Joshua Wise's Git repositories - netwatch.git/blame_incremental

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Commit	Line	Data
	1	#include <sys/io.h>
	2	#include <reg-82801b.h>
	3	#include <string.h>
	4	#include <stdint.h>
	5	#include <stdlib.h>
	6
	7	static uint16_t _get_PMBASE()
	8	{
	9	static long pmbase = -1;
	10
	11	if (pmbase == -1)
	12	pmbase = pci_read32(ICH2_LPC_BUS, ICH2_LPC_DEV, ICH2_LPC_FN, ICH2_LPC_PCI_PMBASE) & ICH2_PMBASE_MASK;
	13
	14	return pmbase;
	15	}
	16
	17	typedef struct {
	18	uint32_t signature;
	19	uint32_t type;
	20	uint8_t data[];
	21	} packet_t;
	22
	23	extern unsigned int poke(unsigned long addr, unsigned long * value);
	24
	25	int main(int argc, char **argv)
	26	{
	27	unsigned int res;
	28	packet_t * packet = (packet_t *)memalign(4096, sizeof(packet_t));
	29
	30	packet->signature = 0x1BADD00D;
	31	packet->type = 42;
	32	strcpy(packet->data, "hello, world!");
	33
	34	if (iopl(3) < 0)
	35	{
	36	perror("iopl");
	37	return 1;
	38	}
	39
	40	res = poke(_get_PMBASE() + 0x04, (void *)packet);
	41	printf("returned %p\n", res);
	42
	43	if (res == 42) {
	44	int i;
	45	for (i = 0; i < 96; i++)
	46	printf("%s\n", packet->data + i * 41);
	47	}
	48	}