Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

This is a major rework of the nouveau driver core, to reflect more closely
how the hw is used and to make it easier to implement newer features now
that the GPUs are more clearly understood than when nouveau started.

It also contains a few other bits:
thermal patches
nv41/44 pcie gart fixes
i2c unregistering fixes.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: (191 commits)
  drm/nv98/crypt: fix fuc build with latest envyas
  drm/nouveau/devinit: fixup various issues with subdev ctor/init ordering
  drm/nv41/vm: fix and enable use of "real" pciegart
  drm/nv44/vm: fix and enable use of "real" pciegart
  drm/nv04/dmaobj: fixup vm target handling in preparation for nv4x pcie
  drm/nouveau: store supported dma mask in vmmgr
  drm/nvc0/ibus: initial implementation of subdev
  drm/nouveau/therm: add support for fan-control modes
  drm/nouveau/hwmon: rename pwm0* to pmw1* to follow hwmon's rules
  drm/nouveau/therm: calculate the pwm divisor on nv50+
  drm/nouveau/fan: rewrite the fan tachometer driver to get more precision, faster
  drm/nouveau/therm: move thermal-related functions to the therm subdev
  drm/nouveau/bios: parse the pwm divisor from the perf table
  drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices
  drm/nouveau/therm: rework thermal table parsing
  drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table
  drm/nouveau: fix pm initialization order
  drm/nouveau/bios: check that fixed tvdac gpio data is valid before using it
  drm/nouveau: log channel debug/error messages from client object rather than drm client
  drm/nouveau: have drm debugging macros build on top of core macros
  ...

Conflicts:
	drivers/gpu/drm/nouveau/nouveau_dp.c

1 files changed, 152 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_agp.c b/drivers/gpu/drm/nouveau/nouveau_agp.c
new file mode 100644
index 000000000000..d28430cd2ba6
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_agp.c
@@ -0,0 +1,152 @@
+#include <linux/module.h>
+
+#include <core/device.h>
+
+#include "nouveau_drm.h"
+#include "nouveau_agp.h"
+#include "nouveau_reg.h"
+
+#if __OS_HAS_AGP
+MODULE_PARM_DESC(agpmode, "AGP mode (0 to disable AGP)");
+static int nouveau_agpmode = -1;
+module_param_named(agpmode, nouveau_agpmode, int, 0400);
+
+static unsigned long
+get_agp_mode(struct nouveau_drm *drm, unsigned long mode)
+{
+	struct nouveau_device *device = nv_device(drm->device);
+
+	/*
+	 * FW seems to be broken on nv18, it makes the card lock up
+	 * randomly.
+	 */
+	if (device->chipset == 0x18)
+		mode &= ~PCI_AGP_COMMAND_FW;
+
+	/*
+	 * AGP mode set in the command line.
+	 */
+	if (nouveau_agpmode > 0) {
+		bool agpv3 = mode & 0x8;
+		int rate = agpv3 ? nouveau_agpmode / 4 : nouveau_agpmode;
+
+		mode = (mode & ~0x7) | (rate & 0x7);
+	}
+
+	return mode;
+}
+
+static bool
+nouveau_agp_enabled(struct nouveau_drm *drm)
+{
+	struct drm_device *dev = drm->dev;
+
+	if (!drm_pci_device_is_agp(dev) || !dev->agp)
+		return false;
+
+	if (drm->agp.stat == UNKNOWN) {
+		if (!nouveau_agpmode)
+			return false;
+		return true;
+	}
+
+	return (drm->agp.stat == ENABLED);
+}
+#endif
+
+void
+nouveau_agp_reset(struct nouveau_drm *drm)
+{
+#if __OS_HAS_AGP
+	struct nouveau_device *device = nv_device(drm->device);
+	struct drm_device *dev = drm->dev;
+	u32 save[2];
+	int ret;
+
+	if (!nouveau_agp_enabled(drm))
+		return;
+
+	/* First of all, disable fast writes, otherwise if it's
+	 * already enabled in the AGP bridge and we disable the card's
+	 * AGP controller we might be locking ourselves out of it. */
+	if ((nv_rd32(device, NV04_PBUS_PCI_NV_19) |
+	     dev->agp->mode) & PCI_AGP_COMMAND_FW) {
+		struct drm_agp_info info;
+		struct drm_agp_mode mode;
+
+		ret = drm_agp_info(dev, &info);
+		if (ret)
+			return;
+
+		mode.mode  = get_agp_mode(drm, info.mode);
+		mode.mode &= ~PCI_AGP_COMMAND_FW;
+
+		ret = drm_agp_enable(dev, mode);
+		if (ret)
+			return;
+	}
+
+
+	/* clear busmaster bit, and disable AGP */
+	save[0] = nv_mask(device, NV04_PBUS_PCI_NV_1, 0x00000004, 0x00000000);
+	nv_wr32(device, NV04_PBUS_PCI_NV_19, 0);
+
+	/* reset PGRAPH, PFIFO and PTIMER */
+	save[1] = nv_mask(device, 0x000200, 0x00011100, 0x00000000);
+	nv_mask(device, 0x000200, 0x00011100, save[1]);
+
+	/* and restore bustmaster bit (gives effect of resetting AGP) */
+	nv_wr32(device, NV04_PBUS_PCI_NV_1, save[0]);
+#endif
+}
+
+void
+nouveau_agp_init(struct nouveau_drm *drm)
+{
+#if __OS_HAS_AGP
+	struct nouveau_device *device = nv_device(drm->device);
+	struct drm_device *dev = drm->dev;
+	struct drm_agp_info info;
+	struct drm_agp_mode mode;
+	int ret;
+
+	if (!nouveau_agp_enabled(drm))
+		return;
+	drm->agp.stat = DISABLE;
+
+	ret = drm_agp_acquire(dev);
+	if (ret) {
+		nv_error(device, "unable to acquire AGP: %d\n", ret);
+		return;
+	}
+
+	ret = drm_agp_info(dev, &info);
+	if (ret) {
+		nv_error(device, "unable to get AGP info: %d\n", ret);
+		return;
+	}
+
+	/* see agp.h for the AGPSTAT_* modes available */
+	mode.mode = get_agp_mode(drm, info.mode);
+
+	ret = drm_agp_enable(dev, mode);
+	if (ret) {
+		nv_error(device, "unable to enable AGP: %d\n", ret);
+		return;
+	}
+
+	drm->agp.stat = ENABLED;
+	drm->agp.base = info.aperture_base;
+	drm->agp.size = info.aperture_size;
+#endif
+}
+
+void
+nouveau_agp_fini(struct nouveau_drm *drm)
+{
+#if __OS_HAS_AGP
+	struct drm_device *dev = drm->dev;
+	if (dev->agp && dev->agp->acquired)
+		drm_agp_release(dev);
+#endif
+}