2 Mantis PCI bridge driver
4 Copyright (C) 2005, 2006 Manu Abraham (abraham.manu@gmail.com)
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "mantis_common.h"
22 #include "mantis_hif.h"
23 #include "mantis_link.h" /* temporary due to physical layer stuff */
25 static int mantis_hif_data_available(struct mantis_ca *ca)
27 struct mantis_pci *mantis = ca->ca_priv;
30 if (wait_event_interruptible_timeout(ca->hif_data_wq,
31 ca->sbuf_status & MANTIS_SBUF_DATA_AVAIL,
32 msecs_to_jiffies(500)) == -ERESTARTSYS) {
34 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Read wait event timeout !", mantis->num);
37 ca->sbuf_status &= ~MANTIS_SBUF_DATA_AVAIL;
42 static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca)
44 struct mantis_pci *mantis = ca->ca_priv;
47 if (wait_event_timeout(ca->hif_opdone_wq,
48 ca->hif_event & MANTIS_SBUF_OPDONE,
49 msecs_to_jiffies(500)) == -ERESTARTSYS) {
51 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num);
54 dprintk(verbose, MANTIS_DEBUG, 1, "Smart Buffer Operation complete");
55 ca->hif_event &= ~MANTIS_SBUF_OPDONE;
60 static int mantis_hif_write_wait(struct mantis_ca *ca)
62 struct mantis_pci *mantis = ca->ca_priv;
63 u32 opdone = 0, timeout = 0;
66 if (wait_event_timeout(ca->hif_write_wq,
67 mantis->gpif_status & MANTIS_GPIF_WRACK,
68 msecs_to_jiffies(500)) == -ERESTARTSYS) {
70 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Write ACK timed out !", mantis->num);
73 dprintk(verbose, MANTIS_DEBUG, 1, "Write Acknowledged");
74 mantis->gpif_status &= ~MANTIS_GPIF_WRACK;
76 opdone = (mmread(MANTIS_GPIF_STATUS) & MANTIS_SBUF_OPDONE);
80 dprintk(verbose, MANTIS_ERROR, 1, "Adater(%d) Slot(0): Write operation timed out!", mantis->num);
85 dprintk(verbose, MANTIS_DEBUG, 1, "HIF Write success");
90 int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr)
92 struct mantis_pci *mantis = ca->ca_priv;
93 u32 hif_addr = 0, data, count = 4;
95 dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Read", mantis->num);
96 hif_addr |= MANTIS_GPIF_HIFRDWRN;
97 hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
98 hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
101 mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_BRADDR);
102 mmwrite(count, MANTIS_GPIF_BRBYTES);
106 mmwrite(hif_addr, MANTIS_GPIF_ADDR);
107 if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
108 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num);
111 data = mmread(MANTIS_GPIF_DIN);
112 dprintk(verbose, MANTIS_DEBUG, 1, "Mem Read: 0x%02x", data);
113 return (data >> 24) & 0xff;
116 int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data)
118 struct mantis_slot *slot = ca->slot;
119 struct mantis_pci *mantis = ca->ca_priv;
122 dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Write", mantis->num);
123 hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
124 hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
125 hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
128 mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */
129 mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_ADDR);
130 mmwrite(data, MANTIS_GPIF_DOUT);
132 if (mantis_hif_write_wait(ca) != 0) {
133 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
136 dprintk(verbose, MANTIS_DEBUG, 1, "Mem Write: (0x%02x to 0x%02x)", data, addr);
141 int mantis_hif_read_iom(struct mantis_ca *ca, u32 addr)
143 struct mantis_pci *mantis = ca->ca_priv;
144 u32 data, hif_addr = 0;
146 dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Read", mantis->num);
147 hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
148 hif_addr |= MANTIS_GPIF_HIFRDWRN;
149 hif_addr |= MANTIS_GPIF_PCMCIAIOM;
152 mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_BRADDR);
153 mmwrite(1, MANTIS_GPIF_BRBYTES);
157 mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_ADDR);
159 if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
160 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
163 data = mmread(MANTIS_GPIF_DIN);
164 dprintk(verbose, MANTIS_DEBUG, 1, "I/O Read: 0x%02x", data);
170 int mantis_hif_write_iom(struct mantis_ca *ca, u32 addr, u8 data)
172 struct mantis_pci *mantis = ca->ca_priv;
175 dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Write", mantis->num);
176 hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
177 hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
178 hif_addr |= MANTIS_GPIF_PCMCIAIOM;
181 mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_ADDR);
182 mmwrite(data, MANTIS_GPIF_DOUT);
184 if (mantis_hif_write_wait(ca) != 0) {
185 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
188 dprintk(verbose, MANTIS_DEBUG, 1, "I/O Write: (0x%02x to 0x%02x)", data, addr);
194 int mantis_hif_init(struct mantis_ca *ca)
196 struct mantis_slot *slot = ca->slot;
197 struct mantis_pci *mantis = ca->ca_priv;
200 slot[0].slave_cfg = 0x70773028;
201 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num);
202 init_waitqueue_head(&ca->hif_data_wq);
203 init_waitqueue_head(&ca->hif_opdone_wq);
204 init_waitqueue_head(&ca->hif_write_wq);
206 irqcfg = mmread(MANTIS_GPIF_IRQCFG);
207 irqcfg = MANTIS_MASK_BRRDY |
214 mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
219 void mantis_hif_exit(struct mantis_ca *ca)
221 struct mantis_pci *mantis = ca->ca_priv;
224 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num);
225 irqcfg = mmread(MANTIS_GPIF_IRQCFG);
226 irqcfg &= ~MANTIS_MASK_BRRDY;
227 mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);