Angel Pons | 8a3453f | 2020-04-02 23:48:19 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Martin Roth | e20f3d0 | 2017-04-04 14:26:57 -0600 | [diff] [blame] | 2 | |
Ronald G. Minnich | cae09e0 | 2013-11-19 17:42:41 -0800 | [diff] [blame] | 3 | #include <stdint.h> |
Ronald G. Minnich | cae09e0 | 2013-11-19 17:42:41 -0800 | [diff] [blame] | 4 | #include <edid.h> |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 5 | #include <arch/io.h> |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 6 | #include <console/console.h> |
| 7 | #include <device/device.h> |
| 8 | #include <device/pci.h> |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 9 | #include <device/pci_ops.h> |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 10 | #include <device/pci_ids.h> |
Vladimir Serbinenko | db7d04d | 2014-02-22 10:35:45 +0100 | [diff] [blame] | 11 | #include <pc80/vga.h> |
| 12 | #include <pc80/vga_io.h> |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 13 | |
| 14 | /* VGA init. We use the Bochs VESA VBE extensions */ |
| 15 | #define VBE_DISPI_IOPORT_INDEX 0x01CE |
| 16 | #define VBE_DISPI_IOPORT_DATA 0x01CF |
| 17 | |
| 18 | #define VBE_DISPI_INDEX_ID 0x0 |
| 19 | #define VBE_DISPI_INDEX_XRES 0x1 |
| 20 | #define VBE_DISPI_INDEX_YRES 0x2 |
| 21 | #define VBE_DISPI_INDEX_BPP 0x3 |
| 22 | #define VBE_DISPI_INDEX_ENABLE 0x4 |
| 23 | #define VBE_DISPI_INDEX_BANK 0x5 |
| 24 | #define VBE_DISPI_INDEX_VIRT_WIDTH 0x6 |
| 25 | #define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7 |
| 26 | #define VBE_DISPI_INDEX_X_OFFSET 0x8 |
| 27 | #define VBE_DISPI_INDEX_Y_OFFSET 0x9 |
| 28 | #define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa |
| 29 | |
| 30 | #define VBE_DISPI_ID0 0xB0C0 |
| 31 | #define VBE_DISPI_ID1 0xB0C1 |
| 32 | #define VBE_DISPI_ID2 0xB0C2 |
| 33 | #define VBE_DISPI_ID4 0xB0C4 |
| 34 | #define VBE_DISPI_ID5 0xB0C5 |
| 35 | |
| 36 | #define VBE_DISPI_DISABLED 0x00 |
| 37 | #define VBE_DISPI_ENABLED 0x01 |
| 38 | #define VBE_DISPI_LFB_ENABLED 0x40 |
| 39 | #define VBE_DISPI_NOCLEARMEM 0x80 |
| 40 | |
| 41 | static int width = CONFIG_DRIVERS_EMULATION_QEMU_BOCHS_XRES; |
| 42 | static int height = CONFIG_DRIVERS_EMULATION_QEMU_BOCHS_YRES; |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 43 | |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 44 | static void bochs_write(struct resource *res, int index, int val) |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 45 | { |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 46 | if (res->flags & IORESOURCE_IO) { |
| 47 | outw(index, res->base); |
| 48 | outw(val, res->base + 1); |
| 49 | } else { |
| 50 | write16(res2mmio(res, 0x500 + index * 2, 0), val); |
| 51 | } |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 52 | } |
| 53 | |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 54 | static int bochs_read(struct resource *res, int index) |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 55 | { |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 56 | if (res->flags & IORESOURCE_IO) { |
| 57 | outw(index, res->base); |
| 58 | return inw(res->base + 1); |
| 59 | } else { |
| 60 | return read16(res2mmio(res, 0x500 + index * 2, 0)); |
| 61 | } |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 62 | } |
| 63 | |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 64 | static void bochs_vga_write(struct resource *res, int index, uint8_t val) |
| 65 | { |
| 66 | if (res->flags & IORESOURCE_IO) |
| 67 | outb(val, index + 0x3c0); |
| 68 | else |
| 69 | write8(res2mmio(res, (0x400 - 0x3c0) + index, 0), val); |
| 70 | } |
| 71 | |
| 72 | static struct resource res_legacy = { |
| 73 | VBE_DISPI_IOPORT_INDEX, |
| 74 | VBE_DISPI_IOPORT_DATA - VBE_DISPI_IOPORT_INDEX, |
| 75 | VBE_DISPI_IOPORT_DATA, |
| 76 | NULL, |
| 77 | IORESOURCE_IO, |
| 78 | 0, |
| 79 | 1, |
| 80 | 1 |
| 81 | }; |
| 82 | |
Nico Huber | 6d8266b | 2017-05-20 16:46:01 +0200 | [diff] [blame] | 83 | static void bochs_init_linear_fb(struct device *dev) |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 84 | { |
Gerd Hoffmann | 748a6b1 | 2013-11-25 17:12:07 +0100 | [diff] [blame] | 85 | struct edid edid; |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 86 | struct resource *res_fb, *res_io; |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 87 | int id, mem, bar; |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 88 | |
| 89 | res_fb = probe_resource(dev, PCI_BASE_ADDRESS_0); |
| 90 | if (res_fb && res_fb->flags & IORESOURCE_MEM) { |
| 91 | /* qemu -vga {std,qxl} */ |
| 92 | bar = 0; |
| 93 | } else { |
| 94 | res_fb = probe_resource(dev, PCI_BASE_ADDRESS_1); |
| 95 | if (res_fb && res_fb->flags & IORESOURCE_MEM) { |
| 96 | /* qemu -vga vmware */ |
| 97 | bar = 1; |
| 98 | } else { |
| 99 | printk(BIOS_ERR, "%s: Not bochs compatible\n", dev_name(dev)); |
| 100 | return; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /* MMIO bar supported since qemu 3.0+ */ |
| 105 | res_io = probe_resource(dev, PCI_BASE_ADDRESS_2); |
| 106 | if (((dev->class >> 8) == PCI_CLASS_DISPLAY_VGA) || |
| 107 | !res_io || !(res_io->flags & IORESOURCE_MEM)) { |
| 108 | printk(BIOS_DEBUG, "QEMU VGA: Using legacy VGA\n"); |
| 109 | res_io = &res_legacy; |
| 110 | } else { |
| 111 | printk(BIOS_DEBUG, "QEMU VGA: Using I/O bar at %llx\n", res_io->base); |
| 112 | } |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 113 | |
| 114 | /* bochs dispi detection */ |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 115 | id = bochs_read(res_io, VBE_DISPI_INDEX_ID); |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 116 | if ((id & 0xfff0) != VBE_DISPI_ID0) { |
| 117 | printk(BIOS_DEBUG, "QEMU VGA: bochs dispi: ID mismatch.\n"); |
| 118 | return; |
| 119 | } |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 120 | mem = bochs_read(res_io, VBE_DISPI_INDEX_VIDEO_MEMORY_64K) * 64 * 1024; |
Ronald G. Minnich | cae09e0 | 2013-11-19 17:42:41 -0800 | [diff] [blame] | 121 | |
| 122 | printk(BIOS_DEBUG, "QEMU VGA: bochs dispi interface found, " |
Elyes HAOUAS | a342f39 | 2018-10-17 10:56:26 +0200 | [diff] [blame] | 123 | "%d MiB video memory\n", mem / (1024 * 1024)); |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 124 | printk(BIOS_DEBUG, "QEMU VGA: framebuffer @ %llx (pci bar %d)\n", |
| 125 | res_fb->base, bar); |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 126 | |
| 127 | /* setup video mode */ |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 128 | bochs_write(res_io, VBE_DISPI_INDEX_ENABLE, 0); |
| 129 | bochs_write(res_io, VBE_DISPI_INDEX_BANK, 0); |
| 130 | bochs_write(res_io, VBE_DISPI_INDEX_BPP, 32); |
| 131 | bochs_write(res_io, VBE_DISPI_INDEX_XRES, width); |
| 132 | bochs_write(res_io, VBE_DISPI_INDEX_YRES, height); |
| 133 | bochs_write(res_io, VBE_DISPI_INDEX_VIRT_WIDTH, width); |
| 134 | bochs_write(res_io, VBE_DISPI_INDEX_VIRT_HEIGHT, height); |
| 135 | bochs_write(res_io, VBE_DISPI_INDEX_X_OFFSET, 0); |
| 136 | bochs_write(res_io, VBE_DISPI_INDEX_Y_OFFSET, 0); |
| 137 | bochs_write(res_io, VBE_DISPI_INDEX_ENABLE, |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 138 | VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED); |
| 139 | |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 140 | bochs_vga_write(res_io, 0, 0x20); /* disable blanking */ |
Gerd Hoffmann | 748a6b1 | 2013-11-25 17:12:07 +0100 | [diff] [blame] | 141 | |
| 142 | /* setup coreboot framebuffer */ |
Gerd Hoffmann | 0bc3e325 | 2015-09-04 12:58:00 +0200 | [diff] [blame] | 143 | edid.mode.ha = width; |
| 144 | edid.mode.va = height; |
Gerd Hoffmann | 4f62732 | 2014-08-27 10:42:47 +0200 | [diff] [blame] | 145 | edid.panel_bits_per_color = 8; |
| 146 | edid.panel_bits_per_pixel = 24; |
Julius Werner | 2b6db97 | 2016-04-06 12:50:40 -0700 | [diff] [blame] | 147 | edid_set_framebuffer_bits_per_pixel(&edid, 32, 0); |
Patrick Rudolph | efaf1b3 | 2020-05-14 16:37:46 +0200 | [diff] [blame] | 148 | set_vbe_mode_info_valid(&edid, res_fb->base); |
Nico Huber | 6d8266b | 2017-05-20 16:46:01 +0200 | [diff] [blame] | 149 | } |
| 150 | |
| 151 | static void bochs_init_text_mode(struct device *dev) |
| 152 | { |
Vladimir Serbinenko | db7d04d | 2014-02-22 10:35:45 +0100 | [diff] [blame] | 153 | vga_misc_write(0x1); |
| 154 | vga_textmode_init(); |
Nico Huber | 6d8266b | 2017-05-20 16:46:01 +0200 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | static void bochs_init(struct device *dev) |
| 158 | { |
Julius Werner | cd49cce | 2019-03-05 16:53:33 -0800 | [diff] [blame] | 159 | if (CONFIG(LINEAR_FRAMEBUFFER)) |
Nico Huber | 6d8266b | 2017-05-20 16:46:01 +0200 | [diff] [blame] | 160 | bochs_init_linear_fb(dev); |
Julius Werner | cd49cce | 2019-03-05 16:53:33 -0800 | [diff] [blame] | 161 | else if (CONFIG(VGA_TEXT_FRAMEBUFFER)) |
Nico Huber | 6d8266b | 2017-05-20 16:46:01 +0200 | [diff] [blame] | 162 | bochs_init_text_mode(dev); |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | static struct device_operations qemu_graph_ops = { |
| 166 | .read_resources = pci_dev_read_resources, |
| 167 | .set_resources = pci_dev_set_resources, |
| 168 | .enable_resources = pci_dev_enable_resources, |
| 169 | .init = bochs_init, |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 170 | }; |
| 171 | |
| 172 | static const struct pci_driver qemu_stdvga_driver __pci_driver = { |
| 173 | .ops = &qemu_graph_ops, |
| 174 | .vendor = 0x1234, |
| 175 | .device = 0x1111, |
| 176 | }; |
| 177 | |
| 178 | static const struct pci_driver qemu_vmware_driver __pci_driver = { |
| 179 | .ops = &qemu_graph_ops, |
| 180 | .vendor = 0x15ad, |
| 181 | .device = 0x0405, |
| 182 | }; |
| 183 | static const struct pci_driver qemu_qxl_driver __pci_driver = { |
| 184 | .ops = &qemu_graph_ops, |
| 185 | .vendor = 0x1b36, |
| 186 | .device = 0x0100, |
| 187 | }; |