/* * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series. * * (C) 1999-2000 Magnus Damm * (C) 2001-2002 Montavista Software, Inc. * * * Support for two slots by Cyclades Corporation * * Further fixes, v2.6 kernel port * * * Some fixes, additions (C) 2005 Montavista Software, Inc. * * * "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 #include #ifdef PCMCIA_DEBUG static int pc_debug = PCMCIA_DEBUG; module_param(pc_debug, int, 0); #define dprintk(args...) printk(KERN_DEBUG "m8xx_pcmcia: " args); #else #define dprintk(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 0.06, Aug 2005"; MODULE_LICENSE("Dual MPL/GPL"); #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 #if defined(CONFIG_MPC885ADS) #define CONFIG_PCMCIA_SLOT_A #define PCMCIA_GLITCHY_CD #endif /* Cyclades ACS uses both slots */ #ifdef CONFIG_PRxK #define CONFIG_PCMCIA_SLOT_A #define CONFIG_PCMCIA_SLOT_B #endif #endif /* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */ #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 /* full support for one slot */ #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 /* ------------------------------------------------------------------------- */ #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 */ /* ------------------------------------------------------------------------- */ /* 2.4.x and newer has this always in HZ */ #define M8XX_BUSFREQ ((((bd_t *)&(__res))->bi_busfreq)) static int pcmcia_schlvl = PCMCIA_SCHLVL; static spinlock_t events_lock = SPIN_LOCK_UNLOCKED; #define PCMCIA_SOCKET_KEY_5V 1 #define PCMCIA_SOCKET_KEY_LV 2 /* look up table for pgcrx registers */ static u32 *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[n+1] is mapped directly * after pcmcia_win[n]... */ struct pcmcia_win { u32 br; u32 or; }; /* * 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_PCMCIA_POR_VALID 0x00000001 #define M8XX_PCMCIA_POR_WRPROT 0x00000002 #define M8XX_PCMCIA_POR_ATTRMEM 0x00000010 #define M8XX_PCMCIA_POR_IO 0x00000018 #define M8XX_PCMCIA_POR_16BIT 0x00000040 #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 */ struct event_table { u32 regbit; u32 eventbit; }; struct socket_info { void (*handler)(void *info, u32 events); void *info; u32 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]; struct event_table events[PCMCIA_EVENTS_MAX]; struct pcmcia_socket socket; }; static struct socket_info socket[PCMCIA_SOCKETS_NO]; /* * Search this table to see if the windowsize is * supported... */ #define M8XX_SIZES_NO 32 static const u32 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 irqreturn_t m8xx_interrupt(int irq, void *dev, struct pt_regs *regs); #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) { u32 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 */ out_be32(((u32 *)RPX_CSR_ADDR), in_be32(((u32 *)RPX_CSR_ADDR)) & ~(BCSR1_PCVCTL4 | BCSR1_PCVCTL5 | BCSR1_PCVCTL6 | BCSR1_PCVCTL7)); /* enable new powersettings */ out_be32(((u32 *)RPX_CSR_ADDR), in_be32(((u32 *)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 */ /* FADS Boards from Motorola */ #if defined(CONFIG_FADS) #define PCMCIA_BOARD_MSG "FADS" static int voltage_set(int slot, int vcc, int vpp) { u32 reg = 0; switch(vcc) { case 0: break; case 33: reg |= BCSR1_PCCVCC0; break; case 50: reg |= BCSR1_PCCVCC1; break; default: return 1; } switch(vpp) { case 0: break; case 33: case 50: if(vcc == vpp) reg |= BCSR1_PCCVPP1; else return 1; break; case 120: if ((vcc == 33) || (vcc == 50)) reg |= BCSR1_PCCVPP0; else return 1; default: return 1; } /* first, turn off all power */ out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) & ~(BCSR1_PCCVCC_MASK | BCSR1_PCCVPP_MASK)); /* enable new powersettings */ out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) | reg); return 0; } #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V static void hardware_enable(int slot) { out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) & ~BCSR1_PCCEN); } static void hardware_disable(int slot) { out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) | BCSR1_PCCEN); } #endif /* MPC885ADS Boards */ #if defined(CONFIG_MPC885ADS) #define PCMCIA_BOARD_MSG "MPC885ADS" static int voltage_set(int slot, int vcc, int vpp) { u32 reg = 0; unsigned *bcsr_io; bcsr_io = ioremap(BCSR1, sizeof(unsigned long)); switch(vcc) { case 0: break; case 33: reg |= BCSR1_PCCVCC0; break; case 50: reg |= BCSR1_PCCVCC1; break; default: return 1; } switch(vpp) { case 0: break; case 33: case 50: if(vcc == vpp) reg |= BCSR1_PCCVPP1; else return 1; break; case 120: if ((vcc == 33) || (vcc == 50)) reg |= BCSR1_PCCVPP0; else return 1; default: return 1; } /* first, turn off all power */ out_be32(bcsr_io, in_be32(bcsr_io) & ~(BCSR1_PCCVCC_MASK | BCSR1_PCCVPP_MASK)); /* enable new powersettings */ out_be32(bcsr_io, in_be32(bcsr_io) | reg); iounmap(bcsr_io); return 0; } #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V static void hardware_enable(int slot) { unsigned *bcsr_io; bcsr_io = ioremap(BCSR1, sizeof(unsigned long)); out_be32(bcsr_io, in_be32(bcsr_io) & ~BCSR1_PCCEN); iounmap(bcsr_io); } static void hardware_disable(int slot) { unsigned *bcsr_io; bcsr_io = ioremap(BCSR1, sizeof(unsigned long)); out_be32(bcsr_io, in_be32(bcsr_io) | BCSR1_PCCEN); iounmap(bcsr_io); } #endif /* ------------------------------------------------------------------------- */ /* Motorola MBX860 */ #if defined(CONFIG_MBX) #define PCMCIA_BOARD_MSG "MBX" static int voltage_set(int slot, int vcc, int vpp) { u8 reg = 0; switch(vcc) { case 0: break; case 33: reg |= CSR2_VCC_33; break; case 50: reg |= CSR2_VCC_50; break; default: return 1; } switch(vpp) { case 0: break; case 33: case 50: if(vcc == vpp) reg |= CSR2_VPP_VCC; else return 1; break; case 120: if ((vcc == 33) || (vcc == 50)) reg |= CSR2_VPP_12; else return 1; default: return 1; } /* first, turn off all power */ out_8((u8 *)MBX_CSR2_ADDR, in_8((u8 *)MBX_CSR2_ADDR) & ~(CSR2_VCC_MASK | CSR2_VPP_MASK)); /* enable new powersettings */ out_8((u8 *)MBX_CSR2_ADDR, in_8((u8 *)MBX_CSR2_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_MBX */ #if defined(CONFIG_PRxK) #include extern volatile fpga_pc_regs *fpga_pc; #define PCMCIA_BOARD_MSG "MPC855T" static int voltage_set(int slot, int vcc, int vpp) { u8 reg = 0; u8 regread; cpld_regs *ccpld = get_cpld(); switch(vcc) { case 0: break; case 33: reg |= PCMCIA_VCC_33; break; case 50: reg |= PCMCIA_VCC_50; break; default: return 1; } switch(vpp) { case 0: break; case 33: case 50: if(vcc == vpp) reg |= PCMCIA_VPP_VCC; else return 1; break; case 120: if ((vcc == 33) || (vcc == 50)) reg |= PCMCIA_VPP_12; else return 1; default: return 1; } reg = reg >> (slot << 2); regread = in_8(&ccpld->fpga_pc_ctl); if (reg != (regread & ((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)))) { /* enable new powersettings */ regread = regread & ~((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)); out_8(&ccpld->fpga_pc_ctl, reg | regread); msleep(100); } return 0; } #define socket_get(_slot_) PCMCIA_SOCKET_KEY_LV #define hardware_enable(_slot_) /* No hardware to enable */ #define hardware_disable(_slot_) /* No hardware to disable */ #endif /* CONFIG_PRxK */ static void m8xx_shutdown(void) { u32 m, i; struct pcmcia_win *w; for(i = 0; i < PCMCIA_SOCKETS_NO; i++){ w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0; out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, M8XX_PCMCIA_MASK(i)); out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) & ~M8XX_PCMCIA_MASK(i)); /* turn off interrupt and disable CxOE */ out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE); /* turn off memory windows */ for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) { out_be32(&w->or, 0); /* set to not valid */ w++; } /* turn off voltage */ voltage_set(i, 0, 0); /* disable external hardware */ hardware_disable(i); } free_irq(pcmcia_schlvl, NULL); } static struct device_driver m8xx_driver = { .name = "m8xx-pcmcia", .bus = &platform_bus_type, .suspend = pcmcia_socket_dev_suspend, .resume = pcmcia_socket_dev_resume, }; static struct platform_device m8xx_device = { .name = "m8xx-pcmcia", .id = 0, }; static u32 pending_events[PCMCIA_SOCKETS_NO]; static spinlock_t pending_event_lock = SPIN_LOCK_UNLOCKED; static irqreturn_t m8xx_interrupt(int irq, void *dev, struct pt_regs *regs) { struct socket_info *s; struct event_table *e; unsigned int i, events, pscr, pipr, per; dprintk("Interrupt!\n"); /* get interrupt sources */ pscr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr); pipr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr); per = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per); for(i = 0; i < PCMCIA_SOCKETS_NO; i++) { s = &socket[i]; e = &s->events[0]; events = 0; 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(i)) >> 1) ^ (pipr & M8XX_PCMCIA_CD1(i))) { 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(i) | M8XX_PCMCIA_CD1(i))) == 0) && (s->state.Vcc | s->state.Vpp)) { events &= ~SS_DETECT; /*printk( "CD glitch workaround - CD = 0x%08x!\n", (pipr & (M8XX_PCMCIA_CD2(i) | M8XX_PCMCIA_CD1(i))));*/ } #endif /* call the handler */ dprintk("slot %u: events = 0x%02x, pscr = 0x%08x, " "pipr = 0x%08x\n", i, events, pscr, pipr); if(events) { spin_lock(&pending_event_lock); pending_events[i] |= events; spin_unlock(&pending_event_lock); /* * Turn off RDY_L bits in the PER mask on * CD interrupt receival. * * They can generate bad interrupts on the * ACS4,8,16,32. - marcelo */ per &= ~M8XX_PCMCIA_RDY_L(0); per &= ~M8XX_PCMCIA_RDY_L(1); out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, per); if (events) pcmcia_parse_events(&socket[i].socket, events); } } /* clear the interrupt sources */ out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, pscr); dprintk("Interrupt done.\n"); return IRQ_HANDLED; } static u32 m8xx_get_graycode(u32 size) { u32 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 u32 m8xx_get_speed(u32 ns, u32 is_io) { u32 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_get_status(struct pcmcia_socket *sock, unsigned int *value) { int lsock = container_of(sock, struct socket_info, socket)->slot; struct socket_info *s = &socket[lsock]; unsigned int pipr, reg; pipr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr); *value = ((pipr & (M8XX_PCMCIA_CD1(lsock) | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0; *value |= (pipr & M8XX_PCMCIA_WP(lsock)) ? SS_WRPROT : 0; if (s->state.flags & SS_IOCARD) *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_STSCHG : 0; else { *value |= (pipr & M8XX_PCMCIA_RDY(lsock)) ? SS_READY : 0; *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_BATDEAD : 0; *value |= (pipr & M8XX_PCMCIA_BVD2(lsock)) ? 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(lsock)) >> M8XX_PCMCIA_VS_SHIFT(lsock); if(socket_get(lsock) == 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 */ }; } dprintk("GetStatus(%d) = %#2.2x\n", lsock, *value); return 0; } static int m8xx_set_socket(struct pcmcia_socket *sock, socket_state_t *state) { int lsock = container_of(sock, struct socket_info, socket)->slot; struct socket_info *s = &socket[lsock]; struct event_table *e; unsigned int reg; unsigned long flags; dprintk( "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(lsock, state->Vcc, state->Vpp)) return -EINVAL; /* Take care of reset... */ if(state->flags & SS_RESET) out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXRESET); /* active high */ else out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~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) out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXOE); /* active low */ else out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXOE); /* * We'd better turn off interrupts before * we mess with the events-table.. */ spin_lock_irqsave(&events_lock, flags); /* * 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(lsock) | M8XX_PCMCIA_CD1(lsock)); 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(lsock); e++; } /* * If io_irq is non-zero we should enable irq. */ if(state->io_irq) { out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | 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(lsock); } else out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & 0x00ffffff); } else { /* * Memory card */ if(state->csc_mask & SS_BATDEAD) { e->eventbit = SS_BATDEAD; reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock); e++; } if(state->csc_mask & SS_BATWARN) { e->eventbit = SS_BATWARN; reg |= e->regbit = M8XX_PCMCIA_BVD2(lsock); 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. */ out_be32(&((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(lsock); */ reg |= in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) & (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1)); out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, reg); spin_unlock_irqrestore(&events_lock, flags); /* copy the struct and modify the copy */ s->state = *state; return 0; } static int m8xx_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) { int lsock = container_of(sock, struct socket_info, socket)->slot; struct socket_info *s = &socket[lsock]; struct pcmcia_win *w; unsigned int reg, winnr; #define M8XX_SIZE (io->stop - io->start + 1) #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start) dprintk( "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) { dprintk( "io->flags & MAP_ACTIVE\n"); 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; out_be32(&w->or, 0); /* turn off window first */ out_be32(&w->br, M8XX_BASE); reg <<= 27; reg |= M8XX_PCMCIA_POR_IO |(lsock << 2); reg |= m8xx_get_speed(io->speed, 1); if(io->flags & MAP_WRPROT) reg |= M8XX_PCMCIA_POR_WRPROT; if(io->flags & (MAP_16BIT | MAP_AUTOSZ)) reg |= M8XX_PCMCIA_POR_16BIT; if(io->flags & MAP_ACTIVE) reg |= M8XX_PCMCIA_POR_VALID; out_be32(&w->or, reg); dprintk("Socket %u: Mapped io window %u at %#8.8x, " "OR = %#8.8x.\n", lsock, io->map, w->br, w->or); } else { /* shutdown IO window */ 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; out_be32(&w->or, 0); /* turn off window */ out_be32(&w->br, 0); /* turn off base address */ dprintk("Socket %u: Unmapped io window %u at %#8.8x, " "OR = %#8.8x.\n", lsock, io->map, w->br, w->or); } /* 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); dprintk("SetIOMap exit\n"); return 0; } static int m8xx_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) { int lsock = container_of(sock, struct socket_info, socket)->slot; struct socket_info *s = &socket[lsock]; struct pcmcia_win *w; struct pccard_mem_map *old; unsigned int reg, winnr; dprintk( "SetMemMap(%d, %d, %#2.2x, %d ns, " "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags, mem->speed, mem->static_start, mem->card_start); if ((mem->map >= PCMCIA_MEM_WIN_NO) // || ((mem->s) >= PCMCIA_MEM_WIN_SIZE) || (mem->card_start >= 0x04000000) || (mem->static_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; } reg <<= 27; 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 |= lsock << 2; reg |= m8xx_get_speed(mem->speed, 0); if(mem->flags & MAP_ATTRIB) reg |= M8XX_PCMCIA_POR_ATTRMEM; if(mem->flags & MAP_WRPROT) reg |= M8XX_PCMCIA_POR_WRPROT; if(mem->flags & MAP_16BIT) reg |= M8XX_PCMCIA_POR_16BIT; if(mem->flags & MAP_ACTIVE) reg |= M8XX_PCMCIA_POR_VALID; out_be32(&w->or, reg); dprintk("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) { /* get the new base address */ mem->static_start = PCMCIA_MEM_WIN_BASE + (PCMCIA_MEM_WIN_SIZE * winnr) + mem->card_start; } dprintk("SetMemMap(%d, %d, %#2.2x, %d ns, " "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags, mem->speed, mem->static_start, 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 int m8xx_sock_init(struct pcmcia_socket *sock) { int i; pccard_io_map io = { 0, 0, 0, 0, 1 }; pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 }; dprintk( "sock_init(%d)\n", s); m8xx_set_socket(sock, &dead_socket); for (i = 0; i < PCMCIA_IO_WIN_NO; i++) { io.map = i; m8xx_set_io_map(sock, &io); } for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) { mem.map = i; m8xx_set_mem_map(sock, &mem); } return 0; } static int m8xx_suspend(struct pcmcia_socket *sock) { return m8xx_set_socket(sock, &dead_socket); } static struct pccard_operations m8xx_services = { .init = m8xx_sock_init, .suspend = m8xx_suspend, .get_status = m8xx_get_status, .set_socket = m8xx_set_socket, .set_io_map = m8xx_set_io_map, .set_mem_map = m8xx_set_mem_map, }; static int __init m8xx_init(void) { struct pcmcia_win *w; unsigned int i,m; pcmcia_info("%s\n", version); if (driver_register(&m8xx_driver)) return -1; pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG " with IRQ %u.\n", pcmcia_schlvl); /* Configure Status change interrupt */ if(request_irq(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; out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1)); out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) & ~(M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1))); /* connect interrupt and disable CxOE */ out_be32(M8XX_PGCRX(0), M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16)); out_be32(M8XX_PGCRX(1), M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16)); /* intialize the fixed memory windows */ for(i = 0; i < PCMCIA_SOCKETS_NO; i++){ for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) { out_be32(&w->br, PCMCIA_MEM_WIN_BASE + (PCMCIA_MEM_WIN_SIZE * (m + i * PCMCIA_MEM_WIN_NO))); out_be32(&w->or, 0); /* set to not valid */ w++; } } /* turn off voltage */ voltage_set(0, 0, 0); voltage_set(1, 0, 0); /* Enable external hardware */ hardware_enable(0); hardware_enable(1); platform_device_register(&m8xx_device); for (i = 0 ; i < PCMCIA_SOCKETS_NO; i++) { socket[i].slot = i; socket[i].socket.owner = THIS_MODULE; socket[i].socket.features = SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP; socket[i].socket.irq_mask = 0x000; socket[i].socket.map_size = 0x1000; socket[i].socket.io_offset = 0; socket[i].socket.pci_irq = i ? 7 : 9; socket[i].socket.ops = &m8xx_services; socket[i].socket.resource_ops = &pccard_iodyn_ops; socket[i].socket.cb_dev = NULL; socket[i].socket.dev.dev = &m8xx_device.dev; } for (i = 0; i < PCMCIA_SOCKETS_NO; i++) pcmcia_register_socket(&socket[i].socket); return 0; } static void __exit m8xx_exit(void) { int i; for (i = 0; i < PCMCIA_SOCKETS_NO; i++) pcmcia_unregister_socket(&socket[i].socket); m8xx_shutdown(); platform_device_unregister(&m8xx_device); driver_unregister(&m8xx_driver); } module_init(m8xx_init); module_exit(m8xx_exit);