/* * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series. * * (C) 1999-2000 Magnus Damm * * "The ExCA standard specifies that socket controllers should provide * two IO and five memory windows per socket, which can be independently * configured and positioned in the host address space and mapped to * arbitrary segments of card address space. " - David A Hinds. 1999 * * This controller does _not_ meet the ExCA standard. * * m8xx pcmcia controller brief info: * + 8 windows (attrib, mem, i/o) * + up to two slots (SLOT_A and SLOT_B) * + inputpins, outputpins, event and mask registers. * - no offset register. sigh. * * Because of the lacking offset register we must map the whole card. * We assign each memory window PCMCIA_MEM_WIN_SIZE address space. * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE. * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE. * They are maximum 64KByte each... */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef PCMCIA_DEBUG static int pc_debug = PCMCIA_DEBUG; MODULE_PARM(pc_debug, "i"); #define DEBUG(n, args...) printk(KERN_DEBUG "m8xx_pcmcia: " args); #else #define DEBUG(n, args...) #endif #define PCMCIA_INFO(args...) printk(KERN_INFO "m8xx_pcmcia: "args) #define PCMCIA_ERROR(args...) printk(KERN_ERR "m8xx_pcmcia: "args) static const char *version = "Version 0.03, 14-Feb-2000, Magnus Damm"; /* ------------------------------------------------------------------------- */ /* Autoconfigure boards if no settings are defined */ #if !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) /* The RPX series use SLOT_B */ #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE) #define CONFIG_PCMCIA_SLOT_B #define CONFIG_BD_IS_MHZ #endif /* The ADS board use SLOT_A */ #ifdef CONFIG_ADS #define CONFIG_PCMCIA_SLOT_A #define CONFIG_BD_IS_MHZ #endif /* The FADS series are a mess */ #ifdef CONFIG_FADS #if defined(CONFIG_MPC860T) || defined(CONFIG_MPC860) || defined(CONFIG_MPC821) #define CONFIG_PCMCIA_SLOT_A #else #define CONFIG_PCMCIA_SLOT_B #endif #endif #endif /* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */ /* ------------------------------------------------------------------------- */ #define PCMCIA_MEM_WIN_BASE 0xe0000000 /* base address for memory window 0 */ #define PCMCIA_MEM_WIN_SIZE 0x04000000 /* each memory window is 64 MByte */ #define PCMCIA_IO_WIN_BASE _IO_BASE /* base address for io window 0 */ #define PCMCIA_SCHLVL PCMCIA_INTERRUPT /* Status Change Interrupt Level */ /* ------------------------------------------------------------------------- */ #if defined(CONFIG_PCMCIA_SLOT_A) && defined(CONFIG_PCMCIA_SLOT_B) #define PCMCIA_SOCKETS_NO 2 /* We have only 8 windows, dualsocket support will be limited. */ #define PCMCIA_MEM_WIN_NO 2 #define PCMCIA_IO_WIN_NO 2 #define PCMCIA_SLOT_MSG "SLOT_A and SLOT_B" #elif defined(CONFIG_PCMCIA_SLOT_A) || defined(CONFIG_PCMCIA_SLOT_B) #define PCMCIA_SOCKETS_NO 1 #define PCMCIA_MEM_WIN_NO 5 #define PCMCIA_IO_WIN_NO 2 /* define _slot_ to be able to optimize macros */ #ifdef CONFIG_PCMCIA_SLOT_A #define _slot_ 0 #define PCMCIA_SLOT_MSG "SLOT_A" #else #define _slot_ 1 #define PCMCIA_SLOT_MSG "SLOT_B" #endif #else #error m8xx_pcmcia: Bad configuration! #endif #ifdef CONFIG_BD_IS_MHZ #define M8XX_BUSFREQ ((mpc8xx_bdinfo->bi_busfreq) * 1000000) #else #define M8XX_BUSFREQ (mpc8xx_bdinfo->bi_busfreq) #endif static int pcmcia_schlvl = PCMCIA_SCHLVL; /* ------------------------------------------------------------------------- */ #define PCMCIA_SOCKET_KEY_5V 1 #define PCMCIA_SOCKET_KEY_LV 2 /* look up table for pgcrx registers */ static u_int *m8xx_pgcrx[2] = { &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pgcra, &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pgcrb }; /* * This structure is used to address each window in the PCMCIA controller. * * Keep in mind that we assume that pcmcia_win_t[n+1] is mapped directly * after pcmcia_win_t[n]... */ typedef struct { uint br; uint or; } pcmcia_win_t; /* * For some reason the hardware guys decided to make both slots share * some registers. * * Could someone invent object oriented hardware ? * * The macros are used to get the right bit from the registers. * SLOT_A : slot = 0 * SLOT_B : slot = 1 */ #define M8XX_PCMCIA_VS1(slot) (0x80000000 >> (slot << 4)) #define M8XX_PCMCIA_VS2(slot) (0x40000000 >> (slot << 4)) #define M8XX_PCMCIA_VS_MASK(slot) (0xc0000000 >> (slot << 4)) #define M8XX_PCMCIA_VS_SHIFT(slot) (30 - (slot << 4)) #define M8XX_PCMCIA_WP(slot) (0x20000000 >> (slot << 4)) #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4)) #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4)) #define M8XX_PCMCIA_BVD2(slot) (0x04000000 >> (slot << 4)) #define M8XX_PCMCIA_BVD1(slot) (0x02000000 >> (slot << 4)) #define M8XX_PCMCIA_RDY(slot) (0x01000000 >> (slot << 4)) #define M8XX_PCMCIA_RDY_L(slot) (0x00800000 >> (slot << 4)) #define M8XX_PCMCIA_RDY_H(slot) (0x00400000 >> (slot << 4)) #define M8XX_PCMCIA_RDY_R(slot) (0x00200000 >> (slot << 4)) #define M8XX_PCMCIA_RDY_F(slot) (0x00100000 >> (slot << 4)) #define M8XX_PCMCIA_MASK(slot) (0xFFFF0000 >> (slot << 4)) #define M8XX_PGCRX(slot) (*m8xx_pgcrx[slot]) #define M8XX_PGCRX_CXOE 0x00000080 #define M8XX_PGCRX_CXRESET 0x00000040 /* we keep one lookup table per socket to check flags */ #define PCMCIA_EVENTS_MAX 5 /* 4 max at a time + termination */ typedef struct { u_int regbit; u_int eventbit; } event_table_t; typedef struct socket_info_t { void (*handler)(void *info, u_int events); void *info; u_int slot; socket_state_t state; struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO]; struct pccard_io_map io_win[PCMCIA_IO_WIN_NO]; event_table_t events[PCMCIA_EVENTS_MAX]; } socket_info_t; static socket_info_t socket[PCMCIA_SOCKETS_NO]; static socket_cap_t capabilities = { /* only 16-bit cards, memory windows must be size-aligned */ SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP, 0x200, /* SIU_LEVEL 7 -> 0 */ 0x1000, /* 4K minimum window size */ 9, 0 /* No PCI or CardBus support */ }; /* * Search this table to see if the windowsize is * supported... */ #define M8XX_SIZES_NO 32 static const u_int m8xx_size_to_gray[M8XX_SIZES_NO] = { 0x00000001, 0x00000002, 0x00000008, 0x00000004, 0x00000080, 0x00000040, 0x00000010, 0x00000020, 0x00008000, 0x00004000, 0x00001000, 0x00002000, 0x00000100, 0x00000200, 0x00000800, 0x00000400, 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x01000000, 0x02000000, 0xffffffff, 0x04000000, 0x00010000, 0x00020000, 0x00080000, 0x00040000, 0x00800000, 0x00400000, 0x00100000, 0x00200000 }; /* ------------------------------------------------------------------------- */ static void m8xx_interrupt(int irq, void *dev, struct pt_regs *regs); static int m8xx_service(u_int sock, u_int cmd, void *arg); #define PCMCIA_BMT_LIMIT (15*4) /* Bus Monitor Timeout value */ /* ------------------------------------------------------------------------- */ /* board specific stuff: */ /* voltage_set(), hardware_enable() and hardware_disable() */ /* ------------------------------------------------------------------------- */ /* RPX Boards from Embedded Planet */ #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE) /* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks. * SYPCR is write once only, therefore must the slowest memory be faster * than the bus monitor or we will get a machine check due to the bus timeout. */ #define PCMCIA_BOARD_MSG "RPX CLASSIC or RPX LITE" #undef PCMCIA_BMT_LIMIT #define PCMCIA_BMT_LIMIT (6*8) static int voltage_set(int slot, int vcc, int vpp) { u_int reg = 0; switch(vcc) { case 0: break; case 33: reg |= BCSR1_PCVCTL4; break; case 50: reg |= BCSR1_PCVCTL5; break; default: return 1; } switch(vpp) { case 0: break; case 33: case 50: if(vcc == vpp) reg |= BCSR1_PCVCTL6; else return 1; break; case 120: reg |= BCSR1_PCVCTL7; default: return 1; } if(!((vcc == 50) || (vcc == 0))) return 1; /* first, turn off all power */ *((uint *)RPX_CSR_ADDR) &= ~(BCSR1_PCVCTL4 | BCSR1_PCVCTL5 | BCSR1_PCVCTL6 | BCSR1_PCVCTL7); /* enable new powersettings */ *((uint *)RPX_CSR_ADDR) |= reg; return 0; } #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V #define hardware_enable(_slot_) /* No hardware to enable */ #define hardware_disable(_slot_) /* No hardware to disable */ #endif /* CONFIG_RPXCLASSIC */ /* ------------------------------------------------------------------------- */ /* (F)ADS Boards from Motorola */ #if defined(CONFIG_ADS) || defined(CONFIG_FADS) #ifdef CONFIG_ADS #define PCMCIA_BOARD_MSG "ADS" #define PCMCIA_GLITCHY_CD /* My ADS board needs this */ #else #define PCMCIA_BOARD_MSG "FADS" #endif static int voltage_set(int slot, int vcc, int vpp) { u_int reg = 0; switch(vpp) { case 0: reg = 0; break; case 50: reg = 1; break; case 120: reg = 2; break; default: return 1; } switch(vcc) { case 0: reg = 0; break; #ifdef CONFIG_ADS case 50: reg = BCSR1_PCCVCCON; break; #endif #ifdef CONFIG_FADS case 33: reg = BCSR1_PCCVCC0 | BCSR1_PCCVCC1; break; case 50: reg = BCSR1_PCCVCC1; break; #endif default: return 1; } /* first, turn off all power */ #ifdef CONFIG_ADS *((uint *)BCSR1) |= BCSR1_PCCVCCON; #endif #ifdef CONFIG_FADS *((uint *)BCSR1) &= ~(BCSR1_PCCVCC0 | BCSR1_PCCVCC1); #endif *((uint *)BCSR1) &= ~BCSR1_PCCVPP_MASK; /* enable new powersettings */ #ifdef CONFIG_ADS *((uint *)BCSR1) &= ~reg; #endif #ifdef CONFIG_FADS *((uint *)BCSR1) |= reg; #endif *((uint *)BCSR1) |= reg << 20; return 0; } #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V static void hardware_enable(int slot) { *((uint *)BCSR1) &= ~BCSR1_PCCEN; } static void hardware_disable(int slot) { *((uint *)BCSR1) &= ~BCSR1_PCCEN; } #endif /* ------------------------------------------------------------------------- */ static void m8xx_shutdown(void) { u_int k, m; pcmcia_win_t *w; #if (PCMCIA_SOCKETS_NO == 2) u_int _slot_; #endif w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0; for(k = 0; k < PCMCIA_SOCKETS_NO; k++) { #if (PCMCIA_SOCKETS_NO == 2) _slot_ = socket[k].slot; #endif ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr = M8XX_PCMCIA_MASK(_slot_); ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per &= ~M8XX_PCMCIA_MASK(_slot_); /* turn off interrupt and disable CxOE */ M8XX_PGCRX(_slot_) = M8XX_PGCRX_CXOE; /* turn off memory windows */ for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) { w->or = 0; /* set to not valid */ w++; } /* turn off voltage */ voltage_set(_slot_, 0, 0); /* disable external hardware */ hardware_disable(_slot_); } free_irq(pcmcia_schlvl, NULL); } /* ------------------------------------------------------------------------- */ static int __init m8xx_init(void) { servinfo_t serv; pcmcia_win_t *w; u_int k, m; #if (PCMCIA_SOCKETS_NO == 2) u_int _slot_; #endif PCMCIA_INFO("%s\n", version); CardServices(GetCardServicesInfo, &serv); if (serv.Revision != CS_RELEASE_CODE) { PCMCIA_ERROR("Card Services release does not match!\n"); return -1; } PCMCIA_INFO(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG " with IRQ %u.\n", pcmcia_schlvl); /* Configure Status change interrupt */ if(request_8xxirq(pcmcia_schlvl, m8xx_interrupt, 0, "m8xx_pcmcia", NULL)) { PCMCIA_ERROR("Cannot allocate IRQ %u for SCHLVL!\n", pcmcia_schlvl); return -1; } w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0; for(k = 0; k < PCMCIA_SOCKETS_NO; k++) { /* Setup internal hardware */ #if (PCMCIA_SOCKETS_NO == 2) _slot_ = socket[k].slot = k; #else socket[k].slot = _slot_; #endif ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr = M8XX_PCMCIA_MASK(_slot_); ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per &= ~M8XX_PCMCIA_MASK(_slot_); /* connect interrupt and disable CxOE */ M8XX_PGCRX(_slot_) = M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16); /* intialize the fixed memory windows */ for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) { w->br = PCMCIA_MEM_WIN_BASE + (PCMCIA_MEM_WIN_SIZE * (m + k * PCMCIA_MEM_WIN_NO)); w->or = 0; /* set to not valid */ DEBUG(3,"Socket %u: MemWin %u: Base 0x%08x.\n", k, m, w->br); w++; } /* turn off voltage */ voltage_set(_slot_, 0, 0); /* Enable external hardware */ hardware_enable(_slot_); } if(register_ss_entry(PCMCIA_SOCKETS_NO, &m8xx_service) != 0) { PCMCIA_ERROR("register_ss_entry() failed.\n"); m8xx_shutdown(); return -ENODEV; } return 0; } /* ------------------------------------------------------------------------- */ static void __exit m8xx_exit(void) { unregister_ss_entry(&m8xx_service); m8xx_shutdown(); } /* ------------------------------------------------------------------------- */ static void m8xx_interrupt(int irq, void *dev, struct pt_regs *regs) { socket_info_t *s; event_table_t *e; u_int events, pscr, pipr, k; #if (PCMCIA_SOCKETS_NO == 2) u_int _slot_; #endif DEBUG(3,"Interrupt!\n"); /* get interrupt sources */ pscr = ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr; pipr = ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr; s = &socket[0]; for(k = 0; k < PCMCIA_SOCKETS_NO; k++) { if(s->handler) { e = &s->events[0]; events = 0; #if (PCMCIA_SOCKETS_NO == 2) _slot_ = s->slot; #endif while(e->regbit) { if(pscr & e->regbit) events |= e->eventbit; e++; } /* * report only if both card detect signals are the same * not too nice done, * we depend on that CD2 is the bit to the left of CD1... */ if(events & SS_DETECT) if(((pipr & M8XX_PCMCIA_CD2(_slot_)) >> 1) ^ (pipr & M8XX_PCMCIA_CD1(_slot_))) events &= ~SS_DETECT; #ifdef PCMCIA_GLITCHY_CD /* * I've experienced CD problems with my ADS board. * We make an extra check to see if there was a * real change of Card detection. */ if((events & SS_DETECT) && ((pipr & (M8XX_PCMCIA_CD2(_slot_) | M8XX_PCMCIA_CD1(_slot_))) == 0) && (s->state.Vcc | s->state.Vpp)) { events &= ~SS_DETECT; printk( "CD glitch workaround - CD = 0x%08x!\n", (pipr & (M8XX_PCMCIA_CD2(_slot_) | M8XX_PCMCIA_CD1(_slot_)))); } #endif /* call the handler */ DEBUG(3,"slot %u: events = 0x%02x, pscr = 0x%08x, " "pipr = 0x%08x\n", _slot_, events, pscr, pipr); if(events) s->handler(s->info, events); } s++; } /* clear the interrupt sources */ ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr = pscr; DEBUG(3,"Interrupt done.\n"); } /* ------------------------------------------------------------------------- */ static u_int m8xx_get_graycode(u_int size) { u_int k; for(k = 0; k < M8XX_SIZES_NO; k++) if(m8xx_size_to_gray[k] == size) break; if((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1)) k = -1; return k; } /* ------------------------------------------------------------------------- */ static u_int m8xx_get_speed(u_int ns, u_int is_io) { u_int reg, clocks, psst, psl, psht; if(!ns) { /* * We get called with IO maps setup to 0ns * if not specified by the user. * They should be 255ns. */ if(is_io) ns = 255; else ns = 100; /* fast memory if 0 */ } /* * In PSST, PSL, PSHT fields we tell the controller * timing parameters in CLKOUT clock cycles. * CLKOUT is the same as GCLK2_50. */ /* how we want to adjust the timing - in percent */ #define ADJ 180 /* 80 % longer accesstime - to be sure */ clocks = ((M8XX_BUSFREQ / 1000) * ns) / 1000; clocks = (clocks * ADJ) / (100*1000); if(clocks >= PCMCIA_BMT_LIMIT) { printk( "Max access time limit reached\n"); clocks = PCMCIA_BMT_LIMIT-1; } psst = clocks / 7; /* setup time */ psht = clocks / 7; /* hold time */ psl = (clocks * 5) / 7; /* strobe length */ psst += clocks - (psst + psht + psl); reg = psst << 12; reg |= psl << 7; reg |= psht << 16; return reg; } /* ------------------------------------------------------------------------- */ static int m8xx_register_callback(u_short lsock, ss_callback_t *call) { if (call == NULL) { socket[lsock].handler = NULL; MOD_DEC_USE_COUNT; } else { MOD_INC_USE_COUNT; socket[lsock].handler = call->handler; socket[lsock].info = call->info; } return 0; } /* ------------------------------------------------------------------------- */ static int m8xx_get_status(u_short lsock, u_int *value) { socket_info_t *s = &socket[lsock]; u_int pipr, reg; #if (PCMCIA_SOCKETS_NO == 2) u_int _slot_ = s->slot; #endif pipr = ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr; *value = ((pipr & (M8XX_PCMCIA_CD1(_slot_) | M8XX_PCMCIA_CD2(_slot_))) == 0) ? SS_DETECT : 0; *value |= (pipr & M8XX_PCMCIA_WP(_slot_)) ? SS_WRPROT : 0; if (s->state.flags & SS_IOCARD) *value |= (pipr & M8XX_PCMCIA_BVD1(_slot_)) ? SS_STSCHG : 0; else { *value |= (pipr & M8XX_PCMCIA_RDY(_slot_)) ? SS_READY : 0; *value |= (pipr & M8XX_PCMCIA_BVD1(_slot_)) ? SS_BATDEAD : 0; *value |= (pipr & M8XX_PCMCIA_BVD2(_slot_)) ? SS_BATWARN : 0; } if (s->state.Vcc | s->state.Vpp) *value |= SS_POWERON; /* * Voltage detection: * This driver only supports 16-Bit pc-cards. * Cardbus is not handled here. * * To determine what voltage to use we must read the VS1 and VS2 pin. * Depending on what socket type is present, * different combinations mean different things. * * Card Key Socket Key VS1 VS2 Card Vcc for CIS parse * * 5V 5V, LV* NC NC 5V only 5V (if available) * * 5V 5V, LV* GND NC 5 or 3.3V as low as possible * * 5V 5V, LV* GND GND 5, 3.3, x.xV as low as possible * * LV* 5V - - shall not fit into socket * * LV* LV* GND NC 3.3V only 3.3V * * LV* LV* NC GND x.xV x.xV (if avail.) * * LV* LV* GND GND 3.3 or x.xV as low as possible * * *LV means Low Voltage * * * That gives us the following table: * * Socket VS1 VS2 Voltage * * 5V NC NC 5V * 5V NC GND none (should not be possible) * 5V GND NC >= 3.3V * 5V GND GND >= x.xV * * LV NC NC 5V (if available) * LV NC GND x.xV (if available) * LV GND NC 3.3V * LV GND GND >= x.xV * * So, how do I determine if I have a 5V or a LV * socket on my board? Look at the socket! * * * Socket with 5V key: * ++--------------------------------------------+ * || | * || || * || || * | | * +---------------------------------------------+ * * Socket with LV key: * ++--------------------------------------------+ * || | * | || * | || * | | * +---------------------------------------------+ * * * With other words - LV only cards does not fit * into the 5V socket! */ /* read out VS1 and VS2 */ reg = (pipr & M8XX_PCMCIA_VS_MASK(_slot_)) >> M8XX_PCMCIA_VS_SHIFT(_slot_); if(socket_get(_slot_) == PCMCIA_SOCKET_KEY_LV) { switch(reg) { case 1: *value |= SS_3VCARD; break; /* GND, NC - 3.3V only */ case 2: *value |= SS_XVCARD; break; /* NC. GND - x.xV only */ }; } DEBUG(3,"GetStatus(%d) = %#2.2x\n", lsock, *value); return 0; } /* ------------------------------------------------------------------------- */ static int m8xx_inquire_socket(u_short lsock, socket_cap_t *cap) { *cap = capabilities; return 0; } /* ------------------------------------------------------------------------- */ static int m8xx_get_socket(u_short lsock, socket_state_t *state) { *state = socket[lsock].state; /* copy the whole structure */ DEBUG(3,"GetSocket(%d) = flags %#3.3x, Vcc %d, Vpp %d, " "io_irq %d, csc_mask %#2.2x\n", lsock, state->flags, state->Vcc, state->Vpp, state->io_irq, state->csc_mask); return 0; } /* ------------------------------------------------------------------------- */ static int m8xx_set_socket(u_short lsock, socket_state_t *state) { socket_info_t *s = &socket[lsock]; event_table_t *e; u_int reg; u_long flags; #if (PCMCIA_SOCKETS_NO == 2) u_int _slot_ = s->slot; #endif DEBUG(3, "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, " "io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags, state->Vcc, state->Vpp, state->io_irq, state->csc_mask); /* First, set voltage - bail out if invalid */ if(voltage_set(_slot_, state->Vcc, state->Vpp)) return -EINVAL; /* Take care of reset... */ if(state->flags & SS_RESET) M8XX_PGCRX(_slot_) |= M8XX_PGCRX_CXRESET; /* active high */ else M8XX_PGCRX(_slot_) &= ~M8XX_PGCRX_CXRESET; /* ... and output enable. */ /* The CxOE signal is connected to a 74541 on the ADS. I guess most other boards used the ADS as a reference. I tried to control the CxOE signal with SS_OUTPUT_ENA, but the reset signal seems connected via the 541. If the CxOE is left high are some signals tristated and no pullups are present -> the cards act wierd. So right now the buffers are enabled if the power is on. */ if(state->Vcc || state->Vpp) M8XX_PGCRX(_slot_) &= ~M8XX_PGCRX_CXOE; /* active low */ else M8XX_PGCRX(_slot_) |= M8XX_PGCRX_CXOE; /* * We'd better turn off interrupts before * we mess with the events-table.. */ save_flags(flags); cli(); /* * Play around with the interrupt mask to be able to * give the events the generic pcmcia driver wants us to. */ e = &s->events[0]; reg = 0; if(state->csc_mask & SS_DETECT) { e->eventbit = SS_DETECT; reg |= e->regbit = (M8XX_PCMCIA_CD2(_slot_) | M8XX_PCMCIA_CD1(_slot_)); e++; } if(state->flags & SS_IOCARD) { /* * I/O card */ if(state->csc_mask & SS_STSCHG) { e->eventbit = SS_STSCHG; reg |= e->regbit = M8XX_PCMCIA_BVD1(_slot_); e++; } /* * If io_irq is non-zero we should enable irq. */ if(state->io_irq) { M8XX_PGCRX(_slot_) |= mk_int_int_mask(state->io_irq) << 24; /* * Strange thing here: * The manual does not tell us which interrupt * the sources generate. * Anyhow, I found out that RDY_L generates IREQLVL. * * We use level triggerd interrupts, and they don't * have to be cleared in PSCR in the interrupt handler. */ reg |= M8XX_PCMCIA_RDY_L(_slot_); } else M8XX_PGCRX(_slot_) &= 0x00ffffff; #if 0 if(state->flags & SS_SPKR_ENA) enablespeaker(); else disablespeaker(); if(state->flags & SS_DMA_MODE) enabledma(); else disabledma(); #endif } else { /* * Memory card */ if(state->csc_mask & SS_BATDEAD) { e->eventbit = SS_BATDEAD; reg |= e->regbit = M8XX_PCMCIA_BVD1(_slot_); e++; } if(state->csc_mask & SS_BATWARN) { e->eventbit = SS_BATWARN; reg |= e->regbit = M8XX_PCMCIA_BVD2(_slot_); e++; } /* What should I trigger on - low/high,raise,fall? */ if(state->csc_mask & SS_READY) { e->eventbit = SS_READY; reg |= e->regbit = 0; //?? e++; } } e->regbit = 0; /* terminate list */ /* * Clear the status changed . * Port A and Port B share the same port. * Writing ones will clear the bits. */ ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr = reg; /* * Write the mask. * Port A and Port B share the same port. * Need for read-modify-write. * Ones will enable the interrupt. */ reg |= ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per & M8XX_PCMCIA_MASK(_slot_); ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per = reg; restore_flags(flags); /* copy the struct and modify the copy */ s->state = *state; return 0; } /* ------------------------------------------------------------------------- */ static int m8xx_get_io_map(u_short lsock, struct pccard_io_map *io) { if(io->map >= PCMCIA_IO_WIN_NO) return -EINVAL; *io = socket[lsock].io_win[io->map]; /* copy the struct */ DEBUG(3,"GetIOMap(%d, %d) = %#2.2x, %d ns, " "%#4.4x-%#4.4x\n", lsock, io->map, io->flags, io->speed, io->start, io->stop); return 0; } /* ------------------------------------------------------------------------- */ static int m8xx_set_io_map(u_short lsock, struct pccard_io_map *io) { socket_info_t *s = &socket[lsock]; pcmcia_win_t *w; u_int reg, winnr; #if (PCMCIA_SOCKETS_NO == 2) u_int _slot_ = s->slot; #endif #if 1 #define M8XX_SIZE (io->stop - io->start + 1) #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start) #else /* only for testing */ #define M8XX_SIZE 0x400 // 0x10000 #define M8XX_BASE PCMCIA_IO_WIN_BASE #endif DEBUG(3, "SetIOMap(%d, %d, %#2.2x, %d ns, " "%#4.4x-%#4.4x)\n", lsock, io->map, io->flags, io->speed, io->start, io->stop); if ((io->map >= PCMCIA_IO_WIN_NO) || (io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)) return -EINVAL; if((reg = m8xx_get_graycode(M8XX_SIZE)) == -1) return -EINVAL; if(io->flags & MAP_ACTIVE) { winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO) + (lsock * PCMCIA_IO_WIN_NO) + io->map; /* setup registers */ w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0; w += winnr; w->or = 0; /* turn off window first */ w->br = M8XX_BASE; reg <<= 27; reg |= 0x00018 + (_slot_ << 2); reg |= m8xx_get_speed(io->speed, 1); if(io->flags & MAP_WRPROT) reg |= 0x00000002; if(io->flags & (MAP_16BIT | MAP_AUTOSZ)) reg |= 0x00000040; if(io->flags & MAP_ACTIVE) reg |= 0x00000001; w->or = reg; DEBUG(3,"Socket %u: Mapped io window %u at %#8.8x, " "OR = %#8.8x.\n", lsock, io->map, w->br, w->or); #if 0 if(0) { u_int k; printk("dumping map from 0x%02x\n", M8XX_BASE); for(k = M8XX_BASE; k < (M8XX_BASE+M8XX_SIZE); k++) { if(!(k & 0x0f)) printk("0x%04x: ", k); printk("%02x ", *((char *) k)); if((k & 0x0f) == 0x0f) printk("\n"); } printk("\n"); } #endif } /* copy the struct and modify the copy */ s->io_win[io->map] = *io; s->io_win[io->map].flags &= (MAP_WRPROT | MAP_16BIT | MAP_ACTIVE); return 0; } /* ------------------------------------------------------------------------- */ static int m8xx_get_mem_map(u_short lsock, struct pccard_mem_map *mem) { if(mem->map >= PCMCIA_MEM_WIN_NO) return -EINVAL; *mem = socket[lsock].mem_win[mem->map]; /* copy the struct */ DEBUG(3, "GetMemMap(%d, %d) = %#2.2x, %d ns, " "%#5.5lx-%#5.5lx, %#5.5x\n", lsock, mem->map, mem->flags, mem->speed, mem->sys_start, mem->sys_stop, mem->card_start); return 0; } /* ------------------------------------------------------------------------- */ static int m8xx_set_mem_map(u_short lsock, struct pccard_mem_map *mem) { socket_info_t *s = &socket[lsock]; pcmcia_win_t *w; struct pccard_mem_map *old; u_int reg, winnr; #if (PCMCIA_SOCKETS_NO == 2) u_int _slot_ = s->slot; #endif DEBUG(3, "SetMemMap(%d, %d, %#2.2x, %d ns, " "%#5.5lx-%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags, mem->speed, mem->sys_start, mem->sys_stop, mem->card_start); if ((mem->map >= PCMCIA_MEM_WIN_NO) || (mem->sys_start > mem->sys_stop) || ((mem->sys_stop - mem->sys_start) >= PCMCIA_MEM_WIN_SIZE) || (mem->card_start >= 0x04000000) || (mem->sys_start & 0xfff) /* 4KByte resolution */ || (mem->card_start & 0xfff)) return -EINVAL; if((reg = m8xx_get_graycode(PCMCIA_MEM_WIN_SIZE)) == -1) { printk( "Cannot set size to 0x%08x.\n", PCMCIA_MEM_WIN_SIZE); return -EINVAL; } winnr = (lsock * PCMCIA_MEM_WIN_NO) + mem->map; /* Setup the window in the pcmcia controller */ w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0; w += winnr; reg <<= 27; reg |= _slot_ << 2; reg |= m8xx_get_speed(mem->speed, 0); if(mem->flags & MAP_ATTRIB) reg |= 0x00000010; if(mem->flags & MAP_WRPROT) reg |= 0x00000002; if(mem->flags & MAP_16BIT) reg |= 0x00000040; if(mem->flags & MAP_ACTIVE) reg |= 0x00000001; w->or = reg; DEBUG(3, "Socket %u: Mapped memory window %u at %#8.8x, " "OR = %#8.8x.\n", lsock, mem->map, w->br, w->or); if(mem->flags & MAP_ACTIVE) { mem->sys_stop -= mem->sys_start; /* get the new base address */ mem->sys_start = PCMCIA_MEM_WIN_BASE + (PCMCIA_MEM_WIN_SIZE * winnr) + mem->card_start; mem->sys_stop += mem->sys_start; } DEBUG(3, "SetMemMap(%d, %d, %#2.2x, %d ns, " "%#5.5lx-%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags, mem->speed, mem->sys_start, mem->sys_stop, mem->card_start); /* copy the struct and modify the copy */ old = &s->mem_win[mem->map]; *old = *mem; old->flags &= (MAP_ATTRIB | MAP_WRPROT | MAP_16BIT | MAP_ACTIVE); return 0; } /* ------------------------------------------------------------------------- */ static void *m8xx_services[] = { &m8xx_register_callback, &m8xx_inquire_socket, &m8xx_get_status, &m8xx_get_socket, &m8xx_set_socket, &m8xx_get_io_map, &m8xx_set_io_map, &m8xx_get_mem_map, &m8xx_set_mem_map, }; #define NFUNC (sizeof(m8xx_services)/sizeof(void *)) static int m8xx_service(u_int lsock, u_int cmd, void *arg) { DEBUG(3, "Service(%d, %d, 0x%p)\n", lsock, cmd, arg); if(cmd < NFUNC) return ((int (*)(u_short, void *))m8xx_services[cmd])(lsock, arg); return -EINVAL; } /* ------------------------------------------------------------------------- */ module_init(m8xx_init); module_exit(m8xx_exit);