Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 232 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c
new file mode 100644
index 000000000..a7d42ea8b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c
@@ -0,0 +1,232 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+#include "agp.h"
+
+#include <core/option.h>
+#include <core/pci.h>
+#include <subdev/mc.h>
+
+u32
+nvkm_pci_rd32(struct nvkm_pci *pci, u16 addr)
+{
+	return pci->func->rd32(pci, addr);
+}
+
+void
+nvkm_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
+{
+	pci->func->wr08(pci, addr, data);
+}
+
+void
+nvkm_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
+{
+	pci->func->wr32(pci, addr, data);
+}
+
+u32
+nvkm_pci_mask(struct nvkm_pci *pci, u16 addr, u32 mask, u32 value)
+{
+	u32 data = pci->func->rd32(pci, addr);
+	pci->func->wr32(pci, addr, (data & ~mask) | value);
+	return data;
+}
+
+void
+nvkm_pci_rom_shadow(struct nvkm_pci *pci, bool shadow)
+{
+	u32 data = nvkm_pci_rd32(pci, 0x0050);
+	if (shadow)
+		data |=  0x00000001;
+	else
+		data &= ~0x00000001;
+	nvkm_pci_wr32(pci, 0x0050, data);
+}
+
+static irqreturn_t
+nvkm_pci_intr(int irq, void *arg)
+{
+	struct nvkm_pci *pci = arg;
+	struct nvkm_device *device = pci->subdev.device;
+	bool handled = false;
+
+	if (pci->irq < 0)
+		return IRQ_HANDLED;
+
+	nvkm_mc_intr_unarm(device);
+	if (pci->msi)
+		pci->func->msi_rearm(pci);
+	nvkm_mc_intr(device, &handled);
+	nvkm_mc_intr_rearm(device);
+	return handled ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static int
+nvkm_pci_fini(struct nvkm_subdev *subdev, bool suspend)
+{
+	struct nvkm_pci *pci = nvkm_pci(subdev);
+
+	if (pci->agp.bridge)
+		nvkm_agp_fini(pci);
+
+	return 0;
+}
+
+static int
+nvkm_pci_preinit(struct nvkm_subdev *subdev)
+{
+	struct nvkm_pci *pci = nvkm_pci(subdev);
+	if (pci->agp.bridge)
+		nvkm_agp_preinit(pci);
+	return 0;
+}
+
+static int
+nvkm_pci_oneinit(struct nvkm_subdev *subdev)
+{
+	struct nvkm_pci *pci = nvkm_pci(subdev);
+	struct pci_dev *pdev = pci->pdev;
+	int ret;
+
+	if (pci_is_pcie(pci->pdev)) {
+		ret = nvkm_pcie_oneinit(pci);
+		if (ret)
+			return ret;
+	}
+
+	ret = request_irq(pdev->irq, nvkm_pci_intr, IRQF_SHARED, "nvkm", pci);
+	if (ret)
+		return ret;
+
+	pci->irq = pdev->irq;
+	return 0;
+}
+
+static int
+nvkm_pci_init(struct nvkm_subdev *subdev)
+{
+	struct nvkm_pci *pci = nvkm_pci(subdev);
+	int ret;
+
+	if (pci->agp.bridge) {
+		ret = nvkm_agp_init(pci);
+		if (ret)
+			return ret;
+	} else if (pci_is_pcie(pci->pdev)) {
+		nvkm_pcie_init(pci);
+	}
+
+	if (pci->func->init)
+		pci->func->init(pci);
+
+	/* Ensure MSI interrupts are armed, for the case where there are
+	 * already interrupts pending (for whatever reason) at load time.
+	 */
+	if (pci->msi)
+		pci->func->msi_rearm(pci);
+
+	return 0;
+}
+
+static void *
+nvkm_pci_dtor(struct nvkm_subdev *subdev)
+{
+	struct nvkm_pci *pci = nvkm_pci(subdev);
+
+	nvkm_agp_dtor(pci);
+
+	if (pci->irq >= 0) {
+		/* freq_irq() will call the handler, we use pci->irq == -1
+		 * to signal that it's been torn down and should be a noop.
+		 */
+		int irq = pci->irq;
+		pci->irq = -1;
+		free_irq(irq, pci);
+	}
+
+	if (pci->msi)
+		pci_disable_msi(pci->pdev);
+
+	return nvkm_pci(subdev);
+}
+
+static const struct nvkm_subdev_func
+nvkm_pci_func = {
+	.dtor = nvkm_pci_dtor,
+	.oneinit = nvkm_pci_oneinit,
+	.preinit = nvkm_pci_preinit,
+	.init = nvkm_pci_init,
+	.fini = nvkm_pci_fini,
+};
+
+int
+nvkm_pci_new_(const struct nvkm_pci_func *func, struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_pci **ppci)
+{
+	struct nvkm_pci *pci;
+
+	if (!(pci = *ppci = kzalloc(sizeof(**ppci), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&nvkm_pci_func, device, type, inst, &pci->subdev);
+	pci->func = func;
+	pci->pdev = device->func->pci(device)->pdev;
+	pci->irq = -1;
+	pci->pcie.speed = -1;
+	pci->pcie.width = -1;
+
+	if (device->type == NVKM_DEVICE_AGP)
+		nvkm_agp_ctor(pci);
+
+	switch (pci->pdev->device & 0x0ff0) {
+	case 0x00f0:
+	case 0x02e0:
+		/* BR02? NFI how these would be handled yet exactly */
+		break;
+	default:
+		switch (device->chipset) {
+		case 0xaa:
+			/* reported broken, nv also disable it */
+			break;
+		default:
+			pci->msi = true;
+			break;
+		}
+	}
+
+#ifdef __BIG_ENDIAN
+	pci->msi = false;
+#endif
+
+	pci->msi = nvkm_boolopt(device->cfgopt, "NvMSI", pci->msi);
+	if (pci->msi && func->msi_rearm) {
+		pci->msi = pci_enable_msi(pci->pdev) == 0;
+		if (pci->msi)
+			nvkm_debug(&pci->subdev, "MSI enabled\n");
+	} else {
+		pci->msi = false;
+	}
+
+	return 0;
+}