# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1306943416 -3600
# Node ID 221f431092c04df90ed017f7471ce9641356d40d
# Parent 303635b6fe5bd523e0919b0e60fd69b1a4322c55
hvmloader: add code to generate a $PIR table.
Does not replace the table hardcoded in ROMBIOS (it ain't broke) but
is used for SeaBIOS.
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
diff -r 303635b6fe5b -r 221f431092c0 tools/firmware/hvmloader/Makefile
--- a/tools/firmware/hvmloader/Makefile Wed Jun 01 16:49:23 2011 +0100
+++ b/tools/firmware/hvmloader/Makefile Wed Jun 01 16:50:16 2011 +0100
@@ -30,7 +30,7 @@
OBJS = hvmloader.o mp_tables.o util.o smbios.o
OBJS += 32bitbios_support.o smp.o cacheattr.o xenbus.o
-OBJS += e820.o pci.o
+OBJS += e820.o pci.o pir.o
ifeq ($(debug),y)
OBJS += tests.o
endif
diff -r 303635b6fe5b -r 221f431092c0 tools/firmware/hvmloader/config.h
--- a/tools/firmware/hvmloader/config.h Wed Jun 01 16:49:23 2011 +0100
+++ b/tools/firmware/hvmloader/config.h Wed Jun 01 16:50:16 2011 +0100
@@ -31,6 +31,7 @@
void (*acpi_build_tables)(void);
void (*create_mp_tables)(void);
void (*create_smbios_tables)(void);
+ void (*create_pir_tables)(void);
};
extern struct bios_config rombios_config;
diff -r 303635b6fe5b -r 221f431092c0 tools/firmware/hvmloader/hvmloader.c
--- a/tools/firmware/hvmloader/hvmloader.c Wed Jun 01 16:49:23 2011 +0100
+++ b/tools/firmware/hvmloader/hvmloader.c Wed Jun 01 16:50:16 2011 +0100
@@ -423,9 +423,12 @@
if (bios->bios_relocate)
bios->bios_relocate();
- if ( bios->create_mp_tables &&
- ( (hvm_info->nr_vcpus > 1) || hvm_info->apic_mode ) )
- bios->create_mp_tables();
+ if ( (hvm_info->nr_vcpus > 1) || hvm_info->apic_mode ) {
+ if ( bios->create_mp_tables )
+ bios->create_mp_tables();
+ if ( bios->create_pir_tables )
+ bios->create_pir_tables();
+ }
if ( bios->load_roms )
{
diff -r 303635b6fe5b -r 221f431092c0 tools/firmware/hvmloader/pir.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/firmware/hvmloader/pir.c Wed Jun 01 16:50:16 2011 +0100
@@ -0,0 +1,67 @@
+/*
+ * pir.c: Support for genrating $PIR tables.
+ *
+ * Copyright (c) 2011 Citrix Systems Inc
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#include "config.h"
+#include "pir_types.h"
+#include "util.h"
+
+/*
+ * The structure of these tables is described in
+ * http://www.microsoft.com/taiwan/whdc/archive/pciirq.mspx
+ */
+unsigned long create_pir_tables(void)
+{
+ int length = sizeof(struct pir_table) + sizeof(struct
pir_slot)*NR_PIR_SLOTS;
+ struct pir_table *pir = scratch_alloc(length, 0);
+ int i, checksum;
+
+ memset(pir, 0, length);
+
+ memcpy(pir->signature, "$PIR", 4);
+ pir->version = 0x0100;
+ pir->length = length;
+
+ pir->router_bus = 0;
+ pir->router_devfn = PCI_ISA_DEVFN;
+ pir->router_vid = 0x8086;
+ pir->router_did = 0x122e;
+
+ pir->pci_irqs = 0x0000;
+
+ for ( i = 0 ; i < NR_PIR_SLOTS; i++ )
+ {
+ struct pir_slot *slot = &pir->slots[i];
+ slot->slot = i;
+ slot->bus = 0;
+ slot->dev = i<<3;
+ slot->link_a = 0x60 + (i+1)%4;
+ slot->bitmap_a = PCI_ISA_IRQ_MASK;
+ slot->link_b = 0x60 + (i+2)%4;
+ slot->bitmap_b = PCI_ISA_IRQ_MASK;
+ slot->link_c = 0x60 + (i+3)%4;
+ slot->bitmap_c = PCI_ISA_IRQ_MASK;
+ slot->link_d = 0x60 + (i+4)%4;
+ slot->bitmap_d = PCI_ISA_IRQ_MASK;
+ }
+
+ checksum = 0;
+ for ( i = 0; i < length; i++)
+ {
+ checksum += ((int8_t *)pir)[i];
+ }
+ pir->checksum = -checksum;
+
+ return (unsigned long)pir;
+}
diff -r 303635b6fe5b -r 221f431092c0 tools/firmware/hvmloader/pir_types.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/firmware/hvmloader/pir_types.h Wed Jun 01 16:50:16 2011 +0100
@@ -0,0 +1,61 @@
+/*
+ * pir_types.h - data structure definitions for Xen HVM $PIR support
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) Citrix Systems, 2011
+ *
+ * See the PCI Interrupt Routing spec for more detail:
+ * http://www.microsoft.com/taiwan/whdc/archive/pciirq.mspx
+ */
+
+#ifndef PIR_TYPES_H
+#define PIR_TYPES_H
+
+#include <stdint.h>
+
+#define NR_PIR_SLOTS 6
+
+struct pir_slot {
+ uint8_t bus;
+ uint8_t dev;
+ uint8_t link_a;
+ uint16_t bitmap_a;
+ uint8_t link_b;
+ uint16_t bitmap_b;
+ uint8_t link_c;
+ uint16_t bitmap_c;
+ uint8_t link_d;
+ uint16_t bitmap_d;
+ uint8_t slot;
+ uint8_t reserved;
+} __attribute__ ((packed));
+
+struct pir_table {
+ char signature[4];
+ uint16_t version;
+ uint16_t length;
+ uint8_t router_bus;
+ uint8_t router_devfn;
+ uint16_t pci_irqs;
+ uint16_t router_vid;
+ uint16_t router_did;
+ uint32_t miniport_data;
+ uint8_t reserved[11];
+ uint8_t checksum;
+ struct pir_slot slots[0];
+} __attribute__ ((packed));
+
+#endif
diff -r 303635b6fe5b -r 221f431092c0 tools/firmware/hvmloader/rombios.c
--- a/tools/firmware/hvmloader/rombios.c Wed Jun 01 16:49:23 2011 +0100
+++ b/tools/firmware/hvmloader/rombios.c Wed Jun 01 16:50:16 2011 +0100
@@ -187,6 +187,7 @@
.acpi_build_tables = rombios_acpi_build_tables,
.create_mp_tables = rombios_create_mp_tables,
.create_smbios_tables = rombios_create_smbios_tables,
+ .create_pir_tables = NULL, /* embedded in ROMBIOS */
};
/*
diff -r 303635b6fe5b -r 221f431092c0 tools/firmware/hvmloader/seabios.c
--- a/tools/firmware/hvmloader/seabios.c Wed Jun 01 16:49:23 2011 +0100
+++ b/tools/firmware/hvmloader/seabios.c Wed Jun 01 16:50:16 2011 +0100
@@ -107,6 +107,11 @@
add_table(ep);
}
+static void seabios_create_pir_tables(void)
+{
+ add_table(create_pir_tables());
+}
+
static void seabios_setup_e820(void)
{
struct seabios_info *info = (void *)BIOS_INFO_PHYSICAL_ADDRESS;
@@ -142,6 +147,7 @@
.acpi_build_tables = seabios_acpi_build_tables,
.create_mp_tables = seabios_create_mp_tables,
.create_smbios_tables = seabios_create_smbios_tables,
+ .create_pir_tables = seabios_create_pir_tables,
};
/*
diff -r 303635b6fe5b -r 221f431092c0 tools/firmware/hvmloader/util.h
--- a/tools/firmware/hvmloader/util.h Wed Jun 01 16:49:23 2011 +0100
+++ b/tools/firmware/hvmloader/util.h Wed Jun 01 16:50:16 2011 +0100
@@ -195,6 +195,8 @@
void hvm_write_smbios_tables(unsigned long ep,
unsigned long smbios_start,
unsigned long smbios_end);
+unsigned long create_pir_tables(void);
+
void smp_initialise(void);
#include "e820.h"
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