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

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Commit	Line	Data
	1	#include <pci.h>
	2	#include <io.h>
	3	#include <video_defines.h>
	4	#include <smram.h>
	5	#include <pci-bother.h>
	6	#include <output.h>
	7	#include <minilib.h>
	8	#include "net.h"
	9	#include "../aseg/keyboard.h"
	10
	11	static struct nic *_nic = 0x0;
	12
	13	extern struct pci_driver a3c90x_driver;
	14
	15	static char test[1024] = {0};
	16
	17	static char packet[4096] = {0};
	18
	19	typedef struct packet_t {
	20	char from[6];
	21	char to[6];
	22	unsigned short ethertype;
	23	unsigned short datalen;
	24	unsigned char command;
	25	char data[];
	26	} packet_t;
	27
	28	static unsigned char vga_read(unsigned char idx)
	29	{
	30	outb(CRTC_IDX_REG, idx);
	31	return inb(CRTC_DATA_REG);
	32	}
	33
	34	static unsigned int vga_base()
	35	{
	36	return (((unsigned int) vga_read(CRTC_START_ADDR_MSB_IDX)) << 9)
	37	+ (((unsigned int) vga_read(CRTC_START_ADDR_LSB_IDX)) << 1);
	38	}
	39
	40	void handle_command(packet_t * p)
	41	{
	42	uint16_t dl = htons(p->datalen);
	43	int i;
	44
	45	outputf("NIC: Command: 0x%x, %d bytes", p->command, dl);
	46
	47	if (p->command == 0x42)
	48	{
	49	for (i = 0; i < dl; i++)
	50	kbd_inject_key(p->data[i]);
	51	}
	52	}
	53
	54	void eth_poll()
	55	{
	56	int i;
	57	// static int c;
	58	static short pos = 0x0;
	59	unsigned short base = vga_base();
	60	unsigned char p = (unsigned char )0xB8000;
	61	smram_state_t old_state;
	62
	63	if (!_nic)
	64	return;
	65
	66	if (_nic->poll(_nic, 0)) {
	67	_nic->packet = packet;
	68	_nic->poll(_nic, 1);
	69
	70	packet_t * p = (packet_t *) packet;
	71
	72	outputf("NIC: Packet: %d 0x%x", _nic->packetlen, htons(p->ethertype));
	73	if (htons(p->ethertype) == 0x1338) {
	74	if (htons(p->datalen) + sizeof(packet_t) > _nic->packetlen) {
	75	outputf("NIC: Malformed packet");
	76	} else {
	77	handle_command(p);
	78	}
	79	}
	80	}
	81	smram_tseg_set_state(SMRAM_TSEG_OPEN);
	82	old_state = smram_save_state();
	83
	84	// if ((c++) % 2)
	85	// return;
	86
	87	if (((base + 80252)%0x8000) < base)
	88	{
	89	if ((pos > ((base + 80252)%0x8000)) && (pos < base))
	90	pos = base;
	91	} else if ((pos > base + 80252) \|\| (pos < base))
	92	pos = base;
	93
	94	test[0] = pos >> 8;
	95	test[1] = pos & 0xFF;
	96	test[2] = base >> 8;
	97	test[3] = base & 0xFF;
	98
	99	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
	100
	101	for (i = 4; i < 1024; i++)
	102	{
	103	test[i] = p[pos++];
	104	pos %= 0x8000;
	105	}
	106	smram_restore_state(old_state);
	107	_nic->transmit("\x00\x03\x93\x87\x84\x8C", 0x1337, 1024, test);
	108	}
	109
	110	int eth_register(struct nic *nic)
	111	{
	112	if (_nic)
	113	return -1;
	114	_nic = nic;
	115	return 0;
	116	}
	117
	118	void eth_init()
	119	{
	120	/* Required for DMA to work. :( */
	121	smram_tseg_set_state(SMRAM_TSEG_OPEN);
	122	pci_probe_driver(a3c90x_driver);
	123	}