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For IDENTIFY passthrough commands to Chatham prototype controllers, copy

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the spoofed identify data into the user buffer rather than issuing the
command to the controller, since Chatham IDENTIFY data is always spoofed.

While here, fix a bug in the spoofed data for Chatham submission and
completion queue entry sizes.

Sponsored by:	Intel
MFC after:	3 days
This commit is contained in:
Jim Harris 2014-01-06 23:51:26 +00:00
parent efa2980530
commit 448cffc859
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=260382
1 changed files with 23 additions and 2 deletions
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25
sys/dev/nvme/nvme_ctrlr.c
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@ -181,8 +181,8 @@ nvme_chatham_populate_cdata(struct nvme_controller *ctrlr)
cdata->lpa.ns_smart = 1;
cdata->sqes.min = 6;
cdata->sqes.max = 6;
cdata->sqes.min = 4;
cdata->sqes.max = 4;
cdata->cqes.min = 4;
cdata->cqes.max = 4;
cdata->nn = 1;
/* Chatham2 doesn't support DSM command */
@ -1041,6 +1041,27 @@ nvme_ctrlr_ioctl(struct cdev *cdev, u_long cmd, caddr_t arg, int flag,
break;
case NVME_PASSTHROUGH_CMD:
pt = (struct nvme_pt_command *)arg;
#ifdef CHATHAM2
/*
* Chatham IDENTIFY data is spoofed, so copy the spoofed data
* rather than issuing the command to the Chatham controller.
*/
if (pci_get_devid(ctrlr->dev) == CHATHAM_PCI_ID &&
pt->cmd.opc == NVME_OPC_IDENTIFY) {
if (pt->cmd.cdw10 == 1) {
if (pt->len != sizeof(ctrlr->cdata))
return (EINVAL);
return (copyout(&ctrlr->cdata, pt->buf,
pt->len));
} else {
if (pt->len != sizeof(ctrlr->ns[0].data) ||
pt->cmd.nsid != 1)
return (EINVAL);
return (copyout(&ctrlr->ns[0].data, pt->buf,
pt->len));
}
}
#endif
return (nvme_ctrlr_passthrough_cmd(ctrlr, pt, pt->cmd.nsid,
1 /* is_user_buffer */, 1 /* is_admin_cmd */));
default: