Il 09/10/2012 05:30, Jason Baron ha scritto:
> From: Jason Baron <jba...@redhat.com>
>
> Introduce IF_AHCI so that q35 can differentiate between ide and ahci disks.
> This allows q35 to specify its default disk type. It also allows q35 to
> differentiate between ahci and ide disks, such that -drive if=ide does not
> result in the creating of an ahci disk. This is important, since we don't want
> to have the meaning of if=ide changing once q35 is introduced. Thus, its
> important for this to be applied before we introduce q35.
>
> This patch also adds:
>
> pci_ahci_create_devs(PCIDevice *pci_dev, DriveInfo **hd_table)
>
> Which provides a convient way of attaching ahci drives to an
> ahci controller.
>
> Signed-off-by: Jason Baron <jba...@redhat.com>
Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
> ---
> blockdev.c | 13 ++++++++++++-
> blockdev.h | 2 ++
> hw/ide.h | 6 ++++++
> hw/ide/ahci.c | 18 ++++++++++++++++++
> hw/ide/core.c | 23 ++++++++++++++++++-----
> 5 files changed, 56 insertions(+), 6 deletions(-)
>
> diff --git a/blockdev.c b/blockdev.c
> index 93a7bf7..9ccc150 100644
> --- a/blockdev.c
> +++ b/blockdev.c
> @@ -32,6 +32,7 @@ static const char *const if_name[IF_COUNT] = {
> [IF_SD] = "sd",
> [IF_VIRTIO] = "virtio",
> [IF_XEN] = "xen",
> + [IF_AHCI] = "ahci",
> };
>
> static const int if_max_devs[IF_COUNT] = {
> @@ -51,8 +52,17 @@ static const int if_max_devs[IF_COUNT] = {
> */
> [IF_IDE] = 2,
> [IF_SCSI] = 7,
> + [IF_AHCI] = 6,
> };
>
> +int get_if_max_devs(BlockInterfaceType if_type)
> +{
> + assert(if_type < IF_COUNT);
> + assert(if_type >= IF_DEFAULT);
> +
> + return if_max_devs[if_type];
> +}
> +
> /*
> * We automatically delete the drive when a device using it gets
> * unplugged. Questionable feature, but we can't just drop it.
> @@ -517,7 +527,7 @@ DriveInfo *drive_init(QemuOpts *opts, int mach_if)
> } else {
> /* no id supplied -> create one */
> dinfo->id = g_malloc0(32);
> - if (type == IF_IDE || type == IF_SCSI)
> + if (type == IF_IDE || type == IF_SCSI || type == IF_AHCI)
> mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
> if (max_devs)
> snprintf(dinfo->id, 32, "%s%i%s%i",
> @@ -549,6 +559,7 @@ DriveInfo *drive_init(QemuOpts *opts, int mach_if)
>
> switch(type) {
> case IF_IDE:
> + case IF_AHCI:
> case IF_SCSI:
> case IF_XEN:
> case IF_NONE:
> diff --git a/blockdev.h b/blockdev.h
> index 8b126ad..bbd1017 100644
> --- a/blockdev.h
> +++ b/blockdev.h
> @@ -21,6 +21,7 @@ typedef enum {
> IF_DEFAULT = -1, /* for use with drive_add() only */
> IF_NONE,
> IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
> + IF_AHCI,
> IF_COUNT
> } BlockInterfaceType;
>
> @@ -56,6 +57,7 @@ static inline int get_mach_if(int mach_if)
> return mach_if;
> }
>
> +int get_if_max_devs(BlockInterfaceType if_type);
> DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
> DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
> int drive_get_max_bus(BlockInterfaceType type);
> diff --git a/hw/ide.h b/hw/ide.h
> index 2db4079..0b7e000 100644
> --- a/hw/ide.h
> +++ b/hw/ide.h
> @@ -4,6 +4,7 @@
> #include "isa.h"
> #include "pci.h"
> #include "memory.h"
> +#include "blockdev.h"
>
> #define MAX_IDE_DEVS 2
>
> @@ -34,6 +35,11 @@ int ide_get_geometry(BusState *bus, int unit,
> int ide_get_bios_chs_trans(BusState *bus, int unit);
>
> /* ide/core.c */
> +void ata_drive_get(DriveInfo **hd, int max_bus, BlockInterfaceType type);
> void ide_drive_get(DriveInfo **hd, int max_bus);
> +void ahci_drive_get(DriveInfo **hd, int max_bus);
> +
> +/* ide/ahci.c */
> +void pci_ahci_create_devs(PCIDevice *pci_dev, DriveInfo **hd_table);
>
> #endif /* HW_IDE_H */
> diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
> index 68671bc..824b86f 100644
> --- a/hw/ide/ahci.c
> +++ b/hw/ide/ahci.c
> @@ -26,6 +26,7 @@
> #include <hw/pc.h>
> #include <hw/pci.h>
> #include <hw/sysbus.h>
> +#include <blockdev.h>
>
> #include "monitor.h"
> #include "dma.h"
> @@ -1260,3 +1261,20 @@ static void sysbus_ahci_register_types(void)
> }
>
> type_init(sysbus_ahci_register_types)
> +
> +void pci_ahci_create_devs(PCIDevice *pci_dev, DriveInfo **hd_table)
> +{
> + struct AHCIPCIState *dev = DO_UPCAST(struct AHCIPCIState, card, pci_dev);
> + int i;
> + DriveInfo *drive;
> +
> + for (i = 0; i < dev->ahci.ports; i++) {
> + if (hd_table[i] == NULL) {
> + continue;
> + }
> + drive = hd_table[i];
> + assert(drive->type == IF_AHCI);
> + ide_create_drive(&dev->ahci.dev[i].port, 0,
> + hd_table[i]);
> + }
> +}
> diff --git a/hw/ide/core.c b/hw/ide/core.c
> index d6fb69c..f2fcc79 100644
> --- a/hw/ide/core.c
> +++ b/hw/ide/core.c
> @@ -2351,16 +2351,29 @@ const VMStateDescription vmstate_ide_bus = {
> }
> };
>
> -void ide_drive_get(DriveInfo **hd, int max_bus)
> +void ata_drive_get(DriveInfo **hd, int max_bus, BlockInterfaceType type)
> {
> int i;
> + int max_devs;
> +
> + assert((type == IF_IDE) || type == IF_AHCI);
>
> - if (drive_get_max_bus(IF_IDE) >= max_bus) {
> + if (drive_get_max_bus(type) >= max_bus) {
> fprintf(stderr, "qemu: too many IDE bus: %d\n", max_bus);
> exit(1);
> }
> -
> - for(i = 0; i < max_bus * MAX_IDE_DEVS; i++) {
> - hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
> + max_devs = get_if_max_devs(type);
> + for (i = 0; i < max_bus * max_devs; i++) {
> + hd[i] = drive_get(type, i / max_devs, i % max_devs);
> }
> }
> +
> +void ide_drive_get(DriveInfo **hd, int max_bus)
> +{
> + ata_drive_get(hd, max_bus, IF_IDE);
> +}
> +
> +void ahci_drive_get(DriveInfo **hd, int max_bus)
> +{
> + ata_drive_get(hd, max_bus, IF_AHCI);
> +}
>
