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_interruptible_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 ca->hif_event &= ~MANTIS_SBUF_OPDONE;
59 int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr)
61 struct mantis_pci *mantis = ca->ca_priv;
62 u32 hif_addr = 0, data, count = 4;
64 dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Read", mantis->num);
65 hif_addr |= MANTIS_GPIF_HIFRDWRN;
66 hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
67 hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
70 mmwrite(hif_addr, MANTIS_GPIF_BRADDR);
71 mmwrite(count, MANTIS_GPIF_BRBYTES);
75 mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
76 if (mantis_hif_data_available(ca) != 0) {
77 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer burst read failed", mantis->num);
80 if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
81 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num);
84 data = mmread(MANTIS_GPIF_HIFDIN);
86 return (data >> 24) & 0xff;
89 int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data)
91 struct mantis_slot *slot = ca->slot;
92 struct mantis_pci *mantis = ca->ca_priv;
95 dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Write", mantis->num);
96 hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
97 hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
98 hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
101 mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */
103 mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
104 mmwrite(data, MANTIS_GPIF_HIFDOUT);
105 ca->hif_job_queue = MANTIS_HIF_MEMWR;
107 if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
108 ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
109 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
112 ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
116 int mantis_hif_read_iom(struct mantis_ca *ca, u32 addr)
118 struct mantis_pci *mantis = ca->ca_priv;
119 u32 data, hif_addr = 0;
121 dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Read", mantis->num);
122 hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
123 hif_addr |= MANTIS_GPIF_HIFRDWRN;
124 hif_addr |= MANTIS_GPIF_PCMCIAIOM;
127 mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
128 ca->hif_job_queue = MANTIS_HIF_IOMRD;
130 if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
131 ca->hif_job_queue &= ~MANTIS_HIF_IOMRD;
132 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
136 ca->hif_job_queue &= ~MANTIS_HIF_IOMRD;
137 data = mmread(MANTIS_GPIF_HIFDIN);
138 hif_addr |= MANTIS_GPIF_PCMCIAREG;
139 mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
144 int mantis_hif_write_iom(struct mantis_ca *ca, u32 addr, u8 data)
146 struct mantis_pci *mantis = ca->ca_priv;
149 dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Write", mantis->num);
150 hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
151 hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
152 hif_addr |= MANTIS_GPIF_PCMCIAIOM;
155 mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
156 mmwrite(data, MANTIS_GPIF_HIFDOUT);
158 ca->hif_job_queue = MANTIS_HIF_IOMWR;
159 if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
160 ca->hif_job_queue &= ~MANTIS_HIF_IOMWR;
161 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
165 ca->hif_job_queue &= ~MANTIS_HIF_IOMWR;
166 hif_addr |= MANTIS_GPIF_PCMCIAREG;
167 mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
172 int mantis_hif_init(struct mantis_ca *ca)
174 struct mantis_pci *mantis = ca->ca_priv;
177 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num);
178 init_waitqueue_head(&ca->hif_data_wq);
179 init_waitqueue_head(&ca->hif_opdone_wq);
181 irqcfg = mmread(MANTIS_GPIF_IRQCFG);
182 irqcfg |= MANTIS_MASK_BRRDY;
183 mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
188 void mantis_hif_exit(struct mantis_ca *ca)
190 struct mantis_pci *mantis = ca->ca_priv;
193 dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num);
194 irqcfg = mmread(MANTIS_GPIF_IRQCFG);
195 irqcfg &= ~MANTIS_MASK_BRRDY;
196 mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);