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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | // SPDX-License-Identifier: MIT /* * Copyright (C) 2013-2017 Oracle Corporation * This file is based on ast_main.c * Copyright 2012 Red Hat Inc. * Authors: Dave Airlie <airlied@redhat.com>, * Michael Thayer <michael.thayer@oracle.com, * Hans de Goede <hdegoede@redhat.com> */ #include <linux/vbox_err.h> #include <drm/drm_fb_helper.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_damage_helper.h> #include "vbox_drv.h" #include "vboxvideo_guest.h" #include "vboxvideo_vbe.h" void vbox_report_caps(struct vbox_private *vbox) { u32 caps = VBVACAPS_DISABLE_CURSOR_INTEGRATION | VBVACAPS_IRQ | VBVACAPS_USE_VBVA_ONLY; /* The host only accepts VIDEO_MODE_HINTS if it is send separately. */ hgsmi_send_caps_info(vbox->guest_pool, caps); caps |= VBVACAPS_VIDEO_MODE_HINTS; hgsmi_send_caps_info(vbox->guest_pool, caps); } static int vbox_accel_init(struct vbox_private *vbox) { struct vbva_buffer *vbva; unsigned int i; vbox->vbva_info = devm_kcalloc(vbox->ddev.dev, vbox->num_crtcs, sizeof(*vbox->vbva_info), GFP_KERNEL); if (!vbox->vbva_info) return -ENOMEM; /* Take a command buffer for each screen from the end of usable VRAM. */ vbox->available_vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE; vbox->vbva_buffers = pci_iomap_range(vbox->ddev.pdev, 0, vbox->available_vram_size, vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE); if (!vbox->vbva_buffers) return -ENOMEM; for (i = 0; i < vbox->num_crtcs; ++i) { vbva_setup_buffer_context(&vbox->vbva_info[i], vbox->available_vram_size + i * VBVA_MIN_BUFFER_SIZE, VBVA_MIN_BUFFER_SIZE); vbva = (void __force *)vbox->vbva_buffers + i * VBVA_MIN_BUFFER_SIZE; if (!vbva_enable(&vbox->vbva_info[i], vbox->guest_pool, vbva, i)) { /* very old host or driver error. */ DRM_ERROR("vboxvideo: vbva_enable failed\n"); } } return 0; } static void vbox_accel_fini(struct vbox_private *vbox) { unsigned int i; for (i = 0; i < vbox->num_crtcs; ++i) vbva_disable(&vbox->vbva_info[i], vbox->guest_pool, i); } /* Do we support the 4.3 plus mode hint reporting interface? */ static bool have_hgsmi_mode_hints(struct vbox_private *vbox) { u32 have_hints, have_cursor; int ret; ret = hgsmi_query_conf(vbox->guest_pool, VBOX_VBVA_CONF32_MODE_HINT_REPORTING, &have_hints); if (ret) return false; ret = hgsmi_query_conf(vbox->guest_pool, VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING, &have_cursor); if (ret) return false; return have_hints == VINF_SUCCESS && have_cursor == VINF_SUCCESS; } bool vbox_check_supported(u16 id) { u16 dispi_id; vbox_write_ioport(VBE_DISPI_INDEX_ID, id); dispi_id = inw(VBE_DISPI_IOPORT_DATA); return dispi_id == id; } int vbox_hw_init(struct vbox_private *vbox) { int ret = -ENOMEM; vbox->full_vram_size = inl(VBE_DISPI_IOPORT_DATA); vbox->any_pitch = vbox_check_supported(VBE_DISPI_ID_ANYX); DRM_INFO("VRAM %08x\n", vbox->full_vram_size); /* Map guest-heap at end of vram */ vbox->guest_heap = pci_iomap_range(vbox->ddev.pdev, 0, GUEST_HEAP_OFFSET(vbox), GUEST_HEAP_SIZE); if (!vbox->guest_heap) return -ENOMEM; /* Create guest-heap mem-pool use 2^4 = 16 byte chunks */ vbox->guest_pool = devm_gen_pool_create(vbox->ddev.dev, 4, -1, "vboxvideo-accel"); if (!vbox->guest_pool) return -ENOMEM; ret = gen_pool_add_virt(vbox->guest_pool, (unsigned long)vbox->guest_heap, GUEST_HEAP_OFFSET(vbox), GUEST_HEAP_USABLE_SIZE, -1); if (ret) return ret; ret = hgsmi_test_query_conf(vbox->guest_pool); if (ret) { DRM_ERROR("vboxvideo: hgsmi_test_query_conf failed\n"); return ret; } /* Reduce available VRAM size to reflect the guest heap. */ vbox->available_vram_size = GUEST_HEAP_OFFSET(vbox); /* Linux drm represents monitors as a 32-bit array. */ hgsmi_query_conf(vbox->guest_pool, VBOX_VBVA_CONF32_MONITOR_COUNT, &vbox->num_crtcs); vbox->num_crtcs = clamp_t(u32, vbox->num_crtcs, 1, VBOX_MAX_SCREENS); if (!have_hgsmi_mode_hints(vbox)) { ret = -ENOTSUPP; return ret; } vbox->last_mode_hints = devm_kcalloc(vbox->ddev.dev, vbox->num_crtcs, sizeof(struct vbva_modehint), GFP_KERNEL); if (!vbox->last_mode_hints) return -ENOMEM; ret = vbox_accel_init(vbox); if (ret) return ret; return 0; } void vbox_hw_fini(struct vbox_private *vbox) { vbox_accel_fini(vbox); } |