* Re: I need help getting pcmcia working with a FADS board
2002-04-23 1:34 ` I need help getting pcmcia working with a FADS board Jacky Wang
@ 2002-04-23 6:26 ` Sven Boehringer
2002-04-23 7:54 ` Jacky Wang
2002-04-24 10:51 ` Jacky Wang
0 siblings, 2 replies; 4+ messages in thread
From: Sven Boehringer @ 2002-04-23 6:26 UTC (permalink / raw)
To: Jacky Wang; +Cc: May Ling List
[-- Attachment #1: Type: text/plain, Size: 344 bytes --]
Hi Jacky,
Matthew provided me with a patch for getting the pcmcia working.
I still have not enough time to test that patch. Here it goes:
Regards,
Sven
Jacky Wang wrote:
>
> Hi everyone,
>
> I need help getting pcmcia working with a FADS board.
>
> Did someone finish the driver?
> If Yes, would you mind to share it with me?
>
> Jacky
>
[-- Attachment #2: m8xx_pcmcia_kernel-2.4.19pre6.patch --]
[-- Type: text/plain, Size: 32875 bytes --]
diff -Naur linuxppc_2_4_devel.org/drivers/pcmcia/Config.in linuxppc_2_4_devel/drivers/pcmcia/Config.in
--- linuxppc_2_4_devel.org/drivers/pcmcia/Config.in Thu Apr 11 17:01:24 2002
+++ linuxppc_2_4_devel/drivers/pcmcia/Config.in Tue Apr 16 10:41:00 2002
@@ -25,5 +25,6 @@
fi
fi
dep_tristate ' SA1100 support' CONFIG_PCMCIA_SA1100 $CONFIG_ARCH_SA1100 $CONFIG_PCMCIA
+dep_tristate ' m8xx support' CONFIG_PCMCIA_M8XX $CONFIG_8xx $CONFIG_PCMCIA
endmenu
diff -Naur linuxppc_2_4_devel.org/drivers/pcmcia/Makefile linuxppc_2_4_devel/drivers/pcmcia/Makefile
--- linuxppc_2_4_devel.org/drivers/pcmcia/Makefile Thu Apr 11 17:02:28 2002
+++ linuxppc_2_4_devel/drivers/pcmcia/Makefile Tue Apr 16 10:38:58 2002
@@ -60,6 +60,7 @@
endif
obj-$(CONFIG_PCMCIA_SA1100) += sa1100_cs.o
+obj-$)CONFIG_PCMCIA_M8XX) += m8xx_pcmcia.o
sa1100_cs-objs-y := sa1100_generic.o
sa1100_cs-objs-$(CONFIG_SA1100_ADSBITSY) += sa1100_adsbitsy.o sa1111_generic.o
diff -Naur linuxppc_2_4_devel.org/drivers/pcmcia/m8xx_pcmcia.c linuxppc_2_4_devel/drivers/pcmcia/m8xx_pcmcia.c
--- linuxppc_2_4_devel.org/drivers/pcmcia/m8xx_pcmcia.c Wed Dec 31 16:00:00 1969
+++ linuxppc_2_4_devel/drivers/pcmcia/m8xx_pcmcia.c Tue Apr 16 10:36:50 2002
@@ -0,0 +1,1236 @@
+/*
+ * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
+ *
+ * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
+ * (C) 2001-2002 Montavista Software, Inc.
+ * <mlocke@mvista.com>
+ *
+ * "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 <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/string.h>
+
+#include <asm/io.h>
+#include <asm/bitops.h>
+#include <asm/segment.h>
+#include <asm/system.h>
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+
+#include <asm/mpc8xx.h>
+#include <asm/8xx_immap.h>
+#include <asm/irq.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/ss.h>
+
+#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 0.05, 14-Apr-2002";
+MODULE_LICENSE("Dual MPL/GPL");
+
+/* The RPX series use SLOT_B */
+
+#if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
+#define CONFIG_PCMCIA_SLOT_B
+#endif
+
+/* The MBX board use SLOT_A */
+
+#ifdef CONFIG_MBX
+#define CONFIG_PCMCIA_SLOT_A
+#endif
+
+/* The FADS860T board use SLOT_A */
+
+#ifdef CONFIG_FADS
+#define CONFIG_PCMCIA_SLOT_A
+#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 */
+
+/* ------------------------------------------------------------------------- */
+
+#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
+
+#define M8XX_BUSFREQ ((((bd_t *)&(__res))->bi_busfreq))
+
+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 = {
+ SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP, /* features -
+ only 16-bit cards,
+ memory windows must be
+ size-aligned */
+ 0x000, /* irq_mask - SIU_LEVEL 7 -> 0 */
+ 0x1000, /* map_size - 4K minimum window size */
+ 0, /* io_offset - */
+ 9, /* pci_irq */
+ 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);
+
+#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 */
+
+/* ------------------------------------------------------------------------- */
+/* FADS Boards from Motorola */
+
+#if defined(CONFIG_FADS)
+
+#define PCMCIA_BOARD_MSG "FADS"
+
+static int voltage_set(int slot, int vcc, int vpp)
+{
+ uint 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 */
+ *((uint *)BCSR1) &= ~(BCSR1_PCCVCC_MASK | BCSR1_PCCVPP_MASK);
+
+ /* enable new powersettings */
+ *((uint *)BCSR1) |= reg;
+
+ 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
+
+/* ------------------------------------------------------------------------- */
+/* Motorola MBX860 */
+
+#if defined(CONFIG_MBX)
+
+#define PCMCIA_BOARD_MSG "MBX"
+
+static int voltage_set(int slot, int vcc, int vpp)
+{
+ unsigned char 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 */
+ *((unsigned char *)MBX_CSR2_ADDR) &= ~(CSR2_VCC_MASK | CSR2_VPP_MASK);
+
+ /* enable new powersettings */
+ *((unsigned char *)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 */
+
+/* ------------------------------------------------------------------------- */
+
+static void m8xx_shutdown(void)
+{
+ u_int m;
+ pcmcia_win_t *w;
+
+
+ w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
+
+
+ ((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 u_int pending_events[PCMCIA_SOCKETS_NO];
+static spinlock_t pending_event_lock = SPIN_LOCK_UNLOCKED;
+
+static void m8xx_pcmcia_bh(void *dummy)
+{
+ u_int events;
+ int i;
+
+ for (i=0; i < PCMCIA_SOCKETS_NO; i++) {
+ spin_lock_irq(&pending_event_lock);
+ events = pending_events[i];
+ pending_events[i] = 0;
+ spin_unlock_irq(&pending_event_lock);
+ /*
+ SS_DETECT events need a small delay here. The reason for this is that
+ the "is there a card" electronics need time to see the card after the
+ "we have a card coming in" electronics have seen it.
+ */
+ if (events & SS_DETECT)
+ mdelay(4);
+ if (socket[i].handler)
+ socket[i].handler(socket[i].info, events);
+ }
+}
+
+static struct tq_struct m8xx_pcmcia_task = {
+ routine: m8xx_pcmcia_bh
+};
+
+
+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;
+
+ 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];
+
+ if(s->handler) {
+
+ 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(_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) {
+ spin_lock(&pending_event_lock);
+ pending_events[0] |= events;
+ spin_unlock(&pending_event_lock);
+ schedule_task(&m8xx_pcmcia_task);
+ }
+
+ }
+
+
+ /* 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(unsigned int sock, void (*handler)(void *, unsigned int), void * info)
+{
+ socket[sock].handler = handler;
+ socket[sock].info = info;
+ if (handler == NULL) {
+ MOD_DEC_USE_COUNT;
+ }
+ else {
+ MOD_INC_USE_COUNT;
+ }
+ return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int m8xx_get_status(unsigned int lsock, u_int *value)
+{
+ socket_info_t *s = &socket[lsock];
+ u_int pipr, reg;
+
+
+ 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(unsigned int lsock, socket_cap_t *cap)
+{
+ *cap = capabilities;
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int m8xx_get_socket(unsigned int 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(unsigned int lsock, socket_state_t *state)
+{
+ socket_info_t *s = &socket[lsock];
+ event_table_t *e;
+ u_int reg;
+ u_long flags;
+
+ 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;
+
+ }
+ 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(unsigned int 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(unsigned int lsock, struct pccard_io_map *io)
+{
+ socket_info_t *s = &socket[lsock];
+ pcmcia_win_t *w;
+ u_int reg, winnr;
+
+
+#define M8XX_SIZE (io->stop - io->start + 1)
+#define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)
+
+ 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);
+ }
+
+
+ /* 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(unsigned int 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(unsigned int 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;
+
+ 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 int m8xx_sock_init(unsigned int s)
+{
+ int i;
+ pccard_io_map io = { 0, 0, 0, 0, 1 };
+ pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
+
+ DEBUG(3, "sock_init(%d)\n", s);
+
+ mem.sys_stop = 0x1000;
+ m8xx_set_socket(s, &dead_socket);
+ for (i = 0; i < PCMCIA_IO_WIN_NO; i++) {
+ io.map = i;
+ m8xx_set_io_map(s, &io);
+ }
+ for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) {
+ mem.map = i;
+ m8xx_set_mem_map(s, &mem);
+ }
+
+ return 0;
+
+}
+
+static int m8xx_suspend(unsigned int s)
+{
+ return(m8xx_set_socket(s, &dead_socket));
+}
+static void m8xx_proc_setup(unsigned int sock, struct proc_dir_entry *base)
+{
+}
+/* ------------------------------------------------------------------------- */
+
+static struct pccard_operations m8xx_services = {
+ &m8xx_sock_init,
+ &m8xx_suspend,
+ &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,
+ &m8xx_proc_setup
+};
+
+static int __init m8xx_init(void)
+{
+ servinfo_t serv;
+ pcmcia_win_t *w;
+ u_int m;
+
+ 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;
+
+ socket[0].slot = _slot_;
+
+ ((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 + 0 * PCMCIA_MEM_WIN_NO));
+
+ w->or = 0; /* set to not valid */
+
+ DEBUG(3,"Socket %u: MemWin %u: Base 0x%08x.\n",
+ 0, 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_services) != 0) {
+ PCMCIA_ERROR("register_ss_entry() failed.\n");
+ m8xx_shutdown();
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit m8xx_exit(void)
+{
+ unregister_ss_entry(&m8xx_services);
+
+ m8xx_shutdown();
+}
+
+module_init(m8xx_init);
+module_exit(m8xx_exit);
^ permalink raw reply [flat|nested] 4+ messages in thread