forked from KolibriOS/kolibrios
1119 lines
26 KiB
C
1119 lines
26 KiB
C
#include <syscall.h>
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#include <drm/drmP.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/pci.h>
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#include "vmwgfx_drv.h"
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#include <display.h>
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#define VMW_DEV_CLOSE 0
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#define VMW_DEV_INIT 1
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#define VMW_DEV_READY 2
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void cpu_detect1();
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int kmap_init();
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unsigned long volatile jiffies;
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int oops_in_progress;
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int x86_clflush_size;
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unsigned int tsc_khz;
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struct workqueue_struct *system_wq;
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int driver_wq_state;
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struct drm_device *main_device;
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struct drm_file *drm_file_handlers[256];
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int kms_modeset = 1;
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static char log[256];
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int vmw_init(void);
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int kms_init(struct drm_device *dev);
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void vmw_driver_thread();
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void parse_cmdline(char *cmdline, char *log);
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int _stdcall display_handler(ioctl_t *io);
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void kms_update();
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void vmw_fb_update(struct vmw_private *vmw_priv);
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int gem_getparam(struct drm_device *dev, void *data);
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void vmw_driver_thread()
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{
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struct vmw_private *dev_priv = NULL;
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struct workqueue_struct *cwq = NULL;
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unsigned long irqflags;
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printf("%s\n",__FUNCTION__);
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while(driver_wq_state == VMW_DEV_INIT)
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{
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jiffies = GetClockNs() / 10000000;
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delay(1);
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};
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if( driver_wq_state == VMW_DEV_CLOSE)
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{
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asm volatile ("int $0x40"::"a"(-1));
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};
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dev_priv = main_device->dev_private;
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cwq = system_wq;
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while(driver_wq_state != VMW_DEV_CLOSE )
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{
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jiffies = GetClockNs() / 10000000;
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// kms_update();
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spin_lock_irqsave(&cwq->lock, irqflags);
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while (!list_empty(&cwq->worklist))
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{
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struct work_struct *work = list_entry(cwq->worklist.next,
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struct work_struct, entry);
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work_func_t f = work->func;
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list_del_init(cwq->worklist.next);
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spin_unlock_irqrestore(&cwq->lock, irqflags);
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f(work);
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spin_lock_irqsave(&cwq->lock, irqflags);
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}
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spin_unlock_irqrestore(&cwq->lock, irqflags);
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vmw_fb_update(dev_priv);
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delay(2);
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};
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asm volatile ("int $0x40"::"a"(-1));
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}
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u32 __attribute__((externally_visible)) drvEntry(int action, char *cmdline)
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{
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static pci_dev_t device;
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const struct pci_device_id *ent;
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char *safecmdline;
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int err = 0;
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if(action != 1)
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{
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driver_wq_state = VMW_DEV_CLOSE;
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return 0;
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};
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if( GetService("DISPLAY") != 0 )
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return 0;
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if( cmdline && *cmdline )
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parse_cmdline(cmdline, log);
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if( *log && !dbg_open(log))
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{
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printf("Can't open %s\nExit\n", log);
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return 0;
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}
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cpu_detect1();
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err = enum_pci_devices();
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if( unlikely(err != 0) )
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{
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dbgprintf("Device enumeration failed\n");
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return 0;
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}
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err = kmap_init();
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if( unlikely(err != 0) )
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{
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dbgprintf("kmap initialization failed\n");
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return 0;
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}
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driver_wq_state = VMW_DEV_INIT;
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CreateKernelThread(vmw_driver_thread);
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err = vmw_init();
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if(unlikely(err!= 0))
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{
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driver_wq_state = VMW_DEV_CLOSE;
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dbgprintf("Epic Fail :(\n");
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delay(100);
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return 0;
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};
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LINE();
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driver_wq_state = VMW_DEV_READY;
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// kms_init(main_device);
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err = RegService("DISPLAY", display_handler);
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if( err != 0)
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dbgprintf("Set DISPLAY handler\n");
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return err;
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};
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#define CURRENT_API 0x0200 /* 2.00 */
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#define COMPATIBLE_API 0x0100 /* 1.00 */
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#define API_VERSION (COMPATIBLE_API << 16) | CURRENT_API
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#define DISPLAY_VERSION API_VERSION
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#define SRV_GETVERSION 0
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#define SRV_ENUM_MODES 1
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#define SRV_SET_MODE 2
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#define SRV_GET_CAPS 3
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#define SRV_CMDLINE 4
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#define SRV_GET_PCI_INFO 20
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#define check_input(size) \
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if( unlikely((inp==NULL)||(io->inp_size != (size))) ) \
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break;
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#define check_output(size) \
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if( unlikely((outp==NULL)||(io->out_size != (size))) ) \
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break;
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int _stdcall display_handler(ioctl_t *io)
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{
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struct drm_file *file;
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int retval = -1;
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u32 *inp;
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u32 *outp;
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inp = io->input;
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outp = io->output;
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file = drm_file_handlers[0];
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switch(io->io_code)
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{
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case SRV_GETVERSION:
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check_output(4);
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*outp = DISPLAY_VERSION;
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retval = 0;
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break;
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case SRV_ENUM_MODES:
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// dbgprintf("SRV_ENUM_MODES inp %x inp_size %x out_size %x\n",
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// inp, io->inp_size, io->out_size );
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// check_output(4);
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// check_input(*outp * sizeof(videomode_t));
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if( kms_modeset)
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retval = get_videomodes((videomode_t*)inp, outp);
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break;
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case SRV_SET_MODE:
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// dbgprintf("SRV_SET_MODE inp %x inp_size %x\n",
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// inp, io->inp_size);
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// check_input(sizeof(videomode_t));
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if( kms_modeset )
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retval = set_user_mode((videomode_t*)inp);
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break;
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#if 0
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case SRV_GET_CAPS:
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retval = get_driver_caps((hwcaps_t*)inp);
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break;
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case SRV_GET_PCI_INFO:
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get_pci_info((struct pci_device *)inp);
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retval = 0;
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break;
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case SRV_GET_PARAM:
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retval = gem_getparam(main_device, inp);
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break;
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case SRV_I915_GEM_CREATE:
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retval = i915_gem_create_ioctl(main_device, inp, file);
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break;
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case SRV_DRM_GEM_CLOSE:
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retval = drm_gem_close_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_PIN:
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retval = i915_gem_pin_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_SET_CACHEING:
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retval = i915_gem_set_caching_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_GET_APERTURE:
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retval = i915_gem_get_aperture_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_PWRITE:
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retval = i915_gem_pwrite_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_BUSY:
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retval = i915_gem_busy_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_SET_DOMAIN:
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retval = i915_gem_set_domain_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_THROTTLE:
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retval = i915_gem_throttle_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_MMAP:
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retval = i915_gem_mmap_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_MMAP_GTT:
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retval = i915_gem_mmap_gtt_ioctl(main_device, inp, file);
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break;
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case SRV_FBINFO:
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retval = i915_fbinfo(inp);
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break;
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case SRV_I915_GEM_EXECBUFFER2:
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retval = i915_gem_execbuffer2(main_device, inp, file);
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break;
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case SRV_MASK_UPDATE:
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retval = i915_mask_update(main_device, inp, file);
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break;
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#endif
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};
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return retval;
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}
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#define PCI_CLASS_REVISION 0x08
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#define PCI_CLASS_DISPLAY_VGA 0x0300
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#define PCI_CLASS_BRIDGE_HOST 0x0600
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#define PCI_CLASS_BRIDGE_ISA 0x0601
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int pci_scan_filter(u32 id, u32 busnr, u32 devfn)
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{
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u16 vendor, device;
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u32 class;
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int ret = 0;
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vendor = id & 0xffff;
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device = (id >> 16) & 0xffff;
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if(vendor == 0x15AD )
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{
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class = PciRead32(busnr, devfn, PCI_CLASS_REVISION);
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class >>= 16;
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if( class == PCI_CLASS_DISPLAY_VGA )
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ret = 1;
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}
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return ret;
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};
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static char* parse_path(char *p, char *log)
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{
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char c;
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while( (c = *p++) == ' ');
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p--;
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while( (c = *log++ = *p++) && (c != ' '));
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*log = 0;
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return p;
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};
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void parse_cmdline(char *cmdline, char *log)
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{
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char *p = cmdline;
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char c = *p++;
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while( c )
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{
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if( c == '-')
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{
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switch(*p++)
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{
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case 'l':
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p = parse_path(p, log);
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break;
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};
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};
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c = *p++;
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};
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};
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struct mtrr
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{
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u64 base;
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u64 mask;
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};
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struct cpuinfo
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{
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u64 caps;
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u64 def_mtrr;
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u64 mtrr_cap;
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int var_mtrr_count;
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int fix_mtrr_count;
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struct mtrr var_mtrr[9];
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char model_name[64];
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};
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static u32 deftype_lo, deftype_hi;
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void cpu_detect1()
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{
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struct cpuinfo cpuinfo;
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u32 junk, tfms, cap0, misc;
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int i;
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cpuid(0x00000001, &tfms, &misc, &junk, &cap0);
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if (cap0 & (1<<19))
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{
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x86_clflush_size = ((misc >> 8) & 0xff) * 8;
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}
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tsc_khz = (unsigned int)(GetCpuFreq()/1000);
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}
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/*
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int get_driver_caps(hwcaps_t *caps)
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{
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int ret = 0;
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switch(caps->idx)
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{
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case 0:
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caps->opt[0] = 0;
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caps->opt[1] = 0;
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break;
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case 1:
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caps->cap1.max_tex_width = 4096;
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caps->cap1.max_tex_height = 4096;
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break;
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default:
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ret = 1;
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};
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caps->idx = 1;
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return ret;
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}
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void get_pci_info(struct pci_device *dev)
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{
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struct pci_dev *pdev = main_device->pdev;
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memset(dev, sizeof(*dev), 0);
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dev->domain = 0;
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dev->bus = pdev->busnr;
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dev->dev = pdev->devfn >> 3;
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dev->func = pdev->devfn & 7;
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dev->vendor_id = pdev->vendor;
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dev->device_id = pdev->device;
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dev->revision = pdev->revision;
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};
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*/
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#include <ddk.h>
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#include <linux/mm.h>
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#include <drm/drmP.h>
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#include <linux/ctype.h>
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#include "vmwgfx_kms.h"
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void kms_update();
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extern struct drm_device *main_device;
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#define CURSOR_WIDTH 64
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#define CURSOR_HEIGHT 64
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display_t *os_display;
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static int count_connector_modes(struct drm_connector* connector)
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{
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struct drm_display_mode *mode;
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int count = 0;
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list_for_each_entry(mode, &connector->modes, head)
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{
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count++;
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};
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return count;
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};
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static void __stdcall restore_cursor(int x, int y){};
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static void disable_mouse(void) {};
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static void __stdcall move_cursor_kms(cursor_t *cursor, int x, int y)
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{
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struct drm_crtc *crtc = os_display->crtc;
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struct vmw_private *dev_priv = vmw_priv(crtc->dev);
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struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
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du->cursor_x = x;
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du->cursor_y = y;
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vmw_cursor_update_position(dev_priv, true, x,y);
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};
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static cursor_t* __stdcall select_cursor_kms(cursor_t *cursor)
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{
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struct vmw_private *dev_priv = vmw_priv(os_display->ddev);
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struct vmw_display_unit *du = vmw_crtc_to_du(os_display->crtc);
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cursor_t *old;
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old = os_display->cursor;
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os_display->cursor = cursor;
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vmw_cursor_update_image(dev_priv, cursor->data,
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64, 64, cursor->hot_x, cursor->hot_y);
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vmw_cursor_update_position(dev_priv, true,
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du->cursor_x, du->cursor_y);
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return old;
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};
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int kms_init(struct drm_device *dev)
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{
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struct drm_connector *connector;
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struct drm_encoder *encoder;
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struct drm_crtc *crtc = NULL;
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struct vmw_display_unit *du;
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cursor_t *cursor;
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int mode_count;
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u32 ifl;
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int err;
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crtc = list_entry(dev->mode_config.crtc_list.next, typeof(*crtc), head);
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encoder = list_entry(dev->mode_config.encoder_list.next, typeof(*encoder), head);
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connector = list_entry(dev->mode_config.connector_list.next, typeof(*connector), head);
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connector->encoder = encoder;
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mode_count = count_connector_modes(connector);
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if(mode_count == 0)
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{
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struct drm_display_mode *mode;
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connector->funcs->fill_modes(connector,
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dev->mode_config.max_width,
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dev->mode_config.max_height);
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list_for_each_entry(mode, &connector->modes, head)
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mode_count++;
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};
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DRM_DEBUG_KMS("CONNECTOR %x ID:%d status:%d ENCODER %x CRTC %x ID:%d\n",
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connector, connector->base.id,
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connector->status, connector->encoder,
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crtc, crtc->base.id );
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os_display = GetDisplay();
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os_display->ddev = dev;
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os_display->connector = connector;
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os_display->crtc = crtc;
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os_display->supported_modes = mode_count;
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ifl = safe_cli();
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{
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os_display->restore_cursor(0,0);
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os_display->select_cursor = select_cursor_kms;
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os_display->show_cursor = NULL;
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os_display->move_cursor = move_cursor_kms;
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os_display->restore_cursor = restore_cursor;
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os_display->disable_mouse = disable_mouse;
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};
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safe_sti(ifl);
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du = vmw_crtc_to_du(os_display->crtc);
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du->cursor_x = os_display->width/2;
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du->cursor_y = os_display->height/2;
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select_cursor_kms(os_display->cursor);
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return 0;
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};
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void kms_update()
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{
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struct vmw_private *dev_priv = vmw_priv(main_device);
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size_t fifo_size;
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u32 ifl;
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int i;
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struct {
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uint32_t header;
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SVGAFifoCmdUpdate body;
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} *cmd;
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fifo_size = sizeof(*cmd);
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cmd = vmw_fifo_reserve(dev_priv, fifo_size);
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if (unlikely(cmd == NULL)) {
|
|
DRM_ERROR("Fifo reserve failed.\n");
|
|
return;
|
|
}
|
|
os_display = GetDisplay();
|
|
cmd->header = cpu_to_le32(SVGA_CMD_UPDATE);
|
|
cmd->body.x = 0;
|
|
cmd->body.y = 0;
|
|
cmd->body.width = os_display->width;
|
|
cmd->body.height = os_display->height;
|
|
|
|
vmw_fifo_commit(dev_priv, fifo_size);
|
|
}
|
|
|
|
int get_videomodes(videomode_t *mode, int *count)
|
|
{
|
|
struct drm_display_mode *drmmode;
|
|
int err = -1;
|
|
|
|
if( *count == 0 )
|
|
{
|
|
*count = os_display->supported_modes;
|
|
err = 0;
|
|
}
|
|
else if( mode != NULL )
|
|
{
|
|
int i = 0;
|
|
|
|
if( *count > os_display->supported_modes)
|
|
*count = os_display->supported_modes;
|
|
|
|
list_for_each_entry(drmmode, &os_display->connector->modes, head)
|
|
{
|
|
if( i < *count)
|
|
{
|
|
// mode->width = drm_mode_width(drmmode);
|
|
// mode->height = drm_mode_height(drmmode);
|
|
mode->bpp = 32;
|
|
mode->freq = drmmode->vrefresh;
|
|
i++;
|
|
mode++;
|
|
}
|
|
else break;
|
|
};
|
|
|
|
*count = i;
|
|
err = 0;
|
|
};
|
|
|
|
return err;
|
|
};
|
|
|
|
|
|
bool set_mode(struct drm_device *dev, struct drm_connector *connector,
|
|
videomode_t *reqmode, bool strict);
|
|
|
|
|
|
int set_user_mode(videomode_t *mode)
|
|
{
|
|
int err = -1;
|
|
|
|
dbgprintf("width %d height %d vrefresh %d\n",
|
|
mode->width, mode->height, mode->freq);
|
|
|
|
if( (mode->width != 0) &&
|
|
(mode->height != 0) &&
|
|
(mode->freq != 0 ) &&
|
|
( (mode->width != os_display->width) ||
|
|
(mode->height != os_display->height) ||
|
|
(mode->freq != os_display->vrefresh) ) )
|
|
{
|
|
// if( set_mode(os_display->ddev, os_display->connector, mode, true) )
|
|
// err = 0;
|
|
};
|
|
|
|
return err;
|
|
};
|
|
|
|
struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags)
|
|
{
|
|
struct file *filep;
|
|
int count;
|
|
|
|
filep = __builtin_malloc(sizeof(*filep));
|
|
|
|
if(unlikely(filep == NULL))
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
count = size / PAGE_SIZE;
|
|
|
|
filep->pages = kzalloc(sizeof(struct page *) * count, 0);
|
|
if(unlikely(filep->pages == NULL))
|
|
{
|
|
kfree(filep);
|
|
return ERR_PTR(-ENOMEM);
|
|
};
|
|
|
|
filep->count = count;
|
|
filep->allocated = 0;
|
|
filep->vma = NULL;
|
|
|
|
// printf("%s file %p pages %p count %d\n",
|
|
// __FUNCTION__,filep, filep->pages, count);
|
|
|
|
return filep;
|
|
}
|
|
|
|
struct page *shmem_read_mapping_page_gfp(struct file *filep,
|
|
pgoff_t index, gfp_t gfp)
|
|
{
|
|
struct page *page;
|
|
|
|
// dbgprintf("%s, file %p index %d\n", __FUNCTION__, filep, index);
|
|
|
|
if(unlikely(index >= filep->count))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
page = filep->pages[index];
|
|
|
|
if(unlikely(page == NULL))
|
|
{
|
|
page = (struct page *)AllocPage();
|
|
|
|
if(unlikely(page == NULL))
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
filep->pages[index] = page;
|
|
};
|
|
|
|
return page;
|
|
};
|
|
|
|
ktime_t ktime_get(void)
|
|
{
|
|
ktime_t t;
|
|
|
|
t.tv64 = GetClockNs();
|
|
|
|
return t;
|
|
}
|
|
|
|
bool reservation_object_test_signaled_rcu(struct reservation_object *obj,
|
|
bool test_all)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
int reservation_object_reserve_shared(struct reservation_object *obj)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void reservation_object_add_shared_fence(struct reservation_object *obj,
|
|
struct fence *fence)
|
|
{};
|
|
|
|
void reservation_object_add_excl_fence(struct reservation_object *obj,
|
|
struct fence *fence)
|
|
{};
|
|
|
|
#define KMAP_MAX 256
|
|
|
|
static struct mutex kmap_mutex;
|
|
static struct page* kmap_table[KMAP_MAX];
|
|
static int kmap_av;
|
|
static int kmap_first;
|
|
static void* kmap_base;
|
|
|
|
|
|
int kmap_init()
|
|
{
|
|
kmap_base = AllocKernelSpace(KMAP_MAX*4096);
|
|
if(kmap_base == NULL)
|
|
return -1;
|
|
|
|
kmap_av = KMAP_MAX;
|
|
MutexInit(&kmap_mutex);
|
|
return 0;
|
|
};
|
|
|
|
void *kmap(struct page *page)
|
|
{
|
|
void *vaddr = NULL;
|
|
int i;
|
|
|
|
do
|
|
{
|
|
MutexLock(&kmap_mutex);
|
|
if(kmap_av != 0)
|
|
{
|
|
for(i = kmap_first; i < KMAP_MAX; i++)
|
|
{
|
|
if(kmap_table[i] == NULL)
|
|
{
|
|
kmap_av--;
|
|
kmap_first = i;
|
|
kmap_table[i] = page;
|
|
vaddr = kmap_base + (i<<12);
|
|
MapPage(vaddr,(addr_t)page,3);
|
|
break;
|
|
};
|
|
};
|
|
};
|
|
MutexUnlock(&kmap_mutex);
|
|
}while(vaddr == NULL);
|
|
|
|
return vaddr;
|
|
};
|
|
|
|
void *kmap_atomic(struct page *page) __attribute__ ((alias ("kmap")));
|
|
|
|
void kunmap(struct page *page)
|
|
{
|
|
void *vaddr;
|
|
int i;
|
|
|
|
MutexLock(&kmap_mutex);
|
|
|
|
for(i = 0; i < KMAP_MAX; i++)
|
|
{
|
|
if(kmap_table[i] == page)
|
|
{
|
|
kmap_av++;
|
|
if(i < kmap_first)
|
|
kmap_first = i;
|
|
kmap_table[i] = NULL;
|
|
vaddr = kmap_base + (i<<12);
|
|
MapPage(vaddr,0,0);
|
|
break;
|
|
};
|
|
};
|
|
|
|
MutexUnlock(&kmap_mutex);
|
|
};
|
|
|
|
void kunmap_atomic(void *vaddr)
|
|
{
|
|
int i;
|
|
|
|
MapPage(vaddr,0,0);
|
|
|
|
i = (vaddr - kmap_base) >> 12;
|
|
|
|
MutexLock(&kmap_mutex);
|
|
|
|
kmap_av++;
|
|
if(i < kmap_first)
|
|
kmap_first = i;
|
|
kmap_table[i] = NULL;
|
|
|
|
MutexUnlock(&kmap_mutex);
|
|
}
|
|
|
|
|
|
#include <linux/rcupdate.h>
|
|
|
|
struct rcu_ctrlblk {
|
|
struct rcu_head *rcucblist; /* List of pending callbacks (CBs). */
|
|
struct rcu_head **donetail; /* ->next pointer of last "done" CB. */
|
|
struct rcu_head **curtail; /* ->next pointer of last CB. */
|
|
// RCU_TRACE(long qlen); /* Number of pending CBs. */
|
|
// RCU_TRACE(unsigned long gp_start); /* Start time for stalls. */
|
|
// RCU_TRACE(unsigned long ticks_this_gp); /* Statistic for stalls. */
|
|
// RCU_TRACE(unsigned long jiffies_stall); /* Jiffies at next stall. */
|
|
// RCU_TRACE(const char *name); /* Name of RCU type. */
|
|
};
|
|
|
|
/* Definition for rcupdate control block. */
|
|
static struct rcu_ctrlblk rcu_sched_ctrlblk = {
|
|
.donetail = &rcu_sched_ctrlblk.rcucblist,
|
|
.curtail = &rcu_sched_ctrlblk.rcucblist,
|
|
// RCU_TRACE(.name = "rcu_sched")
|
|
};
|
|
|
|
static void __call_rcu(struct rcu_head *head,
|
|
void (*func)(struct rcu_head *rcu),
|
|
struct rcu_ctrlblk *rcp)
|
|
{
|
|
unsigned long flags;
|
|
|
|
// debug_rcu_head_queue(head);
|
|
head->func = func;
|
|
head->next = NULL;
|
|
|
|
local_irq_save(flags);
|
|
*rcp->curtail = head;
|
|
rcp->curtail = &head->next;
|
|
// RCU_TRACE(rcp->qlen++);
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
/*
|
|
* Post an RCU callback to be invoked after the end of an RCU-sched grace
|
|
* period. But since we have but one CPU, that would be after any
|
|
* quiescent state.
|
|
*/
|
|
void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
|
|
{
|
|
__call_rcu(head, func, &rcu_sched_ctrlblk);
|
|
}
|
|
|
|
|
|
fb_get_options(const char *name, char **option)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes)
|
|
{
|
|
while (bytes) {
|
|
if (*start != value)
|
|
return (void *)start;
|
|
start++;
|
|
bytes--;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* memchr_inv - Find an unmatching character in an area of memory.
|
|
* @start: The memory area
|
|
* @c: Find a character other than c
|
|
* @bytes: The size of the area.
|
|
*
|
|
* returns the address of the first character other than @c, or %NULL
|
|
* if the whole buffer contains just @c.
|
|
*/
|
|
void *memchr_inv(const void *start, int c, size_t bytes)
|
|
{
|
|
u8 value = c;
|
|
u64 value64;
|
|
unsigned int words, prefix;
|
|
|
|
if (bytes <= 16)
|
|
return check_bytes8(start, value, bytes);
|
|
|
|
value64 = value;
|
|
#if defined(ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
|
|
value64 *= 0x0101010101010101;
|
|
#elif defined(ARCH_HAS_FAST_MULTIPLIER)
|
|
value64 *= 0x01010101;
|
|
value64 |= value64 << 32;
|
|
#else
|
|
value64 |= value64 << 8;
|
|
value64 |= value64 << 16;
|
|
value64 |= value64 << 32;
|
|
#endif
|
|
|
|
prefix = (unsigned long)start % 8;
|
|
if (prefix) {
|
|
u8 *r;
|
|
|
|
prefix = 8 - prefix;
|
|
r = check_bytes8(start, value, prefix);
|
|
if (r)
|
|
return r;
|
|
start += prefix;
|
|
bytes -= prefix;
|
|
}
|
|
|
|
words = bytes / 8;
|
|
|
|
while (words) {
|
|
if (*(u64 *)start != value64)
|
|
return check_bytes8(start, value, 8);
|
|
start += 8;
|
|
words--;
|
|
}
|
|
|
|
return check_bytes8(start, value, bytes % 8);
|
|
}
|
|
|
|
|
|
void drm_master_put(struct drm_master **master)
|
|
{};
|
|
|
|
|
|
bool ttm_ref_object_exists(struct ttm_object_file *tfile,
|
|
struct ttm_base_object *base)
|
|
{
|
|
return true;
|
|
};
|
|
|
|
int autoremove_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *key)
|
|
{
|
|
list_del_init(&wait->task_list);
|
|
return 1;
|
|
}
|
|
|
|
|
|
struct file *fd_array[32];
|
|
|
|
struct file *fget(unsigned int fd)
|
|
{
|
|
struct file *file;
|
|
|
|
file = fd_array[fd];
|
|
get_file_rcu(file);
|
|
return file;
|
|
}
|
|
|
|
void fput(struct file *file)
|
|
{
|
|
if (atomic_long_dec_and_test(&file->f_count))
|
|
{
|
|
|
|
}
|
|
}
|
|
|
|
struct dma_buf *dma_buf_get(int fd)
|
|
{
|
|
struct file *file;
|
|
|
|
file = fget(fd);
|
|
|
|
if (!file)
|
|
return ERR_PTR(-EBADF);
|
|
|
|
// if (!is_dma_buf_file(file)) {
|
|
// fput(file);
|
|
// return ERR_PTR(-EINVAL);
|
|
// }
|
|
|
|
return file->private_data;
|
|
}
|
|
|
|
int get_unused_fd_flags(unsigned flags)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
void fd_install(unsigned int fd, struct file *file)
|
|
{
|
|
fd_array[fd] = file;
|
|
}
|
|
|
|
int dma_buf_fd(struct dma_buf *dmabuf, int flags)
|
|
{
|
|
int fd;
|
|
|
|
if (!dmabuf || !dmabuf->file)
|
|
return -EINVAL;
|
|
|
|
fd = get_unused_fd_flags(flags);
|
|
if (fd < 0)
|
|
return fd;
|
|
|
|
fd_install(fd, dmabuf->file);
|
|
|
|
return fd;
|
|
}
|
|
|
|
void dma_buf_put(struct dma_buf *dmabuf)
|
|
{
|
|
if (WARN_ON(!dmabuf || !dmabuf->file))
|
|
return;
|
|
|
|
fput(dmabuf->file);
|
|
}
|
|
|
|
|
|
struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
|
|
{
|
|
struct dma_buf *dmabuf;
|
|
struct reservation_object *resv = exp_info->resv;
|
|
struct file *file;
|
|
size_t alloc_size = sizeof(struct dma_buf);
|
|
|
|
if (!exp_info->resv)
|
|
alloc_size += sizeof(struct reservation_object);
|
|
else
|
|
/* prevent &dma_buf[1] == dma_buf->resv */
|
|
alloc_size += 1;
|
|
|
|
if (WARN_ON(!exp_info->priv
|
|
|| !exp_info->ops
|
|
|| !exp_info->ops->map_dma_buf
|
|
|| !exp_info->ops->unmap_dma_buf
|
|
|| !exp_info->ops->release
|
|
|| !exp_info->ops->kmap_atomic
|
|
|| !exp_info->ops->kmap
|
|
|| !exp_info->ops->mmap)) {
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
dmabuf = kzalloc(alloc_size, GFP_KERNEL);
|
|
if (!dmabuf) {
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
dmabuf->priv = exp_info->priv;
|
|
dmabuf->ops = exp_info->ops;
|
|
dmabuf->size = exp_info->size;
|
|
dmabuf->exp_name = exp_info->exp_name;
|
|
|
|
if (!resv) {
|
|
resv = (struct reservation_object *)&dmabuf[1];
|
|
reservation_object_init(resv);
|
|
}
|
|
// dmabuf->resv = resv;
|
|
|
|
// file = anon_inode_getfile("dmabuf", &dma_buf_fops, dmabuf,
|
|
// exp_info->flags);
|
|
// if (IS_ERR(file)) {
|
|
// kfree(dmabuf);
|
|
// return ERR_CAST(file);
|
|
// }
|
|
|
|
// file->f_mode |= FMODE_LSEEK;
|
|
// dmabuf->file = file;
|
|
|
|
mutex_init(&dmabuf->lock);
|
|
INIT_LIST_HEAD(&dmabuf->attachments);
|
|
|
|
// mutex_lock(&db_list.lock);
|
|
// list_add(&dmabuf->list_node, &db_list.head);
|
|
// mutex_unlock(&db_list.lock);
|
|
|
|
return dmabuf;
|
|
}
|
|
|
|
int dma_map_sg(struct device *dev, struct scatterlist *sglist,
|
|
int nelems, int dir)
|
|
{
|
|
struct scatterlist *s;
|
|
int i;
|
|
|
|
for_each_sg(sglist, s, nelems, i) {
|
|
s->dma_address = (dma_addr_t)sg_phys(s);
|
|
#ifdef CONFIG_NEED_SG_DMA_LENGTH
|
|
s->dma_length = s->length;
|
|
#endif
|
|
}
|
|
|
|
return nelems;
|
|
}
|
|
|
|
void *vmalloc(unsigned long size)
|
|
{
|
|
return KernelAlloc(size);
|
|
}
|
|
|
|
void vfree(const void *addr)
|
|
{
|
|
KernelFree(addr);
|
|
}
|