void pit_set_timer(uint32_t divisor, uint32_t mode)
{
if (divisor & 0xffff0000)
warn("Divisor too large!");
mode = TIMER_SEL0|TIMER_16BIT|mode;
outb(TIMER_MODE, mode);
outb(TIMER_CNTR0, divisor & 0xff);
outb(TIMER_CNTR0, (divisor >> 8) );
system_timing.pit_mode = SINIT(mode);
system_timing.pit_divisor = SINIT(divisor);
// cprintf("timer mode set to %d, divisor %d\n",mode, divisor);
}
/************** Cache Related Functions *****************/
void cache_init()
{
// Initialize the caches available on this system.
// TODO: Should call out to something reading the acpi tables from
// memory, or something similar. For now, just initialize them inline
available_caches.l1 = SINIT(&l1);
available_caches.l2 = SINIT(&l2);
available_caches.l3 = SINIT(&l3);
llc_cache = &l3;
init_cache_properties(&l1, 32, 8, 64);
init_cache_properties(&l2, 256, 8, 64);
init_cache_properties(&l3, 8192, 16, 64);
printk("Cache init successful\n");
}
/************** Cache Related Functions *****************/
void cache_init()
{
// Initialize the caches available on this system.
// TODO: Should call out to something reading the acpi tables from
// memory, or something similar. For now, just initialize them inline
available_caches.l1 = SINIT(&l1);
available_caches.l2 = SINIT(&l2);
available_caches.l3 = SINIT(&l3);
llc_cache = &l3;
#ifdef __CONFIG_BOXBORO__
/* level (ignoring L1I), size, ways, CL size) */
init_cache_properties(&l1, 32, 8, 64); /* 1 color */
init_cache_properties(&l2, 256, 8, 64); /* 16 colors */
init_cache_properties(&l3, 24576, 24, 64); /* 256 colors */
#else /* Core i7 */
init_cache_properties(&l1, 32, 8, 64); /* 1 color */
init_cache_properties(&l2, 256, 8, 64); /* 16 colors */
init_cache_properties(&l3, 8192, 16, 64); /* 128 colors */
#endif /* __CONFIG_E1000_ON_BOXBORO__ */
printk("Cache init successful\n");
}
// timer init calibrates both tsc timer and lapic timer using PIT
void timer_init(void){
uint64_t tscval[2];
long timercount[2];
pit_set_timer(0xffff, TIMER_RATEGEN);
// assume tsc exist
tscval[0] = read_tsc();
udelay_pit(1000000);
tscval[1] = read_tsc();
system_timing.tsc_freq = SINIT(tscval[1] - tscval[0]);
cprintf("TSC Frequency: %llu\n", system_timing.tsc_freq);
__lapic_set_timer(0xffffffff, LAPIC_TIMER_DEFAULT_VECTOR, FALSE,
LAPIC_TIMER_DEFAULT_DIVISOR);
// Mask the LAPIC Timer, so we never receive this interrupt (minor race)
mask_lapic_lvt(LAPIC_LVT_TIMER);
timercount[0] = read_mmreg32(LAPIC_TIMER_CURRENT);
udelay_pit(1000000);
timercount[1] = read_mmreg32(LAPIC_TIMER_CURRENT);
system_timing.bus_freq = SINIT((timercount[0] - timercount[1])*128);
cprintf("Bus Frequency: %llu\n", system_timing.bus_freq);
}
nserror mimesniff_init(void)
{
lwc_error lerror;
#define SINIT(v, s) \
lerror = lwc_intern_string(s, SLEN(s), &v); \
if (lerror != lwc_error_ok) \
return NSERROR_NOMEM
SINIT(unknown_unknown, "unknown/unknown");
SINIT(application_unknown, "application/unknown");
SINIT(any, "*/*");
SINIT(text_xml, "text/xml");
SINIT(application_xml, "application/xml");
SINIT(text_html, "text/html");
SINIT(text_plain, "text/plain");
SINIT(application_octet_stream, "application/octet-stream");
SINIT(image_gif, "image/gif");
SINIT(image_png, "image/png");
SINIT(image_jpeg, "image/jpeg");
SINIT(image_bmp, "image/bmp");
SINIT(image_vnd_microsoft_icon, "image/vnd.microsoft.icon");
SINIT(image_webp, "image/webp");
SINIT(application_rss_xml, "application/rss+xml");
SINIT(application_atom_xml, "application/atom+xml");
SINIT(audio_wave, "audio/wave");
SINIT(application_ogg, "application/ogg");
SINIT(video_webm, "video/webm");
SINIT(application_x_rar_compressed, "application/x-rar-compressed");
SINIT(application_zip, "application/zip");
SINIT(application_x_gzip, "application/x-gzip");
SINIT(application_postscript, "application/postscript");
SINIT(application_pdf, "application/pdf");
SINIT(video_mp4, "video/mp4");
SINIT(image_svg, "image/svg+xml");
#undef SINIT
return NSERROR_OK;
}
