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/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Atomic.h>
#include <AK/Checked.h>
#include <AK/Try.h>
#include <Kernel/Bus/PCI/API.h>
#include <Kernel/Bus/PCI/IDs.h>
#include <Kernel/Graphics/Console/ContiguousFramebufferConsole.h>
#include <Kernel/Graphics/GraphicsManagement.h>
#include <Kernel/Graphics/VMWare/Definitions.h>
#include <Kernel/Graphics/VMWare/DisplayConnector.h>
#include <Kernel/Graphics/VMWare/GraphicsAdapter.h>
#include <Kernel/IOWindow.h>
#include <Kernel/Memory/TypedMapping.h>
#include <Kernel/Sections.h>
namespace Kernel {
ErrorOr<bool> VMWareGraphicsAdapter::probe(PCI::DeviceIdentifier const& pci_device_identifier)
{
PCI::HardwareID id = pci_device_identifier.hardware_id();
// Note: We only support VMWare SVGA II adapter
return id.vendor_id == PCI::VendorID::VMWare && id.device_id == 0x0405;
}
ErrorOr<NonnullLockRefPtr<GenericGraphicsAdapter>> VMWareGraphicsAdapter::create(PCI::DeviceIdentifier const& pci_device_identifier)
{
auto registers_io_window = TRY(IOWindow::create_for_pci_device_bar(pci_device_identifier, PCI::HeaderType0BaseRegister::BAR0));
auto adapter = TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) VMWareGraphicsAdapter(pci_device_identifier, move(registers_io_window))));
TRY(adapter->initialize_adapter());
return adapter;
}
UNMAP_AFTER_INIT VMWareGraphicsAdapter::VMWareGraphicsAdapter(PCI::DeviceIdentifier const& pci_device_identifier, NonnullOwnPtr<IOWindow> registers_io_window)
: PCI::Device(const_cast<PCI::DeviceIdentifier&>(pci_device_identifier))
, m_registers_io_window(move(registers_io_window))
{
dbgln("VMWare SVGA @ {}, {}", pci_device_identifier.address(), m_registers_io_window);
}
u32 VMWareGraphicsAdapter::read_io_register(VMWareDisplayRegistersOffset register_offset) const
{
SpinlockLocker locker(m_io_access_lock);
m_registers_io_window->write32(0, to_underlying(register_offset));
return m_registers_io_window->read32_unaligned(1);
}
void VMWareGraphicsAdapter::write_io_register(VMWareDisplayRegistersOffset register_offset, u32 value)
{
SpinlockLocker locker(m_io_access_lock);
m_registers_io_window->write32(0, to_underlying(register_offset));
m_registers_io_window->write32_unaligned(1, value);
}
UNMAP_AFTER_INIT ErrorOr<void> VMWareGraphicsAdapter::negotiate_device_version()
{
write_io_register(VMWareDisplayRegistersOffset::ID, vmware_svga_version_2_id);
auto accepted_version = read_io_register(VMWareDisplayRegistersOffset::ID);
dbgln("VMWare SVGA @ {}: Accepted version {}", device_identifier().address(), accepted_version);
if (read_io_register(VMWareDisplayRegistersOffset::ID) == vmware_svga_version_2_id)
return {};
return Error::from_errno(ENOTSUP);
}
UNMAP_AFTER_INIT ErrorOr<void> VMWareGraphicsAdapter::initialize_fifo_registers()
{
auto framebuffer_size = read_io_register(VMWareDisplayRegistersOffset::FB_SIZE);
auto fifo_size = read_io_register(VMWareDisplayRegistersOffset::MEM_SIZE);
auto fifo_physical_address = PhysicalAddress(PCI::get_BAR2(device_identifier()) & PCI::bar_address_mask);
dbgln("VMWare SVGA @ {}: framebuffer size {} bytes, FIFO size {} bytes @ {}", device_identifier().address(), framebuffer_size, fifo_size, fifo_physical_address);
if (framebuffer_size < 0x100000 || fifo_size < 0x10000) {
dbgln("VMWare SVGA @ {}: invalid framebuffer or fifo size", device_identifier().address());
return Error::from_errno(ENOTSUP);
}
m_fifo_registers = TRY(Memory::map_typed<VMWareDisplayFIFORegisters volatile>(fifo_physical_address, fifo_size, Memory::Region::Access::ReadWrite));
m_fifo_registers->start = 16;
m_fifo_registers->size = 16 + (10 * 1024);
m_fifo_registers->next_command = 16;
m_fifo_registers->stop = 16;
return {};
}
UNMAP_AFTER_INIT void VMWareGraphicsAdapter::print_svga_capabilities() const
{
auto svga_capabilities = read_io_register(VMWareDisplayRegistersOffset::CAPABILITIES);
dbgln("VMWare SVGA capabilities (raw {:x}):", svga_capabilities);
if (svga_capabilities & (1 << 1))
dbgln("\tRect copy");
if (svga_capabilities & (1 << 5))
dbgln("\tCursor");
if (svga_capabilities & (1 << 6))
dbgln("\tCursor Bypass");
if (svga_capabilities & (1 << 7))
dbgln("\tCursor Bypass 2");
if (svga_capabilities & (1 << 8))
dbgln("\t8 Bit emulation");
if (svga_capabilities & (1 << 9))
dbgln("\tAlpha Cursor");
if (svga_capabilities & (1 << 14))
dbgln("\t3D acceleration");
if (svga_capabilities & (1 << 15))
dbgln("\tExtended FIFO");
if (svga_capabilities & (1 << 16))
dbgln("\tMulti-monitor (legacy)");
if (svga_capabilities & (1 << 17))
dbgln("\tPitch lock");
if (svga_capabilities & (1 << 18))
dbgln("\tIRQ masking");
if (svga_capabilities & (1 << 19))
dbgln("\tDisplay topology");
if (svga_capabilities & (1 << 20))
dbgln("\tGMR");
if (svga_capabilities & (1 << 21))
dbgln("\tTraces");
if (svga_capabilities & (1 << 22))
dbgln("\tGMR2");
if (svga_capabilities & (1 << 23))
dbgln("\tScreen object 2");
}
ErrorOr<void> VMWareGraphicsAdapter::modeset_primary_screen_resolution(Badge<VMWareDisplayConnector>, size_t width, size_t height)
{
auto max_width = read_io_register(VMWareDisplayRegistersOffset::MAX_WIDTH);
auto max_height = read_io_register(VMWareDisplayRegistersOffset::MAX_HEIGHT);
if (width > max_width || height > max_height)
return Error::from_errno(ENOTSUP);
modeset_primary_screen_resolution(width, height);
return {};
}
size_t VMWareGraphicsAdapter::primary_screen_width(Badge<VMWareDisplayConnector>) const
{
SpinlockLocker locker(m_operation_lock);
return read_io_register(VMWareDisplayRegistersOffset::WIDTH);
}
size_t VMWareGraphicsAdapter::primary_screen_height(Badge<VMWareDisplayConnector>) const
{
SpinlockLocker locker(m_operation_lock);
return read_io_register(VMWareDisplayRegistersOffset::HEIGHT);
}
size_t VMWareGraphicsAdapter::primary_screen_pitch(Badge<VMWareDisplayConnector>) const
{
SpinlockLocker locker(m_operation_lock);
return read_io_register(VMWareDisplayRegistersOffset::BYTES_PER_LINE);
}
void VMWareGraphicsAdapter::primary_screen_flush(Badge<VMWareDisplayConnector>, size_t current_width, size_t current_height)
{
SpinlockLocker locker(m_operation_lock);
m_fifo_registers->start = 16;
m_fifo_registers->size = 16 + (10 * 1024);
m_fifo_registers->next_command = 16 + 4 * 5;
m_fifo_registers->stop = 16;
m_fifo_registers->commands[0] = 1;
m_fifo_registers->commands[1] = 0;
m_fifo_registers->commands[2] = 0;
m_fifo_registers->commands[3] = current_width;
m_fifo_registers->commands[4] = current_height;
write_io_register(VMWareDisplayRegistersOffset::SYNC, 1);
}
void VMWareGraphicsAdapter::modeset_primary_screen_resolution(size_t width, size_t height)
{
SpinlockLocker locker(m_operation_lock);
write_io_register(VMWareDisplayRegistersOffset::ENABLE, 0);
write_io_register(VMWareDisplayRegistersOffset::WIDTH, width);
write_io_register(VMWareDisplayRegistersOffset::HEIGHT, height);
write_io_register(VMWareDisplayRegistersOffset::BITS_PER_PIXEL, 32);
write_io_register(VMWareDisplayRegistersOffset::ENABLE, 1);
write_io_register(VMWareDisplayRegistersOffset::CONFIG_DONE, 1);
}
UNMAP_AFTER_INIT ErrorOr<void> VMWareGraphicsAdapter::initialize_adapter()
{
TRY(negotiate_device_version());
print_svga_capabilities();
TRY(initialize_fifo_registers());
// Note: enable the device by modesetting the primary screen resolution
modeset_primary_screen_resolution(640, 480);
auto bar1_space_size = PCI::get_BAR_space_size(device_identifier(), PCI::HeaderType0BaseRegister::BAR1);
m_display_connector = VMWareDisplayConnector::must_create(*this, PhysicalAddress(PCI::get_BAR1(device_identifier()) & PCI::bar_address_mask), bar1_space_size);
TRY(m_display_connector->set_safe_mode_setting());
return {};
}
}
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