| 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License as published by |
| 4 | * the Free Software Foundation; either version 2 of the License, or |
| 5 | * (at your option) any later version. |
| 6 | */ |
| 7 | |
| 8 | #include <linux/mm.h> |
| 9 | #include <linux/module.h> |
| 10 | #include <linux/slab.h> |
| 11 | #include <drm/drm_fb_helper.h> |
| 12 | |
| 13 | #include "bochs.h" |
| 14 | |
| 15 | static bool enable_fbdev = true; |
| 16 | module_param_named(fbdev, enable_fbdev, bool, 0444); |
| 17 | MODULE_PARM_DESC(fbdev, "register fbdev device"); |
| 18 | |
| 19 | /* ---------------------------------------------------------------------- */ |
| 20 | /* drm interface */ |
| 21 | |
| 22 | static int bochs_unload(struct drm_device *dev) |
| 23 | { |
| 24 | struct bochs_device *bochs = dev->dev_private; |
| 25 | |
| 26 | bochs_fbdev_fini(bochs); |
| 27 | bochs_kms_fini(bochs); |
| 28 | bochs_mm_fini(bochs); |
| 29 | bochs_hw_fini(dev); |
| 30 | kfree(bochs); |
| 31 | dev->dev_private = NULL; |
| 32 | return 0; |
| 33 | } |
| 34 | |
| 35 | static int bochs_load(struct drm_device *dev, unsigned long flags) |
| 36 | { |
| 37 | struct bochs_device *bochs; |
| 38 | int ret; |
| 39 | |
| 40 | bochs = kzalloc(sizeof(*bochs), GFP_KERNEL); |
| 41 | if (bochs == NULL) |
| 42 | return -ENOMEM; |
| 43 | dev->dev_private = bochs; |
| 44 | bochs->dev = dev; |
| 45 | |
| 46 | ret = bochs_hw_init(dev, flags); |
| 47 | if (ret) |
| 48 | goto err; |
| 49 | |
| 50 | ret = bochs_mm_init(bochs); |
| 51 | if (ret) |
| 52 | goto err; |
| 53 | |
| 54 | ret = bochs_kms_init(bochs); |
| 55 | if (ret) |
| 56 | goto err; |
| 57 | |
| 58 | if (enable_fbdev) |
| 59 | bochs_fbdev_init(bochs); |
| 60 | |
| 61 | return 0; |
| 62 | |
| 63 | err: |
| 64 | bochs_unload(dev); |
| 65 | return ret; |
| 66 | } |
| 67 | |
| 68 | static const struct file_operations bochs_fops = { |
| 69 | .owner = THIS_MODULE, |
| 70 | .open = drm_open, |
| 71 | .release = drm_release, |
| 72 | .unlocked_ioctl = drm_ioctl, |
| 73 | #ifdef CONFIG_COMPAT |
| 74 | .compat_ioctl = drm_compat_ioctl, |
| 75 | #endif |
| 76 | .poll = drm_poll, |
| 77 | .read = drm_read, |
| 78 | .llseek = no_llseek, |
| 79 | .mmap = bochs_mmap, |
| 80 | }; |
| 81 | |
| 82 | static struct drm_driver bochs_driver = { |
| 83 | .driver_features = DRIVER_GEM | DRIVER_MODESET, |
| 84 | .load = bochs_load, |
| 85 | .unload = bochs_unload, |
| 86 | .set_busid = drm_pci_set_busid, |
| 87 | .fops = &bochs_fops, |
| 88 | .name = "bochs-drm", |
| 89 | .desc = "bochs dispi vga interface (qemu stdvga)", |
| 90 | .date = "20130925", |
| 91 | .major = 1, |
| 92 | .minor = 0, |
| 93 | .gem_free_object_unlocked = bochs_gem_free_object, |
| 94 | .dumb_create = bochs_dumb_create, |
| 95 | .dumb_map_offset = bochs_dumb_mmap_offset, |
| 96 | .dumb_destroy = drm_gem_dumb_destroy, |
| 97 | }; |
| 98 | |
| 99 | /* ---------------------------------------------------------------------- */ |
| 100 | /* pm interface */ |
| 101 | |
| 102 | #ifdef CONFIG_PM_SLEEP |
| 103 | static int bochs_pm_suspend(struct device *dev) |
| 104 | { |
| 105 | struct pci_dev *pdev = to_pci_dev(dev); |
| 106 | struct drm_device *drm_dev = pci_get_drvdata(pdev); |
| 107 | struct bochs_device *bochs = drm_dev->dev_private; |
| 108 | |
| 109 | drm_kms_helper_poll_disable(drm_dev); |
| 110 | |
| 111 | if (bochs->fb.initialized) { |
| 112 | console_lock(); |
| 113 | drm_fb_helper_set_suspend(&bochs->fb.helper, 1); |
| 114 | console_unlock(); |
| 115 | } |
| 116 | |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | static int bochs_pm_resume(struct device *dev) |
| 121 | { |
| 122 | struct pci_dev *pdev = to_pci_dev(dev); |
| 123 | struct drm_device *drm_dev = pci_get_drvdata(pdev); |
| 124 | struct bochs_device *bochs = drm_dev->dev_private; |
| 125 | |
| 126 | drm_helper_resume_force_mode(drm_dev); |
| 127 | |
| 128 | if (bochs->fb.initialized) { |
| 129 | console_lock(); |
| 130 | drm_fb_helper_set_suspend(&bochs->fb.helper, 0); |
| 131 | console_unlock(); |
| 132 | } |
| 133 | |
| 134 | drm_kms_helper_poll_enable(drm_dev); |
| 135 | return 0; |
| 136 | } |
| 137 | #endif |
| 138 | |
| 139 | static const struct dev_pm_ops bochs_pm_ops = { |
| 140 | SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend, |
| 141 | bochs_pm_resume) |
| 142 | }; |
| 143 | |
| 144 | /* ---------------------------------------------------------------------- */ |
| 145 | /* pci interface */ |
| 146 | |
| 147 | static int bochs_kick_out_firmware_fb(struct pci_dev *pdev) |
| 148 | { |
| 149 | struct apertures_struct *ap; |
| 150 | |
| 151 | ap = alloc_apertures(1); |
| 152 | if (!ap) |
| 153 | return -ENOMEM; |
| 154 | |
| 155 | ap->ranges[0].base = pci_resource_start(pdev, 0); |
| 156 | ap->ranges[0].size = pci_resource_len(pdev, 0); |
| 157 | drm_fb_helper_remove_conflicting_framebuffers(ap, "bochsdrmfb", false); |
| 158 | kfree(ap); |
| 159 | |
| 160 | return 0; |
| 161 | } |
| 162 | |
| 163 | static int bochs_pci_probe(struct pci_dev *pdev, |
| 164 | const struct pci_device_id *ent) |
| 165 | { |
| 166 | int ret; |
| 167 | |
| 168 | ret = bochs_kick_out_firmware_fb(pdev); |
| 169 | if (ret) |
| 170 | return ret; |
| 171 | |
| 172 | return drm_get_pci_dev(pdev, ent, &bochs_driver); |
| 173 | } |
| 174 | |
| 175 | static void bochs_pci_remove(struct pci_dev *pdev) |
| 176 | { |
| 177 | struct drm_device *dev = pci_get_drvdata(pdev); |
| 178 | |
| 179 | drm_put_dev(dev); |
| 180 | } |
| 181 | |
| 182 | static const struct pci_device_id bochs_pci_tbl[] = { |
| 183 | { |
| 184 | .vendor = 0x1234, |
| 185 | .device = 0x1111, |
| 186 | .subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET, |
| 187 | .subdevice = PCI_SUBDEVICE_ID_QEMU, |
| 188 | .driver_data = BOCHS_QEMU_STDVGA, |
| 189 | }, |
| 190 | { |
| 191 | .vendor = 0x1234, |
| 192 | .device = 0x1111, |
| 193 | .subvendor = PCI_ANY_ID, |
| 194 | .subdevice = PCI_ANY_ID, |
| 195 | .driver_data = BOCHS_UNKNOWN, |
| 196 | }, |
| 197 | { /* end of list */ } |
| 198 | }; |
| 199 | |
| 200 | static struct pci_driver bochs_pci_driver = { |
| 201 | .name = "bochs-drm", |
| 202 | .id_table = bochs_pci_tbl, |
| 203 | .probe = bochs_pci_probe, |
| 204 | .remove = bochs_pci_remove, |
| 205 | .driver.pm = &bochs_pm_ops, |
| 206 | }; |
| 207 | |
| 208 | /* ---------------------------------------------------------------------- */ |
| 209 | /* module init/exit */ |
| 210 | |
| 211 | static int __init bochs_init(void) |
| 212 | { |
| 213 | return drm_pci_init(&bochs_driver, &bochs_pci_driver); |
| 214 | } |
| 215 | |
| 216 | static void __exit bochs_exit(void) |
| 217 | { |
| 218 | drm_pci_exit(&bochs_driver, &bochs_pci_driver); |
| 219 | } |
| 220 | |
| 221 | module_init(bochs_init); |
| 222 | module_exit(bochs_exit); |
| 223 | |
| 224 | MODULE_DEVICE_TABLE(pci, bochs_pci_tbl); |
| 225 | MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>"); |
| 226 | MODULE_LICENSE("GPL"); |