[src/riastradh-drm2]: src/sys/external/bsd/drm2/pci First draft of a local dr...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/45bb6d7c3629
branches:  riastradh-drm2
changeset: 788178:45bb6d7c3629
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Jul 24 02:35:07 2013 +0000

description:
First draft of a local drm_pci.c.

diffstat:

 sys/external/bsd/drm2/pci/drm_pci.c |  162 ++++++++++++++++++++++++++++++++++++
 1 files changed, 162 insertions(+), 0 deletions(-)

diffs (166 lines):

diff -r 833bd48a0223 -r 45bb6d7c3629 sys/external/bsd/drm2/pci/drm_pci.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/external/bsd/drm2/pci/drm_pci.c       Wed Jul 24 02:35:07 2013 +0000
@@ -0,0 +1,162 @@
+/*     $NetBSD: drm_pci.c,v 1.1.2.1 2013/07/24 02:35:07 riastradh Exp $        */
+
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Taylor R. Campbell.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * 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.
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: drm_pci.c,v 1.1.2.1 2013/07/24 02:35:07 riastradh Exp $");
+
+#include <sys/types.h>
+#include <sys/errno.h>
+#include <sys/systm.h>
+
+#include <dev/pci/pcivar.h>
+
+#include <drm/drmP.h>
+
+static int     drm_pci_get_irq(struct drm_device *);
+static int     drm_pci_irq_install(struct drm_device *,
+                   irqreturn_t (*)(void *), int, const char *, void *,
+                   struct drm_bus_irq_cookie **);
+static void    drm_pci_irq_uninstall(struct drm_device *,
+                   struct drm_bus_irq_cookie *);
+static const char *
+               drm_pci_get_name(struct drm_device *);
+static int     drm_pci_set_busid(struct drm_device *, struct drm_master *);
+static int     drm_pci_set_unique(struct drm_device *, struct drm_master *,
+                   struct drm_unique *);
+static int     drm_pci_irq_by_busid(struct drm_device *,
+                   struct drm_irq_busid *);
+static int     drm_pci_agp_init(struct drm_device *);
+
+const struct drm_bus drm_pci_bus = {
+       .bus_type = DRIVER_BUS_PCI,
+       .get_irq = drm_pci_get_irq,
+       .irq_install = drm_pci_irq_install,
+       .irq_uninstall = drm_pci_irq_uninstall,
+       .get_name = drm_pci_get_name,
+       .set_busid = drm_pci_set_busid,
+       .set_unique = drm_pci_set_unique,
+       .irq_by_busid = drm_pci_irq_by_busid,
+       .agp_init = drm_pci_agp_init,
+};
+
+static const struct pci_attach_args *
+drm_pci_attach_args(struct drm_device *dev)
+{
+       return &dev->pdev->pd_pa;
+}
+
+static int
+drm_pci_get_irq(struct drm_device *dev)
+{
+       pci_intr_handle_t ih_pih;
+       int ih_int;
+
+       /*
+        * This is a compile-time assertion that the types match.  If
+        * this fails, we have to change a bunch of drm code that uses
+        * int for intr handles.
+        */
+       KASSERT(&ih_pih != &ih_int);
+
+       if (pci_intr_map(drm_pci_attach_args(dev), &ih_pih))
+               return -1;      /* XXX Hope -1 is an invalid intr handle.  */
+
+       ih_int = ih_pih;
+       return ih_int;
+}
+
+static int
+drm_pci_irq_install(struct drm_device *dev, irqreturn_t (*handler)(void *),
+    int flags, const char *name, void *arg,
+    struct drm_bus_irq_cookie **cookiep)
+{
+       const struct pci_attach_args *const pa = drm_pci_attach_args(dev);
+       pci_intr_handle_t ih;
+       const char *intrstr;
+       void *ih_cookie;
+
+       if (pci_intr_map(pa, &ih))
+               return -ENOENT;
+
+       intrstr = pci_intr_string(pa->pa_pc, ih);
+       ih_cookie = pci_intr_establish(pa->pa_pc, ih, IPL_DRM, handler, arg);
+       if (ih_cookie == NULL) {
+               aprint_error_dev(dev->dev,
+                   "couldn't establish interrupt at %s (%s)\n",
+                   intrstr, name);
+               return -ENOENT;
+       }
+
+       aprint_normal_dev(dev->dev, "interrupting at %s (%s)\n",
+           intrstr, name);
+       *cookiep = (struct drm_bus_irq_cookie *)ih_cookie;
+       return 0;
+}
+
+static void
+drm_pci_irq_uninstall(struct drm_device *dev,
+    struct drm_bus_irq_cookie *cookie)
+{
+       const struct pci_attach_args *pa = drm_pci_attach_args(dev);
+
+       pci_intr_disestablish(pa->pa_pc, (void *)cookie);
+}
+
+static const char *
+drm_pci_get_name(struct drm_device *dev)
+{
+       return "pci";           /* XXX PCI bus names?  */
+}
+
+static int
+drm_pci_set_busid(struct drm_device *dev, struct drm_master *master)
+{
+       return -ENOSYS;         /* XXX PCI bus ids?  */
+}
+
+static int
+drm_pci_set_unique(struct drm_device *dev, struct drm_master *master,
+    struct drm_unique *unique)
+{
+       return -ENOSYS;         /* XXX */
+}
+
+static int
+drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *busid)
+{
+       return -ENOSYS;         /* XXX */
+}
+
+static int
+drm_pci_agp_init(struct drm_device *dev)
+{
+       return -ENOSYS;         /* XXX */
+}