/*
* Function name: twa_ioctl
* Description: Called when an ioctl is posted to the controller.
* Handles any OS Layer specific cmds, passes the rest
* on to the Common Layer.
*
* Input: dev -- control device corresponding to the ctlr
* cmd -- ioctl cmd
* buf -- ptr to buffer in kernel memory, which is
* a copy of the input buffer in user-space
* flags -- mode of corresponding open
* proc -- current process
* Output: buf -- ptr to buffer in kernel memory, which will
* be copied to the output buffer in user-space
* Return value: 0 -- success
* non-zero-- failure
*/
static TW_INT32
twa_ioctl(struct cdev *dev, u_long cmd, caddr_t buf, TW_INT32 flags, struct thread *proc)
{
struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1);
TW_INT32 error;
tw_osli_dbg_dprintf(5, sc, "entered");
switch (cmd) {
case TW_OSL_IOCTL_FIRMWARE_PASS_THROUGH:
tw_osli_dbg_dprintf(6, sc, "ioctl: fw_passthru");
error = tw_osli_fw_passthru(sc, (TW_INT8 *)buf);
break;
case TW_OSL_IOCTL_SCAN_BUS:
/* Request CAM for a bus scan. */
tw_osli_dbg_dprintf(6, sc, "ioctl: scan bus");
error = tw_osli_request_bus_scan(sc);
break;
default:
tw_osli_dbg_dprintf(6, sc, "ioctl: 0x%lx", cmd);
error = tw_cl_ioctl(&sc->ctlr_handle, cmd, buf);
break;
}
return(error);
}
/*
* Function name: tw_osl_scan_bus
* Description: CL calls this function to request for a bus scan.
*
* Input: ctlr_handle -- ptr to controller handle
* Output: None
* Return value: None
*/
TW_VOID
tw_osl_scan_bus(struct tw_cl_ctlr_handle *ctlr_handle)
{
struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt;
TW_INT32 error;
if ((error = tw_osli_request_bus_scan(sc)))
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2109,
"Bus scan request to CAM failed",
error);
}
/*
* Function name: tw_osli_cam_attach
* Description: Attaches the driver to CAM.
*
* Input: sc -- ptr to OSL internal ctlr context
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
TW_INT32
tw_osli_cam_attach(struct twa_softc *sc)
{
struct cam_devq *devq;
TW_INT32 error;
tw_osli_dbg_dprintf(3, sc, "entered");
/*
* Create the device queue for our SIM.
*/
if ((devq = cam_simq_alloc(TW_OSLI_MAX_NUM_IOS)) == NULL) {
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2100,
"Failed to create SIM device queue",
ENOMEM);
return(ENOMEM);
}
/*
* Create a SIM entry. Though we can support TW_OSLI_MAX_NUM_REQUESTS
* simultaneous requests, we claim to be able to handle only
* TW_OSLI_MAX_NUM_IOS (two less), so that we always have a request
* packet available to service ioctls and AENs.
*/
tw_osli_dbg_dprintf(3, sc, "Calling cam_sim_alloc");
sc->sim = cam_sim_alloc(twa_action, twa_poll, "twa", sc,
device_get_unit(sc->bus_dev), sc->sim_lock,
TW_OSLI_MAX_NUM_IOS, 1, devq);
cam_simq_release(devq);
if (sc->sim == NULL) {
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2101,
"Failed to create a SIM entry",
ENOMEM);
return(ENOMEM);
}
/*
* Register the bus.
*/
tw_osli_dbg_dprintf(3, sc, "Calling xpt_bus_register");
lockmgr(sc->sim_lock, LK_EXCLUSIVE);
if (xpt_bus_register(sc->sim, 0) != CAM_SUCCESS) {
cam_sim_free(sc->sim);
sc->sim = NULL; /* so cam_detach will not try to free it */
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2102,
"Failed to register the bus",
ENXIO);
lockmgr(sc->sim_lock, LK_RELEASE);
return(ENXIO);
}
tw_osli_dbg_dprintf(3, sc, "Calling xpt_create_path");
if (xpt_create_path(&sc->path, NULL,
cam_sim_path(sc->sim),
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path (sc->sim));
cam_sim_free(sc->sim);
sc->sim = NULL; /* so cam_detach will not try to free it */
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2103,
"Failed to create path",
ENXIO);
lockmgr(sc->sim_lock, LK_RELEASE);
return(ENXIO);
}
lockmgr(sc->sim_lock, LK_RELEASE);
tw_osli_dbg_dprintf(3, sc, "Calling tw_osli_request_bus_scan");
/*
* Request a bus scan, so that CAM gets to know of
* the logical units that we control.
*/
if ((error = tw_osli_request_bus_scan(sc)))
tw_osli_printf(sc, "error = %d",
TW_CL_SEVERITY_ERROR_STRING,
TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
0x2104,
"Bus scan request to CAM failed",
error);
tw_osli_dbg_dprintf(3, sc, "exiting");
return(0);
}