Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * |
| 4 | Copyright (c) Eicon Networks, 2002. |
| 5 | * |
| 6 | This source file is supplied for the use with |
| 7 | Eicon Networks range of DIVA Server Adapters. |
| 8 | * |
| 9 | Eicon File Revision : 2.1 |
| 10 | * |
| 11 | This program is free software; you can redistribute it and/or modify |
| 12 | it under the terms of the GNU General Public License as published by |
| 13 | the Free Software Foundation; either version 2, or (at your option) |
| 14 | any later version. |
| 15 | * |
| 16 | This program is distributed in the hope that it will be useful, |
| 17 | but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY |
| 18 | implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 19 | See the GNU General Public License for more details. |
| 20 | * |
| 21 | You should have received a copy of the GNU General Public License |
| 22 | along with this program; if not, write to the Free Software |
| 23 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 24 | * |
| 25 | */ |
| 26 | #include "platform.h" |
| 27 | #include "di_defs.h" |
| 28 | #include "pc.h" |
| 29 | #include "pr_pc.h" |
| 30 | #include "di.h" |
| 31 | #include "mi_pc.h" |
| 32 | #include "pc_maint.h" |
| 33 | #include "divasync.h" |
| 34 | #include "io.h" |
| 35 | #include "helpers.h" |
| 36 | #include "dsrv_pri.h" |
| 37 | #include "dsp_defs.h" |
| 38 | /*****************************************************************************/ |
| 39 | #define MAX_XLOG_SIZE (64 * 1024) |
| 40 | /* ------------------------------------------------------------------------- |
| 41 | Does return offset between ADAPTER->ram and real begin of memory |
| 42 | ------------------------------------------------------------------------- */ |
| 43 | static dword pri_ram_offset (ADAPTER* a) { |
| 44 | return ((dword)MP_SHARED_RAM_OFFSET); |
| 45 | } |
| 46 | /* ------------------------------------------------------------------------- |
| 47 | Recovery XLOG buffer from the card |
| 48 | ------------------------------------------------------------------------- */ |
| 49 | static void pri_cpu_trapped (PISDN_ADAPTER IoAdapter) { |
| 50 | byte __iomem *base ; |
| 51 | word *Xlog ; |
| 52 | dword regs[4], TrapID, size ; |
| 53 | Xdesc xlogDesc ; |
| 54 | /* |
| 55 | * check for trapped MIPS 46xx CPU, dump exception frame |
| 56 | */ |
| 57 | base = DIVA_OS_MEM_ATTACH_ADDRESS(IoAdapter); |
| 58 | TrapID = READ_DWORD(&base[0x80]) ; |
| 59 | if ( (TrapID == 0x99999999) || (TrapID == 0x99999901) ) |
| 60 | { |
| 61 | dump_trap_frame (IoAdapter, &base[0x90]) ; |
| 62 | IoAdapter->trapped = 1 ; |
| 63 | } |
| 64 | regs[0] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x70]); |
| 65 | regs[1] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x74]); |
| 66 | regs[2] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x78]); |
| 67 | regs[3] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x7c]); |
| 68 | regs[0] &= IoAdapter->MemorySize - 1 ; |
| 69 | if ( (regs[0] < IoAdapter->MemorySize - 1) ) |
| 70 | { |
| 71 | if ( !(Xlog = (word *)diva_os_malloc (0, MAX_XLOG_SIZE)) ) { |
| 72 | DIVA_OS_MEM_DETACH_ADDRESS(IoAdapter, base); |
| 73 | return ; |
| 74 | } |
| 75 | size = IoAdapter->MemorySize - regs[0] ; |
| 76 | if ( size > MAX_XLOG_SIZE ) |
| 77 | size = MAX_XLOG_SIZE ; |
| 78 | memcpy_fromio(Xlog, &base[regs[0]], size) ; |
| 79 | xlogDesc.buf = Xlog ; |
| 80 | xlogDesc.cnt = READ_WORD(&base[regs[1] & (IoAdapter->MemorySize - 1)]) ; |
| 81 | xlogDesc.out = READ_WORD(&base[regs[2] & (IoAdapter->MemorySize - 1)]) ; |
| 82 | dump_xlog_buffer (IoAdapter, &xlogDesc) ; |
| 83 | diva_os_free (0, Xlog) ; |
| 84 | IoAdapter->trapped = 2 ; |
| 85 | } |
| 86 | DIVA_OS_MEM_DETACH_ADDRESS(IoAdapter, base); |
| 87 | } |
| 88 | /* ------------------------------------------------------------------------- |
| 89 | Hardware reset of PRI card |
| 90 | ------------------------------------------------------------------------- */ |
| 91 | static void reset_pri_hardware (PISDN_ADAPTER IoAdapter) { |
| 92 | byte __iomem *p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter); |
| 93 | WRITE_BYTE(p, _MP_RISC_RESET | _MP_LED1 | _MP_LED2); |
| 94 | diva_os_wait (50) ; |
| 95 | WRITE_BYTE(p, 0x00); |
| 96 | diva_os_wait (50) ; |
| 97 | DIVA_OS_MEM_DETACH_RESET(IoAdapter, p); |
| 98 | } |
| 99 | /* ------------------------------------------------------------------------- |
| 100 | Stop Card Hardware |
| 101 | ------------------------------------------------------------------------- */ |
| 102 | static void stop_pri_hardware (PISDN_ADAPTER IoAdapter) { |
| 103 | dword i; |
| 104 | byte __iomem *p; |
| 105 | dword volatile __iomem *cfgReg = (void __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter); |
| 106 | WRITE_DWORD(&cfgReg[3], 0); |
| 107 | WRITE_DWORD(&cfgReg[1], 0); |
| 108 | DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg); |
| 109 | IoAdapter->a.ram_out (&IoAdapter->a, &RAM->SWReg, SWREG_HALT_CPU) ; |
| 110 | i = 0 ; |
| 111 | while ( (i < 100) && (IoAdapter->a.ram_in (&IoAdapter->a, &RAM->SWReg) != 0) ) |
| 112 | { |
| 113 | diva_os_wait (1) ; |
| 114 | i++ ; |
| 115 | } |
| 116 | DBG_TRC(("%s: PRI stopped (%d)", IoAdapter->Name, i)) |
| 117 | cfgReg = (void __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter); |
| 118 | WRITE_DWORD(&cfgReg[0],((dword)(~0x03E00000))); |
| 119 | DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg); |
| 120 | diva_os_wait (1) ; |
| 121 | p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter); |
| 122 | WRITE_BYTE(p, _MP_RISC_RESET | _MP_LED1 | _MP_LED2); |
| 123 | DIVA_OS_MEM_DETACH_RESET(IoAdapter, p); |
| 124 | } |
| 125 | static int load_pri_hardware (PISDN_ADAPTER IoAdapter) { |
| 126 | return (0); |
| 127 | } |
| 128 | /* -------------------------------------------------------------------------- |
| 129 | PRI Adapter interrupt Service Routine |
| 130 | -------------------------------------------------------------------------- */ |
| 131 | static int pri_ISR (struct _ISDN_ADAPTER* IoAdapter) { |
| 132 | byte __iomem *cfg = DIVA_OS_MEM_ATTACH_CFG(IoAdapter); |
| 133 | if ( !(READ_DWORD(cfg) & 0x80000000) ) { |
| 134 | DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfg); |
| 135 | return (0) ; |
| 136 | } |
| 137 | /* |
| 138 | clear interrupt line |
| 139 | */ |
| 140 | WRITE_DWORD(cfg, (dword)~0x03E00000) ; |
| 141 | DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfg); |
| 142 | IoAdapter->IrqCount++ ; |
| 143 | if ( IoAdapter->Initialized ) |
| 144 | { |
| 145 | diva_os_schedule_soft_isr (&IoAdapter->isr_soft_isr); |
| 146 | } |
| 147 | return (1) ; |
| 148 | } |
| 149 | /* ------------------------------------------------------------------------- |
| 150 | Disable interrupt in the card hardware |
| 151 | ------------------------------------------------------------------------- */ |
| 152 | static void disable_pri_interrupt (PISDN_ADAPTER IoAdapter) { |
| 153 | dword volatile __iomem *cfgReg = (dword volatile __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter) ; |
| 154 | WRITE_DWORD(&cfgReg[3], 0); |
| 155 | WRITE_DWORD(&cfgReg[1], 0); |
| 156 | WRITE_DWORD(&cfgReg[0], (dword)(~0x03E00000)) ; |
| 157 | DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg); |
| 158 | } |
| 159 | /* ------------------------------------------------------------------------- |
| 160 | Install entry points for PRI Adapter |
| 161 | ------------------------------------------------------------------------- */ |
| 162 | static void prepare_common_pri_functions (PISDN_ADAPTER IoAdapter) { |
| 163 | ADAPTER *a = &IoAdapter->a ; |
| 164 | a->ram_in = mem_in ; |
| 165 | a->ram_inw = mem_inw ; |
| 166 | a->ram_in_buffer = mem_in_buffer ; |
| 167 | a->ram_look_ahead = mem_look_ahead ; |
| 168 | a->ram_out = mem_out ; |
| 169 | a->ram_outw = mem_outw ; |
| 170 | a->ram_out_buffer = mem_out_buffer ; |
| 171 | a->ram_inc = mem_inc ; |
| 172 | a->ram_offset = pri_ram_offset ; |
| 173 | a->ram_out_dw = mem_out_dw; |
| 174 | a->ram_in_dw = mem_in_dw; |
| 175 | a->istream_wakeup = pr_stream; |
| 176 | IoAdapter->out = pr_out ; |
| 177 | IoAdapter->dpc = pr_dpc ; |
| 178 | IoAdapter->tst_irq = scom_test_int ; |
| 179 | IoAdapter->clr_irq = scom_clear_int ; |
| 180 | IoAdapter->pcm = (struct pc_maint *)(MIPS_MAINT_OFFS |
| 181 | - MP_SHARED_RAM_OFFSET) ; |
| 182 | IoAdapter->load = load_pri_hardware ; |
| 183 | IoAdapter->disIrq = disable_pri_interrupt ; |
| 184 | IoAdapter->rstFnc = reset_pri_hardware ; |
| 185 | IoAdapter->stop = stop_pri_hardware ; |
| 186 | IoAdapter->trapFnc = pri_cpu_trapped ; |
| 187 | IoAdapter->diva_isr_handler = pri_ISR; |
| 188 | } |
| 189 | /* ------------------------------------------------------------------------- |
| 190 | Install entry points for PRI Adapter |
| 191 | ------------------------------------------------------------------------- */ |
| 192 | void prepare_pri_functions (PISDN_ADAPTER IoAdapter) { |
| 193 | IoAdapter->MemorySize = MP_MEMORY_SIZE ; |
| 194 | prepare_common_pri_functions (IoAdapter) ; |
| 195 | diva_os_prepare_pri_functions (IoAdapter); |
| 196 | } |
| 197 | /* ------------------------------------------------------------------------- |
| 198 | Install entry points for PRI Rev.2 Adapter |
| 199 | ------------------------------------------------------------------------- */ |
| 200 | void prepare_pri2_functions (PISDN_ADAPTER IoAdapter) { |
| 201 | IoAdapter->MemorySize = MP2_MEMORY_SIZE ; |
| 202 | prepare_common_pri_functions (IoAdapter) ; |
| 203 | diva_os_prepare_pri2_functions (IoAdapter); |
| 204 | } |
| 205 | /* ------------------------------------------------------------------------- */ |