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From f7572e4bdfc5c0c57d6a37712c6f5b79cc86e063 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
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Date: Wed, 13 Dec 2017 13:38:39 +0100
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Subject: [PATCH 08/41] Enable fw_cfg DMA interface for x86
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
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Message-id: <20171213133912.26176-9-marcandre.lureau@redhat.com>
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Patchwork-id: 78357
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O-Subject: [RHEL-7.5 qemu-kvm PATCH v3 08/41] Enable fw_cfg DMA interface for x86
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Bugzilla: 1411490
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: Marc Marí <markmb@redhat.com>
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Enable the fw_cfg DMA interface for all the x86 platforms.
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Based on Gerd Hoffman's initial implementation.
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Signed-off-by: Marc Marí <markmb@redhat.com>
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Reviewed-by: Laszlo Ersek <lersek@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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(cherry picked from commit c886fc4c20ff8456b2f788a1404dd321b8b59243)
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/i386/pc.c | 6 +++---
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1 file changed, 3 insertions(+), 3 deletions(-)
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diff --git a/hw/i386/pc.c b/hw/i386/pc.c
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index 29d6588..e2fd732 100644
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--- a/hw/i386/pc.c
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+++ b/hw/i386/pc.c
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@@ -600,7 +600,7 @@ static unsigned int pc_apic_id_limit(unsigned int max_cpus)
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return x86_cpu_apic_id_from_index(max_cpus - 1) + 1;
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}
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-static FWCfgState *bochs_bios_init(void)
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+static FWCfgState *bochs_bios_init(AddressSpace *as)
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{
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FWCfgState *fw_cfg;
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uint8_t *smbios_table;
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@@ -609,7 +609,7 @@ static FWCfgState *bochs_bios_init(void)
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int i, j;
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unsigned int apic_id_limit = pc_apic_id_limit(max_cpus);
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- fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
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+ fw_cfg = fw_cfg_init_io_dma(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 4, as);
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/* FW_CFG_MAX_CPUS is a bit confusing/problematic on x86:
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*
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* SeaBIOS needs FW_CFG_MAX_CPUS for CPU hotplug, but the CPU hotplug
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@@ -1172,7 +1172,7 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory,
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option_rom_mr,
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1);
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- fw_cfg = bochs_bios_init();
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+ fw_cfg = bochs_bios_init(&address_space_memory);
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rom_set_fw(fw_cfg);
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if (linux_boot) {
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--
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1.8.3.1
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