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[src/isaki-audio2]: src/sys/dev/pad Revive clonify.
details: https://anonhg.NetBSD.org/src/rev/7360b755b92b
branches: isaki-audio2
changeset: 451109:7360b755b92b
user: isaki <isaki%NetBSD.org@localhost>
date: Mon May 06 13:40:03 2019 +0000
description:
Revive clonify.
XXX should clean code more.
diffstat:
sys/dev/pad/pad.c | 453 +++++++++++++++++++++++++++++++++++------------------
1 files changed, 300 insertions(+), 153 deletions(-)
diffs (truncated from 654 to 300 lines):
diff -r 6d5662cee549 -r 7360b755b92b sys/dev/pad/pad.c
--- a/sys/dev/pad/pad.c Sun May 05 05:59:40 2019 +0000
+++ b/sys/dev/pad/pad.c Mon May 06 13:40:03 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pad.c,v 1.58.2.3 2019/05/05 02:01:34 isaki Exp $ */
+/* $NetBSD: pad.c,v 1.58.2.4 2019/05/06 13:40:03 isaki Exp $ */
/*-
* Copyright (c) 2007 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,23 +27,25 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.58.2.3 2019/05/05 02:01:34 isaki Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.58.2.4 2019/05/06 13:40:03 isaki Exp $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/buf.h>
+#include <sys/file.h>
+#include <sys/filedesc.h>
+#include <sys/vnode.h>
+#include <sys/kauth.h>
#include <sys/kmem.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/condvar.h>
#include <sys/select.h>
+#include <sys/stat.h>
#include <sys/audioio.h>
-#include <sys/vnode.h>
#include <sys/module.h>
-#include <sys/atomic.h>
-#include <sys/time.h>
#include <dev/audio/audio_if.h>
#include <dev/audio/audiovar.h>
@@ -57,6 +59,8 @@
#define DPRINTF(fmt...) /**/
#endif
+#define MAXDEVS 128
+#define PADCLONER 254
#define PADUNIT(x) minor(x)
#define PADFREQ 44100
@@ -64,6 +68,7 @@
#define PADPREC 16
extern struct cfdriver pad_cd;
+kmutex_t padconfig;
typedef struct pad_block {
uint8_t *pb_ptr;
@@ -85,8 +90,8 @@
static int pad_query_format(void *, audio_format_query_t *);
static int pad_set_format(void *, int,
- const audio_params_t *, const audio_params_t *,
- audio_filter_reg_t *, audio_filter_reg_t *);
+ const audio_params_t *, const audio_params_t *,
+ audio_filter_reg_t *, audio_filter_reg_t *);
static int pad_start_output(void *, void *, int,
void (*)(void *), void *);
static int pad_start_input(void *, void *, int,
@@ -103,7 +108,18 @@
static void pad_done_output(void *);
static void pad_swvol_codec(audio_filter_arg_t *);
-static bool pad_is_attached; /* Do we have an audio* child? */
+static int pad_close(struct pad_softc *);
+static int pad_read(struct pad_softc *, off_t *, struct uio *, kauth_cred_t, int);
+
+static int fops_pad_close(struct file *);
+static int fops_pad_read(struct file *, off_t *, struct uio *, kauth_cred_t, int);
+static int pad_write(struct file *, off_t *, struct uio *, kauth_cred_t, int);
+static int pad_ioctl(struct file *, u_long, void *);
+static int pad_kqfilter(struct file *, struct knote *);
+static int pad_poll(struct file *, int);
+static int pad_stat(struct file *, struct stat *);
+static int pad_mmap(struct file *, off_t *, size_t, int, int *, int *,
+ struct uvm_object **, int *);
static const struct audio_hw_if pad_hw_if = {
.query_format = pad_query_format,
@@ -121,14 +137,9 @@
};
#define PAD_NFORMATS 1
-#if defined(PAD_SUPPORT_RECORD)
-#define PADMODE (AUMODE_PLAY | AUMODE_RECORD)
-#else
-#define PADMODE AUMODE_PLAY
-#endif
static const struct audio_format pad_formats[PAD_NFORMATS] = {
{
- .mode = PADMODE,
+ .mode = AUMODE_PLAY,
.encoding = AUDIO_ENCODING_SLINEAR_NE,
.validbits = PADPREC,
.precision = PADPREC,
@@ -144,14 +155,14 @@
static int pad_add_block(pad_softc_t *, uint8_t *, int);
static int pad_get_block(pad_softc_t *, pad_block_t *, int);
-dev_type_open(pad_dev_open);
-dev_type_close(pad_dev_close);
-dev_type_read(pad_dev_read);
+dev_type_open(pad_open);
+dev_type_close(cdev_pad_close);
+dev_type_read(cdev_pad_read);
const struct cdevsw pad_cdevsw = {
- .d_open = pad_dev_open,
- .d_close = pad_dev_close,
- .d_read = pad_dev_read,
+ .d_open = pad_open,
+ .d_close = cdev_pad_close,
+ .d_read = cdev_pad_read,
.d_write = nowrite,
.d_ioctl = noioctl,
.d_stop = nostop,
@@ -163,35 +174,36 @@
.d_flag = D_OTHER | D_MPSAFE,
};
+const struct fileops pad_fileops = {
+ .fo_name = "pad",
+ .fo_read = fops_pad_read,
+ .fo_write = pad_write,
+ .fo_ioctl = pad_ioctl,
+ .fo_fcntl = fnullop_fcntl,
+ .fo_stat = pad_stat,
+ .fo_poll = pad_poll,
+ .fo_close = fops_pad_close,
+ .fo_mmap = pad_mmap,
+ .fo_kqfilter = pad_kqfilter,
+ .fo_restart = fnullop_restart
+};
+
CFATTACH_DECL2_NEW(pad, sizeof(pad_softc_t), pad_match, pad_attach, pad_detach,
NULL, NULL, pad_childdet);
void
padattach(int n)
{
- int i, err;
- cfdata_t cf;
+ int error;
- aprint_debug("pad: requested %d units\n", n);
- DPRINTF("%s: requested %d units\n", __func__, n);
-
- err = config_cfattach_attach(pad_cd.cd_name, &pad_ca);
- if (err) {
+ error = config_cfattach_attach(pad_cd.cd_name, &pad_ca);
+ if (error) {
aprint_error("%s: couldn't register cfattach: %d\n",
- pad_cd.cd_name, err);
+ pad_cd.cd_name, error);
config_cfdriver_detach(&pad_cd);
return;
}
-
- for (i = 0; i < n; i++) {
- cf = kmem_alloc(sizeof(struct cfdata), KM_SLEEP);
- cf->cf_name = pad_cd.cd_name;
- cf->cf_atname = pad_cd.cd_name;
- cf->cf_unit = i;
- cf->cf_fstate = FSTATE_STAR;
-
- (void)config_attach_pseudo(cf);
- }
+ mutex_init(&padconfig, MUTEX_DEFAULT, IPL_NONE);
return;
}
@@ -260,14 +272,89 @@
static void
pad_attach(device_t parent, device_t self, void *opaque)
{
- pad_softc_t *sc = device_private(self);
-
aprint_normal_dev(self, "outputs: 44100Hz, 16-bit, stereo\n");
- sc->sc_dev = self;
- sc->sc_open = 0;
+ return;
+}
+
+static int
+pad_detach(device_t self, int flags)
+{
+ pad_softc_t *sc;
+ int cmaj, mn;
+
+ sc = device_private(self);
+ cmaj = cdevsw_lookup_major(&pad_cdevsw);
+ mn = device_unit(sc->sc_dev);
+ if (!sc->sc_dying)
+ vdevgone(cmaj, mn, mn, VCHR);
+
+ return 0;
+}
+
+int
+pad_open(dev_t dev, int flags, int fmt, struct lwp *l)
+{
+ pad_softc_t *sc;
+ struct file *fp;
+ device_t paddev;
+ cfdata_t cf;
+ int error, fd, i;
+
+ error = 0;
- cv_init(&sc->sc_condvar, device_xname(self));
+ mutex_enter(&padconfig);
+ if (PADUNIT(dev) == PADCLONER) {
+ for (i = 0; i < MAXDEVS; i++) {
+ if (device_lookup(&pad_cd, i) == NULL)
+ break;
+ }
+ if (i == MAXDEVS)
+ goto bad;
+ } else {
+ if (PADUNIT(dev) >= MAXDEVS)
+ goto bad;
+ i = PADUNIT(dev);
+ }
+
+ cf = kmem_alloc(sizeof(struct cfdata), KM_SLEEP);
+ cf->cf_name = pad_cd.cd_name;
+ cf->cf_atname = pad_cd.cd_name;
+ cf->cf_unit = i;
+ cf->cf_fstate = FSTATE_STAR;
+
+ bool existing = false;
+ paddev = device_lookup(&pad_cd, minor(dev));
+ if (paddev == NULL)
+ paddev = config_attach_pseudo(cf);
+ else
+ existing = true;
+ if (paddev == NULL)
+ goto bad;
+
+ sc = device_private(paddev);
+ if (sc == NULL)
+ goto bad;
+
+ if (sc->sc_open == 1) {
+ mutex_exit(&padconfig);
+ return EBUSY;
+ }
+
+ sc->sc_dev = paddev;
+ sc->sc_dying = false;
+
+ if (PADUNIT(dev) == PADCLONER) {
+ error = fd_allocfile(&fp, &fd);
+ if (error) {
+ if (existing == false)
+ config_detach(sc->sc_dev, 0);
+ mutex_exit(&padconfig);
+ return error;
+ }
+ }
+
+ cv_init(&sc->sc_condvar, device_xname(sc->sc_dev));
mutex_init(&sc->sc_cond_lock, MUTEX_DEFAULT, IPL_NONE);
mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_NONE);
@@ -278,86 +365,172 @@
sc->sc_rpos = sc->sc_wpos = 0;
sc->sc_audiodev = audio_attach_mi(&pad_hw_if, sc, sc->sc_dev);
- if (!pmf_device_register(self, NULL, NULL))
- aprint_error_dev(self, "couldn't establish power handler\n");
+ if (!pmf_device_register(sc->sc_dev, NULL, NULL))
+ aprint_error_dev(sc->sc_dev, "couldn't establish power handler\n");
+
+ if (PADUNIT(dev) == PADCLONER) {
+ error = fd_clone(fp, fd, flags, &pad_fileops, sc);
+ KASSERT(error == EMOVEFD);
+ }
+ sc->sc_open = 1;
+ mutex_exit(&padconfig);
+
+ return error;
+bad:
+ mutex_exit(&padconfig);
+ return ENXIO;
+}
+
+static int
+pad_close(struct pad_softc *sc)
+{
+ int rc;
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