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/* SPDX-License-Identifier: MIT */
/*
* Copyright (C) 2013-2017 Oracle Corporation
* This file is based on ast_drv.h
* Copyright 2012 Red Hat Inc.
* Authors: Dave Airlie <airlied@redhat.com>
* Michael Thayer <michael.thayer@oracle.com,
* Hans de Goede <hdegoede@redhat.com>
*/
#ifndef __VBOX_DRV_H__
#define __VBOX_DRV_H__
#include <linux/genalloc.h>
#include <linux/io.h>
#include <linux/irqreturn.h>
#include <linux/string.h>
#include <drm/drm_encoder.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_vram_helper.h>
#include "vboxvideo_guest.h"
#include "vboxvideo_vbe.h"
#include "hgsmi_ch_setup.h"
#define DRIVER_NAME "vboxvideo"
#define DRIVER_DESC "Oracle VM VirtualBox Graphics Card"
#define DRIVER_DATE "20130823"
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
#define DRIVER_PATCHLEVEL 0
#define VBOX_MAX_CURSOR_WIDTH 64
#define VBOX_MAX_CURSOR_HEIGHT 64
#define CURSOR_PIXEL_COUNT (VBOX_MAX_CURSOR_WIDTH * VBOX_MAX_CURSOR_HEIGHT)
#define CURSOR_DATA_SIZE (CURSOR_PIXEL_COUNT * 4 + CURSOR_PIXEL_COUNT / 8)
#define VBOX_MAX_SCREENS 32
#define GUEST_HEAP_OFFSET(vbox) ((vbox)->full_vram_size - \
VBVA_ADAPTER_INFORMATION_SIZE)
#define GUEST_HEAP_SIZE VBVA_ADAPTER_INFORMATION_SIZE
#define GUEST_HEAP_USABLE_SIZE (VBVA_ADAPTER_INFORMATION_SIZE - \
sizeof(struct hgsmi_host_flags))
#define HOST_FLAGS_OFFSET GUEST_HEAP_USABLE_SIZE
struct vbox_private {
/* Must be first; or we must define our own release callback */
struct drm_device ddev;
u8 __iomem *guest_heap;
u8 __iomem *vbva_buffers;
struct gen_pool *guest_pool;
struct vbva_buf_ctx *vbva_info;
bool any_pitch;
u32 num_crtcs;
/* Amount of available VRAM, including space used for buffers. */
u32 full_vram_size;
/* Amount of available VRAM, not including space used for buffers. */
u32 available_vram_size;
/* Array of structures for receiving mode hints. */
struct vbva_modehint *last_mode_hints;
int fb_mtrr;
struct mutex hw_mutex; /* protects modeset and accel/vbva accesses */
struct work_struct hotplug_work;
u32 input_mapping_width;
u32 input_mapping_height;
/*
* Is user-space using an X.Org-style layout of one large frame-buffer
* encompassing all screen ones or is the fbdev console active?
*/
bool single_framebuffer;
u8 cursor_data[CURSOR_DATA_SIZE];
};
#undef CURSOR_PIXEL_COUNT
#undef CURSOR_DATA_SIZE
struct vbox_connector {
struct drm_connector base;
char name[32];
struct vbox_crtc *vbox_crtc;
struct {
u32 width;
u32 height;
bool disconnected;
} mode_hint;
};
struct vbox_crtc {
struct drm_crtc base;
bool disconnected;
unsigned int crtc_id;
u32 fb_offset;
bool cursor_enabled;
u32 x_hint;
u32 y_hint;
/*
* When setting a mode we not only pass the mode to the hypervisor,
* but also information on how to map / translate input coordinates
* for the emulated USB tablet. This input-mapping may change when
* the mode on *another* crtc changes.
*
* This means that sometimes we must do a modeset on other crtc-s then
* the one being changed to update the input-mapping. Including crtc-s
* which may be disabled inside the guest (shown as a black window
* on the host unless closed by the user).
*
* With atomic modesetting the mode-info of disabled crtcs gets zeroed
* yet we need it when updating the input-map to avoid resizing the
* window as a side effect of a mode_set on another crtc. Therefor we
* cache the info of the last mode below.
*/
u32 width;
u32 height;
u32 x;
u32 y;
};
struct vbox_encoder {
struct drm_encoder base;
};
#define to_vbox_crtc(x) container_of(x, struct vbox_crtc, base)
#define to_vbox_connector(x) container_of(x, struct vbox_connector, base)
#define to_vbox_encoder(x) container_of(x, struct vbox_encoder, base)
#define to_vbox_dev(x) container_of(x, struct vbox_private, ddev)
bool vbox_check_supported(u16 id);
int vbox_hw_init(struct vbox_private *vbox);
void vbox_hw_fini(struct vbox_private *vbox);
int vbox_mode_init(struct vbox_private *vbox);
void vbox_mode_fini(struct vbox_private *vbox);
void vbox_report_caps(struct vbox_private *vbox);
int vbox_mm_init(struct vbox_private *vbox);
void vbox_mm_fini(struct vbox_private *vbox);
/* vbox_irq.c */
int vbox_irq_init(struct vbox_private *vbox);
void vbox_irq_fini(struct vbox_private *vbox);
void vbox_report_hotplug(struct vbox_private *vbox);
irqreturn_t vbox_irq_handler(int irq, void *arg);
/* vbox_hgsmi.c */
void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size,
u8 channel, u16 channel_info);
void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf);
int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf);
static inline void vbox_write_ioport(u16 index, u16 data)
{
outw(index, VBE_DISPI_IOPORT_INDEX);
outw(data, VBE_DISPI_IOPORT_DATA);
}
#endif
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