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-rw-r--r--sys/dev/ieee488/pcii.c294
1 files changed, 31 insertions, 263 deletions
diff --git a/sys/dev/ieee488/pcii.c b/sys/dev/ieee488/pcii.c
index fadd96c..ab59545 100644
--- a/sys/dev/ieee488/pcii.c
+++ b/sys/dev/ieee488/pcii.c
@@ -6,22 +6,27 @@
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer as
- * the first lines of this file unmodified.
+ * notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
- * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Driver for GPIB cards based on NEC µPD7210 and compatibles.
+ *
+ * This driver just hooks up to the hardware and leaves all the interesting
+ * stuff to upd7210.c.
*
* Supported hardware:
* PCIIA compatible cards.
@@ -29,13 +34,6 @@
* Tested and known working:
* "B&C Microsystems PC488A-0"
*
- * A whole lot of wonderful things could be written for GPIB, but for now
- * I have just written it such that it is possible to capture data in the
- * mode known as "unaddressed listen only mode". This is what many plotters
- * and printers do on GPIB. This is enough to capture some output from
- * various test instruments.
- *
- * If you are interested in working on this, send me email.
*/
#include <sys/cdefs.h>
@@ -43,53 +41,27 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
-#include <sys/conf.h>
-#include <sys/malloc.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
-#include <sys/mutex.h>
-#include <sys/uio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
+#include <isa/isavar.h>
-/* ---> upd7210.h at some point. */
-
-struct upd7210 {
- bus_space_handle_t reg_handle[8];
- bus_space_tag_t reg_tag[8];
- u_int reg_offset[8];
-
- /* private stuff */
- struct mtx mutex;
- uint8_t rreg[8];
- uint8_t wreg[8];
-
- int busy;
- u_char *buf;
- size_t bufsize;
- u_int buf_wp;
- u_int buf_rp;
- struct cdev *cdev;
-};
-
-static void upd7210intr(void *);
-static void upd7210attach(struct upd7210 *);
-
-
-/* ----> pcii.c */
+#include <dev/ieee488/upd7210.h>
struct pcii_softc {
int foo;
struct resource *port[8];
struct resource *irq;
+ struct resource *dma;
void *intr_handler;
struct upd7210 upd7210;
};
-#define HERE() printf("pcii HERE %s:%d\n", __FILE__, __LINE__)
-
static devclass_t pcii_devclass;
static int pcii_probe(device_t dev);
@@ -190,8 +162,16 @@ pcii_attach(device_t dev)
upd7210intr, &sc->upd7210, &sc->intr_handler);
}
}
+ if (!error) {
+ rid = 0;
+ sc->dma = bus_alloc_resource_any(dev,
+ SYS_RES_DRQ, &rid, RF_ACTIVE | RF_SHAREABLE);
+ if (sc->dma == NULL)
+ sc->upd7210.dmachan = -1;
+ else
+ sc->upd7210.dmachan = rman_get_start(sc->dma);
+ }
if (error) {
-device_printf(dev, "error = %d\n", error);
for (i = 0; i < 8; i++) {
if (sc->port[i] == NULL)
break;
@@ -209,215 +189,3 @@ device_printf(dev, "error = %d\n", error);
DRIVER_MODULE(pcii, isa, pcii_driver, pcii_devclass, 0, 0);
DRIVER_MODULE(pcii, acpi, pcii_driver, pcii_devclass, 0, 0);
-
-/* ---> upd7210.c at some point */
-
-enum upd7210_wreg {
- CDOR = 0, /* Command/data out */
- IMR1 = 1, /* Interrupt mask 1 */
- IMR2 = 2, /* Interrupt mask 2 */
- SPMR = 3, /* Serial poll mode */
- ADMR = 4, /* Address mode */
- AUXMR = 5, /* Auxilliary mode */
- ADR = 6, /* Address */
- EOSR = 7, /* End-of-string */
-};
-
-enum upd7210_rreg {
- DIR = 0, /* Data in */
- ISR1 = 1, /* Interrupt status 1 */
- ISR2 = 2, /* Interrupt status 2 */
- SPSR = 3, /* Serial poll status */
- ADSR = 4, /* Address status */
- CPTR = 5, /* Command pass though */
- ADR0 = 6, /* Address 1 */
- ADR1 = 7, /* Address 2 */
-};
-
-#define AUXMR_PON 0x00
-#define AUXMR_CRST 0x02
-#define AUXMR_RFD 0x03
-#define AUXMR_SEOI 0x06
-#define AUXMR_GTS 0x10
-#define AUXMR_TCA 0x11
-#define AUXMR_TCS 0x12
-#define AUXMR_TCSE 0x1a
-#define AUXMR_DSC 0x14
-#define AUXMR_CIFC 0x16
-#define AUXMR_SIFC 0x1e
-#define AUXMR_CREN 0x17
-#define AUXMR_SREN 0x1f
-#define AUXMR_ICTR 0x20
-#define AUXMR_PPR 0x60
-#define AUXMR_RA 0x80
-#define AUXMR_RB 0xa0
-#define AUXMR_RE 0xc0
-
-
-/* upd7210 generic stuff */
-
-static u_int
-read_reg(struct upd7210 *u, enum upd7210_rreg reg)
-{
- u_int r;
-
- r = bus_space_read_1(
- u->reg_tag[reg],
- u->reg_handle[reg],
- u->reg_offset[reg]);
- u->rreg[reg] = r;
- return (r);
-}
-
-static void
-write_reg(struct upd7210 *u, enum upd7210_wreg reg, u_int val)
-{
- bus_space_write_1(
- u->reg_tag[reg],
- u->reg_handle[reg],
- u->reg_offset[reg], val);
- u->wreg[reg] = val;
-}
-
-static void
-upd7210intr(void *arg)
-{
- int i;
- u_int isr1, isr2;
- struct upd7210 *u;
-
- u = arg;
- mtx_lock(&u->mutex);
- isr1 = read_reg(u, ISR1);
- isr2 = read_reg(u, ISR2);
- if (isr1 & 1) {
- i = read_reg(u, DIR);
- u->buf[u->buf_wp++] = i;
- u->buf_wp &= (u->bufsize - 1);
- i = (u->buf_rp + u->bufsize - u->buf_wp) & (u->bufsize - 1);
- if (i < 8)
- write_reg(u, IMR1, 0);
- wakeup(u->buf);
- } else {
- printf("upd7210intr [%02x %02x %02x",
- read_reg(u, DIR), isr1, isr2);
- printf(" %02x %02x %02x %02x %02x]\n",
- read_reg(u, SPSR),
- read_reg(u, ADSR),
- read_reg(u, CPTR),
- read_reg(u, ADR0),
- read_reg(u, ADR1));
- }
- mtx_unlock(&u->mutex);
-}
-
-static int
-gpib_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
-{
- struct upd7210 *u;
-
- u = dev->si_drv1;
-
- mtx_lock(&u->mutex);
- if (u->busy)
- return (EBUSY);
- u->busy = 1;
- mtx_unlock(&u->mutex);
-
- u->buf = malloc(PAGE_SIZE, M_DEVBUF, M_WAITOK);
- u->bufsize = PAGE_SIZE;
- u->buf_wp = 0;
- u->buf_rp = 0;
-
- write_reg(u, AUXMR, AUXMR_CRST);
- DELAY(10000);
- write_reg(u, AUXMR, AUXMR_ICTR | 8);
- DELAY(1000);
- write_reg(u, ADR, 0x60);
- write_reg(u, ADR, 0xe0);
- write_reg(u, ADMR, 0x70);
- write_reg(u, AUXMR, AUXMR_PON);
- write_reg(u, IMR1, 0x01);
- return (0);
-}
-
-static int
-gpib_close(struct cdev *dev, int oflags, int devtype, struct thread *td)
-{
- struct upd7210 *u;
-
- u = dev->si_drv1;
-
- mtx_lock(&u->mutex);
- u->busy = 0;
- write_reg(u, AUXMR, AUXMR_CRST);
- DELAY(10000);
- write_reg(u, IMR1, 0x00);
- write_reg(u, IMR2, 0x00);
- free(u->buf, M_DEVBUF);
- u->buf = NULL;
- mtx_unlock(&u->mutex);
- return (0);
-}
-
-static int
-gpib_read(struct cdev *dev, struct uio *uio, int ioflag)
-{
- struct upd7210 *u;
- int error;
- size_t z;
-
- u = dev->si_drv1;
- error = 0;
-
- mtx_lock(&u->mutex);
- while (u->buf_wp == u->buf_rp) {
- error = msleep(u->buf, &u->mutex, PZERO | PCATCH,
- "gpibrd", hz);
- if (error && error != EWOULDBLOCK) {
- mtx_unlock(&u->mutex);
- return (error);
- }
- }
- while (uio->uio_resid > 0 && u->buf_wp != u->buf_rp) {
- if (u->buf_wp < u->buf_rp)
- z = u->bufsize - u->buf_rp;
- else
- z = u->buf_wp - u->buf_rp;
- if (z > uio->uio_resid)
- z = uio->uio_resid;
- mtx_unlock(&u->mutex);
- error = uiomove(u->buf + u->buf_rp, z, uio);
- mtx_lock(&u->mutex);
- if (error)
- break;
- u->buf_rp += z;
- u->buf_rp &= (u->bufsize - 1);
- }
- if (u->wreg[IMR1] == 0)
- write_reg(u, IMR1, 0x01);
- mtx_unlock(&u->mutex);
- return (error);
-}
-
-
-
-struct cdevsw gpib_cdevsw = {
- .d_version = D_VERSION,
- .d_name = "gpib",
- .d_open = gpib_open,
- .d_close = gpib_close,
- .d_read = gpib_read,
-};
-
-static void
-upd7210attach(struct upd7210 *u)
-{
- int unit = 0;
-
- mtx_init(&u->mutex, "gpib", NULL, MTX_DEF);
- u->cdev = make_dev(&gpib_cdevsw, unit,
- UID_ROOT, GID_WHEEL, 0444,
- "gpib%ul", unit);
- u->cdev->si_drv1 = u;
-}
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