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Re: [Qemu-devel] [PATCH v7 4/4] PC: differentiate hpet's interrupt capab
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH v7 4/4] PC: differentiate hpet's interrupt capability on piix and q35 |
Date: |
Thu, 17 Oct 2013 08:44:25 +0300 |
On Thu, Oct 17, 2013 at 11:16:05AM +0800, Liu Ping Fan wrote:
> For pc-piix-*, hpet's intcap is always hard coded as IRQ2.
> For q35, if it is pc-q35-1.7 and earlier, we use IRQ2 for compat
> reason, otherwise IRQ2, IRQ8, and IRQ16~23 are allowed.
>
> Signed-off-by: Liu Ping Fan <address@hidden>
> ---
> hw/i386/pc.c | 20 +++++++++++++++-----
> hw/i386/pc_piix.c | 7 ++++++-
> hw/i386/pc_q35.c | 6 +++++-
> include/hw/i386/pc.h | 11 ++++++++++-
> 4 files changed, 36 insertions(+), 8 deletions(-)
>
> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> index 72cc850..3e98ff0 100644
> --- a/hw/i386/pc.c
> +++ b/hw/i386/pc.c
> @@ -1219,7 +1219,8 @@ static const MemoryRegionOps ioportF0_io_ops = {
> void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
> ISADevice **rtc_state,
> ISADevice **floppy,
> - bool no_vmport)
> + bool no_vmport,
> + bool hpet_irqs)
> {
> int i;
> DriveInfo *fd[MAX_FD];
> @@ -1249,10 +1250,19 @@ void pc_basic_device_init(ISABus *isa_bus, qemu_irq
> *gsi,
> /* In order to set property, here not using sysbus_try_create_simple
> */
> hpet = qdev_try_create(NULL, "hpet");
> if (hpet) {
> - /* tmp fix. For compat, hard code to IRQ2 until we have correct
> - * compat property and differentiate pc-iix with pc-q35
> - */
> - qdev_prop_set_uint32(hpet, HPET_INTCAP, 0x4);
> + /* For pc-piix-*, hpet's intcap is always IRQ2. */
> + if (!hpet_irqs) {
So for piix the property is ignored even if set.
> + qdev_prop_set_uint32(hpet, HPET_INTCAP, 0x4);
> + } else {
> + /* For pc-q35-1.7 and earlier, use IRQ2 for compat.
Now you lost me. It's still 4 for 1.7?
You only target 1.8 then?
> + * Otherwise, use IRQ16~23, IRQ8 and IRQ2.
> + */
> + uint8_t compat = object_property_get_int(OBJECT(hpet),
> + HPET_INTCAP, NULL);
> + if (!compat) {
> + qdev_prop_set_uint32(hpet, HPET_INTCAP, 0xff0104);
> + }
> + }
> qdev_init_nofail(hpet);
> sysbus_mmio_map(SYS_BUS_DEVICE(hpet), 0, HPET_BASE);
>
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index c6042c7..a45ce11 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -180,7 +180,8 @@ static void pc_init1(QEMUMachineInitArgs *args,
> pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL);
>
> /* init basic PC hardware */
> - pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled());
> + pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled(),
> + false);
>
> pc_nic_init(isa_bus, pci_bus);
>
> @@ -346,6 +347,10 @@ static QEMUMachine pc_i440fx_machine_v1_7 = {
> .alias = "pc",
> .init = pc_init_pci,
> .is_default = 1,
> + .compat_props = (GlobalProperty[]) {
> + PC_COMPAT_1_7,
So you add this property for PIIX but it's then ignored?
That's kind of ugly.
Not sure how to fix this. Paolo?
> + { /* end of list */ }
> + },
> };
>
> #define PC_I440FX_1_6_MACHINE_OPTIONS PC_I440FX_MACHINE_OPTIONS
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index ca84e1c..124ecc1 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -181,7 +181,7 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
> pc_register_ferr_irq(gsi[13]);
>
> /* init basic PC hardware */
> - pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, false);
> + pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, false, true);
>
> /* connect pm stuff to lpc */
> ich9_lpc_pm_init(lpc);
> @@ -270,6 +270,10 @@ static QEMUMachine pc_q35_machine_v1_7 = {
> .name = "pc-q35-1.7",
> .alias = "q35",
> .init = pc_q35_init,
> + .compat_props = (GlobalProperty[]) {
> + PC_COMPAT_1_7,
> + { /* end of list */ }
> + },
> };
>
> #define PC_Q35_1_6_MACHINE_OPTIONS PC_Q35_MACHINE_OPTIONS
> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> index 1361a27..bfeccf2 100644
> --- a/include/hw/i386/pc.h
> +++ b/include/hw/i386/pc.h
> @@ -136,7 +136,8 @@ DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus
> *pci_bus);
> void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
> ISADevice **rtc_state,
> ISADevice **floppy,
> - bool no_vmport);
> + bool no_vmport,
> + bool hpet_irqs);
> void pc_init_ne2k_isa(ISABus *bus, NICInfo *nd);
> void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
> const char *boot_device,
> @@ -227,7 +228,15 @@ void pvpanic_init(ISABus *bus);
>
> int e820_add_entry(uint64_t, uint64_t, uint32_t);
>
> +#define PC_COMPAT_1_7 \
> + {\
> + .driver = "hpet",\
> + .property = HPET_INTCAP,\
> + .value = stringify(4),\
> + }
> +
> #define PC_COMPAT_1_6 \
> + PC_COMPAT_1_7, \
> {\
> .driver = "e1000",\
> .property = "mitigation",\
> --
> 1.8.1.4
- [Qemu-devel] [PATCH v7 0/4] bugs fix for hpet, Liu Ping Fan, 2013/10/16
- [Qemu-devel] [PATCH v7 1/4] hpet: inverse polarity when pin above ISA_NUM_IRQS, Liu Ping Fan, 2013/10/16
- [Qemu-devel] [PATCH v7 2/4] hpet: enable to entitle more irq pins for hpet, Liu Ping Fan, 2013/10/16
- [Qemu-devel] [PATCH v7 3/4] PC: use qdev_xx to create hpet instead of sysbus_create_xx, Liu Ping Fan, 2013/10/16
- [Qemu-devel] [PATCH v7 4/4] PC: differentiate hpet's interrupt capability on piix and q35, Liu Ping Fan, 2013/10/16
- Re: [Qemu-devel] [PATCH v7 4/4] PC: differentiate hpet's interrupt capability on piix and q35,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCH v7 4/4] PC: differentiate hpet's interrupt capability on piix and q35, Paolo Bonzini, 2013/10/17
- Re: [Qemu-devel] [PATCH v7 4/4] PC: differentiate hpet's interrupt capability on piix and q35, Paolo Bonzini, 2013/10/17
- Re: [Qemu-devel] [PATCH v7 0/4] bugs fix for hpet, Michael S. Tsirkin, 2013/10/17