[src/riastradh-drm2]: src/sys Add local i915_pci.c for PCI driver attachment ...

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

details:   https://anonhg.NetBSD.org/src/rev/60aad3d7ea92
branches:  riastradh-drm2
changeset: 788366:60aad3d7ea92
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Jul 24 03:27:18 2013 +0000

description:
Add local i915_pci.c for PCI driver attachment goop.

diffstat:

 sys/external/bsd/drm2/i915drm/i915_pci.c |  148 +++++++++++++++++++++++++++++++
 sys/modules/i915drm2/Makefile            |    3 +-
 2 files changed, 150 insertions(+), 1 deletions(-)

diffs (168 lines):

diff -r a64b85e950f2 -r 60aad3d7ea92 sys/external/bsd/drm2/i915drm/i915_pci.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/external/bsd/drm2/i915drm/i915_pci.c  Wed Jul 24 03:27:18 2013 +0000
@@ -0,0 +1,148 @@
+/*     $NetBSD: i915_pci.c,v 1.1.2.1 2013/07/24 03:27:18 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: i915_pci.c,v 1.1.2.1 2013/07/24 03:27:18 riastradh Exp $");
+
+#include <sys/types.h>
+#include <sys/systm.h>
+
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+
+#include <drm/drmP.h>
+
+#include "i915_drv.h"
+
+struct i915drm_softc {
+       struct drm_device       sc_drm_dev;
+       struct pci_dev          sc_pci_dev;
+};
+
+static int     i915drm_match(device_t, cfdata_t, void *);
+static void    i915drm_attach(device_t, device_t, void *);
+static int     i915drm_detach(device_t, int);
+
+CFATTACH_DECL_NEW(i915drm, sizeof(struct i915drm_softc),
+    i915drm_match, i915drm_attach, i915drm_detach, NULL);
+
+/* XXX Kludge to get these from i915_drv.c.  */
+extern struct drm_driver *const i915_drm_driver;
+extern const struct pci_device_id *const i915_device_ids;
+extern const size_t i915_n_device_ids;
+
+static const struct intel_device_info *
+i915drm_pci_lookup(const struct pci_attach_args *pa)
+{
+       size_t i;
+
+       /* Attach only at function 0 to work around Intel lossage.  */
+       if (pa->pa_function != 0)
+               return NULL;
+
+       /* We're interested only in Intel products.  */
+       if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL)
+               return NULL;
+
+       /* We're interested only in Intel display devices.  */
+       if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY)
+               return NULL;
+
+       for (i = 0; i < i915_n_device_ids; i++)
+               if (PCI_PRODUCT(pa->pa_id) == i915_device_ids[i].device)
+                       break;
+
+       /* Did we find it?  */
+       if (i == i915_n_device_ids)
+               return NULL;
+
+       const struct intel_device_info *const info =
+           (const void *)(uintptr_t)i915_device_ids[i].driver_data;
+
+       /* XXX Whattakludge!  */
+       if (info->is_valleyview) {
+               printf("i915drm: preliminary hardware support disabled\n");
+               return NULL;
+       }
+
+       return info;
+}
+
+static int
+i915drm_match(device_t parent, cfdata_t match, void *aux)
+{
+       const struct pci_attach_args *const pa = aux;
+
+       return (i915drm_pci_lookup(pa) != NULL);
+}
+
+static void
+i915drm_attach(device_t parent, device_t self, void *aux)
+{
+       struct i915drm_softc *const sc = device_private(self);
+       const struct pci_attach_args *const pa = aux;
+       const struct intel_device_info *const info = i915drm_pci_lookup(pa);
+       const unsigned long flags =
+           (unsigned long)(uintptr_t)(const void *)info;
+
+       KASSERT(info != NULL);
+
+       /* XXX Whattakludge!  */
+       if (info->gen != 3) {
+               i915_drm_driver->driver_features &=~ DRIVER_REQUIRE_AGP;
+               i915_drm_driver->driver_features &=~ DRIVER_USE_AGP;
+       }
+
+       /* Initialize the drm pci driver state.  */
+       drm_pci_attach(self, pa, &sc->sc_pci_dev, &sc->sc_drm_dev);
+
+       /* Attach the drm driver.  */
+       drm_config_found(self, i915_drm_driver, flags, &sc->sc_drm_dev);
+}
+
+static int
+i915drm_detach(device_t self, int flags)
+{
+       struct i915drm_softc *const sc = device_private(self);
+       int error;
+
+       /* Detach the drm driver first.  */
+       error = config_detach_children(self, flags);
+       if (error)
+               return error;
+
+       /* drm driver is gone.  We can safely drop drm pci driver state.  */
+       error = drm_pci_detach(&sc->sc_drm_dev, flags);
+       if (error)
+               return error;
+
+       return 0;
+}
diff -r a64b85e950f2 -r 60aad3d7ea92 sys/modules/i915drm2/Makefile
--- a/sys/modules/i915drm2/Makefile     Wed Jul 24 03:26:53 2013 +0000
+++ b/sys/modules/i915drm2/Makefile     Wed Jul 24 03:27:18 2013 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.1.2.3 2013/07/24 03:24:36 riastradh Exp $
+# $NetBSD: Makefile,v 1.1.2.4 2013/07/24 03:27:18 riastradh Exp $
 
 .include "../Makefile.inc"
 .include "../drm2/Makefile.inc"
@@ -54,5 +54,6 @@
 SRCS+= intel_tv.c
 
 SRCS+= i915_module.c
+SRCS+= i915_pci.c
 
 .include <bsd.kmodule.mk>