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Slowly add more functionality as I learn more about newbus etc.

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This commit is contained in:
Julian Elischer 2000-10-25 15:08:11 +00:00
parent c418675341
commit d1d3a97409
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=67568
1 changed files with 93 additions and 22 deletions
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115
share/examples/drivers/make_device_driver.sh
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@ -141,9 +141,7 @@ static d_write_t ${1}write;
static d_ioctl_t ${1}ioctl;
static d_mmap_t ${1}mmap;
static d_poll_t ${1}poll;
#ifdef ${UPPER}_MODULE
static ointhand2_t ${1}intr; /* should actually have type inthand2_t */
#endif
static void ${1}intr(void *arg);
#define CDEV_MAJOR 20
static struct cdevsw ${1}_cdevsw = {
@ -168,6 +166,7 @@ static struct cdevsw ${1}_cdevsw = {
*/
#define BUFFERSIZE 1024
#define NUMPORTS 4
#define MEMSIZE 1024*1024 /* imaginable h/w buffer size */
/*
* One of these per allocated device
@ -175,10 +174,17 @@ static struct cdevsw ${1}_cdevsw = {
struct ${1}_softc {
bus_space_tag_t bt;
bus_space_handle_t bh;
int port_rid;
struct resource* port_res; /* resource for port range */
dev_t dev;
int rid_ioport;
int rid_memory;
int rid_irq;
int rid_drq;
struct resource* res_ioport; /* resource for port range */
struct resource* res_memory; /* resource for mem range */
struct resource* res_irq; /* resource for irq range */
struct resource* res_drq; /* resource for dma channel */
device_t device;
dev_t dev;
void *intr_cookie;
char buffer[BUFFERSIZE];
} ;
@ -219,8 +225,10 @@ ${1}_isa_probe (device_t device)
sc_p scp = device_get_softc(device);
bus_space_handle_t bh;
bus_space_tag_t bt;
struct resource *port_res;
int rid = 0;
struct resource* res_ioport; /* resource for port range */
struct resource* res_memory; /* resource for mem range */
struct resource* res_irq; /* resource for irq range */
struct resource* res_drq; /* resource for dma channel */
int size = 16; /* SIZE of port range used */
@ -255,31 +263,52 @@ ${1}_isa_probe (device_t device)
* which is read in by code in isa/isahint.c
*/
port_res = bus_alloc_resource(device, SYS_RES_IOPORT, &rid,
0ul, ~0ul, size, RF_ACTIVE);
if (port_res == NULL) {
res_ioport = bus_alloc_resource(device, SYS_RES_IOPORT,
&scp->rid_ioport, 0ul, ~0ul, size, RF_ACTIVE);
if (res_ioport == NULL) {
error = ENXIO;
break;
goto errexit;
}
res_irq = bus_alloc_resource(device, SYS_RES_IRQ,
&scp->rid_irq, 0ul, ~0ul, 1, RF_SHAREABLE);
if (res_irq == NULL) {
error = ENXIO;
goto errexit;
}
res_drq = bus_alloc_resource(device, SYS_RES_DRQ,
&scp->rid_drq, 0ul, ~0ul, 1, RF_ACTIVE);
if (res_drq == NULL) {
error = ENXIO;
goto errexit;
}
res_memory = bus_alloc_resource(device, SYS_RES_IOPORT,
&scp->rid_memory, 0ul, ~0ul, MSIZE, RF_ACTIVE);
if (res_memory == NULL) {
error = ENXIO;
goto errexit;
}
scp->port_rid = rid;
scp->port_res = port_res;
scp->bt = bt = rman_get_bustag(port_res);
scp->bh = bh = rman_get_bushandle(port_res);
scp->res_ioport = res_ioport;
scp->res_memory = res_memory;
scp->res_drq = res_drq;
scp->res_irq = res_irq;
scp->bt = bt = rman_get_bustag(res_ioport);
scp->bh = bh = rman_get_bushandle(res_ioport);
if ( ${UPPER}_INB(SOME_PORT) != EXPECTED_VALUE) {
/*
* It isn't what we expected,
* so release everything and quit looking for it.
*/
bus_release_resource(device, SYS_RES_IOPORT,
rid, port_res);
return (ENXIO);
goto errexit;
}
error = 0;
break;
case ENXIO:
/* not ours, leave imediatly */
errexit:
/* cleanup anything we may have assigned. */
${1}_isa_detach(device);
default:
error = ENXIO;
}
@ -295,9 +324,18 @@ ${1}_isa_attach (device_t device)
{
int unit = device_get_unit(device);
sc_p scp = device_get_softc(device);
device_t parent = device_get_parent(device);
scp->dev = make_dev(&${1}_cdevsw, 0, 0, 0, 0600, "${1}%d", unit);
scp->dev->si_drv1 = scp;
/* register the interrupt handler as default */
if (scp->res_irq) {
/* default to the tty mask for registration */ /* XXX */
if (BUS_SETUP_INTR(parent, device, scp->res_irq, INTR_TYPE_TTY,
${1}intr, device, &scp->intr_cookie) == 0) {
/* do something if successfull */
}
}
return 0;
}
@ -305,10 +343,43 @@ static int
${1}_isa_detach (device_t device)
{
sc_p scp = device_get_softc(device);
device_t parent = device_get_parent(device);
bus_release_resource(device, SYS_RES_IOPORT,
scp->port_rid, scp->port_res);
destroy_dev(scp->dev);
if (scp->res_irq != 0) {
if (BUS_TEARDOWN_INTR(parent, device,
scp->res_irq, scp->intr_cookie) != 0) {
printf("intr teardown failed.. continuing\n");
}
bus_deactivate_resource(device, SYS_RES_IRQ,
scp->rid_irq, scp->res_irq);
bus_release_resource(device, SYS_RES_IRQ,
scp->rid_irq, scp->res_irq);
scp->res_irq = 0;
}
if (scp->res_ioport != 0) {
bus_deactivate_resource(device, SYS_RES_IOPORT,
scp->rid_ioport, scp->res_ioport);
bus_release_resource(device, SYS_RES_IOPORT,
scp->rid_ioport, scp->res_ioport);
scp->res_ioport = 0;
}
if (scp->res_ioport != 0) {
bus_deactivate_resource(device, SYS_RES_MEMORY,
scp->rid_memory, scp->res_memory);
bus_release_resource(device, SYS_RES_MEMORY,
scp->rid_memory, scp->res_memory);
scp->res_ioport = 0;
}
if (scp->res_drq != 0) {
bus_deactivate_resource(device, SYS_RES_DRQ,
scp->rid_drq, scp->res_drq);
bus_release_resource(device, SYS_RES_DRQ,
scp->rid_drq, scp->res_drq);
scp->res_drq = 0;
}
if (scp->dev) {
destroy_dev(scp->dev);
}
return (0);
}