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vdpa/octeon_ep: Use 4 bytes for mailbox signature

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The upper 4 bytes are reserved by the firmware for
storing meta data. Use only lower 4 bytes to update
the signature details.

Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260224095226.1001151-3-schalla@marvell.com>
This commit is contained in:
Vamsi Attunuru 2026-02-24 15:22:24 +05:30 committed by Michael S. Tsirkin
parent 74dc530f4c
commit d42eadf796
1 changed files with 3 additions and 3 deletions
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6
drivers/vdpa/octeon_ep/octep_vdpa_main.c
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@ -573,10 +573,10 @@ static const struct vdpa_mgmtdev_ops octep_vdpa_mgmt_dev_ops = {
static bool get_device_ready_status(u8 __iomem *addr)
{
u64 signature = readq(addr + OCTEP_VF_MBOX_DATA(0));
u32 signature = readl(addr + OCTEP_VF_MBOX_DATA(0));
if (signature == OCTEP_DEV_READY_SIGNATURE) {
writeq(0, addr + OCTEP_VF_MBOX_DATA(0));
writel(0, addr + OCTEP_VF_MBOX_DATA(0));
return true;
}
@ -748,7 +748,7 @@ static int octep_sriov_enable(struct pci_dev *pdev, int num_vfs)
rpvf = FIELD_GET(GENMASK_ULL(35, 32), val);
if (done) {
for (i = 0; i < pf->enabled_vfs; i++)
writeq(OCTEP_DEV_READY_SIGNATURE, addr + OCTEP_PF_MBOX_DATA(i * rpvf));
writel(OCTEP_DEV_READY_SIGNATURE, addr + OCTEP_PF_MBOX_DATA(i * rpvf));
}
return num_vfs;