static int
lpbb_callback(device_t dev, int index, caddr_t data)
{
device_t ppbus = device_get_parent(dev);
int error = 0;
int how;
switch (index) {
case IIC_REQUEST_BUS:
/* request the ppbus */
how = *(int *)data;
ppb_lock(ppbus);
error = ppb_request_bus(ppbus, dev, how);
ppb_unlock(ppbus);
break;
case IIC_RELEASE_BUS:
/* release the ppbus */
ppb_lock(ppbus);
error = ppb_release_bus(ppbus, dev);
ppb_unlock(ppbus);
break;
default:
error = EINVAL;
}
return (error);
}
/*
* vpo_probe()
*/
static int
vpo_probe(device_t dev)
{
device_t ppbus = device_get_parent(dev);
struct vpo_data *vpo;
int error;
vpo = DEVTOSOFTC(dev);
vpo->vpo_dev = dev;
/* check ZIP before ZIP+ or imm_probe() will send controls to
* the printer or whatelse connected to the port */
ppb_lock(ppbus);
if ((error = vpoio_probe(dev, &vpo->vpo_io)) == 0) {
vpo->vpo_isplus = 0;
device_set_desc(dev,
"Iomega VPI0 Parallel to SCSI interface");
} else if ((error = imm_probe(dev, &vpo->vpo_io)) == 0) {
vpo->vpo_isplus = 1;
device_set_desc(dev,
"Iomega Matchmaker Parallel to SCSI interface");
} else {
ppb_unlock(ppbus);
return (error);
}
ppb_unlock(ppbus);
return (0);
}
static int
lpbb_detect(device_t dev)
{
device_t ppbus = device_get_parent(dev);
ppb_lock(ppbus);
if (ppb_request_bus(ppbus, dev, PPB_DONTWAIT)) {
ppb_unlock(ppbus);
device_printf(dev, "can't allocate ppbus\n");
return (0);
}
lpbb_reset_bus(dev);
if ((ppb_rstr(ppbus) & I2CKEY) ||
((ppb_rstr(ppbus) & ALIM) != ALIM)) {
ppb_release_bus(ppbus, dev);
ppb_unlock(ppbus);
return (0);
}
ppb_release_bus(ppbus, dev);
ppb_unlock(ppbus);
return (1);
}
/*
* vpoio_attach()
*
* Low level attachment of vpo device
*
*/
int
vpoio_attach(struct vpoio_data *vpo)
{
DECLARE_NIBBLE_INBYTE_SUBMICROSEQ;
device_t ppbus = device_get_parent(vpo->vpo_dev);
int error = 0;
vpo->vpo_nibble_inbyte_msq = (struct ppb_microseq *)malloc(
sizeof(nibble_inbyte_submicroseq), M_DEVBUF, M_NOWAIT);
if (!vpo->vpo_nibble_inbyte_msq)
return (ENXIO);
bcopy((void *)nibble_inbyte_submicroseq,
(void *)vpo->vpo_nibble_inbyte_msq,
sizeof(nibble_inbyte_submicroseq));
ppb_MS_init_msq(vpo->vpo_nibble_inbyte_msq, 4,
INB_NIBBLE_H, (void *)&(vpo)->vpo_nibble.h,
INB_NIBBLE_L, (void *)&(vpo)->vpo_nibble.l,
INB_NIBBLE_F, nibble_inbyte_hook,
INB_NIBBLE_P, (void *)&(vpo)->vpo_nibble);
/*
* Initialize mode dependent in/out microsequences
*/
ppb_lock(ppbus);
if ((error = ppb_request_bus(ppbus, vpo->vpo_dev, PPB_WAIT)))
goto error;
/* ppbus sets automatically the last mode entered during detection */
switch (vpo->vpo_mode_found) {
case VP0_MODE_EPP:
ppb_MS_GET_init(ppbus, vpo->vpo_dev, epp17_instr_body);
ppb_MS_PUT_init(ppbus, vpo->vpo_dev, epp17_outstr_body);
device_printf(vpo->vpo_dev, "EPP mode\n");
break;
case VP0_MODE_PS2:
ppb_MS_GET_init(ppbus, vpo->vpo_dev, ps2_inbyte_submicroseq);
ppb_MS_PUT_init(ppbus, vpo->vpo_dev, spp_outbyte_submicroseq);
device_printf(vpo->vpo_dev, "PS2 mode\n");
break;
case VP0_MODE_NIBBLE:
ppb_MS_GET_init(ppbus, vpo->vpo_dev, vpo->vpo_nibble_inbyte_msq);
ppb_MS_PUT_init(ppbus, vpo->vpo_dev, spp_outbyte_submicroseq);
device_printf(vpo->vpo_dev, "NIBBLE mode\n");
break;
default:
panic("vpo: unknown mode %d", vpo->vpo_mode_found);
}
ppb_release_bus(ppbus, vpo->vpo_dev);
error:
ppb_unlock(ppbus);
return (error);
}
static int
lpbb_getsda(device_t dev)
{
device_t ppbus = device_get_parent(dev);
int rval;
ppb_lock(ppbus);
rval = ((ppb_rstr(ppbus) & SDA_in) == SDA_in);
ppb_unlock(ppbus);
return (rval);
}
static void
lpbb_setscl(device_t dev, int val)
{
device_t ppbus = device_get_parent(dev);
ppb_lock(ppbus);
if (val == 0)
ppb_wctr(ppbus, (u_char)(ppb_rctr(ppbus) & ~SCL_out));
else
ppb_wctr(ppbus, (u_char)(ppb_rctr(ppbus) | SCL_out));
ppb_unlock(ppbus);
}
static void
lpbb_setsda(device_t dev, int val)
{
device_t ppbus = device_get_parent(dev);
ppb_lock(ppbus);
if (val == 0)
ppb_wdtr(ppbus, (u_char)SDA_out);
else
ppb_wdtr(ppbus, (u_char)~SDA_out);
ppb_unlock(ppbus);
}
/*
* vpo_attach()
*/
static int
vpo_attach(device_t dev)
{
struct vpo_data *vpo = DEVTOSOFTC(dev);
device_t ppbus = device_get_parent(dev);
struct ppb_data *ppb = device_get_softc(ppbus); /* XXX: layering */
struct cam_devq *devq;
int error;
/* low level attachment */
if (vpo->vpo_isplus) {
if ((error = imm_attach(&vpo->vpo_io)))
return (error);
} else {
if ((error = vpoio_attach(&vpo->vpo_io)))
return (error);
}
/*
** Now tell the generic SCSI layer
** about our bus.
*/
devq = cam_simq_alloc(/*maxopenings*/1);
/* XXX What about low-level detach on error? */
if (devq == NULL)
return (ENXIO);
vpo->sim = cam_sim_alloc(vpo_action, vpo_poll, "vpo", vpo,
device_get_unit(dev), ppb->ppc_lock,
/*untagged*/1, /*tagged*/0, devq);
if (vpo->sim == NULL) {
cam_simq_free(devq);
return (ENXIO);
}
ppb_lock(ppbus);
if (xpt_bus_register(vpo->sim, dev, /*bus*/0) != CAM_SUCCESS) {
cam_sim_free(vpo->sim, /*free_devq*/TRUE);
ppb_unlock(ppbus);
return (ENXIO);
}
ppb_unlock(ppbus);
return (0);
}
static int
lpbb_reset(device_t dev, u_char speed, u_char addr, u_char * oldaddr)
{
device_t ppbus = device_get_parent(dev);
ppb_lock(ppbus);
if (ppb_request_bus(ppbus, dev, PPB_DONTWAIT)) {
ppb_unlock(ppbus);
device_printf(dev, "can't allocate ppbus\n");
return (0);
}
lpbb_reset_bus(dev);
ppb_release_bus(ppbus, dev);
ppb_unlock(ppbus);
return (IIC_ENOADDR);
}
