File: [cvs.NetBSD.org] / src / sys / external / bsd / drm2 / dist / drm / nouveau / nvkm / subdev / mxm / nouveau_nvkm_subdev_mxm_base.c (download)
Revision 1.1.1.2 (vendor branch), Sat Dec 18 20:15:42 2021 UTC (2 years, 3 months ago) by riastradh
Branch: LINUX
CVS Tags: linux-drm-v5-6-rc3 Changes since 1.1.1.1: +9 -6
lines
Import drm from Linux v5.6-rc3 (commit f8788d86ab28f61f7b46eb6be375f8a726783636)
drivers/gpu/drm -> sys/external/bsd/drm2/dist/drm
include/drm -> sys/external/bsd/drm2/dist/include/drm
include/uapi/drm -> sys/external/bsd/drm2/dist/include/uapi/drm
GPL exclusions in dist/drm:
- amd/amdgpu/amdgpu_atpx_handler.c
- arc/
- arm/
- armada/
- aspeed/
- atmel-hlcdc/
- bochs/
- bridge/
- cirrus/
- drm_dp_cec.c
- drm_dp_mst_topology_internal.h
- drm_edid_load.c
- drm_format_helper.c
- drm_gem_cma_helper.c
- drm_gem_framebuffer_helper.c
- drm_gem_shmem_helper.c
- drm_gem_ttm_helper.c
- drm_gem_vram_helper.c
- drm_hdcp.c
- drm_lease.c
- drm_mipi_dbi.c
- drm_simple_kms_helper.c
- drm_sysfs.c
- drm_trace.h
- drm_vram_helper_common.c
- drm_writeback.c
- etnaviv/
- exynos/
- fsl-dcu/
- gma500/
- hisilicon/
- i2c/tda9950.c
- i2c/tda998x_drv.c
- i915/gt/selftest_context.c
- i915/gt/selftest_engine.c
- i915/gt/selftest_engine.h
- i915/gt/selftest_engine_cs.c
- i915/gt/selftest_engine_pm.c
- i915/i915_trace.h
- i915/selftests/i915_live_selftests.h
- i915/selftests/i915_mock_selftests.h
- i915/selftests/i915_perf_selftests.h
- i915/selftests/lib_sw_fence.h
- imx/
- ingenic/
- lima/
- mcde/
- mediatek/
- meson/
- mgag200/
- msm/
- mxsfb/
- omapdrm/
- panel/
- panfrost/
- pl111/
- radeon/radeon_atpx_handler.c
- rcar-du/
- rockchip/
- selftests/drm_cmdline_selftests.h
- selftests/drm_modeset_selftests.h
- selftests/test-drm_cmdline_parser.c
- selftests/test-drm_damage_helper.c
- selftests/test-drm_dp_mst_helper.c
- selftests/test-drm_format.c
- selftests/test-drm_framebuffer.c
- selftests/test-drm_modeset_common.c
- selftests/test-drm_modeset_common.h
- selftests/test-drm_plane_helper.c
- selftests/test-drm_rect.c
- shmobile/
- sti/
- stm/
- sun4i/
- tegra/
- tilcdc/
- tiny/
- tve200/
- udl/
- v3d/
- vc4/
- virtio/virtgpu_trace.h
- virtio/virtgpu_trace_points.c
- vkms/
- vmwgfx/device_include/vmware_pack_begin.h
- vmwgfx/device_include/vmware_pack_end.h
- zte/
Exceptions -- these all appear to be files to which someone added
an SPDX license header automatically by a script that is not aware
of the default MIT licensing under drivers/gpu/drm:
- ast/ast_dp501.c
- ast/ast_dram_tables.h
- lib/drm_random.c
- lib/drm_random.h
- i915/display/intel_acpi.c
- i915/selftests/mock_gem_device.h
- i915/selftests/i915_mock_selftests.h
- i915/selftests/i915_live_selftests.h
- r128/ati_pcigart.h
- selftests/drm_mm_selftests.h
- selftests/test-drm_mm.c
- vmwgfx/device_include/vm_basic_types.h
GPL exclusions in dist/include/drm:
- bridge
- drm_client.h
- drm_fb_cma_helper.h
- drm_format_helper.h
- drm_gem_cma_helper.h
- drm_gem_shmem_helper.h
- drm_gem_ttm_helper.h
- drm_gem_vram_helper.h
- drm_lease.h
- drm_mipi_dbi.h
- drm_mipi_dsi.h
- drm_of.h
- drm_simple_kms_helper.h
- drm_sysfs.h
- drm_writeback.h
- gma_drm.h
- i2c/tda998x.h
- i915_mei_hdcp_interface.h
- intel-gtt.h
Exceptions:
- drm_agpsupport.h - was in original drm; wrong spdx header auto-added
GPL exclusions in dist/include/uapi/drm:
- armada_drm.h
- etnaviv_drm.h
- exynos_drm.h
- lima_drm.h
- omap_drm.h
Exceptions:
- i810_drm.h - was in original drm; spdx header is wrong
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/* $NetBSD: nouveau_nvkm_subdev_mxm_base.c,v 1.1.1.2 2021/12/18 20:15:42 riastradh Exp $ */
/*
* Copyright 2011 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
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_mxm_base.c,v 1.1.1.2 2021/12/18 20:15:42 riastradh Exp $");
#include "mxms.h"
#include <core/option.h>
#include <subdev/bios.h>
#include <subdev/bios/mxm.h>
#include <subdev/i2c.h>
static bool
mxm_shadow_rom_fetch(struct nvkm_i2c_bus *bus, u8 addr,
u8 offset, u8 size, u8 *data)
{
struct i2c_msg msgs[] = {
{ .addr = addr, .flags = 0, .len = 1, .buf = &offset },
{ .addr = addr, .flags = I2C_M_RD, .len = size, .buf = data, },
};
return i2c_transfer(&bus->i2c, msgs, 2) == 2;
}
static bool
mxm_shadow_rom(struct nvkm_mxm *mxm, u8 version)
{
struct nvkm_device *device = mxm->subdev.device;
struct nvkm_bios *bios = device->bios;
struct nvkm_i2c *i2c = device->i2c;
struct nvkm_i2c_bus *bus = NULL;
u8 i2cidx, mxms[6], addr, size;
i2cidx = mxm_ddc_map(bios, 1 /* LVDS_DDC */) & 0x0f;
if (i2cidx < 0x0f)
bus = nvkm_i2c_bus_find(i2c, i2cidx);
if (!bus)
return false;
addr = 0x54;
if (!mxm_shadow_rom_fetch(bus, addr, 0, 6, mxms)) {
addr = 0x56;
if (!mxm_shadow_rom_fetch(bus, addr, 0, 6, mxms))
return false;
}
mxm->mxms = mxms;
size = mxms_headerlen(mxm) + mxms_structlen(mxm);
mxm->mxms = kmalloc(size, GFP_KERNEL);
if (mxm->mxms &&
mxm_shadow_rom_fetch(bus, addr, 0, size, mxm->mxms))
return true;
kfree(mxm->mxms);
mxm->mxms = NULL;
return false;
}
#if defined(CONFIG_ACPI)
static bool
mxm_shadow_dsm(struct nvkm_mxm *mxm, u8 version)
{
struct nvkm_subdev *subdev = &mxm->subdev;
struct nvkm_device *device = subdev->device;
static guid_t muid =
GUID_INIT(0x4004A400, 0x917D, 0x4CF2,
0xB8, 0x9C, 0x79, 0xB6, 0x2F, 0xD5, 0x56, 0x65);
u32 mxms_args[] = { 0x00000000 };
union acpi_object argv4 = {
.buffer.type = ACPI_TYPE_BUFFER,
.buffer.length = sizeof(mxms_args),
.buffer.pointer = (char *)mxms_args,
};
union acpi_object *obj;
acpi_handle handle;
int rev;
handle = ACPI_HANDLE(device->dev);
if (!handle)
return false;
/*
* spec says this can be zero to mean "highest revision", but
* of course there's at least one bios out there which fails
* unless you pass in exactly the version it supports..
*/
rev = (version & 0xf0) << 4 | (version & 0x0f);
obj = acpi_evaluate_dsm(handle, &muid, rev, 0x00000010, &argv4);
if (!obj) {
nvkm_debug(subdev, "DSM MXMS failed\n");
return false;
}
if (obj->type == ACPI_TYPE_BUFFER) {
mxm->mxms = kmemdup(obj->buffer.pointer,
obj->buffer.length, GFP_KERNEL);
} else if (obj->type == ACPI_TYPE_INTEGER) {
nvkm_debug(subdev, "DSM MXMS returned 0x%llx\n",
obj->integer.value);
}
ACPI_FREE(obj);
return mxm->mxms != NULL;
}
#endif
#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
#define WMI_WMMX_GUID "F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0"
static u8
wmi_wmmx_mxmi(struct nvkm_mxm *mxm, u8 version)
{
struct nvkm_subdev *subdev = &mxm->subdev;
u32 mxmi_args[] = { 0x494D584D /* MXMI */, version, 0 };
struct acpi_buffer args = { sizeof(mxmi_args), mxmi_args };
struct acpi_buffer retn = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
acpi_status status;
status = wmi_evaluate_method(WMI_WMMX_GUID, 0, 0, &args, &retn);
if (ACPI_FAILURE(status)) {
nvkm_debug(subdev, "WMMX MXMI returned %d\n", status);
return 0x00;
}
obj = retn.pointer;
if (obj->type == ACPI_TYPE_INTEGER) {
version = obj->integer.value;
nvkm_debug(subdev, "WMMX MXMI version %d.%d\n",
(version >> 4), version & 0x0f);
} else {
version = 0;
nvkm_debug(subdev, "WMMX MXMI returned non-integer\n");
}
kfree(obj);
return version;
}
static bool
mxm_shadow_wmi(struct nvkm_mxm *mxm, u8 version)
{
struct nvkm_subdev *subdev = &mxm->subdev;
u32 mxms_args[] = { 0x534D584D /* MXMS */, version, 0 };
struct acpi_buffer args = { sizeof(mxms_args), mxms_args };
struct acpi_buffer retn = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
acpi_status status;
if (!wmi_has_guid(WMI_WMMX_GUID)) {
nvkm_debug(subdev, "WMMX GUID not found\n");
return false;
}
mxms_args[1] = wmi_wmmx_mxmi(mxm, 0x00);
if (!mxms_args[1])
mxms_args[1] = wmi_wmmx_mxmi(mxm, version);
if (!mxms_args[1])
return false;
status = wmi_evaluate_method(WMI_WMMX_GUID, 0, 0, &args, &retn);
if (ACPI_FAILURE(status)) {
nvkm_debug(subdev, "WMMX MXMS returned %d\n", status);
return false;
}
obj = retn.pointer;
if (obj->type == ACPI_TYPE_BUFFER) {
mxm->mxms = kmemdup(obj->buffer.pointer,
obj->buffer.length, GFP_KERNEL);
}
kfree(obj);
return mxm->mxms != NULL;
}
#endif
static struct mxm_shadow_h {
const char *name;
bool (*exec)(struct nvkm_mxm *, u8 version);
} _mxm_shadow[] = {
{ "ROM", mxm_shadow_rom },
#if defined(CONFIG_ACPI)
{ "DSM", mxm_shadow_dsm },
#endif
#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
{ "WMI", mxm_shadow_wmi },
#endif
{}
};
static int
mxm_shadow(struct nvkm_mxm *mxm, u8 version)
{
struct mxm_shadow_h *shadow = _mxm_shadow;
do {
nvkm_debug(&mxm->subdev, "checking %s\n", shadow->name);
if (shadow->exec(mxm, version)) {
if (mxms_valid(mxm))
return 0;
kfree(mxm->mxms);
mxm->mxms = NULL;
}
} while ((++shadow)->name);
return -ENOENT;
}
static const struct nvkm_subdev_func
nvkm_mxm = {
};
int
nvkm_mxm_new_(struct nvkm_device *device, int index, struct nvkm_mxm **pmxm)
{
struct nvkm_bios *bios = device->bios;
struct nvkm_mxm *mxm;
u8 ver, len;
u16 data;
if (!(mxm = *pmxm = kzalloc(sizeof(*mxm), GFP_KERNEL)))
return -ENOMEM;
nvkm_subdev_ctor(&nvkm_mxm, device, index, &mxm->subdev);
data = mxm_table(bios, &ver, &len);
if (!data || !(ver = nvbios_rd08(bios, data))) {
nvkm_debug(&mxm->subdev, "no VBIOS data, nothing to do\n");
return 0;
}
nvkm_info(&mxm->subdev, "BIOS version %d.%d\n", ver >> 4, ver & 0x0f);
nvkm_debug(&mxm->subdev, "module flags: %02x\n",
nvbios_rd08(bios, data + 0x01));
nvkm_debug(&mxm->subdev, "config flags: %02x\n",
nvbios_rd08(bios, data + 0x02));
if (mxm_shadow(mxm, ver)) {
nvkm_warn(&mxm->subdev, "failed to locate valid SIS\n");
#if 0
/* we should, perhaps, fall back to some kind of limited
* mode here if the x86 vbios hasn't already done the
* work for us (so we prevent loading with completely
* whacked vbios tables).
*/
return -EINVAL;
#else
return 0;
#endif
}
nvkm_debug(&mxm->subdev, "MXMS Version %d.%d\n",
mxms_version(mxm) >> 8, mxms_version(mxm) & 0xff);
mxms_foreach(mxm, 0, NULL, NULL);
if (nvkm_boolopt(device->cfgopt, "NvMXMDCB", true))
mxm->action |= MXM_SANITISE_DCB;
return 0;
}