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9d407995 WD |
1 | #include <common.h> |
2 | #include <mpc8xx.h> | |
3 | #include <pcmcia.h> | |
045a9672 | 4 | #include <linux/compiler.h> |
9d407995 WD |
5 | |
6 | #undef CONFIG_PCMCIA | |
7 | ||
07d38a17 | 8 | #if defined(CONFIG_CMD_PCMCIA) |
9d407995 WD |
9 | #define CONFIG_PCMCIA |
10 | #endif | |
11 | ||
fc843a02 | 12 | #if defined(CONFIG_IDE) && defined(CONFIG_IDE_8xx_PCCARD) |
9d407995 WD |
13 | #define CONFIG_PCMCIA |
14 | #endif | |
15 | ||
daaf74f1 | 16 | #if defined(CONFIG_PCMCIA) |
9d407995 WD |
17 | |
18 | #if defined(CONFIG_IDE_8xx_PCCARD) | |
19 | extern int check_ide_device (int slot); | |
20 | #endif | |
21 | ||
22 | extern int pcmcia_hardware_enable (int slot); | |
23 | extern int pcmcia_voltage_set(int slot, int vcc, int vpp); | |
24 | ||
07d38a17 | 25 | #if defined(CONFIG_CMD_PCMCIA) |
9d407995 WD |
26 | extern int pcmcia_hardware_disable(int slot); |
27 | #endif | |
28 | ||
29 | static u_int m8xx_get_graycode(u_int size); | |
30 | #if 0 /* Disabled */ | |
31 | static u_int m8xx_get_speed(u_int ns, u_int is_io); | |
32 | #endif | |
33 | ||
34 | /* look up table for pgcrx registers */ | |
35 | u_int *pcmcia_pgcrx[2] = { | |
6d0f6bcf JCPV |
36 | &((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pgcra, |
37 | &((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pgcrb, | |
9d407995 WD |
38 | }; |
39 | ||
40 | /* | |
41 | * Search this table to see if the windowsize is | |
42 | * supported... | |
43 | */ | |
44 | ||
45 | #define M8XX_SIZES_NO 32 | |
46 | ||
47 | static const u_int m8xx_size_to_gray[M8XX_SIZES_NO] = | |
48 | { 0x00000001, 0x00000002, 0x00000008, 0x00000004, | |
49 | 0x00000080, 0x00000040, 0x00000010, 0x00000020, | |
50 | 0x00008000, 0x00004000, 0x00001000, 0x00002000, | |
51 | 0x00000100, 0x00000200, 0x00000800, 0x00000400, | |
52 | ||
53 | 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff, | |
54 | 0x01000000, 0x02000000, 0xffffffff, 0x04000000, | |
55 | 0x00010000, 0x00020000, 0x00080000, 0x00040000, | |
56 | 0x00800000, 0x00400000, 0x00100000, 0x00200000 }; | |
57 | ||
58 | ||
59 | /* -------------------------------------------------------------------- */ | |
60 | ||
6d0f6bcf | 61 | #define CONFIG_SYS_PCMCIA_TIMING ( PCMCIA_SHT(2) \ |
53677ef1 WD |
62 | | PCMCIA_SST(4) \ |
63 | | PCMCIA_SL(9)) | |
9d407995 WD |
64 | |
65 | /* -------------------------------------------------------------------- */ | |
66 | ||
67 | int pcmcia_on (void) | |
68 | { | |
69 | u_long reg, base; | |
70 | pcmcia_win_t *win; | |
9d407995 | 71 | u_int rc, slot; |
045a9672 | 72 | __maybe_unused u_int slotbit; |
9d407995 WD |
73 | int i; |
74 | ||
75 | debug ("Enable PCMCIA " PCMCIA_SLOT_MSG "\n"); | |
76 | ||
77 | /* intialize the fixed memory windows */ | |
6d0f6bcf JCPV |
78 | win = (pcmcia_win_t *)(&((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pbr0); |
79 | base = CONFIG_SYS_PCMCIA_MEM_ADDR; | |
9d407995 | 80 | |
6d0f6bcf | 81 | if((reg = m8xx_get_graycode(CONFIG_SYS_PCMCIA_MEM_SIZE)) == -1) { |
9d407995 | 82 | printf ("Cannot set window size to 0x%08x\n", |
6d0f6bcf | 83 | CONFIG_SYS_PCMCIA_MEM_SIZE); |
9d407995 WD |
84 | return (1); |
85 | } | |
86 | ||
87 | slotbit = PCMCIA_SLOT_x; | |
88 | for (i=0; i<PCMCIA_MEM_WIN_NO; ++i) { | |
89 | win->br = base; | |
90 | ||
91 | #if (PCMCIA_SOCKETS_NO == 2) | |
92 | if (i == 4) /* Another slot starting from win 4 */ | |
93 | slotbit = (slotbit ? PCMCIA_PSLOT_A : PCMCIA_PSLOT_B); | |
94 | #endif | |
95 | switch (i) { | |
96 | #ifdef CONFIG_IDE_8xx_PCCARD | |
97 | case 4: | |
9d407995 WD |
98 | case 0: { /* map attribute memory */ |
99 | win->or = ( PCMCIA_BSIZE_64M | |
100 | | PCMCIA_PPS_8 | |
101 | | PCMCIA_PRS_ATTR | |
102 | | slotbit | |
103 | | PCMCIA_PV | |
6d0f6bcf | 104 | | CONFIG_SYS_PCMCIA_TIMING ); |
9d407995 WD |
105 | break; |
106 | } | |
107 | case 5: | |
108 | case 1: { /* map I/O window for data reg */ | |
109 | win->or = ( PCMCIA_BSIZE_1K | |
110 | | PCMCIA_PPS_16 | |
111 | | PCMCIA_PRS_IO | |
112 | | slotbit | |
113 | | PCMCIA_PV | |
6d0f6bcf | 114 | | CONFIG_SYS_PCMCIA_TIMING ); |
9d407995 WD |
115 | break; |
116 | } | |
117 | case 6: | |
118 | case 2: { /* map I/O window for cmd/ctrl reg block */ | |
119 | win->or = ( PCMCIA_BSIZE_1K | |
120 | | PCMCIA_PPS_8 | |
121 | | PCMCIA_PRS_IO | |
122 | | slotbit | |
123 | | PCMCIA_PV | |
6d0f6bcf | 124 | | CONFIG_SYS_PCMCIA_TIMING ); |
9d407995 WD |
125 | break; |
126 | } | |
127 | #endif /* CONFIG_IDE_8xx_PCCARD */ | |
9d407995 WD |
128 | default: /* set to not valid */ |
129 | win->or = 0; | |
130 | break; | |
131 | } | |
132 | ||
133 | debug ("MemWin %d: PBR 0x%08lX POR %08lX\n", | |
134 | i, win->br, win->or); | |
6d0f6bcf | 135 | base += CONFIG_SYS_PCMCIA_MEM_SIZE; |
9d407995 WD |
136 | ++win; |
137 | } | |
138 | ||
139 | for (i=0, rc=0, slot=_slot_; i<PCMCIA_SOCKETS_NO; i++, slot = !slot) { | |
140 | /* turn off voltage */ | |
141 | if ((rc = pcmcia_voltage_set(slot, 0, 0))) | |
142 | continue; | |
143 | ||
144 | /* Enable external hardware */ | |
145 | if ((rc = pcmcia_hardware_enable(slot))) | |
146 | continue; | |
147 | ||
148 | #ifdef CONFIG_IDE_8xx_PCCARD | |
149 | if ((rc = check_ide_device(i))) | |
150 | continue; | |
151 | #endif | |
152 | } | |
153 | return rc; | |
154 | } | |
155 | ||
07d38a17 | 156 | #if defined(CONFIG_CMD_PCMCIA) |
9d407995 WD |
157 | int pcmcia_off (void) |
158 | { | |
159 | int i; | |
160 | pcmcia_win_t *win; | |
161 | ||
162 | printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n"); | |
163 | ||
164 | /* clear interrupt state, and disable interrupts */ | |
6d0f6bcf JCPV |
165 | ((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pscr = PCMCIA_MASK(_slot_); |
166 | ((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_per &= ~PCMCIA_MASK(_slot_); | |
9d407995 WD |
167 | |
168 | /* turn off interrupt and disable CxOE */ | |
169 | PCMCIA_PGCRX(_slot_) = __MY_PCMCIA_GCRX_CXOE; | |
170 | ||
171 | /* turn off memory windows */ | |
6d0f6bcf | 172 | win = (pcmcia_win_t *)(&((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pbr0); |
9d407995 WD |
173 | |
174 | for (i=0; i<PCMCIA_MEM_WIN_NO; ++i) { | |
175 | /* disable memory window */ | |
176 | win->or = 0; | |
177 | ++win; | |
178 | } | |
179 | ||
180 | /* turn off voltage */ | |
181 | pcmcia_voltage_set(_slot_, 0, 0); | |
182 | ||
183 | /* disable external hardware */ | |
184 | printf ("Shutdown and Poweroff " PCMCIA_SLOT_MSG "\n"); | |
185 | pcmcia_hardware_disable(_slot_); | |
186 | return 0; | |
187 | } | |
ddb5d86f | 188 | #endif |
9d407995 WD |
189 | |
190 | ||
191 | static u_int m8xx_get_graycode(u_int size) | |
192 | { | |
193 | u_int k; | |
194 | ||
195 | for (k = 0; k < M8XX_SIZES_NO; k++) { | |
196 | if(m8xx_size_to_gray[k] == size) | |
197 | break; | |
198 | } | |
199 | ||
200 | if((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1)) | |
201 | k = -1; | |
202 | ||
203 | return k; | |
204 | } | |
205 | ||
206 | #if 0 | |
207 | ||
9d407995 WD |
208 | static u_int m8xx_get_speed(u_int ns, u_int is_io) |
209 | { | |
210 | u_int reg, clocks, psst, psl, psht; | |
211 | ||
212 | if(!ns) { | |
213 | ||
214 | /* | |
215 | * We get called with IO maps setup to 0ns | |
216 | * if not specified by the user. | |
217 | * They should be 255ns. | |
218 | */ | |
219 | ||
220 | if(is_io) | |
221 | ns = 255; | |
222 | else | |
223 | ns = 100; /* fast memory if 0 */ | |
224 | } | |
225 | ||
226 | /* | |
227 | * In PSST, PSL, PSHT fields we tell the controller | |
228 | * timing parameters in CLKOUT clock cycles. | |
229 | * CLKOUT is the same as GCLK2_50. | |
230 | */ | |
231 | ||
232 | /* how we want to adjust the timing - in percent */ | |
233 | ||
234 | #define ADJ 180 /* 80 % longer accesstime - to be sure */ | |
235 | ||
236 | clocks = ((M8XX_BUSFREQ / 1000) * ns) / 1000; | |
237 | clocks = (clocks * ADJ) / (100*1000); | |
238 | ||
239 | if(clocks >= PCMCIA_BMT_LIMIT) { | |
240 | DEBUG(0, "Max access time limit reached\n"); | |
241 | clocks = PCMCIA_BMT_LIMIT-1; | |
242 | } | |
243 | ||
244 | psst = clocks / 7; /* setup time */ | |
245 | psht = clocks / 7; /* hold time */ | |
246 | psl = (clocks * 5) / 7; /* strobe length */ | |
247 | ||
248 | psst += clocks - (psst + psht + psl); | |
249 | ||
250 | reg = psst << 12; | |
251 | reg |= psl << 7; | |
252 | reg |= psht << 16; | |
253 | ||
254 | return reg; | |
255 | } | |
256 | #endif /* 0 */ | |
257 | ||
daaf74f1 | 258 | #endif /* CONFIG_PCMCIA */ |