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hw/nvme: Add support for Secondary Controller List

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Introduce handling for Secondary Controller List (Identify command with
CNS value of 15h).

Secondary controller ids are unique in the subsystem, hence they are
reserved by it upon initialization of the primary controller to the
number of sriov_max_vfs.

ID reservation requires the addition of an intermediate controller slot
state, so the reserved controller has the address 0xFFFF.
A secondary controller is in the reserved state when it has no virtual
function assigned, but its primary controller is realized.
Secondary controller reservations are released to NULL when its primary
controller is unregistered.

Signed-off-by: Lukasz Maniak <lukasz.maniak@linux.intel.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Lukasz Maniak 2022-05-09 16:16:11 +02:00 • committed by Klaus Jensen
parent 5e6f963f01
commit 99f48ae7ae
6 changed files with 141 additions and 10 deletions
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20
include/block/nvme.h
View file

@ -1034,6 +1034,7 @@ enum NvmeIdCns {
NVME_ID_CNS_NS_ATTACHED_CTRL_LIST = 0x12,
NVME_ID_CNS_CTRL_LIST = 0x13,
NVME_ID_CNS_PRIMARY_CTRL_CAP = 0x14,
NVME_ID_CNS_SECONDARY_CTRL_LIST = 0x15,
NVME_ID_CNS_CS_NS_PRESENT_LIST = 0x1a,
NVME_ID_CNS_CS_NS_PRESENT = 0x1b,
NVME_ID_CNS_IO_COMMAND_SET = 0x1c,
@ -1575,6 +1576,23 @@ typedef struct QEMU_PACKED NvmePriCtrlCap {
uint8_t rsvd80[4016];
} NvmePriCtrlCap;
typedef struct QEMU_PACKED NvmeSecCtrlEntry {
uint16_t scid;
uint16_t pcid;
uint8_t scs;
uint8_t rsvd5[3];
uint16_t vfn;
uint16_t nvq;
uint16_t nvi;
uint8_t rsvd14[18];
} NvmeSecCtrlEntry;
typedef struct QEMU_PACKED NvmeSecCtrlList {
uint8_t numcntl;
uint8_t rsvd1[31];
NvmeSecCtrlEntry sec[127];
} NvmeSecCtrlList;
static inline void _nvme_check_size(void)
{
QEMU_BUILD_BUG_ON(sizeof(NvmeBar) != 4096);
@ -1611,5 +1629,7 @@ static inline void _nvme_check_size(void)
QEMU_BUILD_BUG_ON(sizeof(NvmeZoneDescr) != 64);
QEMU_BUILD_BUG_ON(sizeof(NvmeDifTuple) != 16);
QEMU_BUILD_BUG_ON(sizeof(NvmePriCtrlCap) != 4096);
QEMU_BUILD_BUG_ON(sizeof(NvmeSecCtrlEntry) != 32);
QEMU_BUILD_BUG_ON(sizeof(NvmeSecCtrlList) != 4096);
}
#endif