From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- .../drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c | 271 +++++++++++++++++++++ 1 file changed, 271 insertions(+) create mode 100644 kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c (limited to 'kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c') diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c new file mode 100644 index 000000000..0ca9dcabb --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/base.c @@ -0,0 +1,271 @@ +/* + * 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 "mxms.h" + +#include +#include +#include +#include +#include + +static bool +mxm_shadow_rom_fetch(struct nvkm_i2c_port *i2c, 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(&i2c->adapter, msgs, 2) == 2; +} + +static bool +mxm_shadow_rom(struct nvkm_mxm *mxm, u8 version) +{ + struct nvkm_bios *bios = nvkm_bios(mxm); + struct nvkm_i2c *i2c = nvkm_i2c(mxm); + struct nvkm_i2c_port *port = NULL; + u8 i2cidx, mxms[6], addr, size; + + i2cidx = mxm_ddc_map(bios, 1 /* LVDS_DDC */) & 0x0f; + if (i2cidx < 0x0f) + port = i2c->find(i2c, i2cidx); + if (!port) + return false; + + addr = 0x54; + if (!mxm_shadow_rom_fetch(port, addr, 0, 6, mxms)) { + addr = 0x56; + if (!mxm_shadow_rom_fetch(port, 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(port, 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_device *device = nv_device(mxm); + static char muid[] = { + 0x00, 0xA4, 0x04, 0x40, 0x7D, 0x91, 0xF2, 0x4C, + 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(nv_device_base(device)); + 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) { + nv_debug(mxm, "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) { + nv_debug(mxm, "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) +{ + 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)) { + nv_debug(mxm, "WMMX MXMI returned %d\n", status); + return 0x00; + } + + obj = retn.pointer; + if (obj->type == ACPI_TYPE_INTEGER) { + version = obj->integer.value; + nv_debug(mxm, "WMMX MXMI version %d.%d\n", + (version >> 4), version & 0x0f); + } else { + version = 0; + nv_debug(mxm, "WMMX MXMI returned non-integer\n"); + } + + kfree(obj); + return version; +} + +static bool +mxm_shadow_wmi(struct nvkm_mxm *mxm, u8 version) +{ + 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)) { + nv_debug(mxm, "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)) { + nv_debug(mxm, "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 { + nv_debug(mxm, "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; +} + +int +nvkm_mxm_create_(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, int length, void **pobject) +{ + struct nvkm_device *device = nv_device(parent); + struct nvkm_bios *bios = nvkm_bios(device); + struct nvkm_mxm *mxm; + u8 ver, len; + u16 data; + int ret; + + ret = nvkm_subdev_create_(parent, engine, oclass, 0, "MXM", "mxm", + length, pobject); + mxm = *pobject; + if (ret) + return ret; + + data = mxm_table(bios, &ver, &len); + if (!data || !(ver = nv_ro08(bios, data))) { + nv_debug(mxm, "no VBIOS data, nothing to do\n"); + return 0; + } + + nv_info(mxm, "BIOS version %d.%d\n", ver >> 4, ver & 0x0f); + + if (mxm_shadow(mxm, ver)) { + nv_info(mxm, "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 + } + + nv_info(mxm, "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; +} -- cgit 1.2.3-korg