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grub2/0393-Make-PCI-init-in-i386-qemu-port-more-robust.patch
Peter Jones 31004e676e Rebase to upstream snapshot.
2013-06-07 14:03:56 -04:00

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From d164941306b06f408c3b2fb6a3176d1b8e2412d1 Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Mon, 29 Apr 2013 15:09:39 +0200
Subject: [PATCH 393/471] Make PCI init in i386-qemu port more robust.
---
ChangeLog | 6 +-
grub-core/Makefile.core.def | 4 +-
grub-core/bus/usb/uhci.c | 10 +-
grub-core/disk/ahci.c | 3 -
grub-core/kern/i386/coreboot/init.c | 22 +--
grub-core/kern/i386/qemu/init.c | 284 ++++++++++++++++++++++++++++++++++++
grub-core/kern/mips/loongson/init.c | 3 +-
grub-core/kern/vga_init.c | 35 -----
include/grub/pci.h | 1 +
9 files changed, 299 insertions(+), 69 deletions(-)
create mode 100644 grub-core/kern/i386/qemu/init.c
diff --git a/ChangeLog b/ChangeLog
index 86effa0..ece8586 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,8 @@
-2013-04-29 Vladimir Testov <vladimir.testov@rosalab.ru>
+2013-04-29 Vladimir Serbinenko <phcoder@gmail.com>
+
+ Make PCI init in i386-qemu port more robust.
+
+2013-04-29 Vladimir Testov <vladimir.testov@rosalab.ru>
* grub-core/gfxmenu/gui_list.c: Refresh first_shown_entry value when
cached view is reused.
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index ebcd01d..7e19acb 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -134,7 +134,9 @@ kernel = {
i386 = kern/i386/dl.c;
- i386_coreboot_multiboot_qemu = kern/i386/coreboot/init.c;
+ i386_coreboot = kern/i386/coreboot/init.c;
+ i386_multiboot = kern/i386/coreboot/init.c;
+ i386_qemu = kern/i386/qemu/init.c;
i386_coreboot_multiboot_qemu = term/i386/pc/vga_text.c;
efi = disk/efi/efidisk.c;
diff --git a/grub-core/bus/usb/uhci.c b/grub-core/bus/usb/uhci.c
index c2e2e7e..0fca1a1 100644
--- a/grub-core/bus/usb/uhci.c
+++ b/grub-core/bus/usb/uhci.c
@@ -236,15 +236,7 @@ grub_uhci_pci_iter (grub_pci_device_t dev,
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
- }
+ return 0;
grub_dprintf ("uhci", "base = %x\n", base);
diff --git a/grub-core/disk/ahci.c b/grub-core/disk/ahci.c
index 554fcc5..58bc190 100644
--- a/grub-core/disk/ahci.c
+++ b/grub-core/disk/ahci.c
@@ -185,9 +185,6 @@ grub_ahci_pciinit (grub_pci_device_t dev,
addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG5);
-#ifdef GRUB_MACHINE_QEMU
- grub_pci_write (addr, 0xf4000000);
-#endif
bar = grub_pci_read (addr);
if ((bar & (GRUB_PCI_ADDR_SPACE_MASK | GRUB_PCI_ADDR_MEM_TYPE_MASK
diff --git a/grub-core/kern/i386/coreboot/init.c b/grub-core/kern/i386/coreboot/init.c
index bfc8f3f..7cd530d 100644
--- a/grub-core/kern/i386/coreboot/init.c
+++ b/grub-core/kern/i386/coreboot/init.c
@@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
- * Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
+ * Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2013 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -34,9 +34,6 @@
#include <grub/cpu/io.h>
#include <grub/cpu/floppy.h>
#include <grub/cpu/tsc.h>
-#ifdef GRUB_MACHINE_QEMU
-#include <grub/machine/kernel.h>
-#endif
extern grub_uint8_t _start[];
extern grub_uint8_t _end[];
@@ -51,12 +48,8 @@ grub_exit (void)
grub_cpu_idle ();
}
-#ifdef GRUB_MACHINE_QEMU
-grub_addr_t grub_modbase;
-#else
grub_addr_t grub_modbase = GRUB_KERNEL_I386_COREBOOT_MODULES_ADDR;
static grub_uint64_t modend;
-#endif
/* Helper for grub_machine_init. */
static int
@@ -80,10 +73,8 @@ heap_init (grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type,
if (begin < GRUB_MEMORY_MACHINE_LOWER_SIZE)
begin = GRUB_MEMORY_MACHINE_LOWER_SIZE;
-#ifndef GRUB_MACHINE_QEMU
if (modend && begin < modend)
begin = modend;
-#endif
if (end <= begin)
return 0;
@@ -96,18 +87,11 @@ heap_init (grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type,
void
grub_machine_init (void)
{
-#ifdef GRUB_MACHINE_QEMU
- grub_modbase = grub_core_entry_addr + (_edata - _start);
-
- grub_qemu_init_cirrus ();
-#endif
-#ifndef GRUB_MACHINE_QEMU
modend = grub_modules_get_end ();
-#endif
- /* Initialize the console as early as possible. */
+
grub_vga_text_init ();
-#if defined (GRUB_MACHINE_MULTIBOOT) || defined (GRUB_MACHINE_QEMU)
+#ifdef GRUB_MACHINE_MULTIBOOT
grub_machine_mmap_init ();
#endif
grub_machine_mmap_iterate (heap_init, NULL);
diff --git a/grub-core/kern/i386/qemu/init.c b/grub-core/kern/i386/qemu/init.c
new file mode 100644
index 0000000..cad6c40
--- /dev/null
+++ b/grub-core/kern/i386/qemu/init.c
@@ -0,0 +1,284 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2013 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/kernel.h>
+#include <grub/mm.h>
+#include <grub/machine/time.h>
+#include <grub/machine/memory.h>
+#include <grub/machine/console.h>
+#include <grub/offsets.h>
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/dl.h>
+#include <grub/misc.h>
+#include <grub/loader.h>
+#include <grub/env.h>
+#include <grub/cache.h>
+#include <grub/time.h>
+#include <grub/symbol.h>
+#include <grub/cpu/io.h>
+#include <grub/cpu/floppy.h>
+#include <grub/cpu/tsc.h>
+#include <grub/machine/kernel.h>
+#include <grub/pci.h>
+
+extern grub_uint8_t _start[];
+extern grub_uint8_t _end[];
+extern grub_uint8_t _edata[];
+
+void __attribute__ ((noreturn))
+grub_exit (void)
+{
+ /* We can't use grub_fatal() in this function. This would create an infinite
+ loop, since grub_fatal() calls grub_abort() which in turn calls grub_exit(). */
+ while (1)
+ grub_cpu_idle ();
+}
+
+grub_addr_t grub_modbase;
+
+/* Helper for grub_machine_init. */
+static int
+heap_init (grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type,
+ void *data __attribute__ ((unused)))
+{
+ grub_uint64_t begin = addr, end = addr + size;
+
+#if GRUB_CPU_SIZEOF_VOID_P == 4
+ /* Restrict ourselves to 32-bit memory space. */
+ if (begin > GRUB_ULONG_MAX)
+ return 0;
+ if (end > GRUB_ULONG_MAX)
+ end = GRUB_ULONG_MAX;
+#endif
+
+ if (type != GRUB_MEMORY_AVAILABLE)
+ return 0;
+
+ /* Avoid the lower memory. */
+ if (begin < GRUB_MEMORY_MACHINE_LOWER_SIZE)
+ begin = GRUB_MEMORY_MACHINE_LOWER_SIZE;
+
+ if (end <= begin)
+ return 0;
+
+ grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) (end - begin));
+
+ return 0;
+}
+
+struct resource
+{
+ grub_pci_device_t dev;
+ int type;
+ grub_size_t size;
+ int bar;
+};
+
+struct iterator_ctx
+{
+ struct resource *resources;
+ grub_size_t nresources;
+};
+
+static int
+count_cards (grub_pci_device_t dev __attribute__ ((unused)),
+ grub_pci_id_t pciid __attribute__ ((unused)),
+ void *data)
+{
+ int *cnt = data;
+
+ (*cnt)++;
+
+ return 0;
+}
+
+static int
+find_resources (grub_pci_device_t dev,
+ grub_pci_id_t pciid __attribute__ ((unused)),
+ void *data)
+{
+ struct iterator_ctx *ctx = data;
+ int bar;
+
+ for (bar = 0; bar < 6; bar++)
+ {
+ grub_pci_address_t addr;
+ grub_uint32_t ones, zeros, mask;
+ struct resource *res;
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0
+ + 4 * bar);
+ grub_pci_write (addr, 0xffffffff);
+ grub_pci_read (addr);
+ ones = grub_pci_read (addr);
+ grub_pci_write (addr, 0);
+ grub_pci_read (addr);
+ zeros = grub_pci_read (addr);
+ if (ones == zeros)
+ continue;
+ res = &ctx->resources[ctx->nresources++];
+ if ((zeros & GRUB_PCI_ADDR_SPACE_MASK) == GRUB_PCI_ADDR_SPACE_IO)
+ mask = GRUB_PCI_ADDR_SPACE_MASK;
+ else
+ mask = (GRUB_PCI_ADDR_MEM_TYPE_MASK | GRUB_PCI_ADDR_SPACE_MASK | GRUB_PCI_ADDR_MEM_PREFETCH);
+
+ res->type = ones & mask;
+ res->dev = dev;
+ res->bar = bar;
+ res->size = (~((zeros ^ ones)) | mask) + 1;
+ if ((zeros & (GRUB_PCI_ADDR_MEM_TYPE_MASK | GRUB_PCI_ADDR_SPACE_MASK))
+ == (GRUB_PCI_ADDR_SPACE_MEMORY | GRUB_PCI_ADDR_MEM_TYPE_64))
+ bar++;
+ }
+ return 0;
+}
+
+static int
+enable_cards (grub_pci_device_t dev,
+ grub_pci_id_t pciid __attribute__ ((unused)),
+ void *data __attribute__ ((unused)))
+{
+ grub_uint16_t cmd = 0;
+ grub_pci_address_t addr;
+ grub_uint32_t class;
+ int bar;
+
+ for (bar = 0; bar < 6; bar++)
+ {
+ grub_uint32_t val;
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0
+ + 4 * bar);
+ val = grub_pci_read (addr);
+ if (!val)
+ continue;
+ if ((val & GRUB_PCI_ADDR_SPACE_MASK) == GRUB_PCI_ADDR_SPACE_IO)
+ cmd |= GRUB_PCI_COMMAND_IO_ENABLED;
+ else
+ cmd |= GRUB_PCI_COMMAND_MEM_ENABLED;
+ }
+
+ class = (grub_pci_read (addr) >> 16) & 0xffff;
+
+ if (class == GRUB_PCI_CLASS_SUBCLASS_VGA)
+ cmd |= GRUB_PCI_COMMAND_IO_ENABLED
+ | GRUB_PCI_COMMAND_MEM_ENABLED;
+
+ if (class == GRUB_PCI_CLASS_SUBCLASS_USB)
+ return 0;
+
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
+ grub_pci_write (addr, cmd);
+
+ return 0;
+}
+
+static void
+grub_pci_assign_addresses (void)
+{
+ int ncards = 0;
+ struct iterator_ctx ctx;
+
+ grub_pci_iterate (count_cards, &ncards);
+
+ {
+ struct resource resources[ncards * 6];
+ int done;
+ unsigned i;
+ ctx.nresources = 0;
+ ctx.resources = resources;
+ grub_uint32_t memptr = 0xf0000000;
+ grub_uint16_t ioptr = 0x1000;
+
+ grub_pci_iterate (find_resources, &ctx);
+ /* FIXME: do we need a better sort here? */
+ do
+ {
+ done = 0;
+ for (i = 0; i + 1 < ctx.nresources; i++)
+ if (resources[i].size < resources[i+1].size)
+ {
+ struct resource t;
+ t = resources[i];
+ resources[i] = resources[i+1];
+ resources[i+1] = t;
+ done = 1;
+ }
+ }
+ while (done);
+
+ for (i = 0; i < ctx.nresources; i++)
+ {
+ grub_pci_address_t addr;
+ addr = grub_pci_make_address (resources[i].dev,
+ GRUB_PCI_REG_ADDRESS_REG0
+ + 4 * resources[i].bar);
+ if ((resources[i].type & GRUB_PCI_ADDR_SPACE_MASK)
+ == GRUB_PCI_ADDR_SPACE_IO)
+ {
+ grub_pci_write (addr, ioptr | resources[i].type);
+ ioptr += resources[i].size;
+ }
+ else
+ {
+ grub_pci_write (addr, memptr | resources[i].type);
+ memptr += resources[i].size;
+ if ((resources[i].type & (GRUB_PCI_ADDR_MEM_TYPE_MASK
+ | GRUB_PCI_ADDR_SPACE_MASK))
+ == (GRUB_PCI_ADDR_SPACE_MEMORY | GRUB_PCI_ADDR_MEM_TYPE_64))
+ {
+ addr = grub_pci_make_address (resources[i].dev,
+ GRUB_PCI_REG_ADDRESS_REG0
+ + 4 * resources[i].bar + 4);
+ grub_pci_write (addr, 0);
+ }
+ }
+ }
+ grub_pci_iterate (enable_cards, NULL);
+ }
+}
+
+void
+grub_machine_init (void)
+{
+ grub_modbase = grub_core_entry_addr + (_edata - _start);
+
+ grub_pci_assign_addresses ();
+
+ grub_qemu_init_cirrus ();
+
+ grub_vga_text_init ();
+
+ grub_machine_mmap_init ();
+ grub_machine_mmap_iterate (heap_init, NULL);
+
+
+ grub_tsc_init ();
+}
+
+void
+grub_machine_get_bootlocation (char **device __attribute__ ((unused)),
+ char **path __attribute__ ((unused)))
+{
+}
+
+void
+grub_machine_fini (void)
+{
+ grub_vga_text_fini ();
+ grub_stop_floppy ();
+}
diff --git a/grub-core/kern/mips/loongson/init.c b/grub-core/kern/mips/loongson/init.c
index 1abcf1a..52cbfd4 100644
--- a/grub-core/kern/mips/loongson/init.c
+++ b/grub-core/kern/mips/loongson/init.c
@@ -55,7 +55,8 @@ set_card (grub_pci_device_t dev, grub_pci_id_t pciid,
void *data __attribute__ ((unused)))
{
grub_pci_address_t addr;
- /* FIXME: autoscan for BARs and devices. */
+ /* We could use grub_pci_assign_addresses for this but we prefer to
+ have exactly same memory map as on pmon. */
switch (pciid)
{
case GRUB_LOONGSON_OHCI_PCIID:
diff --git a/grub-core/kern/vga_init.c b/grub-core/kern/vga_init.c
index 1119bb3..301721d 100644
--- a/grub-core/kern/vga_init.c
+++ b/grub-core/kern/vga_init.c
@@ -88,44 +88,9 @@ load_palette (void)
grub_vga_palette_write (i, colors[i].r, colors[i].g, colors[i].b);
}
-#ifndef __mips__
-/* Helper for grub_qemu_init_cirrus. */
-static int
-find_card (grub_pci_device_t dev, grub_pci_id_t pciid __attribute__ ((unused)),
- void *data __attribute__ ((unused)))
-{
- grub_pci_address_t addr;
- grub_uint32_t class;
-
- addr = grub_pci_make_address (dev, GRUB_PCI_REG_CLASS);
- class = grub_pci_read (addr);
-
- if (((class >> 16) & 0xffff) != GRUB_PCI_CLASS_SUBCLASS_VGA)
- return 0;
-
- /* FIXME: chooose addresses dynamically. */
- addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
- grub_pci_write (addr, 0xf0000000 | GRUB_PCI_ADDR_MEM_PREFETCH
- | GRUB_PCI_ADDR_SPACE_MEMORY | GRUB_PCI_ADDR_MEM_TYPE_32);
- addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG1);
- grub_pci_write (addr, 0xf2000000
- | GRUB_PCI_ADDR_SPACE_MEMORY | GRUB_PCI_ADDR_MEM_TYPE_32);
-
- addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
- grub_pci_write (addr, GRUB_PCI_COMMAND_MEM_ENABLED
- | GRUB_PCI_COMMAND_IO_ENABLED);
-
- return 1;
-}
-#endif
-
void
grub_qemu_init_cirrus (void)
{
-#ifndef __mips__
- grub_pci_iterate (find_card, NULL);
-#endif
-
grub_outb (GRUB_VGA_IO_MISC_COLOR,
GRUB_MACHINE_PCI_IO_BASE + GRUB_VGA_IO_MISC_WRITE);
diff --git a/include/grub/pci.h b/include/grub/pci.h
index e163d47..70d9a05 100644
--- a/include/grub/pci.h
+++ b/include/grub/pci.h
@@ -81,6 +81,7 @@
#define GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT 9
#define GRUB_PCI_STATUS_DEVSEL_TIMING_MASK 0x0600
#define GRUB_PCI_CLASS_SUBCLASS_VGA 0x0300
+#define GRUB_PCI_CLASS_SUBCLASS_USB 0x0c03
#ifndef ASM_FILE
--
1.8.2.1
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