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fuchsia / fuchsia / 28241e21ff35ca05198849eef9d4a015842b0f4b / . / src / graphics / display / drivers / intel-i915 / intel-i915.cc
blob: 68e437b6ee25f6262f8594e1f36c57422b525427 [file] [log] [blame]
// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "intel-i915.h"
#include <assert.h>
#include <fuchsia/hardware/intelgpucore/c/banjo.h>
#include <fuchsia/hardware/pci/c/banjo.h>
#include <fuchsia/hardware/sysmem/c/banjo.h>
#include <fuchsia/sysmem/c/fidl.h>
#include <inttypes.h>
#include <lib/ddk/device.h>
#include <lib/ddk/driver.h>
#include <lib/device-protocol/pci.h>
#include <lib/ddk/hw/inout.h>
#include <lib/image-format/image_format.h>
#include <lib/zx/vmar.h>
#include <lib/zx/vmo.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <zircon/syscalls.h>
#include <zircon/types.h>
#include <algorithm>
#include <iterator>
#include <memory>
#include <utility>
#include <fbl/vector.h>
#include "dp-display.h"
#include "hdmi-display.h"
#include "macros.h"
#include "pci-ids.h"
#include "registers-ddi.h"
#include "registers-dpll.h"
#include "registers-pipe.h"
#include "registers-transcoder.h"
#include "registers.h"
#include "src/graphics/display/drivers/intel-i915/intel-i915-bind.h"
#include "tiling.h"
#define INTEL_I915_BROADWELL_DID (0x1616)
#define INTEL_I915_REG_WINDOW_SIZE (0x1000000u)
#define INTEL_I915_FB_WINDOW_SIZE (0x10000000u)
#define BACKLIGHT_CTRL_OFFSET (0xc8250)
#define BACKLIGHT_CTRL_BIT ((uint32_t)(1u << 31))
#define FLAGS_BACKLIGHT 1
namespace {
static zx_pixel_format_t supported_formats[4] = {
ZX_PIXEL_FORMAT_ARGB_8888, ZX_PIXEL_FORMAT_RGB_x888, ZX_PIXEL_FORMAT_ABGR_8888,
ZX_PIXEL_FORMAT_BGR_888x};
static cursor_info_t cursor_infos[3] = {
{.width = 64, .height = 64, .format = ZX_PIXEL_FORMAT_ARGB_8888},
{.width = 128, .height = 128, .format = ZX_PIXEL_FORMAT_ARGB_8888},
{.width = 256, .height = 256, .format = ZX_PIXEL_FORMAT_ARGB_8888},
};
static uint32_t image_types[4] = {
IMAGE_TYPE_SIMPLE,
IMAGE_TYPE_X_TILED,
IMAGE_TYPE_Y_LEGACY_TILED,
IMAGE_TYPE_YF_TILED,
};
static zx_status_t read_pci_config_16(void* ctx, uint16_t addr, uint16_t* value_out) {
return static_cast<i915::Controller*>(ctx)->ReadPciConfig16(addr, value_out);
}
static zx_status_t map_pci_mmio(void* ctx, uint32_t pci_bar, uint8_t** addr_out,
uint64_t* size_out) {
return static_cast<i915::Controller*>(ctx)->MapPciMmio(pci_bar, addr_out, size_out);
}
static zx_status_t unmap_pci_mmio(void* ctx, uint32_t pci_bar) {
return static_cast<i915::Controller*>(ctx)->UnmapPciMmio(pci_bar);
}
static zx_status_t get_pci_bti(void* ctx, uint32_t index, zx_handle_t* bti_out) {
return static_cast<i915::Controller*>(ctx)->GetPciBti(index, bti_out);
}
static zx_status_t register_interrupt_callback(void* ctx,
const zx_intel_gpu_core_interrupt_t* callback,
uint32_t interrupt_mask) {
return static_cast<i915::Controller*>(ctx)->RegisterInterruptCallback(callback, interrupt_mask);
}
static zx_status_t unregister_interrupt_callback(void* ctx) {
return static_cast<i915::Controller*>(ctx)->UnregisterInterruptCallback();
}
static uint64_t gtt_get_size(void* ctx) {
return static_cast<i915::Controller*>(ctx)->GttGetSize();
}
static zx_status_t gtt_alloc(void* ctx, uint64_t page_count, uint64_t* addr_out) {
return static_cast<i915::Controller*>(ctx)->GttAlloc(page_count, addr_out);
}
static zx_status_t gtt_free(void* ctx, uint64_t addr) {
return static_cast<i915::Controller*>(ctx)->GttFree(addr);
}
static zx_status_t gtt_clear(void* ctx, uint64_t addr) {
return static_cast<i915::Controller*>(ctx)->GttClear(addr);
}
static zx_status_t gtt_insert(void* ctx, uint64_t addr, zx_handle_t buffer, uint64_t page_offset,
uint64_t page_count) {
return static_cast<i915::Controller*>(ctx)->GttInsert(addr, buffer, page_offset, page_count);
}
static zx_intel_gpu_core_protocol_ops_t i915_gpu_core_protocol_ops = {
.read_pci_config16 = read_pci_config_16,
.map_pci_mmio = map_pci_mmio,
.unmap_pci_mmio = unmap_pci_mmio,
.get_pci_bti = get_pci_bti,
.register_interrupt_callback = register_interrupt_callback,
.unregister_interrupt_callback = unregister_interrupt_callback,
.gtt_get_size = gtt_get_size,
.gtt_alloc = gtt_alloc,
.gtt_free = gtt_free,
.gtt_clear = gtt_clear,
.gtt_insert = gtt_insert};
static void gpu_release(void* ctx) { static_cast<i915::Controller*>(ctx)->GpuRelease(); }
static zx_protocol_device_t i915_gpu_core_device_proto = {};
static uint32_t get_bus_count(void* ctx) {
return static_cast<i915::Controller*>(ctx)->GetBusCount();
}
static zx_status_t get_max_transfer_size(void* ctx, uint32_t bus_id, size_t* out_size) {
return static_cast<i915::Controller*>(ctx)->GetMaxTransferSize(bus_id, out_size);
}
static zx_status_t set_bitrate(void* ctx, uint32_t bus_id, uint32_t bitrate) {
return static_cast<i915::Controller*>(ctx)->SetBitrate(bus_id, bitrate);
}
static zx_status_t transact(void* ctx, uint32_t bus_id, const i2c_impl_op_t* ops, size_t count) {
return static_cast<i915::Controller*>(ctx)->Transact(bus_id, ops, count);
}
static i2c_impl_protocol_ops_t i2c_ops = {
.get_bus_count = get_bus_count,
.get_max_transfer_size = get_max_transfer_size,
.set_bitrate = set_bitrate,
.transact = transact,
};
static int finish_init(void* arg) {
static_cast<i915::Controller*>(arg)->FinishInit();
return 0;
}
const display_config_t* find_config(uint64_t display_id, const display_config_t** display_configs,
size_t display_count) {
for (size_t i = 0; i < display_count; i++) {
if (display_configs[i]->display_id == display_id) {
return display_configs[i];
}
}
return nullptr;
}
static void get_posttransform_width(const layer_t& layer, uint32_t* width, uint32_t* height) {
const primary_layer_t* primary = &layer.cfg.primary;
if (primary->transform_mode == FRAME_TRANSFORM_IDENTITY ||
primary->transform_mode == FRAME_TRANSFORM_ROT_180 ||
primary->transform_mode == FRAME_TRANSFORM_REFLECT_X ||
primary->transform_mode == FRAME_TRANSFORM_REFLECT_Y) {
*width = primary->src_frame.width;
*height = primary->src_frame.height;
} else {
*width = primary->src_frame.height;
*height = primary->src_frame.width;
}
}
} // namespace
namespace i915 {
bool Controller::CompareDpllStates(const dpll_state_t& a, const dpll_state_t& b) {
if (a.is_hdmi != b.is_hdmi) {
return false;
}
if (a.is_hdmi) {
return a.hdmi.dco_int == b.hdmi.dco_int && a.hdmi.dco_frac == b.hdmi.dco_frac &&
a.hdmi.q == b.hdmi.q && a.hdmi.q_mode == b.hdmi.q_mode && a.hdmi.k == b.hdmi.k &&
a.hdmi.p == b.hdmi.p && a.hdmi.cf == b.hdmi.cf;
}
return a.dp_rate == b.dp_rate;
}
void Controller::EnableBacklight(bool enable) {
if (flags_ & FLAGS_BACKLIGHT) {
uint32_t tmp = mmio_space()->Read32(BACKLIGHT_CTRL_OFFSET);
if (enable) {
tmp |= BACKLIGHT_CTRL_BIT;
} else {
tmp &= ~BACKLIGHT_CTRL_BIT;
}
mmio_space()->Write32(BACKLIGHT_CTRL_OFFSET, tmp);
}
}
void Controller::HandleHotplug(registers::Ddi ddi, bool long_pulse) {
zxlogf(TRACE, "Hotplug detected on ddi %d (long_pulse=%d)", ddi, long_pulse);
std::unique_ptr<DisplayDevice> device = nullptr;
DisplayDevice* added_device = nullptr;
uint64_t display_removed = INVALID_DISPLAY_ID;
fbl::AutoLock lock(&display_lock_);
for (size_t i = 0; i < display_devices_.size(); i++) {
if (display_devices_[i]->ddi() == ddi) {
if (display_devices_[i]->HandleHotplug(long_pulse)) {
zxlogf(DEBUG, "hotplug handled by device");
return;
}
device = display_devices_.erase(i);
break;
}
}
if (device) { // Existing device was unplugged
zxlogf(INFO, "Display %ld unplugged", device->id());
display_removed = device->id();
RemoveDisplay(std::move(device));
} else { // New device was plugged in
std::unique_ptr<DisplayDevice> device = QueryDisplay(ddi);
if (!device || !device->Init()) {
zxlogf(INFO, "failed to init hotplug display");
} else {
DisplayDevice* device_ptr = device.get();
if (AddDisplay(std::move(device)) == ZX_OK) {
added_device = device_ptr;
}
}
}
if (dc_intf_.is_valid() && (added_device || display_removed != INVALID_DISPLAY_ID)) {
CallOnDisplaysChanged(&added_device, added_device != nullptr ? 1 : 0, &display_removed,
display_removed != INVALID_DISPLAY_ID);
}
}
void Controller::HandlePipeVsync(registers::Pipe pipe, zx_time_t timestamp) {
fbl::AutoLock lock(&display_lock_);
if (!dc_intf_.is_valid()) {
return;
}
uint64_t id = INVALID_DISPLAY_ID;
// Plane 3 and the cursor are mutually exclusive, so this won't overflow.
uint64_t handles[3];
size_t handle_count = 0;
if (pipes_[pipe].in_use()) {
id = pipes_[pipe].attached_display_id();
registers::PipeRegs regs(pipe);
for (int i = 0; i < 3; i++) {
auto live_surface = regs.PlaneSurfaceLive(i).ReadFrom(mmio_space());
uint64_t handle = live_surface.surface_base_addr() << live_surface.kPageShift;
if (handle) {
handles[handle_count++] = handle;
}
}
auto live_surface = regs.CursorSurfaceLive().ReadFrom(mmio_space());
uint64_t handle = live_surface.surface_base_addr() << live_surface.kPageShift;
if (handle) {
handles[handle_count++] = handle;
}
}
if (id != INVALID_DISPLAY_ID && handle_count) {
dc_intf_.OnDisplayVsync(id, timestamp, handles, handle_count);
}
}
DisplayDevice* Controller::FindDevice(uint64_t display_id) {
for (auto& d : display_devices_) {
if (d->id() == display_id) {
return d.get();
}
}
return nullptr;
}
bool Controller::BringUpDisplayEngine(bool resume) {
// Enable PCH Reset Handshake
auto nde_rstwrn_opt = registers::NorthDERestetWarning::Get().ReadFrom(mmio_space());
nde_rstwrn_opt.set_rst_pch_handshake_enable(1);
nde_rstwrn_opt.WriteTo(mmio_space());
// Wait for Power Well 0 distribution
if (!WAIT_ON_US(registers::FuseStatus::Get().ReadFrom(mmio_space()).pg0_dist_status(), 5)) {
zxlogf(ERROR, "Power Well 0 distribution failed");
return false;
}
if (resume) {
power_.Resume();
} else {
cd_clk_power_well_ = power_.GetCdClockPowerWellRef();
}
// Enable CDCLK PLL to 337.5mhz if the BIOS didn't already enable it. If it needs to be
// something special (i.e. for eDP), assume that the BIOS already enabled it.
auto dpll_enable = registers::DpllEnable::Get(registers::DPLL_0).ReadFrom(mmio_space());
if (!dpll_enable.enable_dpll()) {
// Set the cd_clk frequency to the minimum
auto cd_clk = registers::CdClockCtl::Get().ReadFrom(mmio_space());
cd_clk.set_cd_freq_select(cd_clk.kFreqSelect3XX);
cd_clk.set_cd_freq_decimal(cd_clk.kFreqDecimal3375);
cd_clk.WriteTo(mmio_space());
// Configure DPLL0
auto dpll_ctl1 = registers::DpllControl1::Get().ReadFrom(mmio_space());
dpll_ctl1.dpll_link_rate(registers::DPLL_0).set(dpll_ctl1.kLinkRate810Mhz);
dpll_ctl1.dpll_override(registers::DPLL_0).set(1);
dpll_ctl1.dpll_hdmi_mode(registers::DPLL_0).set(0);
dpll_ctl1.dpll_ssc_enable(registers::DPLL_0).set(0);
dpll_ctl1.WriteTo(mmio_space());
// Enable DPLL0 and wait for it
dpll_enable.set_enable_dpll(1);
dpll_enable.WriteTo(mmio_space());
if (!WAIT_ON_MS(registers::Lcpll1Control::Get().ReadFrom(mmio_space()).pll_lock(), 5)) {
zxlogf(ERROR, "Failed to configure dpll0");
return false;
}
// Do the magic sequence for Changing CD Clock Frequency specified on
// intel-gfx-prm-osrc-skl-vol12-display.pdf p.135
constexpr uint32_t kGtDriverMailboxInterface = 0x138124;
constexpr uint32_t kGtDriverMailboxData0 = 0x138128;
constexpr uint32_t kGtDriverMailboxData1 = 0x13812c;
mmio_space()->Write32(kGtDriverMailboxData0, 0x3);
mmio_space()->Write32(kGtDriverMailboxData1, 0x0);
mmio_space()->Write32(kGtDriverMailboxInterface, 0x80000007);
int count = 0;
for (;;) {
if (!WAIT_ON_US(mmio_space()->Read32(kGtDriverMailboxInterface) & 0x80000000, 150)) {
zxlogf(ERROR, "GT Driver Mailbox driver busy");
return false;
}
if (mmio_space()->Read32(kGtDriverMailboxData0) & 0x1) {
break;
}
if (count++ == 3) {
zxlogf(ERROR, "Failed to set cd_clk");
return false;
}
zx_nanosleep(zx_deadline_after(ZX_MSEC(1)));
}
cd_clk.WriteTo(mmio_space());
mmio_space()->Write32(kGtDriverMailboxData0, 0x3);
mmio_space()->Write32(kGtDriverMailboxData1, 0x0);
mmio_space()->Write32(kGtDriverMailboxInterface, 0x80000007);
}
// Enable and wait for DBUF
auto dbuf_ctl = registers::DbufCtl::Get().ReadFrom(mmio_space());
dbuf_ctl.set_power_request(1);
dbuf_ctl.WriteTo(mmio_space());
if (!WAIT_ON_US(registers::DbufCtl::Get().ReadFrom(mmio_space()).power_state(), 10)) {
zxlogf(ERROR, "Failed to enable DBUF");
return false;
}
// We never use VGA, so just disable it at startup
constexpr uint16_t kSequencerIdx = 0x3c4;
constexpr uint16_t kSequencerData = 0x3c5;
constexpr uint8_t kClockingModeIdx = 1;
constexpr uint8_t kClockingModeScreenOff = (1 << 5);
// Please do not use get_root_resource() in new code. See fxbug.dev/31358.
zx_status_t status = zx_ioports_request(get_root_resource(), kSequencerIdx, 2);
if (status != ZX_OK) {
zxlogf(ERROR, "Failed to map vga ports");
return false;
}
outp(kSequencerIdx, kClockingModeIdx);
uint8_t clocking_mode = inp(kSequencerData);
if (!(clocking_mode & kClockingModeScreenOff)) {
outp(kSequencerIdx, inp(kSequencerData) | kClockingModeScreenOff);
zx_nanosleep(zx_deadline_after(ZX_MSEC(100)));
auto vga_ctl = registers::VgaCtl::Get().ReadFrom(mmio_space());
vga_ctl.set_vga_display_disable(1);
vga_ctl.WriteTo(mmio_space());
}
for (unsigned i = 0; i < registers::kPipeCount; i++) {
ResetPipe(registers::kPipes[i]);
registers::PipeRegs pipe_regs(registers::kPipes[i]);
// Disable the scalers (double buffered on PipeScalerWinSize), since
// we don't know what state they are in at boot.
pipe_regs.PipeScalerCtrl(0).ReadFrom(mmio_space()).set_enable(0).WriteTo(mmio_space());
pipe_regs.PipeScalerWinSize(0).ReadFrom(mmio_space()).WriteTo(mmio_space());
if (i != registers::PIPE_C) {
pipe_regs.PipeScalerCtrl(1).ReadFrom(mmio_space()).set_enable(0).WriteTo(mmio_space());
pipe_regs.PipeScalerWinSize(1).ReadFrom(mmio_space()).WriteTo(mmio_space());
}
// Disable the cursor watermark
for (int wm_num = 0; wm_num < 8; wm_num++) {
auto wm = pipe_regs.PlaneWatermark(0, wm_num).FromValue(0);
wm.WriteTo(mmio_space());
}
// Disable the primary plane watermarks and reset their buffer allocation
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
for (int wm_num = 0; wm_num < 8; wm_num++) {
auto wm = pipe_regs.PlaneWatermark(plane_num + 1, wm_num).FromValue(0);
wm.WriteTo(mmio_space());
}
}
}
return true;
}
void Controller::ResetPipe(registers::Pipe pipe) {
registers::PipeRegs pipe_regs(pipe);
// Disable planes, bottom color, and cursor
for (int i = 0; i < 3; i++) {
pipe_regs.PlaneControl(i).FromValue(0).WriteTo(mmio_space());
pipe_regs.PlaneSurface(i).FromValue(0).WriteTo(mmio_space());
}
auto cursor_ctrl = pipe_regs.CursorCtrl().ReadFrom(mmio_space());
cursor_ctrl.set_mode_select(cursor_ctrl.kDisabled);
cursor_ctrl.WriteTo(mmio_space());
pipe_regs.CursorBase().FromValue(0).WriteTo(mmio_space());
pipe_regs.PipeBottomColor().FromValue(0).WriteTo(mmio_space());
ZX_DEBUG_ASSERT(mtx_trylock(&display_lock_) == thrd_busy);
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
plane_buffers_[pipe][plane_num].start = registers::PlaneBufCfg::kBufferCount;
}
}
bool Controller::ResetTrans(registers::Trans trans) {
registers::TranscoderRegs trans_regs(trans);
// Disable transcoder and wait it to stop
auto trans_conf = trans_regs.Conf().ReadFrom(mmio_space());
trans_conf.set_transcoder_enable(0);
trans_conf.WriteTo(mmio_space());
if (!WAIT_ON_MS(!trans_regs.Conf().ReadFrom(mmio_space()).transcoder_state(), 60)) {
zxlogf(ERROR, "Failed to reset transcoder");
return false;
}
// Disable transcoder ddi select and clock select
auto trans_ddi_ctl = trans_regs.DdiFuncControl().ReadFrom(mmio_space());
trans_ddi_ctl.set_trans_ddi_function_enable(0);
trans_ddi_ctl.set_ddi_select(0);
trans_ddi_ctl.WriteTo(mmio_space());
if (trans != registers::TRANS_EDP) {
auto trans_clk_sel = trans_regs.ClockSelect().ReadFrom(mmio_space());
trans_clk_sel.set_trans_clock_select(0);
trans_clk_sel.WriteTo(mmio_space());
}
return true;
}
bool Controller::ResetDdi(registers::Ddi ddi) {
registers::DdiRegs ddi_regs(ddi);
// Disable the port
auto ddi_buf_ctl = ddi_regs.DdiBufControl().ReadFrom(mmio_space());
bool was_enabled = ddi_buf_ctl.ddi_buffer_enable();
ddi_buf_ctl.set_ddi_buffer_enable(0);
ddi_buf_ctl.WriteTo(mmio_space());
auto ddi_dp_tp_ctl = ddi_regs.DdiDpTransportControl().ReadFrom(mmio_space());
ddi_dp_tp_ctl.set_transport_enable(0);
ddi_dp_tp_ctl.set_dp_link_training_pattern(ddi_dp_tp_ctl.kTrainingPattern1);
ddi_dp_tp_ctl.WriteTo(mmio_space());
if (was_enabled &&
!WAIT_ON_MS(ddi_regs.DdiBufControl().ReadFrom(mmio_space()).ddi_idle_status(), 8)) {
zxlogf(ERROR, "Port failed to go idle");
return false;
}
// Disable IO power
auto pwc2 = registers::PowerWellControl2::Get().ReadFrom(mmio_space());
pwc2.ddi_io_power_request(ddi).set(0);
pwc2.WriteTo(mmio_space());
// Remove the PLL mapping and disable the PLL (we don't share PLLs)
auto dpll_ctrl2 = registers::DpllControl2::Get().ReadFrom(mmio_space());
if (!dpll_ctrl2.ddi_clock_off(ddi).get()) {
dpll_ctrl2.ddi_clock_off(ddi).set(1);
dpll_ctrl2.WriteTo(mmio_space());
registers::Dpll dpll = static_cast<registers::Dpll>(dpll_ctrl2.ddi_clock_select(ddi).get());
// Don't underflow if we're resetting at initialization
dplls_[dpll].use_count =
static_cast<uint8_t>(dplls_[dpll].use_count > 0 ? dplls_[dpll].use_count - 1 : 0);
// We don't want to disable DPLL0, since that drives cdclk.
if (dplls_[dpll].use_count == 0 && dpll != registers::DPLL_0) {
auto dpll_enable = registers::DpllEnable::Get(dpll).ReadFrom(mmio_space());
dpll_enable.set_enable_dpll(0);
dpll_enable.WriteTo(mmio_space());
}
}
return true;
}
registers::Dpll Controller::SelectDpll(bool is_edp, const dpll_state_t& state) {
registers::Dpll res = registers::DPLL_INVALID;
if (is_edp) {
ZX_ASSERT(!state.is_hdmi);
if (dplls_[0].use_count == 0 || dplls_[0].state.dp_rate == state.dp_rate) {
res = registers::DPLL_0;
}
} else {
for (unsigned i = registers::kDpllCount - 1; i > 0; i--) {
if (dplls_[i].use_count == 0) {
res = static_cast<registers::Dpll>(i);
} else if (CompareDpllStates(dplls_[i].state, state)) {
res = static_cast<registers::Dpll>(i);
break;
}
}
}
if (res != registers::DPLL_INVALID) {
dplls_[res].state = state;
dplls_[res].use_count++;
zxlogf(DEBUG, "Selected DPLL %d", res);
} else {
zxlogf(WARNING, "Failed to allocate DPLL");
}
return res;
}
const dpll_state_t* Controller::GetDpllState(registers::Dpll dpll) {
if (dplls_[dpll].use_count) {
return &dplls_[dpll].state;
}
return nullptr;
}
std::unique_ptr<DisplayDevice> Controller::QueryDisplay(registers::Ddi ddi) {
fbl::AllocChecker ac;
if (igd_opregion_.SupportsDp(ddi)) {
zxlogf(DEBUG, "Checking for displayport monitor");
auto dp_disp = fbl::make_unique_checked<DpDisplay>(&ac, this, next_id_, ddi);
if (ac.check() && reinterpret_cast<DisplayDevice*>(dp_disp.get())->Query()) {
return dp_disp;
}
}
if (igd_opregion_.SupportsHdmi(ddi) || igd_opregion_.SupportsDvi(ddi)) {
zxlogf(DEBUG, "Checking for hdmi monitor");
auto hdmi_disp = fbl::make_unique_checked<HdmiDisplay>(&ac, this, next_id_, ddi);
if (ac.check() && reinterpret_cast<DisplayDevice*>(hdmi_disp.get())->Query()) {
return hdmi_disp;
}
}
return nullptr;
}
bool Controller::LoadHardwareState(registers::Ddi ddi, DisplayDevice* device) {
registers::DdiRegs regs(ddi);
if (!registers::PowerWellControl2::Get().ReadFrom(mmio_space()).ddi_io_power_state(ddi).get() ||
!regs.DdiBufControl().ReadFrom(mmio_space()).ddi_buffer_enable()) {
return false;
}
auto pipe = registers::PIPE_INVALID;
if (ddi == registers::DDI_A) {
registers::TranscoderRegs regs(registers::TRANS_EDP);
auto ddi_func_ctrl = regs.DdiFuncControl().ReadFrom(mmio_space());
if (ddi_func_ctrl.edp_input_select() == ddi_func_ctrl.kPipeA) {
pipe = registers::PIPE_A;
} else if (ddi_func_ctrl.edp_input_select() == ddi_func_ctrl.kPipeB) {
pipe = registers::PIPE_B;
} else if (ddi_func_ctrl.edp_input_select() == ddi_func_ctrl.kPipeC) {
pipe = registers::PIPE_C;
}
} else {
for (unsigned j = 0; j < registers::kPipeCount; j++) {
auto transcoder = registers::kTrans[j];
registers::TranscoderRegs regs(transcoder);
if (regs.ClockSelect().ReadFrom(mmio_space()).trans_clock_select() == ddi + 1u &&
regs.DdiFuncControl().ReadFrom(mmio_space()).ddi_select() == ddi) {
pipe = registers::kPipes[j];
break;
}
}
}
if (pipe == registers::PIPE_INVALID) {
return false;
}
auto dpll_ctrl2 = registers::DpllControl2::Get().ReadFrom(mmio_space());
if (dpll_ctrl2.ddi_clock_off(ddi).get()) {
return false;
}
auto dpll = static_cast<registers::Dpll>(dpll_ctrl2.ddi_clock_select(ddi).get());
auto dpll_enable = registers::DpllEnable::Get(dpll).ReadFrom(mmio_space());
if (!dpll_enable.enable_dpll()) {
return false;
}
auto dpll_ctrl1 = registers::DpllControl1::Get().ReadFrom(mmio_space());
dplls_[dpll].use_count++;
dplls_[dpll].state.is_hdmi = dpll_ctrl1.dpll_hdmi_mode(dpll).get();
if (dplls_[dpll].state.is_hdmi) {
auto dpll_cfg1 = registers::DpllConfig1::Get(dpll).ReadFrom(mmio_space());
auto dpll_cfg2 = registers::DpllConfig2::Get(dpll).ReadFrom(mmio_space());
dplls_[dpll].state.hdmi = {
.dco_int = static_cast<uint16_t>(dpll_cfg1.dco_integer()),
.dco_frac = static_cast<uint16_t>(dpll_cfg1.dco_fraction()),
.q = static_cast<uint8_t>(dpll_cfg2.qdiv_ratio()),
.q_mode = static_cast<uint8_t>(dpll_cfg2.qdiv_mode()),
.k = static_cast<uint8_t>(dpll_cfg2.kdiv_ratio()),
.p = static_cast<uint8_t>(dpll_cfg2.pdiv_ratio()),
.cf = static_cast<uint8_t>(dpll_cfg2.central_freq()),
};
} else {
dplls_[dpll].state.dp_rate = dpll_ctrl1.dpll_link_rate(dpll).get();
}
device->AttachPipe(&pipes_[pipe]);
device->LoadActiveMode();
return true;
}
void Controller::InitDisplays() {
fbl::AutoLock lock(&display_lock_);
BringUpDisplayEngine(false);
for (uint32_t i = 0; i < registers::kDdiCount; i++) {
auto disp_device = QueryDisplay(registers::kDdis[i]);
if (disp_device) {
AddDisplay(std::move(disp_device));
}
}
if (display_devices_.size() == 0) {
zxlogf(INFO, "intel-i915: No displays detected.");
}
for (unsigned i = 0; i < registers::kDpllCount; i++) {
dplls_[i].use_count = 0;
}
// Make a note of what needs to be reset, so we can finish querying the hardware state
// before touching it, and so we can make sure transcoders are reset before ddis.
bool ddi_needs_reset[registers::kDdiCount] = {};
DisplayDevice* device_needs_init[registers::kDdiCount] = {};
for (unsigned i = 0; i < registers::kDdiCount; i++) {
auto ddi = registers::kDdis[i];
DisplayDevice* device = nullptr;
for (auto& d : display_devices_) {
if (d->ddi() == ddi) {
device = d.get();
break;
}
}
if (device == nullptr) {
ddi_needs_reset[ddi] = true;
} else {
if (!LoadHardwareState(ddi, device)) {
ddi_needs_reset[ddi] = true;
device_needs_init[ddi] = device;
} else {
device->InitBacklight();
}
}
}
// Reset any transcoders which aren't in use
for (unsigned i = 0; i < registers::kTransCount; i++) {
auto transcoder = registers::kTrans[i];
auto pipe = registers::PIPE_INVALID;
for (auto& p : pipes_) {
if (p.in_use() && p.transcoder() == transcoder) {
pipe = p.pipe();
break;
}
}
if (pipe == registers::PIPE_INVALID) {
ResetTrans(transcoder);
}
}
// Reset any ddis which don't have a restored display. If we failed to restore a
// display, try to initialize it here.
for (unsigned i = 0; i < registers::kDdiCount; i++) {
if (!ddi_needs_reset[i]) {
continue;
}
ResetDdi(static_cast<registers::Ddi>(i));
DisplayDevice* device = device_needs_init[i];
if (device && !device->Init()) {
for (unsigned i = 0; i < display_devices_.size(); i++) {
if (display_devices_[i].get() == device) {
display_devices_.erase(i);
break;
}
}
}
}
}
void Controller::RemoveDisplay(std::unique_ptr<DisplayDevice> display) {
// Invalidate and disable any ELD.
if (display->id() == eld_display_id_.value()) {
auto audio_pin = registers::AudioPinEldCPReadyStatus::Get().ReadFrom(mmio_space());
audio_pin.set_eld_valid_a(0).set_audio_enable_a(0).WriteTo(mmio_space());
eld_display_id_.reset();
}
// Make sure the display's resources get freed before reallocating the pipe buffers by letting
// "display" go out of scope.
}
zx_status_t Controller::AddDisplay(std::unique_ptr<DisplayDevice> display) {
uint64_t display_id = display->id();
// Add the new device.
fbl::AllocChecker ac;
display_devices_.push_back(std::move(display), &ac);
if (!ac.check()) {
zxlogf(WARNING, "Failed to add display device");
return ZX_ERR_NO_MEMORY;
}
zxlogf(INFO, "Display %ld connected", display_id);
next_id_++;
return ZX_OK;
}
void Controller::CallOnDisplaysChanged(DisplayDevice** added, size_t added_count, uint64_t* removed,
size_t removed_count) {
added_display_args_t added_args[added_count];
added_display_info_t added_info[added_count];
size_t added_actual;
for (unsigned i = 0; i < added_count; i++) {
added_args[i].display_id = added[i]->id();
added_args[i].edid_present = true;
added_args[i].panel.i2c_bus_id = added[i]->i2c_bus_id();
added_args[i].pixel_format_list = supported_formats;
added_args[i].pixel_format_count = static_cast<uint32_t>(std::size(supported_formats));
added_args[i].cursor_info_list = cursor_infos;
added_args[i].cursor_info_count = static_cast<uint32_t>(std::size(cursor_infos));
}
dc_intf_.OnDisplaysChanged(added_args, added_count, removed, removed_count, added_info,
added_count, &added_actual);
if (added_count != added_actual) {
zxlogf(WARNING, "%lu displays could not be added", added_count - added_actual);
}
for (unsigned i = 0; i < added_actual; i++) {
added[i]->set_is_hdmi(added_info[i].is_hdmi_out);
}
}
// DisplayControllerImpl methods
void Controller::DisplayControllerImplSetDisplayControllerInterface(
const display_controller_interface_protocol_t* intf) {
fbl::AutoLock lock(&display_lock_);
dc_intf_ = ddk::DisplayControllerInterfaceProtocolClient(intf);
if (ready_for_callback_ && display_devices_.size()) {
DisplayDevice* added_displays[registers::kDdiCount];
uint32_t size = static_cast<uint32_t>(display_devices_.size());
for (unsigned i = 0; i < size; i++) {
added_displays[i] = display_devices_[i].get();
}
CallOnDisplaysChanged(added_displays, size, NULL, 0);
}
}
zx_status_t Controller::DisplayControllerImplImportVmoImage(image_t* image, zx::vmo vmo,
size_t offset) {
return ZX_ERR_NOT_SUPPORTED;
}
static bool ConvertPixelFormatToType(fuchsia_sysmem_PixelFormat format, uint32_t* type_out) {
if (format.type != fuchsia_sysmem_PixelFormatType_BGRA32 &&
format.type != fuchsia_sysmem_PixelFormatType_R8G8B8A8) {
return false;
}
if (!format.has_format_modifier) {
return false;
}
switch (format.format_modifier.value) {
case fuchsia_sysmem_FORMAT_MODIFIER_INTEL_I915_X_TILED:
*type_out = IMAGE_TYPE_X_TILED;
return true;
case fuchsia_sysmem_FORMAT_MODIFIER_INTEL_I915_Y_TILED:
*type_out = IMAGE_TYPE_Y_LEGACY_TILED;
return true;
case fuchsia_sysmem_FORMAT_MODIFIER_INTEL_I915_YF_TILED:
*type_out = IMAGE_TYPE_YF_TILED;
return true;
case fuchsia_sysmem_FORMAT_MODIFIER_LINEAR:
*type_out = IMAGE_TYPE_SIMPLE;
return true;
default:
return false;
}
}
zx_status_t Controller::DisplayControllerImplImportImage(image_t* image, zx_unowned_handle_t handle,
uint32_t index) {
if (!(image->type == IMAGE_TYPE_SIMPLE || image->type == IMAGE_TYPE_X_TILED ||
image->type == IMAGE_TYPE_Y_LEGACY_TILED || image->type == IMAGE_TYPE_YF_TILED)) {
return ZX_ERR_INVALID_ARGS;
}
zx_status_t status, status2;
fuchsia_sysmem_BufferCollectionInfo_2 collection_info;
status =
fuchsia_sysmem_BufferCollectionWaitForBuffersAllocated(handle, &status2, &collection_info);
if (status != ZX_OK) {
return status;
}
if (status2 != ZX_OK) {
return status2;
}
zx::vmo vmo;
if (index < collection_info.buffer_count) {
vmo = zx::vmo(collection_info.buffers[index].vmo);
collection_info.buffers[index].vmo = ZX_HANDLE_INVALID;
}
for (uint32_t i = 0; i < collection_info.buffer_count; ++i) {
zx_handle_close(collection_info.buffers[i].vmo);
}
if (!collection_info.settings.has_image_format_constraints || !vmo) {
zxlogf(ERROR, "Invalid image format or index");
return ZX_ERR_OUT_OF_RANGE;
}
uint64_t offset = collection_info.buffers[index].vmo_usable_start;
if (offset % PAGE_SIZE != 0) {
zxlogf(ERROR, "Invalid offset");
return ZX_ERR_INVALID_ARGS;
}
uint32_t type;
if (!ConvertPixelFormatToType(collection_info.settings.image_format_constraints.pixel_format,
&type)) {
zxlogf(ERROR, "Invalid pixel format modifier");
return ZX_ERR_INVALID_ARGS;
}
if (image->type != type) {
zxlogf(ERROR, "Incompatible image type");
return ZX_ERR_INVALID_ARGS;
}
fbl::AutoLock lock(&gtt_lock_);
fbl::AllocChecker ac;
imported_images_.reserve(imported_images_.size() + 1, &ac);
if (!ac.check()) {
return ZX_ERR_NO_MEMORY;
}
uint32_t length = width_in_tiles(image->type, image->width, image->pixel_format) *
height_in_tiles(image->type, image->height, image->pixel_format) *
get_tile_byte_size(image->type);
uint32_t align;
if (image->type == IMAGE_TYPE_SIMPLE) {
align = registers::PlaneSurface::kLinearAlignment;
} else if (image->type == IMAGE_TYPE_X_TILED) {
align = registers::PlaneSurface::kXTilingAlignment;
} else {
align = registers::PlaneSurface::kYTilingAlignment;
}
std::unique_ptr<GttRegion> gtt_region;
status = gtt_.AllocRegion(length, align, &gtt_region);
if (status != ZX_OK) {
return status;
}
// The vsync logic requires that images not have base == 0
if (gtt_region->base() == 0) {
std::unique_ptr<GttRegion> alt_gtt_region;
zx_status_t status = gtt_.AllocRegion(length, align, &alt_gtt_region);
if (status != ZX_OK) {
return status;
}
gtt_region = std::move(alt_gtt_region);
}
status = gtt_region->PopulateRegion(vmo.release(), offset / PAGE_SIZE, length);
if (status != ZX_OK) {
return status;
}
image->handle = gtt_region->base();
imported_images_.push_back(std::move(gtt_region));
return ZX_OK;
}
void Controller::DisplayControllerImplReleaseImage(image_t* image) {
fbl::AutoLock lock(&gtt_lock_);
for (unsigned i = 0; i < imported_images_.size(); i++) {
if (imported_images_[i]->base() == image->handle) {
imported_images_[i]->ClearRegion();
imported_images_.erase(i);
return;
}
}
}
const std::unique_ptr<GttRegion>& Controller::GetGttRegion(uint64_t handle) {
fbl::AutoLock lock(&gtt_lock_);
for (auto& region : imported_images_) {
if (region->base() == handle) {
return region;
}
}
ZX_ASSERT(false);
}
bool Controller::GetPlaneLayer(registers::Pipe pipe, uint32_t plane,
const display_config_t** configs, size_t display_count,
const layer_t** layer_out) {
if (!pipes_[pipe].in_use()) {
return false;
}
uint64_t disp_id = pipes_[pipe].attached_display_id();
for (unsigned i = 0; i < display_count; i++) {
const display_config_t* config = configs[i];
if (config->display_id != disp_id) {
continue;
}
bool has_color_layer = config->layer_count && config->layer_list[0]->type == LAYER_TYPE_COLOR;
for (unsigned j = 0; j < config->layer_count; j++) {
if (config->layer_list[j]->type == LAYER_TYPE_PRIMARY) {
if (plane != (config->layer_list[j]->z_index - has_color_layer)) {
continue;
}
} else if (config->layer_list[j]->type == LAYER_TYPE_CURSOR) {
// Since the config is validated, we know the cursor is the
// highest plane, so we don't care about the layer's z_index.
if (plane != registers::kCursorPlane) {
continue;
}
} else if (config->layer_list[j]->type == LAYER_TYPE_COLOR) {
// color layers aren't a plane
continue;
} else {
ZX_ASSERT(false);
}
*layer_out = config->layer_list[j];
return true;
}
}
return false;
}
uint16_t Controller::CalculateBuffersPerPipe(size_t display_count) {
ZX_ASSERT(display_count < registers::kPipeCount);
return static_cast<uint16_t>(registers::PlaneBufCfg::kBufferCount / display_count);
}
bool Controller::CalculateMinimumAllocations(
const display_config_t** display_configs, size_t display_count,
uint16_t min_allocs[registers::kPipeCount][registers::kImagePlaneCount]) {
// This fn ignores layers after kImagePlaneCount. Displays with too many layers already
// failed in ::CheckConfiguration, so it doesn't matter if we incorrectly say they pass here.
bool success = true;
for (unsigned pipe_num = 0; pipe_num < registers::kPipeCount; pipe_num++) {
registers::Pipe pipe = registers::kPipes[pipe_num];
uint32_t total = 0;
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
const layer_t* layer;
if (!GetPlaneLayer(pipe, plane_num, display_configs, display_count, &layer)) {
min_allocs[pipe_num][plane_num] = 0;
continue;
}
if (layer->type == LAYER_TYPE_CURSOR) {
min_allocs[pipe_num][plane_num] = 8;
continue;
}
ZX_ASSERT(layer->type == LAYER_TYPE_PRIMARY);
const primary_layer_t* primary = &layer->cfg.primary;
if (primary->image.type == IMAGE_TYPE_SIMPLE || primary->image.type == IMAGE_TYPE_X_TILED) {
min_allocs[pipe_num][plane_num] = 8;
} else {
uint32_t plane_source_width;
uint32_t min_scan_lines;
uint32_t bytes_per_pixel = ZX_PIXEL_FORMAT_BYTES(primary->image.pixel_format);
if (primary->transform_mode == FRAME_TRANSFORM_IDENTITY ||
primary->transform_mode == FRAME_TRANSFORM_ROT_180) {
plane_source_width = primary->src_frame.width;
min_scan_lines = 8;
} else {
plane_source_width = primary->src_frame.height;
min_scan_lines = 32 / bytes_per_pixel;
}
min_allocs[pipe_num][plane_num] = static_cast<uint16_t>(
((fbl::round_up(4u * plane_source_width * bytes_per_pixel, 512u) / 512u) *
(min_scan_lines / 4)) +
3);
if (min_allocs[pipe_num][plane_num] < 8) {
min_allocs[pipe_num][plane_num] = 8;
}
}
total += min_allocs[pipe_num][plane_num];
}
if (total && total > CalculateBuffersPerPipe(display_count)) {
min_allocs[pipe_num][0] = UINT16_MAX;
success = false;
}
}
return success;
}
void Controller::UpdateAllocations(
const uint16_t min_allocs[registers::kPipeCount][registers::kImagePlaneCount],
const uint64_t data_rate[registers::kPipeCount][registers::kImagePlaneCount]) {
uint16_t allocs[registers::kPipeCount][registers::kImagePlaneCount];
for (unsigned pipe_num = 0; pipe_num < registers::kPipeCount; pipe_num++) {
uint64_t total_data_rate = 0;
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
total_data_rate += data_rate[pipe_num][plane_num];
}
if (total_data_rate == 0) {
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
allocs[pipe_num][plane_num] = 0;
}
continue;
}
// Allocate buffers based on the percentage of the total pixel bandwidth they take. If
// that percentage isn't enough for a plane, give that plane its minimum allocation and
// then try again.
double buffers_per_pipe = pipe_buffers_[pipe_num].end - pipe_buffers_[pipe_num].start;
bool forced_alloc[registers::kImagePlaneCount] = {};
bool done = false;
while (!done) {
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
if (forced_alloc[plane_num]) {
continue;
}
double blocks = buffers_per_pipe * static_cast<double>(data_rate[pipe_num][plane_num]) /
static_cast<double>(total_data_rate);
allocs[pipe_num][plane_num] = static_cast<uint16_t>(blocks);
}
done = true;
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
if (allocs[pipe_num][plane_num] < min_allocs[pipe_num][plane_num]) {
done = false;
allocs[pipe_num][plane_num] = min_allocs[pipe_num][plane_num];
forced_alloc[plane_num] = true;
total_data_rate -= data_rate[pipe_num][plane_num];
buffers_per_pipe -= allocs[pipe_num][plane_num];
}
}
}
}
// Do the actual allocation, using the buffers that are assigned to each pipe.
for (unsigned pipe_num = 0; pipe_num < registers::kPipeCount; pipe_num++) {
uint16_t start = pipe_buffers_[pipe_num].start;
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
auto cur = &plane_buffers_[pipe_num][plane_num];
if (allocs[pipe_num][plane_num] == 0) {
cur->start = registers::PlaneBufCfg::kBufferCount;
cur->end = static_cast<uint16_t>(cur->start + 1);
} else {
cur->start = start;
cur->end = static_cast<uint16_t>(start + allocs[pipe_num][plane_num]);
}
start = static_cast<uint16_t>(start + allocs[pipe_num][plane_num]);
registers::Pipe pipe = registers::kPipes[pipe_num];
registers::PipeRegs pipe_regs(pipe);
// These are latched on the surface address register, so we don't yet need to
// worry about overlaps when updating planes during a pipe allocation.
auto buf_cfg = pipe_regs.PlaneBufCfg(plane_num + 1).FromValue(0);
buf_cfg.set_buffer_start(cur->start);
buf_cfg.set_buffer_end(cur->end - 1);
buf_cfg.WriteTo(mmio_space());
// TODO(stevensd): Real watermark programming
auto wm0 = pipe_regs.PlaneWatermark(plane_num + 1, 0).FromValue(0);
wm0.set_enable(cur->start != registers::PlaneBufCfg::kBufferCount);
wm0.set_blocks(cur->end - cur->start);
wm0.WriteTo(mmio_space());
// Give the buffers to both the cursor plane and plane 2, since
// only one will actually be active.
if (plane_num == registers::kCursorPlane) {
auto buf_cfg = pipe_regs.PlaneBufCfg(0).FromValue(0);
buf_cfg.set_buffer_start(cur->start);
buf_cfg.set_buffer_end(cur->end - 1);
buf_cfg.WriteTo(mmio_space());
auto wm0 = pipe_regs.PlaneWatermark(0, 0).FromValue(0);
wm0.set_enable(cur->start != registers::PlaneBufCfg::kBufferCount);
wm0.set_blocks(cur->end - cur->start);
wm0.WriteTo(mmio_space());
}
}
}
}
void Controller::ReallocatePlaneBuffers(const display_config_t** display_configs,
size_t display_count, bool reallocate_pipes) {
if (display_count == 0) {
// Deal with reallocation later, when there are actually displays
return;
}
uint16_t min_allocs[registers::kPipeCount][registers::kImagePlaneCount];
if (!CalculateMinimumAllocations(display_configs, display_count, min_allocs)) {
// The allocation should have been checked, so this shouldn't fail
ZX_ASSERT(false);
}
// Calculate the data rates and store the minimum allocations
uint64_t data_rate[registers::kPipeCount][registers::kImagePlaneCount];
for (unsigned pipe_num = 0; pipe_num < registers::kPipeCount; pipe_num++) {
registers::Pipe pipe = registers::kPipes[pipe_num];
for (unsigned plane_num = 0; plane_num < registers::kImagePlaneCount; plane_num++) {
const layer_t* layer;
if (!GetPlaneLayer(pipe, plane_num, display_configs, display_count, &layer)) {
data_rate[pipe_num][plane_num] = 0;
} else if (layer->type == LAYER_TYPE_PRIMARY) {
const primary_layer_t* primary = &layer->cfg.primary;
uint32_t scaled_width =
primary->src_frame.width * primary->src_frame.width / primary->dest_frame.width;
uint32_t scaled_height =
primary->src_frame.height * primary->src_frame.height / primary->dest_frame.height;
data_rate[pipe_num][plane_num] =
scaled_width * scaled_height * ZX_PIXEL_FORMAT_BYTES(primary->image.pixel_format);
} else if (layer->type == LAYER_TYPE_CURSOR) {
// Use a tiny data rate so the cursor gets the minimum number of buffers
data_rate[pipe_num][plane_num] = 1;
} else {
// Other layers don't use pipe/planes, so GetPlaneLayer should have returned false
ZX_ASSERT(false);
}
}
}
if (initial_alloc_) {
initial_alloc_ = false;
reallocate_pipes = true;
}
buffer_allocation_t active_allocation[registers::kPipeCount];
if (reallocate_pipes) {
// Allocate buffers to each pipe, but save the old allocation to use
// when progressively updating the allocation.
memcpy(active_allocation, pipe_buffers_, sizeof(active_allocation));
uint16_t buffers_per_pipe = CalculateBuffersPerPipe(display_count);
int active_pipes = 0;
for (unsigned pipe_num = 0; pipe_num < registers::kPipeCount; pipe_num++) {
if (pipes_[pipe_num].in_use()) {
pipe_buffers_[pipe_num].start = static_cast<uint16_t>(buffers_per_pipe * active_pipes);
pipe_buffers_[pipe_num].end =
static_cast<uint16_t>(pipe_buffers_[pipe_num].start + buffers_per_pipe);
active_pipes++;
} else {
pipe_buffers_[pipe_num].start = pipe_buffers_[pipe_num].end = 0;
}
zxlogf(DEBUG, "Pipe %d buffers: [%d, %d)", pipe_num, pipe_buffers_[pipe_num].start,
pipe_buffers_[pipe_num].end);
}
}
// It's not necessary to flush the buffer changes since the pipe allocs didn't change
UpdateAllocations(min_allocs, data_rate);
if (reallocate_pipes) {
DoPipeBufferReallocation(active_allocation);
}
}
void Controller::DoPipeBufferReallocation(
buffer_allocation_t active_allocation[registers::kPipeCount]) {
// Given that the order of the allocations is fixed, an allocation X_i is contained completely
// within its old allocation if {new len of allocations preceding X_i} >= {start of old X_i} and
// {new len of allocations preceding X_i + new len of X_i} <= {end of old X_i}. For any i,
// if condition 1 holds, either condition 2 is true and we're done, or condition 2 doesn't
// and condition 1 holds for i + 1. Since condition 1 holds for i == 0 and because condition
// 2 holds for the last allocation (since the allocation is valid), it is guaranteed that
// at least one allocation is entirely within its old allocation. The remaining buffers
// are guaranteed to be re-allocatable recursively in the same manner. Therefore the loop will
// make progress every iteration.
bool done = false;
while (!done) {
done = true;
for (unsigned pipe_num = 0; pipe_num < registers::kPipeCount; pipe_num++) {
auto active_alloc = active_allocation + pipe_num;
auto goal_alloc = pipe_buffers_ + pipe_num;
if (active_alloc->start == goal_alloc->start && active_alloc->end == goal_alloc->end) {
continue;
}
// Look through all the other active pipe allocations for overlap
bool overlap = false;
if (goal_alloc->start != goal_alloc->end) {
for (unsigned other_pipe = 0; other_pipe < registers::kPipeCount; other_pipe++) {
if (other_pipe == pipe_num) {
continue;
}
auto other_active = active_allocation + other_pipe;
if (other_active->start == other_active->end) {
continue;
}
if ((other_active->start <= goal_alloc->start && goal_alloc->start < other_active->end) ||
(other_active->start < goal_alloc->end && goal_alloc->end <= other_active->end)) {
overlap = true;
break;
}
}
}
if (!overlap) {
// Flush the pipe allocation, wait for it to be active, and update
// what is current active.
registers::PipeRegs pipe_regs(registers::kPipes[pipe_num]);
for (unsigned j = 0; j < registers::kImagePlaneCount; j++) {
pipe_regs.PlaneSurface(j).ReadFrom(mmio_space()).WriteTo(mmio_space());
}
pipe_regs.CursorBase().ReadFrom(mmio_space()).WriteTo(mmio_space());
// TODO(stevensd): Wait for vsync instead of sleeping
// TODO(stevesnd): Parallelize/reduce the number of vsyncs we wait for
zx_nanosleep(zx_deadline_after(ZX_MSEC(33)));
*active_alloc = *goal_alloc;
} else {
done = false;
}
}
}
}
bool Controller::CheckDisplayLimits(const display_config_t** display_configs, size_t display_count,
uint32_t** layer_cfg_results) {
for (unsigned i = 0; i < display_count; i++) {
const display_config_t* config = display_configs[i];
// The intel display controller doesn't support these flags
if (config->mode.flags & (MODE_FLAG_ALTERNATING_VBLANK | MODE_FLAG_DOUBLE_CLOCKED)) {
return false;
}
DisplayDevice* display = FindDevice(config->display_id);
if (display == nullptr) {
continue;
}
// Pipes don't support height of more than 4096. They support a width of up to
// 2^14 - 1. However, planes don't support a width of more than 8192 and we need
// to always be able to accept a single plane, fullscreen configuration.
if (config->mode.v_addressable > 4096 || config->mode.h_addressable > 8192) {
return false;
}
uint64_t max_pipe_pixel_rate;
auto cd_freq = registers::CdClockCtl::Get().ReadFrom(mmio_space()).cd_freq_decimal();
if (cd_freq == registers::CdClockCtl::kFreqDecimal30857) {
max_pipe_pixel_rate = 308570000;
} else if (cd_freq == registers::CdClockCtl::kFreqDecimal3375) {
max_pipe_pixel_rate = 337500000;
} else if (cd_freq == registers::CdClockCtl::kFreqDecimal432) {
max_pipe_pixel_rate = 432000000;
} else if (cd_freq == registers::CdClockCtl::kFreqDecimal450) {
max_pipe_pixel_rate = 450000000;
} else if (cd_freq == registers::CdClockCtl::kFreqDecimal540) {
max_pipe_pixel_rate = 540000000;
} else if (cd_freq == registers::CdClockCtl::kFreqDecimal61714) {
max_pipe_pixel_rate = 617140000;
} else if (cd_freq == registers::CdClockCtl::kFreqDecimal675) {
max_pipe_pixel_rate = 675000000;
} else {
ZX_ASSERT(false);
}
// Either the pipe pixel rate or the link pixel rate can't support a simple
// configuration at this display resolution.
if (max_pipe_pixel_rate < config->mode.pixel_clock_10khz * 10000 ||
!display->CheckPixelRate(config->mode.pixel_clock_10khz * 10000)) {
return false;
}
// Compute the maximum pipe pixel rate with the desired scaling. If the max rate
// is too low, then make the client do any downscaling itself.
double min_plane_ratio = 1.0;
for (unsigned i = 0; i < config->layer_count; i++) {
if (config->layer_list[i]->type != LAYER_TYPE_PRIMARY) {
continue;
}
primary_layer_t* primary = &config->layer_list[i]->cfg.primary;
uint32_t src_width, src_height;
get_posttransform_width(*config->layer_list[i], &src_width, &src_height);
double downscale = std::max(1.0, 1.0 * src_height / primary->dest_frame.height) *
std::max(1.0, 1.0 * src_width / primary->dest_frame.width);
double plane_ratio = 1.0 / downscale;
min_plane_ratio = std::min(plane_ratio, min_plane_ratio);
}
max_pipe_pixel_rate =
static_cast<uint64_t>(min_plane_ratio * static_cast<double>(max_pipe_pixel_rate));
if (max_pipe_pixel_rate < config->mode.pixel_clock_10khz * 10000) {
for (unsigned j = 0; j < config->layer_count; j++) {
if (config->layer_list[j]->type != LAYER_TYPE_PRIMARY) {
continue;
}
primary_layer_t* primary = &config->layer_list[j]->cfg.primary;
uint32_t src_width, src_height;
get_posttransform_width(*config->layer_list[j], &src_width, &src_height);
if (src_height > primary->dest_frame.height || src_width > primary->dest_frame.width) {
layer_cfg_results[i][j] |= CLIENT_FRAME_SCALE;
}
}
}
// TODO(stevensd): Check maximum memory read bandwidth, watermark
}
return true;
}
uint32_t Controller::DisplayControllerImplCheckConfiguration(
const display_config_t** display_config, size_t display_count, uint32_t** layer_cfg_result,
size_t* layer_cfg_result_count) {
fbl::AutoLock lock(&display_lock_);
if (display_count == 0) {
// All displays off is supported
return CONFIG_DISPLAY_OK;
}
uint64_t pipe_alloc[registers::kPipeCount];
if (!CalculatePipeAllocation(display_config, display_count, pipe_alloc)) {
return CONFIG_DISPLAY_TOO_MANY;
}
if (!CheckDisplayLimits(display_config, display_count, layer_cfg_result)) {
return CONFIG_DISPLAY_UNSUPPORTED_MODES;
}
for (unsigned i = 0; i < display_count; i++) {
auto* config = display_config[i];
DisplayDevice* display = nullptr;
for (auto& d : display_devices_) {
if (d->id() == config->display_id) {
display = d.get();
break;
}
}
if (display == nullptr) {
zxlogf(INFO, "Got config with no display - assuming hotplug and skipping");
continue;
}
bool merge_all = false;
if (config->layer_count > 3) {
merge_all = config->layer_count > 4 || config->layer_list[0]->type != LAYER_TYPE_COLOR;
}
if (!merge_all && config->cc_flags) {
if (config->cc_flags & COLOR_CONVERSION_PREOFFSET) {
for (int i = 0; i < 3; i++) {
merge_all |= config->cc_preoffsets[i] <= -1;
merge_all |= config->cc_preoffsets[i] >= 1;
}
}
if (config->cc_flags & COLOR_CONVERSION_POSTOFFSET) {
for (int i = 0; i < 3; i++) {
merge_all |= config->cc_postoffsets[i] <= -1;
merge_all |= config->cc_postoffsets[i] >= 1;
}
}
}
uint32_t total_scalers_needed = 0;
for (unsigned j = 0; j < config->layer_count; j++) {
switch (config->layer_list[j]->type) {
case LAYER_TYPE_PRIMARY: {
primary_layer_t* primary = &config->layer_list[j]->cfg.primary;
if (primary->transform_mode == FRAME_TRANSFORM_ROT_90 ||
primary->transform_mode == FRAME_TRANSFORM_ROT_270) {
// Linear and x tiled images don't support 90/270 rotation
if (primary->image.type == IMAGE_TYPE_SIMPLE ||
primary->image.type == IMAGE_TYPE_X_TILED) {
layer_cfg_result[i][j] |= CLIENT_TRANSFORM;
}
} else if (primary->transform_mode != FRAME_TRANSFORM_IDENTITY &&
primary->transform_mode != FRAME_TRANSFORM_ROT_180) {
// Cover unsupported rotations
layer_cfg_result[i][j] |= CLIENT_TRANSFORM;
}
uint32_t src_width, src_height;
get_posttransform_width(*config->layer_list[j], &src_width, &src_height);
// If the plane is too wide, force the client to do all composition
// and just give us a simple configuration.
uint32_t max_width;
if (primary->image.type == IMAGE_TYPE_SIMPLE ||
primary->image.type == IMAGE_TYPE_X_TILED) {
max_width = 8192;
} else {
max_width = 4096;
}
if (src_width > max_width) {
merge_all = true;
}
if (primary->dest_frame.width != src_width || primary->dest_frame.height != src_height) {
float ratio = registers::PipeScalerCtrl::k7x5MaxRatio;
uint32_t max_width = static_cast<uint32_t>(static_cast<float>(src_width) * ratio);
uint32_t max_height = static_cast<uint32_t>(static_cast<float>(src_height) * ratio);
uint32_t scalers_needed = 1;
// The 7x5 scaler (i.e. 2 scaler resources) is required if the src width is
// >2048 and the required vertical scaling is greater than 1.99.
if (primary->src_frame.width > 2048) {
float ratio = registers::PipeScalerCtrl::kDynamicMaxVerticalRatio2049;
uint32_t max_dynamic_height =
static_cast<uint32_t>(static_cast<float>(src_height) * ratio);
if (max_dynamic_height < primary->dest_frame.height) {
scalers_needed = 2;
}
}
// Verify that there are enough scaler resources
// Verify that the scaler input isn't too large or too small
// Verify that the required scaling ratio isn't too large
bool using_c = pipe_alloc[registers::PIPE_C] == display->id();
if ((total_scalers_needed + scalers_needed) >
(using_c ? registers::PipeScalerCtrl::kPipeCScalersAvailable
: registers::PipeScalerCtrl::kPipeABScalersAvailable) ||
src_width > registers::PipeScalerCtrl::kMaxSrcWidthPx ||
src_width < registers::PipeScalerCtrl::kMinSrcSizePx ||
src_height < registers::PipeScalerCtrl::kMinSrcSizePx ||
max_width < primary->dest_frame.width || max_height < primary->dest_frame.height) {
layer_cfg_result[i][j] |= CLIENT_FRAME_SCALE;
} else {
total_scalers_needed += scalers_needed;
}
}
break;
}
case LAYER_TYPE_CURSOR: {
if (j != config->layer_count - 1) {
layer_cfg_result[i][j] |= CLIENT_USE_PRIMARY;
}
const image_t* image = &config->layer_list[j]->cfg.cursor.image;
if (image->type != IMAGE_TYPE_SIMPLE) {
layer_cfg_result[i][j] |= CLIENT_USE_PRIMARY;
}
bool found = false;
for (unsigned x = 0; x < std::size(cursor_infos) && !found; x++) {
found = image->width == cursor_infos[x].width &&
image->height == cursor_infos[x].height &&
image->pixel_format == cursor_infos[x].format;
}
if (!found) {
layer_cfg_result[i][j] |= CLIENT_USE_PRIMARY;
}
break;
}
case LAYER_TYPE_COLOR: {
if (j != 0) {
layer_cfg_result[i][j] |= CLIENT_USE_PRIMARY;
}
zx_pixel_format_t format = config->layer_list[j]->cfg.color.format;
if (format != ZX_PIXEL_FORMAT_RGB_x888 && format != ZX_PIXEL_FORMAT_ARGB_8888) {
layer_cfg_result[i][j] |= CLIENT_USE_PRIMARY;
}
break;
}
default:
layer_cfg_result[i][j] |= CLIENT_USE_PRIMARY;
}
}
if (merge_all) {
layer_cfg_result[i][0] = CLIENT_MERGE_BASE;
for (unsigned j = 1; j < config->layer_count; j++) {
layer_cfg_result[i][j] = CLIENT_MERGE_SRC;
}
}
}
// CalculateMinimumAllocations ignores layers after kImagePlaneCount. That's fine, since
// that case already fails from an earlier check.
uint16_t arr[registers::kPipeCount][registers::kImagePlaneCount];
if (!CalculateMinimumAllocations(display_config, display_count, arr)) {
// Find any displays whose allocation fails and set the return code. Overwrite
// any previous errors, since they get solved by the merge.
for (unsigned pipe_num = 0; pipe_num < registers::kPipeCount; pipe_num++) {
if (arr[pipe_num][0] != UINT16_MAX) {
continue;
}
ZX_ASSERT(pipes_[pipe_num].in_use()); // If the allocation failed, it should be in use
uint64_t display_id = pipes_[pipe_num].attached_display_id();
for (unsigned i = 0; i < display_count; i++) {
if (display_config[i]->display_id != display_id) {
continue;
}
layer_cfg_result[i][0] = CLIENT_MERGE_BASE;
for (unsigned j = 1; j < display_config[i]->layer_count; j++) {
layer_cfg_result[i][j] = CLIENT_MERGE_SRC;
}
break;
}
}
}
return CONFIG_DISPLAY_OK;
}
bool Controller::CalculatePipeAllocation(const display_config_t** display_config,
size_t display_count,
uint64_t alloc[registers::kPipeCount]) {
if (display_count > registers::kPipeCount) {
return false;
}
memset(alloc, 0, sizeof(uint64_t) * registers::kPipeCount);
// Keep any allocated pipes on the same display
for (unsigned i = 0; i < display_count; i++) {
DisplayDevice* display = FindDevice(display_config[i]->display_id);
if (display != nullptr && display->pipe() != nullptr) {
alloc[display->pipe()->pipe()] = display_config[i]->display_id;
}
}
// Give unallocated pipes to displays that need them
for (unsigned i = 0; i < display_count; i++) {
DisplayDevice* display = FindDevice(display_config[i]->display_id);
if (display != nullptr && display->pipe() == nullptr) {
for (unsigned pipe_num = 0; pipe_num < registers::kPipeCount; pipe_num++) {
if (!alloc[pipe_num]) {
alloc[pipe_num] = display_config[i]->display_id;
break;
}
}
}
}
return true;
}
bool Controller::ReallocatePipes(const display_config_t** display_config, size_t display_count) {
if (display_count == 0) {
// If we were given an empty config, just wait until there's
// a real config before doing anything.
return false;
}
uint64_t pipe_alloc[registers::kPipeCount];
if (!CalculatePipeAllocation(display_config, display_count, pipe_alloc)) {
// Reallocations should only happen for validated configurations, so the
// pipe allocation should always succeed.
ZX_ASSERT(false);
return false;
}
bool pipe_change = false;
for (unsigned i = 0; i < display_devices_.size(); i++) {
auto& display = display_devices_[i];
const display_config_t* config = find_config(display->id(), display_config, display_count);
Pipe* pipe = nullptr;
if (config) {
pipe = display->pipe();
if (pipe == nullptr) {
for (unsigned i = 0; i < registers::kPipeCount; i++) {
if (pipe_alloc[i] == display->id()) {
pipe = pipes_ + i;
break;
}
}
}
}
if (display->AttachPipe(pipe)) {
pipe_change = true;
}
}
return pipe_change;
}
void Controller::DisplayControllerImplSetEld(uint64_t display_id, const uint8_t* raw_eld_list,
size_t raw_eld_count) {
// We use the first "a" of the 3 ELD slots in the datasheet.
if (eld_display_id_.has_value() && eld_display_id_.value() != display_id) {
zxlogf(ERROR, "ELD display already in use");
return;
}
eld_display_id_ = display_id;
constexpr size_t kMaxEldLength = 48;
size_t length = std::min<size_t>(raw_eld_count, kMaxEldLength);
auto edid0 = registers::AudEdidData::Get(0).ReadFrom(mmio_space());
auto audio_pin = registers::AudioPinEldCPReadyStatus::Get().ReadFrom(mmio_space());
auto ctrl = registers::AudioDipEldControlStatus::Get().ReadFrom(mmio_space());
audio_pin.set_audio_enable_a(1).set_eld_valid_a(0).WriteTo(mmio_space());
// TODO(andresoportus): We should "Wait for 2 vertical blanks" if we do this with the display
// enabled.
ctrl.set_eld_access_address(0).WriteTo(mmio_space());
ZX_ASSERT(!(length % 4)); // We don't use vendor block so length is multiple of 4.
for (size_t i = 0; i < length; i += 4) {
edid0.set_data(raw_eld_list[i] | (raw_eld_list[i + 1] << 8) | (raw_eld_list[i + 2] << 16) |
(raw_eld_list[i + 3] << 24));
edid0.WriteTo(mmio_space());
}
audio_pin.set_eld_valid_a(1).WriteTo(mmio_space());
}
void Controller::DisplayControllerImplApplyConfiguration(const display_config_t** display_config,
size_t display_count) {
uint64_t fake_vsyncs[registers::kDdiCount];
uint32_t fake_vsync_count = 0;
fbl::AutoLock lock(&display_lock_);
bool pipe_change = ReallocatePipes(display_config, display_count);
ReallocatePlaneBuffers(display_config, display_count, pipe_change);
for (unsigned i = 0; i < display_devices_.size(); i++) {
auto& display = display_devices_[i];
const display_config_t* config = find_config(display->id(), display_config, display_count);
if (config != nullptr) {
display->ApplyConfiguration(config);
} else {
if (display->pipe()) {
ResetPipe(display->pipe()->pipe());
}
}
// The hardware only gives vsyncs if at least one plane is enabled, so
// fake one if we need to, to inform the client that we're done with the
// images.
if (!config || config->layer_count == 0) {
fake_vsyncs[fake_vsync_count++] = display->id();
}
}
if (dc_intf_.is_valid()) {
zx_time_t now = fake_vsync_count ? zx_clock_get_monotonic() : 0;
for (unsigned i = 0; i < fake_vsync_count; i++) {
dc_intf_.OnDisplayVsync(fake_vsyncs[i], now, nullptr, 0);
}
}
}
zx_status_t Controller::DisplayControllerImplGetSysmemConnection(zx::channel connection) {
zx_status_t status = sysmem_connect(&sysmem_, connection.release());
if (status != ZX_OK) {
zxlogf(ERROR, "Could not connect to sysmem");
return status;
}
return ZX_OK;
}
zx_status_t Controller::DisplayControllerImplSetBufferCollectionConstraints(
const image_t* config, zx_unowned_handle_t collection) {
fuchsia_sysmem_BufferCollectionConstraints constraints = {};
constraints.usage.display = fuchsia_sysmem_displayUsageLayer;
constraints.has_buffer_memory_constraints = true;
fuchsia_sysmem_BufferMemoryConstraints& buffer_constraints =
constraints.buffer_memory_constraints;
buffer_constraints.min_size_bytes = 0;
buffer_constraints.max_size_bytes = 0xffffffff;
buffer_constraints.physically_contiguous_required = false;
buffer_constraints.secure_required = false;
buffer_constraints.ram_domain_supported = true;
buffer_constraints.cpu_domain_supported = false;
buffer_constraints.heap_permitted_count = 1;
buffer_constraints.heap_permitted[0] = fuchsia_sysmem_HeapType_SYSTEM_RAM;
unsigned image_constraints_count = 0;
for (unsigned i = 0; i < countof(image_types); ++i) {
// Skip if image type was specified and different from current type. This
// makes it possible for a different participant to select preferred
// modifiers.
if (config->type && config->type != image_types[i]) {
continue;
}
fuchsia_sysmem_ImageFormatConstraints& image_constraints =
constraints.image_format_constraints[image_constraints_count++];
switch (config->pixel_format) {
case ZX_PIXEL_FORMAT_ARGB_8888:
case ZX_PIXEL_FORMAT_RGB_x888:
image_constraints.pixel_format.type = fuchsia_sysmem_PixelFormatType_BGRA32;
break;
case ZX_PIXEL_FORMAT_ABGR_8888:
case ZX_PIXEL_FORMAT_BGR_888x:
image_constraints.pixel_format.type = fuchsia_sysmem_PixelFormatType_R8G8B8A8;
break;
}
image_constraints.pixel_format.has_format_modifier = true;
switch (image_types[i]) {
case IMAGE_TYPE_SIMPLE:
image_constraints.pixel_format.format_modifier.value =
fuchsia_sysmem_FORMAT_MODIFIER_LINEAR;
image_constraints.bytes_per_row_divisor = 64;
image_constraints.start_offset_divisor = 64;
break;
case IMAGE_TYPE_X_TILED:
image_constraints.pixel_format.format_modifier.value =
fuchsia_sysmem_FORMAT_MODIFIER_INTEL_I915_X_TILED;
image_constraints.start_offset_divisor = 4096;
image_constraints.bytes_per_row_divisor = 1; // Not meaningful
break;
case IMAGE_TYPE_Y_LEGACY_TILED:
image_constraints.pixel_format.format_modifier.value =
fuchsia_sysmem_FORMAT_MODIFIER_INTEL_I915_Y_TILED;
image_constraints.start_offset_divisor = 4096;
image_constraints.bytes_per_row_divisor = 1; // Not meaningful
break;
case IMAGE_TYPE_YF_TILED:
image_constraints.pixel_format.format_modifier.value =
fuchsia_sysmem_FORMAT_MODIFIER_INTEL_I915_YF_TILED;
image_constraints.start_offset_divisor = 4096;
image_constraints.bytes_per_row_divisor = 1; // Not meaningful
break;
}
image_constraints.color_spaces_count = 1;
image_constraints.color_space[0].type = fuchsia_sysmem_ColorSpaceType_SRGB;
image_constraints.min_coded_width = 0;
image_constraints.max_coded_width = 0xffffffff;
image_constraints.min_coded_height = 0;
image_constraints.max_coded_height = 0xffffffff;
image_constraints.min_bytes_per_row = 0;
image_constraints.max_bytes_per_row = 0xffffffff;
image_constraints.max_coded_width_times_coded_height = 0xffffffff;
image_constraints.layers = 1;
image_constraints.coded_width_divisor = 1;
image_constraints.coded_height_divisor = 1;
image_constraints.display_width_divisor = 1;
image_constraints.display_height_divisor = 1;
}
constraints.image_format_constraints_count = image_constraints_count;
zx_status_t status =
fuchsia_sysmem_BufferCollectionSetConstraints(collection, true, &constraints);
if (status != ZX_OK) {
zxlogf(ERROR, "Failed to set constraints");
return status;
}
return ZX_OK;
}
// Intel GPU core methods
zx_status_t Controller::ReadPciConfig16(uint16_t addr, uint16_t* value_out) {
return pci_config_read16(&pci_, addr, value_out);
}
zx_status_t Controller::MapPciMmio(uint32_t pci_bar, uint8_t** addr_out, uint64_t* size_out) {
if (pci_bar > PCI_MAX_BAR_COUNT) {
return ZX_ERR_INVALID_ARGS;
}
fbl::AutoLock lock(&bar_lock_);
if (mapped_bars_[pci_bar].count == 0) {
zx_status_t status = pci_map_bar_buffer(&pci_, pci_bar, ZX_CACHE_POLICY_UNCACHED_DEVICE,
&mapped_bars_[pci_bar].mmio);
if (status != ZX_OK) {
return status;
}
}
// TODO(fxbug.dev/56253): Add MMIO_PTR to cast.
*addr_out = (uint8_t*)mapped_bars_[pci_bar].mmio.vaddr;
*size_out = mapped_bars_[pci_bar].mmio.size;
mapped_bars_[pci_bar].count++;
return ZX_OK;
}
zx_status_t Controller::UnmapPciMmio(uint32_t pci_bar) {
if (pci_bar > PCI_MAX_BAR_COUNT) {
return ZX_ERR_INVALID_ARGS;
}
fbl::AutoLock lock(&bar_lock_);
if (mapped_bars_[pci_bar].count == 0) {
return ZX_OK;
}
if (--mapped_bars_[pci_bar].count == 0) {
mmio_buffer_release(&mapped_bars_[pci_bar].mmio);
}
return ZX_OK;
}
zx_status_t Controller::GetPciBti(uint32_t index, zx_handle_t* bti_out) {
return pci_get_bti(&pci_, index, bti_out);
}
zx_status_t Controller::RegisterInterruptCallback(const zx_intel_gpu_core_interrupt_t* callback,
uint32_t interrupt_mask) {
return interrupts_.SetInterruptCallback(callback, interrupt_mask);
}
zx_status_t Controller::UnregisterInterruptCallback() {
constexpr zx_intel_gpu_core_interrupt_t kNoCallback = {nullptr, nullptr};
interrupts_.SetInterruptCallback(&kNoCallback, 0);
return ZX_OK;
}
uint64_t Controller::GttGetSize() {
fbl::AutoLock lock(&gtt_lock_);
return gtt_.size();
}
zx_status_t Controller::GttAlloc(uint64_t page_count, uint64_t* addr_out) {
uint64_t length = page_count * PAGE_SIZE;
fbl::AutoLock lock(&gtt_lock_);
if (length > gtt_.size()) {
return ZX_ERR_INVALID_ARGS;
}
std::unique_ptr<GttRegion> region;
zx_status_t status =
gtt_.AllocRegion(static_cast<uint32_t>(page_count * PAGE_SIZE), PAGE_SIZE, &region);
if (status != ZX_OK) {
return status;
}
*addr_out = region->base();
imported_gtt_regions_.push_back(std::move(region));
return ZX_OK;
}
zx_status_t Controller::GttFree(uint64_t addr) {
fbl::AutoLock lock(&gtt_lock_);
for (unsigned i = 0; i < imported_gtt_regions_.size(); i++) {
if (imported_gtt_regions_[i]->base() == addr) {
imported_gtt_regions_.erase(i)->ClearRegion();
return ZX_OK;
}
}
return ZX_ERR_INVALID_ARGS;
}
zx_status_t Controller::GttClear(uint64_t addr) {
fbl::AutoLock lock(&gtt_lock_);
for (unsigned i = 0; i < imported_gtt_regions_.size(); i++) {
if (imported_gtt_regions_[i]->base() == addr) {
imported_gtt_regions_[i]->ClearRegion();
return ZX_OK;
}
}
return ZX_ERR_INVALID_ARGS;
}
zx_status_t Controller::GttInsert(uint64_t addr, zx_handle_t buffer, uint64_t page_offset,
uint64_t page_count) {
fbl::AutoLock lock(&gtt_lock_);
for (unsigned i = 0; i < imported_gtt_regions_.size(); i++) {
if (imported_gtt_regions_[i]->base() == addr) {
return imported_gtt_regions_[i]->PopulateRegion(buffer, page_offset, page_count * PAGE_SIZE,
true /* writable */);
}
}
return ZX_ERR_INVALID_ARGS;
}
void Controller::GpuRelease() {
gpu_released_ = true;
if (display_released_) {
delete this;
}
}
// I2C methods
uint32_t Controller::GetBusCount() { return registers::kDdiCount * 2; }
static constexpr size_t kMaxTxSize = 255;
zx_status_t Controller::GetMaxTransferSize(uint32_t bus_id, size_t* out_size) {
*out_size = kMaxTxSize;
return ZX_OK;
}
zx_status_t Controller::SetBitrate(uint32_t bus_id, uint32_t bitrate) {
// no-op for now
return ZX_OK;
}
zx_status_t Controller::Transact(uint32_t bus_id, const i2c_impl_op_t* ops, size_t count) {
for (unsigned i = 0; i < count; i++) {
if (ops[i].data_size > kMaxTxSize) {
return ZX_ERR_INVALID_ARGS;
}
}
if (!ops[count - 1].stop) {
return ZX_ERR_INVALID_ARGS;
}
if (bus_id < registers::kDdiCount) {
return gmbus_i2cs_[bus_id].I2cTransact(ops, count);
} else if (bus_id < 2 * registers::kDdiCount) {
bus_id -= registers::kDdiCount;
return dp_auxs_[bus_id].I2cTransact(ops, count);
} else {
return ZX_ERR_NOT_FOUND;
}
}
bool Controller::DpcdRead(registers::Ddi ddi, uint32_t addr, uint8_t* buf, size_t size) {
return dp_auxs_[ddi].DpcdRead(addr, buf, size);
}
bool Controller::DpcdWrite(registers::Ddi ddi, uint32_t addr, const uint8_t* buf, size_t size) {
return dp_auxs_[ddi].DpcdWrite(addr, buf, size);
}
// Ddk methods
void Controller::DdkUnbind(ddk::UnbindTxn txn) {
device_async_remove(zx_gpu_dev_);
{
fbl::AutoLock lock(&display_lock_);
display_devices_.reset();
}
txn.Reply();
}
void Controller::DdkRelease() {
display_released_ = true;
if (gpu_released_) {
delete this;
}
}
zx_status_t Controller::DdkGetProtocol(uint32_t proto_id, void* out) {
if (proto_id == ZX_PROTOCOL_DISPLAY_CONTROLLER_IMPL) {
auto ops = static_cast<display_controller_impl_protocol_t*>(out);
ops->ctx = this;
ops->ops = static_cast<display_controller_impl_protocol_ops_t*>(ddk_proto_ops_);
} else if (proto_id == ZX_PROTOCOL_I2C_IMPL) {
auto ops = static_cast<i2c_impl_protocol_t*>(out);
ops->ctx = this;
ops->ops = &i2c_ops;
} else {
return ZX_ERR_NOT_SUPPORTED;
}
return ZX_OK;
}
void Controller::DdkSuspend(ddk::SuspendTxn txn) {
// TODO(fxbug.dev/43204): Implement the suspend hook based on suspendtxn
if (txn.suspend_reason() == DEVICE_SUSPEND_REASON_MEXEC) {
uint32_t format, width, height, stride;
// Please do not use get_root_resource() in new code. See fxbug.dev/31358.
if (zx_framebuffer_get_info(get_root_resource(), &format, &width, &height, &stride) != ZX_OK) {
txn.Reply(ZX_OK, txn.requested_state());
return;
}
// The bootloader framebuffer is most likely at the start of the display
// controller's bar 2. Try to get that buffer working again across the
// mexec by mapping gfx stolen memory to gaddr 0.
auto bdsm_reg = registers::BaseDsm::Get().FromValue(0);
zx_status_t status = pci_config_read32(&pci_, bdsm_reg.kAddr, bdsm_reg.reg_value_ptr());
if (status != ZX_OK) {
zxlogf(TRACE, "Failed to read dsm base");
txn.Reply(ZX_OK, txn.requested_state());
return;
}
// The Intel docs say that the first page should be reserved for the gfx
// hardware, but a lot of BIOSes seem to ignore that.
uintptr_t fb = bdsm_reg.base_phys_addr() << bdsm_reg.base_phys_addr_shift;
uint32_t fb_size = stride * height * ZX_PIXEL_FORMAT_BYTES(format);
{
fbl::AutoLock lock(&gtt_lock_);
gtt_.SetupForMexec(fb, fb_size);
}
// Try to map the framebuffer and clear it. If not, oh well.
mmio_buffer_t mmio;
if (pci_map_bar_buffer(&pci_, 2, ZX_CACHE_POLICY_WRITE_COMBINING, &mmio) == ZX_OK) {
// TODO(fxbug.dev/56253): Add MMIO_PTR to cast.
memset((void*)mmio.vaddr, 0, fb_size);
mmio_buffer_release(&mmio);
}
{
fbl::AutoLock lock(&display_lock_);
for (auto& display : display_devices_) {
if (display->pipe() == nullptr) {
continue;
}
// TODO(fxbug.dev/31310): Reset/scale the display to ensure the buffer displays properly
registers::PipeRegs pipe_regs(display->pipe()->pipe());
auto plane_stride = pipe_regs.PlaneSurfaceStride(0).ReadFrom(mmio_space());
plane_stride.set_stride(width_in_tiles(IMAGE_TYPE_SIMPLE, width, format));
plane_stride.WriteTo(mmio_space());
auto plane_surface = pipe_regs.PlaneSurface(0).ReadFrom(mmio_space());
plane_surface.set_surface_base_addr(0);
plane_surface.WriteTo(mmio_space());
}
}
}
txn.Reply(ZX_OK, txn.requested_state());
}
void Controller::DdkResume(ddk::ResumeTxn txn) {
fbl::AutoLock lock(&display_lock_);
BringUpDisplayEngine(true);
registers::PanelPowerDivisor::Get().FromValue(pp_divisor_val_).WriteTo(mmio_space());
registers::PanelPowerOffDelay::Get().FromValue(pp_off_delay_val_).WriteTo(mmio_space());
registers::PanelPowerOnDelay::Get().FromValue(pp_on_delay_val_).WriteTo(mmio_space());
registers::SouthBacklightCtl1::Get()
.FromValue(0)
.set_polarity(sblc_polarity_)
.WriteTo(mmio_space());
registers::SouthBacklightCtl2::Get().FromValue(sblc_ctrl2_val_).WriteTo(mmio_space());
registers::SChicken1::Get().FromValue(schicken1_val_).WriteTo(mmio_space());
registers::DdiRegs(registers::DDI_A)
.DdiBufControl()
.ReadFrom(mmio_space())
.set_ddi_a_lane_capability_control(ddi_a_lane_capability_control_)
.WriteTo(mmio_space());
for (auto& disp : display_devices_) {
if (!disp->Resume()) {
zxlogf(ERROR, "Failed to resume display");
}
}
interrupts_.Resume();
txn.Reply(ZX_OK, DEV_POWER_STATE_D0, txn.requested_state());
}
// TODO(stevensd): Move this back into ::Bind once long-running binds don't
// break devmgr's suspend/mexec.
void Controller::FinishInit() {
zxlogf(TRACE, "i915: initializing displays");
for (auto& pipe : pipes_) {
pipe.Init();
}
InitDisplays();
{
fbl::AutoLock lock(&display_lock_);
uint32_t size = static_cast<uint32_t>(display_devices_.size());
if (size && dc_intf_.is_valid()) {
DisplayDevice* added_displays[registers::kDdiCount];
for (unsigned i = 0; i < size; i++) {
added_displays[i] = display_devices_[i].get();
}
CallOnDisplaysChanged(added_displays, size, NULL, 0);
}
ready_for_callback_ = true;
}
interrupts_.FinishInit();
// TODO remove when the gfxconsole moves to user space
EnableBacklight(true);
zxlogf(TRACE, "i915: initialization done");
}
zx_status_t Controller::Bind(std::unique_ptr<i915::Controller>* controller_ptr) {
zxlogf(TRACE, "Binding to display controller");
zx_status_t status = device_get_protocol(parent(), ZX_PROTOCOL_SYSMEM, &sysmem_);
if (status != ZX_OK) {
zxlogf(ERROR, "Could not get Display SYSMEM protocol");
return status;
}
if (device_get_protocol(parent_, ZX_PROTOCOL_PCI, &pci_)) {
return ZX_ERR_NOT_SUPPORTED;
}
pci_config_read16(&pci_, PCI_CONFIG_DEVICE_ID, &device_id_);
zxlogf(TRACE, "Device id %x", device_id_);
if (device_id_ == INTEL_I915_BROADWELL_DID) {
// TODO: this should be based on the specific target
flags_ |= FLAGS_BACKLIGHT;
}
status = igd_opregion_.Init(&pci_);
if (status != ZX_OK) {
zxlogf(ERROR, "Failed to init VBT (%d)", status);
return status;
}
zxlogf(TRACE, "Mapping registers");
// map register window
uint8_t* regs;
uint64_t size;
status = MapPciMmio(0u, &regs, &size);
if (status != ZX_OK) {
zxlogf(ERROR, "Failed to map bar 0: %d", status);
return status;
}
{
fbl::AutoLock lock(&bar_lock_);
fbl::AllocChecker ac;
mmio_space_ = ddk::MmioBuffer(mapped_bars_[0].mmio);
}
for (unsigned i = 0; i < registers::kDdiCount; i++) {
gmbus_i2cs_[i].set_mmio_space(mmio_space());
dp_auxs_[i].set_mmio_space(mmio_space());
}
pp_divisor_val_ = registers::PanelPowerDivisor::Get().ReadFrom(mmio_space()).reg_value();
pp_off_delay_val_ = registers::PanelPowerOffDelay::Get().ReadFrom(mmio_space()).reg_value();
pp_on_delay_val_ = registers::PanelPowerOnDelay::Get().ReadFrom(mmio_space()).reg_value();
sblc_ctrl2_val_ = registers::SouthBacklightCtl2::Get().ReadFrom(mmio_space()).reg_value();
schicken1_val_ = registers::SChicken1::Get().ReadFrom(mmio_space()).reg_value();
sblc_polarity_ = registers::SouthBacklightCtl1::Get().ReadFrom(mmio_space()).polarity();
ddi_a_lane_capability_control_ = registers::DdiRegs(registers::DDI_A)
.DdiBufControl()
.ReadFrom(mmio_space())
.ddi_a_lane_capability_control();
zxlogf(TRACE, "Initialzing hotplug");
status = interrupts_.Init();
if (status != ZX_OK) {
zxlogf(ERROR, "Failed to init hotplugging");
return status;
}
zxlogf(TRACE, "Mapping gtt");
{
fbl::AutoLock lock(&gtt_lock_);
if ((status = gtt_.Init(this)) != ZX_OK) {
zxlogf(ERROR, "Failed to init gtt (%d)", status);
return status;
}
}
status = DdkAdd("intel_i915");
if (status != ZX_OK) {
zxlogf(ERROR, "Failed to add controller device");
return status;
}
// DevMgr now owns this pointer, release it to avoid destroying the object
// when device goes out of scope.
__UNUSED auto ptr = controller_ptr->release();
i915_gpu_core_device_proto.version = DEVICE_OPS_VERSION;
i915_gpu_core_device_proto.release = gpu_release;
// zx_gpu_dev_ is removed when unbind is called for zxdev() (in ::DdkUnbind),
// so it's not necessary to give it its own unbind method.
device_add_args_t args = {};
args.version = DEVICE_ADD_ARGS_VERSION;
args.name = "intel-gpu-core";
args.ctx = this;
args.ops = &i915_gpu_core_device_proto;
args.proto_id = ZX_PROTOCOL_INTEL_GPU_CORE;
args.proto_ops = &i915_gpu_core_protocol_ops;
status = device_add(zxdev(), &args, &zx_gpu_dev_);
if (status != ZX_OK) {
zxlogf(ERROR, "Failed to publish gpu core device (%d)", status);
return status;
}
zxlogf(TRACE, "bind done");
status = thrd_create_with_name(&init_thread_, finish_init, this, "i915-init-thread");
if (status != ZX_OK) {
zxlogf(ERROR, "Failed to create init thread");
DdkAsyncRemove();
return status;
}
init_thrd_started_ = true;
return ZX_OK;
}
Controller::Controller(zx_device_t* parent) : DeviceType(parent), interrupts_(this), power_(this) {
mtx_init(&display_lock_, mtx_plain);
mtx_init(&gtt_lock_, mtx_plain);
mtx_init(&bar_lock_, mtx_plain);
}
Controller::~Controller() {
if (init_thrd_started_) {
thrd_join(init_thread_, nullptr);
}
interrupts_.Destroy();
if (mmio_space()) {
EnableBacklight(false);
for (unsigned i = 0; i < registers::kPipeCount; i++) {
fbl::AutoLock lock(&display_lock_);
pipes_[i].Reset();
}
}
// Release anything leaked by the gpu-core client.
fbl::AutoLock lock(&bar_lock_);
// Start at 1, because we treat bar 0 specially.
for (unsigned i = 1; i < PCI_MAX_BAR_COUNT; i++) {
if (mapped_bars_[i].count) {
zxlogf(WARNING, "Leaked bar %d", i);
mapped_bars_[i].count = 1;
UnmapPciMmio(i);
}
}
// bar 0 should have at most one ref left, otherwise log a leak like above and correct it.
// We will leave it with one ref, because mmio_space_ will unmap it on destruction, and
// we may need to access mmio_space_ while destroying member variables.
if (mapped_bars_[0].count != mmio_space_.has_value()) {
zxlogf(WARNING, "Leaked bar 0");
if (mapped_bars_[0].count > 0) {
mapped_bars_[0].count = 1;
}
}
}
} // namespace i915
zx_status_t intel_i915_bind(void* ctx, zx_device_t* parent) {
fbl::AllocChecker ac;
std::unique_ptr<i915::Controller> controller(new (&ac) i915::Controller(parent));
if (!ac.check()) {
return ZX_ERR_NO_MEMORY;
}
return controller->Bind(&controller);
}
#define INTEL_I915_VID (0x8086)
static constexpr zx_driver_ops_t intel_i915_driver_ops = []() {
zx_driver_ops_t ops = {};
ops.version = DRIVER_OPS_VERSION;
ops.bind = intel_i915_bind;
return ops;
}();
// clang-format off
ZIRCON_DRIVER(intel_i915, intel_i915_driver_ops, "zircon", "0.1");