d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Remove the NVME_IDENTIFY_CONTROLLER and NVME_IDENTIFY_NAMESPACE IOCTLs and replace

Browse Source 
them with the NVMe passthrough equivalent.

Sponsored by:	Intel
This commit is contained in:
Jim Harris 2013-04-12 17:56:47 +00:00
parent 7c3f19d7bb
commit 5076698e19
4 changed files with 91 additions and 84 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

120
sbin/nvmecontrol/nvmecontrol.c
View File

@ -210,6 +210,53 @@ ns_get_sector_size(struct nvme_namespace_data *nsdata)
return (1 << nsdata->lbaf[0].lbads);
}
static void
read_controller_data(int fd, struct nvme_controller_data *cdata)
{
struct nvme_pt_command pt;
memset(&pt, 0, sizeof(pt));
pt.cmd.opc = NVME_OPC_IDENTIFY;
pt.cmd.cdw10 = 1;
pt.buf = cdata;
pt.len = sizeof(*cdata);
pt.is_read = 1;
if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) {
printf("Identify request failed. errno=%d (%s)\n",
errno, strerror(errno));
exit(EX_IOERR);
}
if (nvme_completion_is_error(&pt.cpl)) {
printf("Passthrough command returned error.\n");
exit(EX_IOERR);
}
}
static void
read_namespace_data(int fd, int nsid, struct nvme_namespace_data *nsdata)
{
struct nvme_pt_command pt;
memset(&pt, 0, sizeof(pt));
pt.cmd.opc = NVME_OPC_IDENTIFY;
pt.cmd.nsid = nsid;
pt.buf = nsdata;
pt.len = sizeof(*nsdata);
pt.is_read = 1;
if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) {
printf("Identify request failed. errno=%d (%s)\n",
errno, strerror(errno));
exit(EX_IOERR);
}
if (nvme_completion_is_error(&pt.cpl)) {
printf("Passthrough command returned error.\n");
exit(EX_IOERR);
}
}
static void
devlist(int argc, char *argv[])
@ -251,33 +298,12 @@ devlist(int argc, char *argv[])
continue;
}
if (ioctl(fd, NVME_IDENTIFY_CONTROLLER, &cdata) < 0) {
printf("Identify request to %s failed. errno=%d (%s)\n",
path, errno, strerror(errno));
exit_code = EX_IOERR;
continue;
}
read_controller_data(fd, &cdata);
printf("%6s: %s\n", name, cdata.mn);
for (i = 0; i < cdata.nn; i++) {
sprintf(name, "nvme%dns%d", ctrlr, i+1);
sprintf(path, "/dev/%s", name);
fd = open(path, O_RDWR);
if (fd < 0) {
printf("Could not open %s. errno=%d (%s)\n",
path, errno, strerror(errno));
exit_code = EX_NOPERM;
continue;
}
if (ioctl(fd, NVME_IDENTIFY_NAMESPACE, &nsdata) < 0) {
printf("Identify request to %s failed. "
"errno=%d (%s)\n", path, errno,
strerror(errno));
exit_code = EX_IOERR;
continue;
}
read_namespace_data(fd, i+1, &nsdata);
printf(" %10s (%lldGB)\n",
name,
nsdata.nsze *
@ -329,11 +355,7 @@ identify_ctrlr(int argc, char *argv[])
exit(EX_NOPERM);
}
if (ioctl(fd, NVME_IDENTIFY_CONTROLLER, &cdata) < 0) {
printf("Identify request to %s failed. errno=%d (%s)\n", path,
errno, strerror(errno));
exit(EX_IOERR);
}
read_controller_data(fd, &cdata);
if (hexflag == 1) {
if (verboseflag == 1)
@ -360,7 +382,8 @@ identify_ns(int argc, char *argv[])
struct nvme_namespace_data nsdata;
struct stat devstat;
char path[64];
int ch, fd, hexflag = 0, hexlength;
char *nsloc;
int ch, fd, hexflag = 0, hexlength, nsid;
int verboseflag = 0;
while ((ch = getopt(argc, argv, "vx")) != -1) {
@ -376,8 +399,41 @@ identify_ns(int argc, char *argv[])
}
}
/*
* Check if the specified device node exists before continuing.
* This is a cleaner check for cases where the correct controller
* is specified, but an invalid namespace on that controller.
*/
sprintf(path, "/dev/%s", argv[optind]);
if (stat(path, &devstat) < 0) {
printf("Invalid device node %s. errno=%d (%s)\n", path, errno,
strerror(errno));
exit(EX_IOERR);
}
nsloc = strstr(argv[optind], "ns");
if (nsloc == NULL) {
printf("Invalid namepsace %s.\n", argv[optind]);
exit(EX_IOERR);
}
/*
* Pull the namespace id from the string. +2 skips past the "ns" part
* of the string.
*/
nsid = strtol(nsloc + 2, NULL, 10);
if (nsid == 0 && errno != 0) {
printf("Invalid namespace ID %s.\n", argv[optind]);
exit(EX_IOERR);
}
/*
* We send IDENTIFY commands to the controller, not the namespace,
* since it is an admin cmd. So the path should only include the
* nvmeX part of the nvmeXnsY string.
*/
sprintf(path, "/dev/");
strncat(path, argv[optind], nsloc - argv[optind]);
if (stat(path, &devstat) < 0) {
printf("Invalid device node %s. errno=%d (%s)\n", path, errno,
strerror(errno));
@ -391,11 +447,7 @@ identify_ns(int argc, char *argv[])
exit(EX_NOPERM);
}
if (ioctl(fd, NVME_IDENTIFY_NAMESPACE, &nsdata) < 0) {
printf("Identify request to %s failed. errno=%d (%s)\n", path,
errno, strerror(errno));
exit(EX_IOERR);
}
read_namespace_data(fd, nsid, &nsdata);
if (hexflag == 1) {
if (verboseflag == 1)

11
sys/dev/nvme/nvme.h
View File

@ -33,12 +33,11 @@
#include <sys/types.h>
#endif
#define NVME_IDENTIFY_CONTROLLER _IOR('n', 0, struct nvme_controller_data)
#define NVME_IDENTIFY_NAMESPACE _IOR('n', 1, struct nvme_namespace_data)
#define NVME_IO_TEST _IOWR('n', 2, struct nvme_io_test)
#define NVME_BIO_TEST _IOWR('n', 4, struct nvme_io_test)
#define NVME_RESET_CONTROLLER _IO('n', 5)
#define NVME_PASSTHROUGH_CMD _IOWR('n', 6, struct nvme_pt_command)
#define NVME_PASSTHROUGH_CMD _IOWR('n', 0, struct nvme_pt_command)
#define NVME_RESET_CONTROLLER _IO('n', 1)
#define NVME_IO_TEST _IOWR('n', 100, struct nvme_io_test)
#define NVME_BIO_TEST _IOWR('n', 101, struct nvme_io_test)
/*
* Use to mark a command to apply to all namespaces, or to retrieve global

22
sys/dev/nvme/nvme_ctrlr.c
View File

@ -976,34 +976,12 @@ static int
nvme_ctrlr_ioctl(struct cdev *cdev, u_long cmd, caddr_t arg, int flag,
struct thread *td)
{
struct nvme_completion_poll_status status;
struct nvme_controller *ctrlr;
struct nvme_pt_command *pt;
ctrlr = cdev->si_drv1;
switch (cmd) {
case NVME_IDENTIFY_CONTROLLER:
#ifdef CHATHAM2
/*
* Don't refresh data on Chatham, since Chatham returns
* garbage on IDENTIFY anyways.
*/
if (pci_get_devid(ctrlr->dev) == CHATHAM_PCI_ID) {
memcpy(arg, &ctrlr->cdata, sizeof(ctrlr->cdata));
break;
}
#endif
/* Refresh data before returning to user. */
status.done = FALSE;
nvme_ctrlr_cmd_identify_controller(ctrlr, &ctrlr->cdata,
nvme_completion_poll_cb, &status);
while (status.done == FALSE)
DELAY(5);
if (nvme_completion_is_error(&status.cpl))
return (ENXIO);
memcpy(arg, &ctrlr->cdata, sizeof(ctrlr->cdata));
break;
case NVME_RESET_CONTROLLER:
nvme_ctrlr_reset(ctrlr);
break;

22
sys/dev/nvme/nvme_ns.c
View File

@ -45,7 +45,6 @@ static int
nvme_ns_ioctl(struct cdev *cdev, u_long cmd, caddr_t arg, int flag,
struct thread *td)
{
struct nvme_completion_poll_status status;
struct nvme_namespace *ns;
struct nvme_controller *ctrlr;
struct nvme_pt_command *pt;
@ -54,27 +53,6 @@ nvme_ns_ioctl(struct cdev *cdev, u_long cmd, caddr_t arg, int flag,
ctrlr = ns->ctrlr;
switch (cmd) {
case NVME_IDENTIFY_NAMESPACE:
#ifdef CHATHAM2
/*
* Don't refresh data on Chatham, since Chatham returns
* garbage on IDENTIFY anyways.
*/
if (pci_get_devid(ctrlr->dev) == CHATHAM_PCI_ID) {
memcpy(arg, &ns->data, sizeof(ns->data));
break;
}
#endif
/* Refresh data before returning to user. */
status.done = FALSE;
nvme_ctrlr_cmd_identify_namespace(ctrlr, ns->id, &ns->data,
nvme_completion_poll_cb, &status);
while (status.done == FALSE)
DELAY(5);
if (nvme_completion_is_error(&status.cpl))
return (ENXIO);
memcpy(arg, &ns->data, sizeof(ns->data));
break;
case NVME_IO_TEST:
case NVME_BIO_TEST:
nvme_ns_test(ns, cmd, arg);