Beispiel #1
0
/* Put MC5 in M-Bus mode. */
static void mc5_dbgi_mode_disable(const struct mc5 *mc5)
{
	t3_write_reg(mc5->adapter, A_MC5_DB_CONFIG,
		     V_TMMODE(mc5->mode == MC5_MODE_72_BIT) |
		     V_COMPEN(mc5->mode == MC5_MODE_72_BIT) |
		     V_PRTYEN(mc5->parity_enabled) | F_MBUSEN);
}
Beispiel #2
0
/**
 *	t3_mc5_init - initialize MC5 and the TCAM
 *	@mc5: the MC5 handle
 *	@nservers: desired number the TCP servers (listening ports)
 *	@nfilters: desired number of HW filters (classifiers)
 *	@nroutes: desired number of routes
 *
 *	Initialize MC5 and the TCAM and partition the TCAM for the requested
 *	number of servers, filters, and routes.  The number of routes is
 *	typically 0 except for specialized uses of the T3 adapters.
 */
int t3_mc5_init(struct mc5 *mc5, unsigned int nservers, unsigned int nfilters,
		unsigned int nroutes)
{
	int err;
	unsigned int tcam_size = mc5->tcam_size;
	unsigned int mode72 = mc5->mode == MC5_MODE_72_BIT;
	adapter_t *adap = mc5->adapter;

	if (!tcam_size)
		return 0;

	if (nroutes > MAX_ROUTES || nroutes + nservers + nfilters > tcam_size)
		return -EINVAL;

	if (nfilters)
		mc5->parity_enabled = 0;

	/* Reset the TCAM */
	t3_set_reg_field(adap, A_MC5_DB_CONFIG, F_TMMODE | F_COMPEN,
			 V_COMPEN(mode72) | V_TMMODE(mode72) | F_TMRST);
	if (t3_wait_op_done(adap, A_MC5_DB_CONFIG, F_TMRDY, 1, 500, 0)) {
		CH_ERR(adap, "TCAM reset timed out\n");
		return -1;
	}

	t3_write_reg(adap, A_MC5_DB_ROUTING_TABLE_INDEX, tcam_size - nroutes);
	t3_write_reg(adap, A_MC5_DB_FILTER_TABLE,
		     tcam_size - nroutes - nfilters);
	t3_write_reg(adap, A_MC5_DB_SERVER_INDEX,
		     tcam_size - nroutes - nfilters - nservers);

	/* All the TCAM addresses we access have only the low 32 bits non 0 */
	t3_write_reg(adap, A_MC5_DB_DBGI_REQ_ADDR1, 0);
	t3_write_reg(adap, A_MC5_DB_DBGI_REQ_ADDR2, 0);

	mc5_dbgi_mode_enable(mc5);

	switch (mc5->part_type) {
	case IDT75P52100:
		err = init_idt52100(mc5);
		break;
	case IDT75N43102:
		err = init_idt43102(mc5);
		break;
	default:
		CH_ERR(adap, "Unsupported TCAM type %d\n", mc5->part_type);
		err = -EINVAL;
		break;
	}

	mc5_dbgi_mode_disable(mc5);
	return err;
}