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Re: [Qemu-devel] [PATCH] ich9: initialise RCBA register through LPC inte
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH] ich9: initialise RCBA register through LPC interface |
Date: |
Wed, 27 May 2015 11:32:59 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 27/05/2015 02:28, Paulo Alcantara wrote:
> This patch initialises root complex register block BAR in order to
> support TCO watchdog emulation features on QEMU.
>
> Signed-off-by: Paulo Alcantara <address@hidden>
> ---
> src/fw/dev-q35.h | 3 +++
> src/fw/pciinit.c | 4 ++++
> 2 files changed, 7 insertions(+)
>
> diff --git a/src/fw/dev-q35.h b/src/fw/dev-q35.h
> index c6f8bd9..201825d 100644
> --- a/src/fw/dev-q35.h
> +++ b/src/fw/dev-q35.h
> @@ -27,6 +27,9 @@
> #define ICH9_LPC_GEN_PMCON_1_SMI_LOCK (1 << 4)
> #define ICH9_LPC_PORT_ELCR1 0x4d0
> #define ICH9_LPC_PORT_ELCR2 0x4d1
> +#define ICH9_LPC_RCBA 0xf0
> +#define ICH9_LPC_RCBA_ADDR 0xfed1c000
> +#define ICH9_LPC_RCBA_EN 0x1
> #define PCI_DEVICE_ID_INTEL_ICH9_SMBUS 0x2930
> #define ICH9_SMB_SMB_BASE 0x20
> #define ICH9_SMB_HOSTC 0x40
> diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c
> index ac39d23..defccf3 100644
> --- a/src/fw/pciinit.c
> +++ b/src/fw/pciinit.c
> @@ -183,6 +183,10 @@ static void mch_isa_bridge_setup(struct pci_device *dev,
> void *arg)
> /* acpi enable, SCI: IRQ9 000b = irq9*/
> pci_config_writeb(bdf, ICH9_LPC_ACPI_CTRL, ICH9_LPC_ACPI_CTRL_ACPI_EN);
>
> + /* set root complex register block BAR */
> + pci_config_writel(bdf, ICH9_LPC_RCBA,
> + ICH9_LPC_RCBA_ADDR | ICH9_LPC_RCBA_EN);
> +
> acpi_pm1a_cnt = acpi_pm_base + 0x04;
> pmtimer_setup(acpi_pm_base + 0x08);
> }
>
Reviewed-by: Paolo Bonzini <address@hidden>