[deliverable/linux.git] / drivers / gpu / drm / nouveau / nvkm / engine / device / pci.c

/*
 * 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 <core/pci.h>
#include "priv.h"

static struct nvkm_device_pci *
nvkm_device_pci(struct nvkm_device *device)
{
	return container_of(device, struct nvkm_device_pci, device);
}

static resource_size_t
nvkm_device_pci_resource_addr(struct nvkm_device *device, unsigned bar)
{
	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	return pci_resource_start(pdev->pdev, bar);
}

static resource_size_t
nvkm_device_pci_resource_size(struct nvkm_device *device, unsigned bar)
{
	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	return pci_resource_len(pdev->pdev, bar);
}

static void
nvkm_device_pci_fini(struct nvkm_device *device, bool suspend)
{
	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	if (suspend) {
		pci_disable_device(pdev->pdev);
		pdev->suspend = true;
	}
}

static int
nvkm_device_pci_preinit(struct nvkm_device *device)
{
	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	if (pdev->suspend) {
		int ret = pci_enable_device(pdev->pdev);
		if (ret)
			return ret;
		pci_set_master(pdev->pdev);
		pdev->suspend = false;
	}
	return 0;
}

static void *
nvkm_device_pci_dtor(struct nvkm_device *device)
{
	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	pci_disable_device(pdev->pdev);
	return pdev;
}

static const struct nvkm_device_func
nvkm_device_pci_func = {
	.pci = nvkm_device_pci,
	.dtor = nvkm_device_pci_dtor,
	.preinit = nvkm_device_pci_preinit,
	.fini = nvkm_device_pci_fini,
	.resource_addr = nvkm_device_pci_resource_addr,
	.resource_size = nvkm_device_pci_resource_size,
};

int
nvkm_device_pci_new(struct pci_dev *pci_dev, const char *cfg, const char *dbg,
		    bool detect, bool mmio, u64 subdev_mask,
		    struct nvkm_device **pdevice)
{
	struct nvkm_device_pci *pdev;
	int ret;

	ret = pci_enable_device(pci_dev);
	if (ret)
		return ret;

	if (!(pdev = kzalloc(sizeof(*pdev), GFP_KERNEL))) {
		pci_disable_device(pci_dev);
		return -ENOMEM;
	}
	*pdevice = &pdev->device;
	pdev->pdev = pci_dev;

	return nvkm_device_ctor(&nvkm_device_pci_func, NULL,
				pci_dev, NVKM_BUS_PCI,
				(u64)pci_domain_nr(pci_dev->bus) << 32 |
				     pci_dev->bus->number << 16 |
				     PCI_SLOT(pci_dev->devfn) << 8 |
				     PCI_FUNC(pci_dev->devfn), NULL,
				cfg, dbg, detect, mmio, subdev_mask,
				&pdev->device);
}
Commit	Line	Data
7974dd1b BS	1	/*
	2	* Copyright 2015 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Ben Skeggs <bskeggs@redhat.com>
	23	*/
	24	#include <core/pci.h>
	25	#include "priv.h"
	26
	27	static struct nvkm_device_pci *
	28	nvkm_device_pci(struct nvkm_device *device)
	29	{
	30	return container_of(device, struct nvkm_device_pci, device);
	31	}
	32
7e8820fe BS	33	static resource_size_t
	34	nvkm_device_pci_resource_addr(struct nvkm_device *device, unsigned bar)
	35	{
	36	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	37	return pci_resource_start(pdev->pdev, bar);
	38	}
	39
	40	static resource_size_t
	41	nvkm_device_pci_resource_size(struct nvkm_device *device, unsigned bar)
	42	{
	43	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	44	return pci_resource_len(pdev->pdev, bar);
	45	}
	46
7974dd1b BS	47	static void
	48	nvkm_device_pci_fini(struct nvkm_device *device, bool suspend)
	49	{
	50	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	51	if (suspend) {
	52	pci_disable_device(pdev->pdev);
	53	pdev->suspend = true;
	54	}
	55	}
	56
	57	static int
	58	nvkm_device_pci_preinit(struct nvkm_device *device)
	59	{
	60	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	61	if (pdev->suspend) {
	62	int ret = pci_enable_device(pdev->pdev);
	63	if (ret)
	64	return ret;
	65	pci_set_master(pdev->pdev);
	66	pdev->suspend = false;
	67	}
	68	return 0;
	69	}
	70
	71	static void *
	72	nvkm_device_pci_dtor(struct nvkm_device *device)
	73	{
	74	struct nvkm_device_pci *pdev = nvkm_device_pci(device);
	75	pci_disable_device(pdev->pdev);
	76	return pdev;
	77	}
	78
	79	static const struct nvkm_device_func
	80	nvkm_device_pci_func = {
	81	.pci = nvkm_device_pci,
	82	.dtor = nvkm_device_pci_dtor,
	83	.preinit = nvkm_device_pci_preinit,
	84	.fini = nvkm_device_pci_fini,
7e8820fe BS	85	.resource_addr = nvkm_device_pci_resource_addr,
7e8820fe BS	86	.resource_size = nvkm_device_pci_resource_size,
7974dd1b BS	87	};
	88
	89	int
	90	nvkm_device_pci_new(struct pci_dev pci_dev, const char cfg, const char *dbg,
	91	bool detect, bool mmio, u64 subdev_mask,
	92	struct nvkm_device **pdevice)
	93	{
	94	struct nvkm_device_pci *pdev;
	95	int ret;
	96
	97	ret = pci_enable_device(pci_dev);
	98	if (ret)
	99	return ret;
	100
	101	if (!(pdev = kzalloc(sizeof(*pdev), GFP_KERNEL))) {
	102	pci_disable_device(pci_dev);
	103	return -ENOMEM;
	104	}
	105	*pdevice = &pdev->device;
	106	pdev->pdev = pci_dev;
	107
	108	return nvkm_device_ctor(&nvkm_device_pci_func, NULL,
	109	pci_dev, NVKM_BUS_PCI,
	110	(u64)pci_domain_nr(pci_dev->bus) << 32 \|
	111	pci_dev->bus->number << 16 \|
	112	PCI_SLOT(pci_dev->devfn) << 8 \|
	113	PCI_FUNC(pci_dev->devfn), NULL,
	114	cfg, dbg, detect, mmio, subdev_mask,
	115	&pdev->device);
	116	}