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[aoe] Allow AoE device to be described using an EFI device path

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There is no standard defined for AoE device paths in the UEFI
specification, and it seems unlikely that any standard will be adopted
in future.

Choose to construct an AoE device path using a concatenation of the
network device path and a SATA device path, treating the AoE major and
minor numbers as the HBA port number and port multiplier port number
respectively.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2020-10-19 14:42:11 +01:00
parent 2d49ce6f08
commit 04cb17de50
4 changed files with 82 additions and 29 deletions
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31
src/include/ipxe/aoe.h
View File

@@ -15,6 +15,8 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <ipxe/retry.h>
#include <ipxe/ata.h>
#include <ipxe/acpi.h>
#include <ipxe/netdevice.h>
#include <ipxe/interface.h>
/** An AoE config command */
struct aoecfg {
@@ -109,6 +111,35 @@ struct aoehdr {
/** Maximum number of sectors per packet */
#define AOE_MAX_COUNT 2
/** An AoE device */
struct aoe_device {
/** Reference counter */
struct refcnt refcnt;
/** Network device */
struct net_device *netdev;
/** ATA command issuing interface */
struct interface ata;
/** Major number */
uint16_t major;
/** Minor number */
uint8_t minor;
/** Target MAC address */
uint8_t target[MAX_LL_ADDR_LEN];
/** Saved timeout value */
unsigned long timeout;
/** Configuration command interface */
struct interface config;
/** Device is configued */
int configured;
/** ACPI descriptor */
struct acpi_descriptor desc;
};
/** AoE boot firmware table signature */
#define ABFT_SIG ACPI_SIGNATURE ( 'a', 'B', 'F', 'T' )

2
src/include/ipxe/efi/efi_path.h
View File

@@ -15,6 +15,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
struct net_device;
struct uri;
struct aoe_device;
struct usb_function;
extern EFI_DEVICE_PATH_PROTOCOL *
@@ -24,6 +25,7 @@ extern EFI_DEVICE_PATH_PROTOCOL * efi_paths ( EFI_DEVICE_PATH_PROTOCOL *first,
... );
extern EFI_DEVICE_PATH_PROTOCOL * efi_netdev_path ( struct net_device *netdev );
extern EFI_DEVICE_PATH_PROTOCOL * efi_uri_path ( struct uri *uri );
extern EFI_DEVICE_PATH_PROTOCOL * efi_aoe_path ( struct aoe_device *aoedev );
extern EFI_DEVICE_PATH_PROTOCOL * efi_usb_path ( struct usb_function *func );
extern EFI_DEVICE_PATH_PROTOCOL * efi_describe ( struct interface *interface );