include <grub/cpu/pci.h>
+#include <grub/disk.h>
GRUB_MOD_LICENSE ("GPLv3+");
@@ -44,12 +45,22 @@ typedef enum
GRUB_UHCI_REG_USBLEGSUP = 0xc0
} grub_uhci_reg_t;
+enum
+ {
+ GRUB_UHCI_DETECT_CHANGED = (1 << 1),
+ GRUB_UHCI_DETECT_HAVE_DEVICE = 1,
+ GRUB_UHCI_DETECT_LOW_SPEED = (1 << 8)
+ };
+
/* R/WC legacy support bits */
-#define GRUB_UHCI_LEGSUP_END_A20GATE (1 << 15)
-#define GRUB_UHCI_TRAP_BY_64H_WSTAT (1 << 11)
-#define GRUB_UHCI_TRAP_BY_64H_RSTAT (1 << 10)
-#define GRUB_UHCI_TRAP_BY_60H_WSTAT (1 << 9)
-#define GRUB_UHCI_TRAP_BY_60H_RSTAT (1 << 8)
+enum
+ {
+ GRUB_UHCI_LEGSUP_END_A20GATE = (1 << 15),
+ GRUB_UHCI_TRAP_BY_64H_WSTAT = (1 << 11),
+ GRUB_UHCI_TRAP_BY_64H_RSTAT = (1 << 10),
+ GRUB_UHCI_TRAP_BY_60H_WSTAT = (1 << 9),
+ GRUB_UHCI_TRAP_BY_60H_RSTAT = (1 << 8)
+ };
/* Reset all legacy support - clear all R/WC bits and all R/W bits */
#define GRUB_UHCI_RESET_LEGSUP_SMI ( GRUB_UHCI_LEGSUP_END_A20GATE \
@@ -125,7 +136,7 @@ typedef volatile struct grub_uhci_qh *grub_uhci_qh_t;
struct grub_uhci
{
- int iobase;
+ grub_port_t iobase;
volatile grub_uint32_t *framelist_virt;
grub_uint32_t framelist_phys;
struct grub_pci_dma_chunk *framelist_chunk;
@@ -213,22 +224,36 @@ grub_uhci_pci_iter (grub_pci_device_t dev,
/* Set bus master - needed for coreboot or broken BIOSes */
addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
- grub_pci_write_word(addr,
- GRUB_PCI_COMMAND_BUS_MASTER | grub_pci_read_word(addr));
+ grub_pci_write_word(addr, GRUB_PCI_COMMAND_IO_ENABLED
+ | GRUB_PCI_COMMAND_BUS_MASTER
+ | grub_pci_read_word (addr));
/* Determine IO base address. */
addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG4);
base = grub_pci_read (addr);
/* Stop if there is no IO space base address defined. */
- if (! (base & 1))
+ if ((base & GRUB_PCI_ADDR_SPACE_MASK) != GRUB_PCI_ADDR_SPACE_IO)
return 0;
+ if ((base & GRUB_UHCI_IOMASK) == 0)
+ {
+#if defined (GRUB_MACHINE_MIPS_LOONGSON) || defined (GRUB_MACHINE_QEMU)
+ static int ndevs = 0;
+ base = 0x1800 + ndevs++ * 0x100;
+ grub_pci_write (addr, base | GRUB_PCI_ADDR_SPACE_IO);
+#else
+ return 0;
+#endif
+ }
+
+ grub_dprintf ("uhci", "base = %x\n", base);
+
/* Allocate memory for the controller and register it. */
u = grub_zalloc (sizeof (*u));
if (! u)
return 1;
- u->iobase = base & GRUB_UHCI_IOMASK;
+ u->iobase = (base & GRUB_UHCI_IOMASK) + GRUB_MACHINE_PCI_IO_BASE;
/* Reset PIRQ and SMI */
addr = grub_pci_make_address (dev, GRUB_UHCI_REG_USBLEGSUP);
@@ -392,6 +417,7 @@ grub_free_queue (struct grub_uhci *u, grub_uhci_qh_t qh, grub_uhci_td_t td,
{
grub_uhci_td_t tdprev;
+ grub_dprintf ("uhci", "Freeing %p\n", td);
/* Check state of TD and possibly set last_trans */
if (transfer && (td->linkptr & 1))
transfer->last_trans = i;
@@ -400,7 +426,10 @@ grub_free_queue (struct grub_uhci *u, grub_uhci_qh_t qh, grub_uhci_td_t td,
/* Unlink the queue. */
tdprev = td;
- td = grub_dma_phys2virt (td->linkptr2, u->td_chunk);
+ if (!td->linkptr2)
+ td = 0;
+ else
+ td = grub_dma_phys2virt (td->linkptr2, u->td_chunk);
/* Free the TD. */
grub_free_td (u, tdprev);
@@ -583,10 +612,17 @@ grub_uhci_check_transfer (grub_usb_controller_t dev,
*actual = 0;
- errtd = grub_dma_phys2virt (cdata->qh->elinkptr & ~0x0f, u->qh_chunk);
+ if (cdata->qh->elinkptr & ~0x0f)
+ errtd = grub_dma_phys2virt (cdata->qh->elinkptr & ~0x0f, u->qh_chunk);
+ else
+ errtd = 0;
- grub_dprintf ("uhci", ">t status=0x%02x data=0x%02x td=%p\n",
- errtd->ctrl_status, errtd->buffer & (~15), errtd);
+ if (errtd)
+ {
+ grub_dprintf ("uhci", ">t status=0x%02x data=0x%02x td=%p, %x\n",
+ errtd->ctrl_status, errtd->buffer & (~15), errtd,
+ cdata->qh->elinkptr);
+ }
/* Check if the transaction completed. */
if (cdata->qh->elinkptr & 1)
@@ -788,7 +824,7 @@ grub_uhci_detect_dev (grub_usb_controller_t dev, int port, int *changed)
grub_dprintf ("uhci", "detect=0x%02x port=%d\n", status, port);
/* Connect Status Change bit - it detects change of connection */
- if (status & (1 << 1))
+ if (status & GRUB_UHCI_DETECT_CHANGED)
{
*changed = 1;
/* Reset bit Connect Status Change */
@@ -798,9 +834,9 @@ grub_uhci_detect_dev (grub_usb_controller_t dev, int port, int *changed)
else
*changed = 0;
- if (! (status & 1))
+ if (! (status & GRUB_UHCI_DETECT_HAVE_DEVICE))
return GRUB_USB_SPEED_NONE;
- else if (status & (1 << 8))
+ else if (status & GRUB_UHCI_DETECT_LOW_SPEED)
return GRUB_USB_SPEED_LOW;
else
return GRUB_USB_SPEED_FULL;
--
1.8.2.1
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