GNU Linux-libre 6.9.1-gnu
[releases.git] / drivers / isdn / hardware / mISDN / hfc_multi_8xx.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * For License see notice in hfc_multi.c
4  *
5  * special IO and init functions for the embedded XHFC board
6  * from Speech Design
7  *
8  */
9
10 #include <asm/cpm1.h>
11
12 /* Change this to the value used by your board */
13 #ifndef IMAP_ADDR
14 #define IMAP_ADDR       0xFFF00000
15 #endif
16
17 static void
18 #ifdef HFC_REGISTER_DEBUG
19 HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val,
20                const char *function, int line)
21 #else
22         HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val)
23 #endif
24 {
25         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
26         writeb(reg, hc->xhfc_memaddr);
27         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
28         writeb(val, hc->xhfc_memdata);
29 }
30 static u_char
31 #ifdef HFC_REGISTER_DEBUG
32 HFC_inb_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
33 #else
34         HFC_inb_embsd(struct hfc_multi *hc, u_char reg)
35 #endif
36 {
37         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
38         writeb(reg, hc->xhfc_memaddr);
39         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
40         return readb(hc->xhfc_memdata);
41 }
42 static u_short
43 #ifdef HFC_REGISTER_DEBUG
44 HFC_inw_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
45 #else
46         HFC_inw_embsd(struct hfc_multi *hc, u_char reg)
47 #endif
48 {
49         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
50         writeb(reg, hc->xhfc_memaddr);
51         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
52         return readb(hc->xhfc_memdata);
53 }
54 static void
55 #ifdef HFC_REGISTER_DEBUG
56 HFC_wait_embsd(struct hfc_multi *hc, const char *function, int line)
57 #else
58         HFC_wait_embsd(struct hfc_multi *hc)
59 #endif
60 {
61         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
62         writeb(R_STATUS, hc->xhfc_memaddr);
63         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
64         while (readb(hc->xhfc_memdata) & V_BUSY)
65                 cpu_relax();
66 }
67
68 /* write fifo data (EMBSD) */
69 void
70 write_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
71 {
72         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
73         *hc->xhfc_memaddr = A_FIFO_DATA0;
74         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
75         while (len) {
76                 *hc->xhfc_memdata = *data;
77                 data++;
78                 len--;
79         }
80 }
81
82 /* read fifo data (EMBSD) */
83 void
84 read_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
85 {
86         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
87         *hc->xhfc_memaddr = A_FIFO_DATA0;
88         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
89         while (len) {
90                 *data = (u_char)(*hc->xhfc_memdata);
91                 data++;
92                 len--;
93         }
94 }
95
96 static int
97 setup_embedded(struct hfc_multi *hc, struct hm_map *m)
98 {
99         printk(KERN_INFO
100                "HFC-multi: card manufacturer: '%s' card name: '%s' clock: %s\n",
101                m->vendor_name, m->card_name, m->clock2 ? "double" : "normal");
102
103         hc->pci_dev = NULL;
104         if (m->clock2)
105                 test_and_set_bit(HFC_CHIP_CLOCK2, &hc->chip);
106
107         hc->leds = m->leds;
108         hc->ledstate = 0xAFFEAFFE;
109         hc->opticalsupport = m->opticalsupport;
110
111         hc->pci_iobase = 0;
112         hc->pci_membase = 0;
113         hc->xhfc_membase = NULL;
114         hc->xhfc_memaddr = NULL;
115         hc->xhfc_memdata = NULL;
116
117         /* set memory access methods */
118         if (m->io_mode) /* use mode from card config */
119                 hc->io_mode = m->io_mode;
120         switch (hc->io_mode) {
121         case HFC_IO_MODE_EMBSD:
122                 test_and_set_bit(HFC_CHIP_EMBSD, &hc->chip);
123                 hc->slots = 128; /* required */
124                 hc->HFC_outb = HFC_outb_embsd;
125                 hc->HFC_inb = HFC_inb_embsd;
126                 hc->HFC_inw = HFC_inw_embsd;
127                 hc->HFC_wait = HFC_wait_embsd;
128                 hc->read_fifo = read_fifo_embsd;
129                 hc->write_fifo = write_fifo_embsd;
130                 hc->xhfc_origmembase = XHFC_MEMBASE + XHFC_OFFSET * hc->id;
131                 hc->xhfc_membase = (u_char *)ioremap(hc->xhfc_origmembase,
132                                                      XHFC_MEMSIZE);
133                 if (!hc->xhfc_membase) {
134                         printk(KERN_WARNING
135                                "HFC-multi: failed to remap xhfc address space. "
136                                "(internal error)\n");
137                         return -EIO;
138                 }
139                 hc->xhfc_memaddr = (u_long *)(hc->xhfc_membase + 4);
140                 hc->xhfc_memdata = (u_long *)(hc->xhfc_membase);
141                 printk(KERN_INFO
142                        "HFC-multi: xhfc_membase:%#lx xhfc_origmembase:%#lx "
143                        "xhfc_memaddr:%#lx xhfc_memdata:%#lx\n",
144                        (u_long)hc->xhfc_membase, hc->xhfc_origmembase,
145                        (u_long)hc->xhfc_memaddr, (u_long)hc->xhfc_memdata);
146                 break;
147         default:
148                 printk(KERN_WARNING "HFC-multi: Invalid IO mode.\n");
149                 return -EIO;
150         }
151
152         /* Prepare the MPC8XX PortA 10 as output (address/data selector) */
153         hc->immap = (struct immap *)(IMAP_ADDR);
154         hc->immap->im_ioport.iop_papar &= ~(PA_XHFC_A0);
155         hc->immap->im_ioport.iop_paodr &= ~(PA_XHFC_A0);
156         hc->immap->im_ioport.iop_padir |=   PA_XHFC_A0;
157
158         /* Prepare the MPC8xx PortB __X__ as input (ISDN__X__IRQ) */
159         hc->pb_irqmsk = (PB_XHFC_IRQ1 << hc->id);
160         hc->immap->im_cpm.cp_pbpar &= ~(hc->pb_irqmsk);
161         hc->immap->im_cpm.cp_pbodr &= ~(hc->pb_irqmsk);
162         hc->immap->im_cpm.cp_pbdir &= ~(hc->pb_irqmsk);
163
164         /* At this point the needed config is done */
165         /* fifos are still not enabled */
166         return 0;
167 }