/*
* Bus independant device detachment routine. Makes sure all
* allocated resources are freed, callouts disabled and waiting
* processes unblocked.
*/
int
cmx_detach(device_t dev)
{
struct cmx_softc *sc = device_get_softc(dev);
DEBUG_printf(dev, "called\n");
sc->dying = 1;
CMX_LOCK(sc);
if (sc->polling) {
DEBUG_printf(sc->dev, "disabling polling\n");
callout_stop(&sc->ch);
sc->polling = 0;
CMX_UNLOCK(sc);
KNOTE(&sc->kq.ki_note, 0);
} else {
CMX_UNLOCK(sc);
}
wakeup(sc);
DEBUG_printf(dev, "releasing resources\n");
cmx_release_resources(dev);
dev_ops_remove_minor(&cmx_ops, device_get_unit(dev));
return 0;
}
static int
urio_detach(device_t self)
{
DPRINTF(("%s: disconnected\n", device_get_nameunit(self)));
dev_ops_remove_minor(&urio_ops, /*-1, */device_get_unit(self));
/* XXX not implemented yet */
device_set_desc(self, NULL);
return 0;
}
void
mps_detach_user(struct mps_softc *sc)
{
/* XXX: do a purge of pending requests? */
destroy_dev(sc->mps_cdev);
dev_ops_remove_minor(&mps_ops, device_get_unit(sc->mps_dev));
}
static void
ptdtor(struct cam_periph *periph)
{
struct pt_softc *softc;
softc = (struct pt_softc *)periph->softc;
devstat_remove_entry(&softc->device_stats);
cam_extend_release(ptperiphs, periph->unit_number);
xpt_print(periph->path, "removing device entry\n");
dev_ops_remove_minor(&pt_ops, periph->unit_number);
kfree(softc, M_DEVBUF);
}
/*
* Function name: tw_osli_free_resources
* Description: Performs clean-up at the time of going down.
*
* Input: sc -- ptr to OSL internal ctlr context
* Output: None
* Return value: None
*/
static TW_VOID
tw_osli_free_resources(struct twa_softc *sc)
{
struct tw_osli_req_context *req;
TW_INT32 error = 0;
tw_osli_dbg_dprintf(3, sc, "entered");
/* Detach from CAM */
tw_osli_cam_detach(sc);
if (sc->req_ctx_buf)
while ((req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q)) !=
NULL) {
lockuninit(req->ioctl_wake_timeout_lock);
if ((error = bus_dmamap_destroy(sc->dma_tag,
req->dma_map)))
tw_osli_dbg_dprintf(1, sc,
"dmamap_destroy(dma) returned %d",
error);
}
if ((sc->ioctl_tag) && (sc->ioctl_map))
if ((error = bus_dmamap_destroy(sc->ioctl_tag, sc->ioctl_map)))
tw_osli_dbg_dprintf(1, sc,
"dmamap_destroy(ioctl) returned %d", error);
/* Free all memory allocated so far. */
if (sc->req_ctx_buf)
kfree(sc->req_ctx_buf, TW_OSLI_MALLOC_CLASS);
if (sc->non_dma_mem)
kfree(sc->non_dma_mem, TW_OSLI_MALLOC_CLASS);
if (sc->dma_mem) {
bus_dmamap_unload(sc->cmd_tag, sc->cmd_map);
bus_dmamem_free(sc->cmd_tag, sc->dma_mem,
sc->cmd_map);
}
if (sc->cmd_tag)
if ((error = bus_dma_tag_destroy(sc->cmd_tag)))
tw_osli_dbg_dprintf(1, sc,
"dma_tag_destroy(cmd) returned %d", error);
if (sc->dma_tag)
if ((error = bus_dma_tag_destroy(sc->dma_tag)))
tw_osli_dbg_dprintf(1, sc,
"dma_tag_destroy(dma) returned %d", error);
if (sc->ioctl_tag)
if ((error = bus_dma_tag_destroy(sc->ioctl_tag)))
tw_osli_dbg_dprintf(1, sc,
"dma_tag_destroy(ioctl) returned %d", error);
if (sc->parent_tag)
if ((error = bus_dma_tag_destroy(sc->parent_tag)))
tw_osli_dbg_dprintf(1, sc,
"dma_tag_destroy(parent) returned %d", error);
/* Disconnect the interrupt handler. */
if ((error = twa_teardown_intr(sc)))
tw_osli_dbg_dprintf(1, sc,
"teardown_intr returned %d", error);
if (sc->irq_res != NULL)
if ((error = bus_release_resource(sc->bus_dev,
SYS_RES_IRQ, sc->irq_res_id, sc->irq_res)))
tw_osli_dbg_dprintf(1, sc,
"release_resource(irq) returned %d", error);
if (sc->irq_type == PCI_INTR_TYPE_MSI)
pci_release_msi(sc->bus_dev);
/* Release the register window mapping. */
if (sc->reg_res != NULL)
if ((error = bus_release_resource(sc->bus_dev,
SYS_RES_MEMORY, sc->reg_res_id, sc->reg_res)))
tw_osli_dbg_dprintf(1, sc,
"release_resource(io) returned %d", error);
/* Destroy the control device. */
if (sc->ctrl_dev != NULL)
destroy_dev(sc->ctrl_dev);
dev_ops_remove_minor(&twa_ops, device_get_unit(sc->bus_dev));
}
static int
tws_detach(device_t dev)
{
struct tws_softc *sc = device_get_softc(dev);
int error, i;
u_int32_t reg;
TWS_TRACE_DEBUG(sc, "entry", 0, 0);
lockmgr(&sc->gen_lock, LK_EXCLUSIVE);
tws_send_event(sc, TWS_UNINIT_START);
lockmgr(&sc->gen_lock, LK_RELEASE);
/* needs to disable interrupt before detaching from cam */
tws_turn_off_interrupts(sc);
/* clear door bell */
tws_write_reg(sc, TWS_I2O0_HOBDBC, ~0, 4);
reg = tws_read_reg(sc, TWS_I2O0_HIMASK, 4);
TWS_TRACE_DEBUG(sc, "turn-off-intr", reg, 0);
sc->obfl_q_overrun = false;
tws_init_connect(sc, 1);
/* Teardown the state in our softc created in our attach routine. */
/* Disconnect the interrupt handler. */
for(i=0;i<sc->irqs;i++) {
if (sc->intr_handle[i]) {
if ((error = bus_teardown_intr(sc->tws_dev,
sc->irq_res[i], sc->intr_handle[i])))
TWS_TRACE(sc, "bus teardown intr", 0, error);
}
}
/* Release irq resource */
for(i=0;i<sc->irqs;i++) {
if ( sc->irq_res[i] ){
if (bus_release_resource(sc->tws_dev,
SYS_RES_IRQ, sc->irq_res_id[i], sc->irq_res[i]))
TWS_TRACE(sc, "bus release irq resource",
i, sc->irq_res_id[i]);
}
}
if ( sc->intr_type == TWS_MSI ) {
pci_release_msi(sc->tws_dev);
}
tws_cam_detach(sc);
/* Release memory resource */
if ( sc->mfa_res ){
if (bus_release_resource(sc->tws_dev,
SYS_RES_MEMORY, sc->mfa_res_id, sc->mfa_res))
TWS_TRACE(sc, "bus release mem resource", 0, sc->mfa_res_id);
}
if ( sc->reg_res ){
if (bus_release_resource(sc->tws_dev,
SYS_RES_MEMORY, sc->reg_res_id, sc->reg_res))
TWS_TRACE(sc, "bus release mem resource", 0, sc->reg_res_id);
}
kfree(sc->reqs, M_TWS);
kfree(sc->sense_bufs, M_TWS);
kfree(sc->scan_ccb, M_TWS);
kfree(sc->aen_q.q, M_TWS);
kfree(sc->trace_q.q, M_TWS);
lockuninit(&sc->q_lock);
lockuninit(&sc->sim_lock);
lockuninit(&sc->gen_lock);
lockuninit(&sc->io_lock);
destroy_dev(sc->tws_cdev);
dev_ops_remove_minor(&tws_ops, device_get_unit(sc->tws_dev));
sysctl_ctx_free(&sc->tws_clist);
return (0);
}
static int
tws_attach(device_t dev)
{
struct tws_softc *sc = device_get_softc(dev);
u_int32_t cmd, bar;
int error=0,i;
/* no tracing yet */
/* Look up our softc and initialize its fields. */
sc->tws_dev = dev;
sc->device_id = pci_get_device(dev);
sc->subvendor_id = pci_get_subvendor(dev);
sc->subdevice_id = pci_get_subdevice(dev);
/* Intialize mutexes */
lockinit(&sc->q_lock, "tws_q_lock", 0, LK_CANRECURSE);
lockinit(&sc->sim_lock, "tws_sim_lock", 0, LK_CANRECURSE);
lockinit(&sc->gen_lock, "tws_gen_lock", 0, LK_CANRECURSE);
lockinit(&sc->io_lock, "tws_io_lock", 0, LK_CANRECURSE);
if ( tws_init_trace_q(sc) == FAILURE )
kprintf("trace init failure\n");
/* send init event */
lockmgr(&sc->gen_lock, LK_EXCLUSIVE);
tws_send_event(sc, TWS_INIT_START);
lockmgr(&sc->gen_lock, LK_RELEASE);
#if _BYTE_ORDER == _BIG_ENDIAN
TWS_TRACE(sc, "BIG endian", 0, 0);
#endif
/* sysctl context setup */
sysctl_ctx_init(&sc->tws_clist);
sc->tws_oidp = SYSCTL_ADD_NODE(&sc->tws_clist,
SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
device_get_nameunit(dev),
CTLFLAG_RD, 0, "");
if ( sc->tws_oidp == NULL ) {
tws_log(sc, SYSCTL_TREE_NODE_ADD);
goto attach_fail_1;
}
SYSCTL_ADD_STRING(&sc->tws_clist, SYSCTL_CHILDREN(sc->tws_oidp),
OID_AUTO, "driver_version", CTLFLAG_RD,
TWS_DRIVER_VERSION_STRING, 0, "TWS driver version");
cmd = pci_read_config(dev, PCIR_COMMAND, 2);
if ( (cmd & PCIM_CMD_PORTEN) == 0) {
tws_log(sc, PCI_COMMAND_READ);
goto attach_fail_1;
}
/* Force the busmaster enable bit on. */
cmd |= PCIM_CMD_BUSMASTEREN;
pci_write_config(dev, PCIR_COMMAND, cmd, 2);
bar = pci_read_config(dev, TWS_PCI_BAR0, 4);
TWS_TRACE_DEBUG(sc, "bar0 ", bar, 0);
bar = pci_read_config(dev, TWS_PCI_BAR1, 4);
bar = bar & ~TWS_BIT2;
TWS_TRACE_DEBUG(sc, "bar1 ", bar, 0);
/* MFA base address is BAR2 register used for
* push mode. Firmware will evatualy move to
* pull mode during witch this needs to change
*/
#ifndef TWS_PULL_MODE_ENABLE
sc->mfa_base = (u_int64_t)pci_read_config(dev, TWS_PCI_BAR2, 4);
sc->mfa_base = sc->mfa_base & ~TWS_BIT2;
TWS_TRACE_DEBUG(sc, "bar2 ", sc->mfa_base, 0);
#endif
/* allocate MMIO register space */
sc->reg_res_id = TWS_PCI_BAR1; /* BAR1 offset */
if ((sc->reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
&(sc->reg_res_id), 0, ~0, 1, RF_ACTIVE))
== NULL) {
tws_log(sc, ALLOC_MEMORY_RES);
goto attach_fail_1;
}
sc->bus_tag = rman_get_bustag(sc->reg_res);
sc->bus_handle = rman_get_bushandle(sc->reg_res);
#ifndef TWS_PULL_MODE_ENABLE
/* Allocate bus space for inbound mfa */
sc->mfa_res_id = TWS_PCI_BAR2; /* BAR2 offset */
if ((sc->mfa_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
&(sc->mfa_res_id), 0, ~0, 0x100000, RF_ACTIVE))
== NULL) {
tws_log(sc, ALLOC_MEMORY_RES);
goto attach_fail_2;
}
sc->bus_mfa_tag = rman_get_bustag(sc->mfa_res);
sc->bus_mfa_handle = rman_get_bushandle(sc->mfa_res);
#endif
/* Allocate and register our interrupt. */
sc->intr_type = TWS_INTx; /* default */
if ( tws_enable_msi )
sc->intr_type = TWS_MSI;
if ( tws_setup_irq(sc) == FAILURE ) {
tws_log(sc, ALLOC_MEMORY_RES);
goto attach_fail_3;
}
/* Init callouts. */
callout_init(&sc->print_stats_handle);
callout_init(&sc->reset_cb_handle);
callout_init(&sc->reinit_handle);
/*
* Create a /dev entry for this device. The kernel will assign us
* a major number automatically. We use the unit number of this
* device as the minor number and name the character device
* "tws<unit>".
*/
sc->tws_cdev = make_dev(&tws_ops, device_get_unit(dev),
UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, "tws%u",
device_get_unit(dev));
sc->tws_cdev->si_drv1 = sc;
if ( tws_init(sc) == FAILURE ) {
tws_log(sc, TWS_INIT_FAILURE);
goto attach_fail_4;
}
if ( tws_init_ctlr(sc) == FAILURE ) {
tws_log(sc, TWS_CTLR_INIT_FAILURE);
goto attach_fail_4;
}
if ((error = tws_cam_attach(sc))) {
tws_log(sc, TWS_CAM_ATTACH);
goto attach_fail_4;
}
/* send init complete event */
lockmgr(&sc->gen_lock, LK_EXCLUSIVE);
tws_send_event(sc, TWS_INIT_COMPLETE);
lockmgr(&sc->gen_lock, LK_RELEASE);
TWS_TRACE_DEBUG(sc, "attached successfully", 0, sc->device_id);
return(0);
attach_fail_4:
for(i=0;i<sc->irqs;i++) {
if (sc->intr_handle[i]) {
if ((error = bus_teardown_intr(sc->tws_dev,
sc->irq_res[i], sc->intr_handle[i])))
TWS_TRACE(sc, "bus teardown intr", 0, error);
}
}
destroy_dev(sc->tws_cdev);
dev_ops_remove_minor(&tws_ops, device_get_unit(sc->tws_dev));
attach_fail_3:
for(i=0;i<sc->irqs;i++) {
if ( sc->irq_res[i] ){
if (bus_release_resource(sc->tws_dev,
SYS_RES_IRQ, sc->irq_res_id[i], sc->irq_res[i]))
TWS_TRACE(sc, "bus irq res", 0, 0);
}
}
#ifndef TWS_PULL_MODE_ENABLE
attach_fail_2:
#endif
if ( sc->mfa_res ){
if (bus_release_resource(sc->tws_dev,
SYS_RES_MEMORY, sc->mfa_res_id, sc->mfa_res))
TWS_TRACE(sc, "bus release ", 0, sc->mfa_res_id);
}
if ( sc->reg_res ){
if (bus_release_resource(sc->tws_dev,
SYS_RES_MEMORY, sc->reg_res_id, sc->reg_res))
TWS_TRACE(sc, "bus release2 ", 0, sc->reg_res_id);
}
attach_fail_1:
lockuninit(&sc->q_lock);
lockuninit(&sc->sim_lock);
lockuninit(&sc->gen_lock);
lockuninit(&sc->io_lock);
sysctl_ctx_free(&sc->tws_clist);
return (ENXIO);
}