xref: /titanic_52/usr/src/uts/common/io/chxge/com/cspi.c (revision d39a76e7b087a3d0927cbe6898dc0a6770fa6c68)
1*d39a76e7Sxw161283 /*
2*d39a76e7Sxw161283  * CDDL HEADER START
3*d39a76e7Sxw161283  *
4*d39a76e7Sxw161283  * The contents of this file are subject to the terms of the
5*d39a76e7Sxw161283  * Common Development and Distribution License (the "License").
6*d39a76e7Sxw161283  * You may not use this file except in compliance with the License.
7*d39a76e7Sxw161283  *
8*d39a76e7Sxw161283  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*d39a76e7Sxw161283  * or http://www.opensolaris.org/os/licensing.
10*d39a76e7Sxw161283  * See the License for the specific language governing permissions
11*d39a76e7Sxw161283  * and limitations under the License.
12*d39a76e7Sxw161283  *
13*d39a76e7Sxw161283  * When distributing Covered Code, include this CDDL HEADER in each
14*d39a76e7Sxw161283  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*d39a76e7Sxw161283  * If applicable, add the following below this CDDL HEADER, with the
16*d39a76e7Sxw161283  * fields enclosed by brackets "[]" replaced with your own identifying
17*d39a76e7Sxw161283  * information: Portions Copyright [yyyy] [name of copyright owner]
18*d39a76e7Sxw161283  *
19*d39a76e7Sxw161283  * CDDL HEADER END
20*d39a76e7Sxw161283  */
21*d39a76e7Sxw161283 
22*d39a76e7Sxw161283 /*
23*d39a76e7Sxw161283  * Copyright (C) 2003-2005 Chelsio Communications.  All rights reserved.
24*d39a76e7Sxw161283  */
25*d39a76e7Sxw161283 
26*d39a76e7Sxw161283 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* cspi.c */
27*d39a76e7Sxw161283 
28*d39a76e7Sxw161283 #include "common.h"
29*d39a76e7Sxw161283 #include "regs.h"
30*d39a76e7Sxw161283 #include "cspi.h"
31*d39a76e7Sxw161283 
32*d39a76e7Sxw161283 struct pecspi {
33*d39a76e7Sxw161283 	adapter_t *adapter;
34*d39a76e7Sxw161283 };
35*d39a76e7Sxw161283 
36*d39a76e7Sxw161283 int t1_cspi_intr_enable(struct pecspi *cspi)
37*d39a76e7Sxw161283 {
38*d39a76e7Sxw161283 	t1_write_reg_4(cspi->adapter, A_CSPI_INTR_ENABLE, 0xffffffff);
39*d39a76e7Sxw161283 	return 0;
40*d39a76e7Sxw161283 }
41*d39a76e7Sxw161283 
42*d39a76e7Sxw161283 int t1_cspi_intr_disable(struct pecspi *cspi)
43*d39a76e7Sxw161283 {
44*d39a76e7Sxw161283 	t1_write_reg_4(cspi->adapter, A_CSPI_INTR_ENABLE, 0);
45*d39a76e7Sxw161283 	return 0;
46*d39a76e7Sxw161283 }
47*d39a76e7Sxw161283 
48*d39a76e7Sxw161283 int t1_cspi_intr_status_read(struct pecspi *cspi, u32 *status)
49*d39a76e7Sxw161283 {
50*d39a76e7Sxw161283 	*status = t1_read_reg_4(cspi->adapter, A_CSPI_INTR_STATUS);
51*d39a76e7Sxw161283 
52*d39a76e7Sxw161283 	/* TBD XXX Need to poll in case of parity/overflow */
53*d39a76e7Sxw161283 	/* t1_write_reg_4( adapter, CSPI_REG_RAMSTATUS, ); */
54*d39a76e7Sxw161283 
55*d39a76e7Sxw161283 	return 0;
56*d39a76e7Sxw161283 }
57*d39a76e7Sxw161283 
58*d39a76e7Sxw161283 int t1_cspi_init(struct pecspi *cspi)
59*d39a76e7Sxw161283 {
60*d39a76e7Sxw161283 	adapter_t *adapter = cspi->adapter;
61*d39a76e7Sxw161283 
62*d39a76e7Sxw161283 	t1_write_reg_4(adapter, A_CSPI_CALENDAR_LEN, 15);
63*d39a76e7Sxw161283 	t1_write_reg_4(adapter, A_CSPI_FIFO_STATUS_ENABLE, 1);
64*d39a76e7Sxw161283 	return 0;
65*d39a76e7Sxw161283 }
66*d39a76e7Sxw161283 
67*d39a76e7Sxw161283 struct pecspi *t1_cspi_create(adapter_t *adapter)
68*d39a76e7Sxw161283 {
69*d39a76e7Sxw161283 	struct pecspi *cspi = t1_os_malloc_wait_zero(sizeof(*cspi));
70*d39a76e7Sxw161283 
71*d39a76e7Sxw161283 	if (cspi)
72*d39a76e7Sxw161283 		cspi->adapter = adapter;
73*d39a76e7Sxw161283 	return cspi;
74*d39a76e7Sxw161283 }
75*d39a76e7Sxw161283 
76*d39a76e7Sxw161283 void t1_cspi_destroy(struct pecspi *cspi)
77*d39a76e7Sxw161283 {
78*d39a76e7Sxw161283 	t1_os_free((void *)cspi, sizeof(*cspi));
79*d39a76e7Sxw161283 }
80