From: Joshua Wise Date: Mon, 6 Oct 2008 03:58:52 +0000 (-0400) Subject: Hacky network transmitter. X-Git-Url: http://git.joshuawise.com/netwatch.git/commitdiff_plain/6c744a5a5235383b230e3854db9458409ad8781a?ds=sidebyside;hp=--cc Hacky network transmitter. --- 6c744a5a5235383b230e3854db9458409ad8781a diff --git a/net/net.c b/net/net.c index 01b4521..98571b0 100644 --- a/net/net.c +++ b/net/net.c @@ -1,4 +1,7 @@ #include +#include +#include +#include #include #include #include "net.h" @@ -9,30 +12,50 @@ extern struct pci_driver a3c90x_driver; static char test[1024] = {0}; +static unsigned char vga_read(unsigned char idx) +{ + outb(CRTC_IDX_REG, idx); + return inb(CRTC_DATA_REG); +} + +static unsigned int vga_base() +{ + return (((unsigned int) vga_read(CRTC_START_ADDR_MSB_IDX)) << 9) + + (((unsigned int) vga_read(CRTC_START_ADDR_LSB_IDX)) << 1); +} + void eth_poll() { int i; - static int c; +// static int c; + static short pos = 0x0; + unsigned short base = vga_base(); + unsigned char *p = (unsigned char *)0xB8000; + smram_state_t old_state; if (!_nic) return; _nic->poll(_nic, 0); + smram_tseg_set_state(SMRAM_TSEG_OPEN); + old_state = smram_save_state(); - if ((c++) % 30) - return; +// if ((c++) % 2) +// return; + + test[0] = pos >> 8; + test[1] = pos & 0xFF; + test[2] = base >> 8; + test[3] = base & 0xFF; + + smram_aseg_set_state(SMRAM_ASEG_SMMCODE); - for (i = 0; i < 1024; i++) + for (i = 4; i < 1024; i++) { - switch(i%5) - { - case 0: test[i] = 'H'; break; - case 1: test[i] = 'A'; break; - case 2: test[i] = 'R'; break; - case 3: test[i] = 'B'; break; - case 4: test[i] = 'L'; break; - } + test[i] = p[pos++]; + pos %= 0x8000; } + smram_restore_state(old_state); _nic->transmit("\x00\x03\x93\x87\x84\x8C", 0x1337, 1024, test); }