forked from KolibriOS/kolibrios
920 lines
23 KiB
C
920 lines
23 KiB
C
#include <syscall.h>
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#include <drm/drmP.h>
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#include <drm/i915_drm.h>
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#include "i915_drv.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 "bitmap.h"
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#define DRV_NAME "i915 v4.4"
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#define I915_DEV_CLOSE 0
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#define I915_DEV_INIT 1
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#define I915_DEV_READY 2
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struct pci_device {
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uint16_t domain;
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uint8_t bus;
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uint8_t dev;
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uint8_t func;
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uint16_t vendor_id;
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uint16_t device_id;
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uint16_t subvendor_id;
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uint16_t subdevice_id;
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uint32_t device_class;
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uint8_t revision;
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};
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struct cmdtable
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{
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char *key;
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int size;
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int *val;
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};
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#define CMDENTRY(key, val) {(key), (sizeof(key)-1), &val}
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void parse_cmdline(char *cmdline, struct cmdtable *table, char *log, videomode_t *mode);
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int oops_in_progress;
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int i915_fbsize = 16;
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struct drm_device *main_device;
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struct drm_file *drm_file_handlers[256];
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videomode_t usermode;
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void cpu_detect1();
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int kmap_init();
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int _stdcall display_handler(ioctl_t *io);
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int init_agp(void);
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void get_pci_info(struct pci_device *dev);
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int i915_getparam(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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int i915_mask_update(struct drm_device *dev, void *data,
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struct drm_file *file);
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struct cmdtable cmdtable[]= {
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CMDENTRY("-FB=", i915_fbsize),
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/* CMDENTRY("-pm=", i915.powersave), */
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CMDENTRY("-rc6=", i915.enable_rc6),
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CMDENTRY("-fbc=", i915.enable_fbc),
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CMDENTRY("-ppgt=", i915.enable_ppgtt),
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{NULL, 0}
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};
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static char log[256];
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unsigned long volatile jiffies;
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struct workqueue_struct *system_wq;
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int driver_wq_state;
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int x86_clflush_size;
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unsigned int tsc_khz;
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int i915_modeset = 1;
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typedef union __attribute__((packed))
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{
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uint32_t val;
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struct
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{
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uint8_t state;
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uint8_t code;
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uint16_t ctrl_key;
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};
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}oskey_t;
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static inline oskey_t get_key(void)
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{
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oskey_t val;
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asm volatile("int $0x40":"=a"(val):"a"(2));
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return val;
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};
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void i915_dpms(struct drm_device *dev, int mode);
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void i915_driver_thread()
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{
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struct drm_i915_private *dev_priv = NULL;
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struct workqueue_struct *cwq = NULL;
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static int dpms = 1;
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static int dpms_lock = 0;
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oskey_t key;
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unsigned long irqflags;
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int tmp;
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printf("%s\n",__FUNCTION__);
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while(driver_wq_state == I915_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 == I915_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 = dev_priv->wq;
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asm volatile("int $0x40":"=a"(tmp):"a"(66),"b"(1),"c"(1));
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asm volatile("int $0x40":"=a"(tmp):"a"(66),"b"(4),"c"(0x46),"d"(0x330));
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asm volatile("int $0x40":"=a"(tmp):"a"(66),"b"(4),"c"(0xC6),"d"(0x330));
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while(driver_wq_state != I915_DEV_CLOSE)
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{
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jiffies = GetClockNs() / 10000000;
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key = get_key();
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if( (key.val != 1) && (key.state == 0x02))
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{
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if(key.code == 0x46 && dpms_lock == 0)
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{
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dpms_lock = 1;
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if(dpms == 1)
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{
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i915_dpms(main_device, DRM_MODE_DPMS_OFF);
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printf("dpms off\n");
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}
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else
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{
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i915_dpms(main_device, DRM_MODE_DPMS_ON);
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printf("dpms on\n");
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};
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dpms ^= 1;
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}
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else if(key.code == 0xC6)
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dpms_lock = 0;
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};
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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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delay(1);
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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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int err = 0;
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if(action != 1)
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{
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driver_wq_state = I915_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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printf("\n%s build %s %s\nusage: i915 [options]\n"
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"-FB=<0-9> Set framebuffer size in megabytes (default: 16)\n",
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"-pm=<0,1> Enable powersavings, fbc, downclocking, etc. (default: 1 - true)\n",
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DRV_NAME, __DATE__, __TIME__);
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printf("-rc6=<-1,0-7> Enable power-saving render C-state 6.\n"
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" Different stages can be selected via bitmask values\n"
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" (0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6).\n"
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" For example, 3 would enable rc6 and deep rc6, and 7 would enable everything.\n"
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" default: -1 (use per-chip default)\n");
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printf("-fbc=<-1,0,1> Enable frame buffer compression for power savings\n"
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" (default: -1 (use per-chip default))\n");
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printf("-ppgt=<0,1> Enable PPGTT (default: true)\n");
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printf("-l<path> path to log file\n");
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printf("-m<WxHxHz> set videomode\n");
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printf("cmdline %s\n", cmdline);
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if( cmdline && *cmdline )
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parse_cmdline(cmdline, cmdtable, log, &usermode);
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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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else
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{
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dbgprintf("\nLOG: %s build %s %s\n",DRV_NAME,__DATE__, __TIME__);
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}
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cpu_detect1();
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// dbgprintf("\ncache line size %d\n", x86_clflush_size);
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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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dmi_scan_machine();
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driver_wq_state = I915_DEV_INIT;
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CreateKernelThread(i915_driver_thread);
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err = i915_init();
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if(unlikely(err!= 0))
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{
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driver_wq_state = I915_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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driver_wq_state = I915_DEV_READY;
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init_display_kms(main_device, &usermode);
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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_GET_PCI_INFO 20
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#define SRV_I915_GET_PARAM 21
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#define SRV_I915_GEM_CREATE 22
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#define SRV_DRM_GEM_CLOSE 23
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#define SRV_DRM_GEM_FLINK 24
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#define SRV_DRM_GEM_OPEN 25
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#define SRV_I915_GEM_PIN 26
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#define SRV_I915_GEM_UNPIN 27
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#define SRV_I915_GEM_GET_CACHING 28
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#define SRV_I915_GEM_SET_CACHING 29
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#define SRV_I915_GEM_PWRITE 30
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#define SRV_I915_GEM_BUSY 31
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#define SRV_I915_GEM_SET_DOMAIN 32
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#define SRV_I915_GEM_MMAP 33
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#define SRV_I915_GEM_SET_TILING 34
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#define SRV_I915_GEM_GET_TILING 35
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#define SRV_I915_GEM_GET_APERTURE 36
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#define SRV_I915_GEM_MMAP_GTT 37
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#define SRV_I915_GEM_THROTTLE 38
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#define SRV_I915_GEM_EXECBUFFER2 39
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#define SRV_I915_GEM_WAIT 40
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#define SRV_I915_GEM_CONTEXT_CREATE 41
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#define SRV_I915_GEM_CONTEXT_DESTROY 42
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#define SRV_I915_REG_READ 43
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#define SRV_FBINFO 44
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#define SRV_MASK_UPDATE 45
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#define SRV_MASK_UPDATE_EX 46
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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( i915_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( i915_modeset )
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retval = set_user_mode((videomode_t*)inp);
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break;
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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_I915_GET_PARAM:
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retval = i915_getparam(main_device, inp, file);
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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_DRM_GEM_FLINK:
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retval = drm_gem_flink_ioctl(main_device, inp, file);
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break;
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case SRV_DRM_GEM_OPEN:
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retval = drm_gem_open_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_GET_CACHING:
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retval = i915_gem_get_caching_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_SET_CACHING:
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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_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_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_SET_TILING:
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retval = i915_gem_set_tiling(main_device, inp, file);
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break;
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case SRV_I915_GEM_GET_TILING:
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retval = i915_gem_get_tiling(main_device, inp, file);
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break;
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case SRV_I915_GEM_GET_APERTURE:
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// printf("SRV_I915_GEM_GET_APERTURE ");
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retval = i915_gem_get_aperture_ioctl(main_device, inp, file);
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// printf(" retval=%d\n", retval);
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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_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_EXECBUFFER2:
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// printf("SRV_I915_GEM_EXECBUFFER2\n");
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retval = i915_gem_execbuffer2(main_device, inp, file);
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break;
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case SRV_I915_GEM_WAIT:
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retval = i915_gem_wait_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_CONTEXT_CREATE:
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retval = i915_gem_context_create_ioctl(main_device, inp, file);
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break;
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case SRV_I915_GEM_CONTEXT_DESTROY:
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retval = i915_gem_context_destroy_ioctl(main_device, inp, file);
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break;
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case SRV_I915_REG_READ:
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retval = i915_reg_read_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_MASK_UPDATE:
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retval = i915_mask_update(main_device, inp, file);
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break;
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case SRV_MASK_UPDATE_EX:
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retval = i915_mask_update_ex(main_device, inp, file);
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break;
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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 == 0x8086)
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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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(class == PCI_CLASS_BRIDGE_HOST) ||
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(class == PCI_CLASS_BRIDGE_ISA))
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ret = 1;
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}
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return ret;
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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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#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
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#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
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#define MSR_MTRRdefType 0x000002ff
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#define IA32_MTRRCAP 0xFE
|
|
#define IA32_CR_PAT_MSR 0x277
|
|
|
|
#define PAT_TYPE_UC 0
|
|
#define PAT_TYPE_WC 1
|
|
#define PAT_TYPE_WB 6
|
|
#define PAT_TYPE_UCM 7
|
|
|
|
|
|
#define MTRR_UC 0
|
|
#define MTRR_WC 1
|
|
#define MTRR_WB 6
|
|
|
|
static inline u64 read_msr(u32 msr)
|
|
{
|
|
union {
|
|
u64 val;
|
|
struct {
|
|
u32 low;
|
|
u32 high;
|
|
};
|
|
}tmp;
|
|
|
|
asm volatile (
|
|
"rdmsr"
|
|
: "=a" (tmp.low), "=d" (tmp.high)
|
|
: "c" (msr));
|
|
return tmp.val;
|
|
}
|
|
|
|
static inline void write_msr(u32 msr, u64 val)
|
|
{
|
|
union {
|
|
u64 val;
|
|
struct {
|
|
u32 low;
|
|
u32 high;
|
|
};
|
|
}tmp;
|
|
|
|
tmp.val = val;
|
|
|
|
asm volatile (
|
|
"wrmsr"
|
|
:: "a" (tmp.low), "d" (tmp.high), "c" (msr));
|
|
}
|
|
|
|
#define SIZE_OR_MASK_BITS(n) (~((1ULL << ((n) - PAGE_SHIFT)) - 1))
|
|
|
|
static void set_mtrr(unsigned int reg, unsigned long base,
|
|
unsigned long size, int type)
|
|
{
|
|
unsigned int base_lo, base_hi, mask_lo, mask_hi;
|
|
u64 size_or_mask, size_and_mask;
|
|
|
|
size_or_mask = SIZE_OR_MASK_BITS(36);
|
|
size_and_mask = 0x00f00000;
|
|
|
|
if (size == 0) {
|
|
/*
|
|
* The invalid bit is kept in the mask, so we simply
|
|
* clear the relevant mask register to disable a range.
|
|
*/
|
|
native_write_msr(MTRRphysMask_MSR(reg), 0, 0);
|
|
}
|
|
else {
|
|
base_lo = base << PAGE_SHIFT | type;
|
|
base_hi = (base & size_and_mask) >> (32 - PAGE_SHIFT);
|
|
mask_lo = -size << PAGE_SHIFT | 0x800;
|
|
mask_hi = (-size & size_and_mask) >> (32 - PAGE_SHIFT);
|
|
|
|
native_write_msr(MTRRphysBase_MSR(reg), base_lo, base_hi);
|
|
native_write_msr(MTRRphysMask_MSR(reg), mask_lo, mask_hi);
|
|
};
|
|
}
|
|
|
|
|
|
static u32 deftype_lo, deftype_hi;
|
|
|
|
void cpu_detect1()
|
|
{
|
|
struct cpuinfo cpuinfo;
|
|
|
|
u32 junk, tfms, cap0, misc;
|
|
int i;
|
|
|
|
cpuid(0x00000001, &tfms, &misc, &junk, &cap0);
|
|
|
|
if (cap0 & (1<<19))
|
|
{
|
|
x86_clflush_size = ((misc >> 8) & 0xff) * 8;
|
|
}
|
|
|
|
#if 0
|
|
cpuid(0x80000002, (unsigned int*)&cpuinfo.model_name[0], (unsigned int*)&cpuinfo.model_name[4],
|
|
(unsigned int*)&cpuinfo.model_name[8], (unsigned int*)&cpuinfo.model_name[12]);
|
|
cpuid(0x80000003, (unsigned int*)&cpuinfo.model_name[16], (unsigned int*)&cpuinfo.model_name[20],
|
|
(unsigned int*)&cpuinfo.model_name[24], (unsigned int*)&cpuinfo.model_name[28]);
|
|
cpuid(0x80000004, (unsigned int*)&cpuinfo.model_name[32], (unsigned int*)&cpuinfo.model_name[36],
|
|
(unsigned int*)&cpuinfo.model_name[40], (unsigned int*)&cpuinfo.model_name[44]);
|
|
|
|
printf("\n%s\n\n",cpuinfo.model_name);
|
|
|
|
cpuinfo.def_mtrr = read_msr(MSR_MTRRdefType);
|
|
cpuinfo.mtrr_cap = read_msr(IA32_MTRRCAP);
|
|
|
|
printf("MSR_MTRRdefType %016llx\n\n", cpuinfo.def_mtrr);
|
|
|
|
cpuinfo.var_mtrr_count = (u8_t)cpuinfo.mtrr_cap;
|
|
|
|
for(i = 0; i < cpuinfo.var_mtrr_count; i++)
|
|
{
|
|
u64_t mtrr_base;
|
|
u64_t mtrr_mask;
|
|
|
|
cpuinfo.var_mtrr[i].base = read_msr(MTRRphysBase_MSR(i));
|
|
cpuinfo.var_mtrr[i].mask = read_msr(MTRRphysMask_MSR(i));
|
|
|
|
printf("MTRR_%d base: %016llx mask: %016llx\n", i,
|
|
cpuinfo.var_mtrr[i].base,
|
|
cpuinfo.var_mtrr[i].mask);
|
|
};
|
|
|
|
unsigned int cr0, cr3, cr4, eflags;
|
|
|
|
eflags = safe_cli();
|
|
|
|
/* Enter the no-fill (CD=1, NW=0) cache mode and flush caches. */
|
|
cr0 = read_cr0() | (1<<30);
|
|
write_cr0(cr0);
|
|
wbinvd();
|
|
|
|
cr4 = read_cr4();
|
|
write_cr4(cr4 & ~(1<<7));
|
|
|
|
cr3 = read_cr3();
|
|
write_cr3(cr3);
|
|
|
|
/* Save MTRR state */
|
|
rdmsr(MSR_MTRRdefType, deftype_lo, deftype_hi);
|
|
|
|
/* Disable MTRRs, and set the default type to uncached */
|
|
native_write_msr(MSR_MTRRdefType, deftype_lo & ~0xcff, deftype_hi);
|
|
wbinvd();
|
|
|
|
i = 0;
|
|
set_mtrr(i++,0,0x80000000>>12,MTRR_WB);
|
|
set_mtrr(i++,0x80000000>>12,0x40000000>>12,MTRR_WB);
|
|
set_mtrr(i++,0xC0000000>>12,0x20000000>>12,MTRR_WB);
|
|
set_mtrr(i++,0xdb800000>>12,0x00800000>>12,MTRR_UC);
|
|
set_mtrr(i++,0xdc000000>>12,0x04000000>>12,MTRR_UC);
|
|
set_mtrr(i++,0xE0000000>>12,0x10000000>>12,MTRR_WC);
|
|
|
|
for(; i < cpuinfo.var_mtrr_count; i++)
|
|
set_mtrr(i,0,0,0);
|
|
|
|
write_cr3(cr3);
|
|
|
|
/* Intel (P6) standard MTRRs */
|
|
native_write_msr(MSR_MTRRdefType, deftype_lo, deftype_hi);
|
|
|
|
/* Enable caches */
|
|
write_cr0(read_cr0() & ~(1<<30));
|
|
|
|
/* Restore value of CR4 */
|
|
write_cr4(cr4);
|
|
|
|
safe_sti(eflags);
|
|
|
|
printf("\nnew MTRR map\n\n");
|
|
|
|
for(i = 0; i < cpuinfo.var_mtrr_count; i++)
|
|
{
|
|
u64_t mtrr_base;
|
|
u64_t mtrr_mask;
|
|
|
|
cpuinfo.var_mtrr[i].base = read_msr(MTRRphysBase_MSR(i));
|
|
cpuinfo.var_mtrr[i].mask = read_msr(MTRRphysMask_MSR(i));
|
|
|
|
printf("MTRR_%d base: %016llx mask: %016llx\n", i,
|
|
cpuinfo.var_mtrr[i].base,
|
|
cpuinfo.var_mtrr[i].mask);
|
|
};
|
|
#endif
|
|
|
|
tsc_khz = (unsigned int)(GetCpuFreq()/1000);
|
|
}
|
|
|
|
|
|
int get_driver_caps(hwcaps_t *caps)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch(caps->idx)
|
|
{
|
|
case 0:
|
|
caps->opt[0] = 0;
|
|
caps->opt[1] = 0;
|
|
break;
|
|
|
|
case 1:
|
|
caps->cap1.max_tex_width = 4096;
|
|
caps->cap1.max_tex_height = 4096;
|
|
break;
|
|
default:
|
|
ret = 1;
|
|
};
|
|
caps->idx = 1;
|
|
return ret;
|
|
}
|
|
|
|
|
|
void get_pci_info(struct pci_device *dev)
|
|
{
|
|
struct pci_dev *pdev = main_device->pdev;
|
|
|
|
memset(dev, sizeof(*dev), 0);
|
|
|
|
dev->domain = 0;
|
|
dev->bus = pdev->busnr;
|
|
dev->dev = pdev->devfn >> 3;
|
|
dev->func = pdev->devfn & 7;
|
|
dev->vendor_id = pdev->vendor;
|
|
dev->device_id = pdev->device;
|
|
dev->revision = pdev->revision;
|
|
};
|
|
|
|
|
|
|
|
char *strstr(const char *cs, const char *ct);
|
|
|
|
static int my_atoi(char **cmd)
|
|
{
|
|
char* p = *cmd;
|
|
int val = 0;
|
|
int sign = 1;
|
|
|
|
if(*p == '-')
|
|
{
|
|
sign = -1;
|
|
p++;
|
|
};
|
|
|
|
for (;; *p++) {
|
|
switch (*p) {
|
|
case '0' ... '9':
|
|
val = 10*val+(*p-'0');
|
|
break;
|
|
default:
|
|
*cmd = p;
|
|
return val*sign;
|
|
}
|
|
}
|
|
}
|
|
|
|
char* parse_mode(char *p, videomode_t *mode)
|
|
{
|
|
char c;
|
|
|
|
while( (c = *p++) == ' ');
|
|
|
|
if( c )
|
|
{
|
|
p--;
|
|
|
|
mode->width = my_atoi(&p);
|
|
if(*p == 'x') p++;
|
|
|
|
mode->height = my_atoi(&p);
|
|
if(*p == 'x') p++;
|
|
|
|
mode->bpp = 32;
|
|
|
|
mode->freq = my_atoi(&p);
|
|
|
|
if( mode->freq == 0 )
|
|
mode->freq = 60;
|
|
}
|
|
|
|
return p;
|
|
};
|
|
|
|
|
|
static char* parse_path(char *p, char *log)
|
|
{
|
|
char c;
|
|
|
|
while( (c = *p++) == ' ');
|
|
p--;
|
|
while((c = *p++) && (c != ' '))
|
|
*log++ = c;
|
|
|
|
*log = 0;
|
|
|
|
return p;
|
|
};
|
|
|
|
void parse_cmdline(char *cmdline, struct cmdtable *table, char *log, videomode_t *mode)
|
|
{
|
|
char *p = cmdline;
|
|
char *p1;
|
|
int val;
|
|
char c = *p++;
|
|
|
|
if( table )
|
|
{
|
|
while(table->key)
|
|
{
|
|
if(p1 = strstr(cmdline, table->key))
|
|
{
|
|
p1+= table->size;
|
|
*table->val = my_atoi(&p1);
|
|
}
|
|
table++;
|
|
}
|
|
}
|
|
|
|
while( c )
|
|
{
|
|
if( c == '-')
|
|
{
|
|
switch(*p++)
|
|
{
|
|
case 'l':
|
|
p = parse_path(p, log);
|
|
break;
|
|
|
|
case 'm':
|
|
p = parse_mode(p, mode);
|
|
break;
|
|
};
|
|
};
|
|
c = *p++;
|
|
};
|
|
};
|
|
|
|
char *strstr(const char *cs, const char *ct)
|
|
{
|
|
int d0, d1;
|
|
register char *__res;
|
|
__asm__ __volatile__(
|
|
"movl %6,%%edi\n\t"
|
|
"repne\n\t"
|
|
"scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */
|
|
"movl %%ecx,%%edx\n"
|
|
"1:\tmovl %6,%%edi\n\t"
|
|
"movl %%esi,%%eax\n\t"
|
|
"movl %%edx,%%ecx\n\t"
|
|
"repe\n\t"
|
|
"cmpsb\n\t"
|
|
"je 2f\n\t" /* also works for empty string, see above */
|
|
"xchgl %%eax,%%esi\n\t"
|
|
"incl %%esi\n\t"
|
|
"cmpb $0,-1(%%eax)\n\t"
|
|
"jne 1b\n\t"
|
|
"xorl %%eax,%%eax\n\t"
|
|
"2:"
|
|
: "=a" (__res), "=&c" (d0), "=&S" (d1)
|
|
: "0" (0), "1" (0xffffffff), "2" (cs), "g" (ct)
|
|
: "dx", "di");
|
|
return __res;
|
|
}
|
|
|
|
#include <linux/math64.h>
|
|
|
|
u64 long_div(u64 dividend, u64 divisor)
|
|
{
|
|
#if 1
|
|
u32 high = divisor >> 32;
|
|
u64 quot;
|
|
|
|
if (high == 0) {
|
|
quot = div_u64(dividend, divisor);
|
|
} else {
|
|
int n = 1 + fls(high);
|
|
quot = div_u64(dividend >> n, divisor >> n);
|
|
|
|
if (quot != 0)
|
|
quot--;
|
|
if ((dividend - quot * divisor) >= divisor)
|
|
quot++;
|
|
}
|
|
|
|
return quot;
|
|
#endif
|
|
// return dividend / divisor;
|
|
};
|
|
|
|
|
|
|
|
|