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enic: driver/firmware API updates 

Add driver/firmware compatibility check.
Update firmware notify cmd to honor notify area size.
Add new version of init cmd.
Add link_down_cnt to notify area to track link down count.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Scott Feldman 2008-11-21 21:28:18 -08:00 committed by David S. Miller
parent 86ca9db794
commit 27372bf5fa
2 changed files with 60 additions and 19 deletions
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60
drivers/net/enic/vnic_dev.c
View File

@ -43,6 +43,7 @@ struct vnic_dev {
struct vnic_devcmd_notify *notify;
struct vnic_devcmd_notify notify_copy;
dma_addr_t notify_pa;
u32 notify_sz;
u32 *linkstatus;
dma_addr_t linkstatus_pa;
struct vnic_stats *stats;
@ -235,14 +236,6 @@ int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
int delay;
u32 status;
int dev_cmd_err[] = {
/* convert from fw's version of error.h to host's version */
0, /* ERR_SUCCESS */
EINVAL, /* ERR_EINVAL */
EFAULT, /* ERR_EFAULT */
EPERM, /* ERR_EPERM */
EBUSY, /* ERR_EBUSY */
};
int err;
status = ioread32(&devcmd->status);
@ -270,10 +263,12 @@ int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
if (!(status & STAT_BUSY)) {
if (status & STAT_ERROR) {
err = dev_cmd_err[(int)readq(&devcmd->args[0])];
printk(KERN_ERR "Error %d devcmd %d\n",
err, _CMD_N(cmd));
return -err;
err = (int)readq(&devcmd->args[0]);
if (err != ERR_ECMDUNKNOWN ||
cmd != CMD_CAPABILITY)
printk(KERN_ERR "Error %d devcmd %d\n",
err, _CMD_N(cmd));
return err;
}
if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
@ -290,6 +285,17 @@ int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
return -ETIMEDOUT;
}
int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
{
u64 a0 = (u32)cmd, a1 = 0;
int wait = 1000;
int err;
err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
return !(err || a0);
}
int vnic_dev_fw_info(struct vnic_dev *vdev,
struct vnic_devcmd_fw_info **fw_info)
{
@ -511,6 +517,7 @@ int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
{
u64 a0, a1;
int wait = 1000;
int r;
if (!vdev->notify) {
vdev->notify = pci_alloc_consistent(vdev->pdev,
@ -518,13 +525,16 @@ int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
&vdev->notify_pa);
if (!vdev->notify)
return -ENOMEM;
memset(vdev->notify, 0, sizeof(struct vnic_devcmd_notify));
}
a0 = vdev->notify_pa;
a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
a1 += sizeof(struct vnic_devcmd_notify);
return vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
return r;
}
void vnic_dev_notify_unset(struct vnic_dev *vdev)
@ -537,22 +547,22 @@ void vnic_dev_notify_unset(struct vnic_dev *vdev)
a1 += sizeof(struct vnic_devcmd_notify);
vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
vdev->notify_sz = 0;
}
static int vnic_dev_notify_ready(struct vnic_dev *vdev)
{
u32 *words;
unsigned int nwords = sizeof(struct vnic_devcmd_notify) / 4;
unsigned int nwords = vdev->notify_sz / 4;
unsigned int i;
u32 csum;
if (!vdev->notify)
if (!vdev->notify || !vdev->notify_sz)
return 0;
do {
csum = 0;
memcpy(&vdev->notify_copy, vdev->notify,
sizeof(struct vnic_devcmd_notify));
memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
words = (u32 *)&vdev->notify_copy;
for (i = 1; i < nwords; i++)
csum += words[i];
@ -565,7 +575,20 @@ int vnic_dev_init(struct vnic_dev *vdev, int arg)
{
u64 a0 = (u32)arg, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
int r = 0;
if (vnic_dev_capable(vdev, CMD_INIT))
r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
else {
vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
if (a0 & CMD_INITF_DEFAULT_MAC) {
// Emulate these for old CMD_INIT_v1 which
// didn't pass a0 so no CMD_INITF_*.
vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
}
}
return r;
}
int vnic_dev_link_status(struct vnic_dev *vdev)
@ -666,3 +689,4 @@ err_out:
return NULL;
}

19
drivers/net/enic/vnic_devcmd.h
View File

@ -168,7 +168,8 @@ enum vnic_devcmd_cmd {
CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
/* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
CMD_INIT = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
/***** Replaced by CMD_INIT *****/
CMD_INIT_v1 = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
/* variant of CMD_INIT, with provisioning info
* (u64)a0=paddr of vnic_devcmd_provinfo
@ -198,6 +199,14 @@ enum vnic_devcmd_cmd {
/* undo initialize of virtual link */
CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
/* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
CMD_INIT = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 35),
/* check fw capability of a cmd:
* in: (u32)a0=cmd
* out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
CMD_CAPABILITY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),
};
/* flags for CMD_OPEN */
@ -249,8 +258,16 @@ struct vnic_devcmd_notify {
u32 uif; /* uplink interface */
u32 status; /* status bits (see VNIC_STF_*) */
u32 error; /* error code (see ERR_*) for first ERR */
u32 link_down_cnt; /* running count of link down transitions */
};
#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */
#define VNIC_STF_STD_PAUSE 0x0002 /* standard link-level pause on */
#define VNIC_STF_PFC_PAUSE 0x0004 /* priority flow control pause on */
/* all supported status flags */
#define VNIC_STF_ALL (VNIC_STF_FATAL_ERR |\
VNIC_STF_STD_PAUSE |\
VNIC_STF_PFC_PAUSE |\
0)
struct vnic_devcmd_provinfo {
u8 oui[3];