2 * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
4 * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
5 * (C) 2001-2002 Montavista Software, Inc.
8 * Support for two slots by Cyclades Corporation
9 * <oliver.kurth@cyclades.de>
10 * Further fixes, v2.6 kernel port
11 * <marcelo.tosatti@cyclades.com>
13 * Some fixes, additions (C) 2005 Montavista Software, Inc.
14 * <vbordug@ru.mvista.com>
16 * "The ExCA standard specifies that socket controllers should provide
17 * two IO and five memory windows per socket, which can be independently
18 * configured and positioned in the host address space and mapped to
19 * arbitrary segments of card address space. " - David A Hinds. 1999
21 * This controller does _not_ meet the ExCA standard.
23 * m8xx pcmcia controller brief info:
24 * + 8 windows (attrib, mem, i/o)
25 * + up to two slots (SLOT_A and SLOT_B)
26 * + inputpins, outputpins, event and mask registers.
27 * - no offset register. sigh.
29 * Because of the lacking offset register we must map the whole card.
30 * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
31 * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
32 * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
33 * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
34 * They are maximum 64KByte each...
37 #include <linux/module.h>
38 #include <linux/init.h>
39 #include <linux/types.h>
40 #include <linux/fcntl.h>
41 #include <linux/string.h>
44 #include <asm/bitops.h>
45 #include <asm/system.h>
47 #include <linux/kernel.h>
48 #include <linux/errno.h>
49 #include <linux/sched.h>
50 #include <linux/slab.h>
51 #include <linux/timer.h>
52 #include <linux/ioport.h>
53 #include <linux/delay.h>
54 #include <linux/interrupt.h>
55 #include <linux/platform_device.h>
57 #include <asm/mpc8xx.h>
58 #include <asm/8xx_immap.h>
61 #include <pcmcia/version.h>
62 #include <pcmcia/cs_types.h>
63 #include <pcmcia/cs.h>
64 #include <pcmcia/ss.h>
67 static int pc_debug = PCMCIA_DEBUG;
68 module_param(pc_debug, int, 0);
69 #define dprintk(args...) printk(KERN_DEBUG "m8xx_pcmcia: " args);
71 #define dprintk(args...)
74 #define pcmcia_info(args...) printk(KERN_INFO "m8xx_pcmcia: "args)
75 #define pcmcia_error(args...) printk(KERN_ERR "m8xx_pcmcia: "args)
77 static const char *version = "Version 0.06, Aug 2005";
78 MODULE_LICENSE("Dual MPL/GPL");
80 #if !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B)
82 /* The RPX series use SLOT_B */
83 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
84 #define CONFIG_PCMCIA_SLOT_B
85 #define CONFIG_BD_IS_MHZ
88 /* The ADS board use SLOT_A */
90 #define CONFIG_PCMCIA_SLOT_A
91 #define CONFIG_BD_IS_MHZ
94 /* The FADS series are a mess */
96 #if defined(CONFIG_MPC860T) || defined(CONFIG_MPC860) || defined(CONFIG_MPC821)
97 #define CONFIG_PCMCIA_SLOT_A
99 #define CONFIG_PCMCIA_SLOT_B
103 #if defined(CONFIG_MPC885ADS)
104 #define CONFIG_PCMCIA_SLOT_A
105 #define PCMCIA_GLITCHY_CD
108 /* Cyclades ACS uses both slots */
110 #define CONFIG_PCMCIA_SLOT_A
111 #define CONFIG_PCMCIA_SLOT_B
114 #endif /* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */
116 #if defined(CONFIG_PCMCIA_SLOT_A) && defined(CONFIG_PCMCIA_SLOT_B)
118 #define PCMCIA_SOCKETS_NO 2
119 /* We have only 8 windows, dualsocket support will be limited. */
120 #define PCMCIA_MEM_WIN_NO 2
121 #define PCMCIA_IO_WIN_NO 2
122 #define PCMCIA_SLOT_MSG "SLOT_A and SLOT_B"
124 #elif defined(CONFIG_PCMCIA_SLOT_A) || defined(CONFIG_PCMCIA_SLOT_B)
126 #define PCMCIA_SOCKETS_NO 1
127 /* full support for one slot */
128 #define PCMCIA_MEM_WIN_NO 5
129 #define PCMCIA_IO_WIN_NO 2
131 /* define _slot_ to be able to optimize macros */
133 #ifdef CONFIG_PCMCIA_SLOT_A
135 #define PCMCIA_SLOT_MSG "SLOT_A"
138 #define PCMCIA_SLOT_MSG "SLOT_B"
142 #error m8xx_pcmcia: Bad configuration!
145 /* ------------------------------------------------------------------------- */
147 #define PCMCIA_MEM_WIN_BASE 0xe0000000 /* base address for memory window 0 */
148 #define PCMCIA_MEM_WIN_SIZE 0x04000000 /* each memory window is 64 MByte */
149 #define PCMCIA_IO_WIN_BASE _IO_BASE /* base address for io window 0 */
151 #define PCMCIA_SCHLVL PCMCIA_INTERRUPT /* Status Change Interrupt Level */
153 /* ------------------------------------------------------------------------- */
155 /* 2.4.x and newer has this always in HZ */
156 #define M8XX_BUSFREQ ((((bd_t *)&(__res))->bi_busfreq))
158 static int pcmcia_schlvl = PCMCIA_SCHLVL;
160 static DEFINE_SPINLOCK(events_lock);
163 #define PCMCIA_SOCKET_KEY_5V 1
164 #define PCMCIA_SOCKET_KEY_LV 2
166 /* look up table for pgcrx registers */
167 static u32 *m8xx_pgcrx[2] = {
168 &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pgcra,
169 &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pgcrb
173 * This structure is used to address each window in the PCMCIA controller.
175 * Keep in mind that we assume that pcmcia_win[n+1] is mapped directly
176 * after pcmcia_win[n]...
185 * For some reason the hardware guys decided to make both slots share
188 * Could someone invent object oriented hardware ?
190 * The macros are used to get the right bit from the registers.
195 #define M8XX_PCMCIA_VS1(slot) (0x80000000 >> (slot << 4))
196 #define M8XX_PCMCIA_VS2(slot) (0x40000000 >> (slot << 4))
197 #define M8XX_PCMCIA_VS_MASK(slot) (0xc0000000 >> (slot << 4))
198 #define M8XX_PCMCIA_VS_SHIFT(slot) (30 - (slot << 4))
200 #define M8XX_PCMCIA_WP(slot) (0x20000000 >> (slot << 4))
201 #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
202 #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
203 #define M8XX_PCMCIA_BVD2(slot) (0x04000000 >> (slot << 4))
204 #define M8XX_PCMCIA_BVD1(slot) (0x02000000 >> (slot << 4))
205 #define M8XX_PCMCIA_RDY(slot) (0x01000000 >> (slot << 4))
206 #define M8XX_PCMCIA_RDY_L(slot) (0x00800000 >> (slot << 4))
207 #define M8XX_PCMCIA_RDY_H(slot) (0x00400000 >> (slot << 4))
208 #define M8XX_PCMCIA_RDY_R(slot) (0x00200000 >> (slot << 4))
209 #define M8XX_PCMCIA_RDY_F(slot) (0x00100000 >> (slot << 4))
210 #define M8XX_PCMCIA_MASK(slot) (0xFFFF0000 >> (slot << 4))
212 #define M8XX_PCMCIA_POR_VALID 0x00000001
213 #define M8XX_PCMCIA_POR_WRPROT 0x00000002
214 #define M8XX_PCMCIA_POR_ATTRMEM 0x00000010
215 #define M8XX_PCMCIA_POR_IO 0x00000018
216 #define M8XX_PCMCIA_POR_16BIT 0x00000040
218 #define M8XX_PGCRX(slot) m8xx_pgcrx[slot]
220 #define M8XX_PGCRX_CXOE 0x00000080
221 #define M8XX_PGCRX_CXRESET 0x00000040
223 /* we keep one lookup table per socket to check flags */
225 #define PCMCIA_EVENTS_MAX 5 /* 4 max at a time + termination */
233 void (*handler)(void *info, u32 events);
238 socket_state_t state;
239 struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO];
240 struct pccard_io_map io_win[PCMCIA_IO_WIN_NO];
241 struct event_table events[PCMCIA_EVENTS_MAX];
242 struct pcmcia_socket socket;
245 static struct socket_info socket[PCMCIA_SOCKETS_NO];
248 * Search this table to see if the windowsize is
252 #define M8XX_SIZES_NO 32
254 static const u32 m8xx_size_to_gray[M8XX_SIZES_NO] =
256 0x00000001, 0x00000002, 0x00000008, 0x00000004,
257 0x00000080, 0x00000040, 0x00000010, 0x00000020,
258 0x00008000, 0x00004000, 0x00001000, 0x00002000,
259 0x00000100, 0x00000200, 0x00000800, 0x00000400,
261 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
262 0x01000000, 0x02000000, 0xffffffff, 0x04000000,
263 0x00010000, 0x00020000, 0x00080000, 0x00040000,
264 0x00800000, 0x00400000, 0x00100000, 0x00200000
267 /* ------------------------------------------------------------------------- */
269 static irqreturn_t m8xx_interrupt(int irq, void *dev);
271 #define PCMCIA_BMT_LIMIT (15*4) /* Bus Monitor Timeout value */
273 /* ------------------------------------------------------------------------- */
274 /* board specific stuff: */
275 /* voltage_set(), hardware_enable() and hardware_disable() */
276 /* ------------------------------------------------------------------------- */
277 /* RPX Boards from Embedded Planet */
279 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
281 /* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks.
282 * SYPCR is write once only, therefore must the slowest memory be faster
283 * than the bus monitor or we will get a machine check due to the bus timeout.
286 #define PCMCIA_BOARD_MSG "RPX CLASSIC or RPX LITE"
288 #undef PCMCIA_BMT_LIMIT
289 #define PCMCIA_BMT_LIMIT (6*8)
291 static int voltage_set(int slot, int vcc, int vpp)
298 reg |= BCSR1_PCVCTL4;
301 reg |= BCSR1_PCVCTL5;
312 reg |= BCSR1_PCVCTL6;
317 reg |= BCSR1_PCVCTL7;
322 if(!((vcc == 50) || (vcc == 0)))
325 /* first, turn off all power */
327 out_be32(((u32 *)RPX_CSR_ADDR), in_be32(((u32 *)RPX_CSR_ADDR)) & ~(BCSR1_PCVCTL4 | BCSR1_PCVCTL5 | BCSR1_PCVCTL6 | BCSR1_PCVCTL7));
329 /* enable new powersettings */
331 out_be32(((u32 *)RPX_CSR_ADDR), in_be32(((u32 *)RPX_CSR_ADDR)) | reg);
336 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
337 #define hardware_enable(_slot_) /* No hardware to enable */
338 #define hardware_disable(_slot_) /* No hardware to disable */
340 #endif /* CONFIG_RPXCLASSIC */
342 /* FADS Boards from Motorola */
344 #if defined(CONFIG_FADS)
346 #define PCMCIA_BOARD_MSG "FADS"
348 static int voltage_set(int slot, int vcc, int vpp)
356 reg |= BCSR1_PCCVCC0;
359 reg |= BCSR1_PCCVCC1;
371 reg |= BCSR1_PCCVPP1;
376 if ((vcc == 33) || (vcc == 50))
377 reg |= BCSR1_PCCVPP0;
384 /* first, turn off all power */
385 out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) & ~(BCSR1_PCCVCC_MASK | BCSR1_PCCVPP_MASK));
387 /* enable new powersettings */
388 out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) | reg);
393 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
395 static void hardware_enable(int slot)
397 out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) & ~BCSR1_PCCEN);
400 static void hardware_disable(int slot)
402 out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) | BCSR1_PCCEN);
407 /* MPC885ADS Boards */
409 #if defined(CONFIG_MPC885ADS)
411 #define PCMCIA_BOARD_MSG "MPC885ADS"
413 static int voltage_set(int slot, int vcc, int vpp)
418 bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
424 reg |= BCSR1_PCCVCC0;
427 reg |= BCSR1_PCCVCC1;
439 reg |= BCSR1_PCCVPP1;
444 if ((vcc == 33) || (vcc == 50))
445 reg |= BCSR1_PCCVPP0;
452 /* first, turn off all power */
453 out_be32(bcsr_io, in_be32(bcsr_io) & ~(BCSR1_PCCVCC_MASK | BCSR1_PCCVPP_MASK));
455 /* enable new powersettings */
456 out_be32(bcsr_io, in_be32(bcsr_io) | reg);
462 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
464 static void hardware_enable(int slot)
468 bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
469 out_be32(bcsr_io, in_be32(bcsr_io) & ~BCSR1_PCCEN);
473 static void hardware_disable(int slot)
477 bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
478 out_be32(bcsr_io, in_be32(bcsr_io) | BCSR1_PCCEN);
484 /* ------------------------------------------------------------------------- */
485 /* Motorola MBX860 */
487 #if defined(CONFIG_MBX)
489 #define PCMCIA_BOARD_MSG "MBX"
491 static int voltage_set(int slot, int vcc, int vpp)
519 if ((vcc == 33) || (vcc == 50))
527 /* first, turn off all power */
528 out_8((u8 *)MBX_CSR2_ADDR, in_8((u8 *)MBX_CSR2_ADDR) & ~(CSR2_VCC_MASK | CSR2_VPP_MASK));
530 /* enable new powersettings */
531 out_8((u8 *)MBX_CSR2_ADDR, in_8((u8 *)MBX_CSR2_ADDR) | reg);
536 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
537 #define hardware_enable(_slot_) /* No hardware to enable */
538 #define hardware_disable(_slot_) /* No hardware to disable */
540 #endif /* CONFIG_MBX */
542 #if defined(CONFIG_PRxK)
543 #include <asm/cpld.h>
544 extern volatile fpga_pc_regs *fpga_pc;
546 #define PCMCIA_BOARD_MSG "MPC855T"
548 static int voltage_set(int slot, int vcc, int vpp)
552 cpld_regs *ccpld = get_cpld();
558 reg |= PCMCIA_VCC_33;
561 reg |= PCMCIA_VCC_50;
573 reg |= PCMCIA_VPP_VCC;
578 if ((vcc == 33) || (vcc == 50))
579 reg |= PCMCIA_VPP_12;
586 reg = reg >> (slot << 2);
587 regread = in_8(&ccpld->fpga_pc_ctl);
588 if (reg != (regread & ((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)))) {
589 /* enable new powersettings */
590 regread = regread & ~((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2));
591 out_8(&ccpld->fpga_pc_ctl, reg | regread);
598 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_LV
599 #define hardware_enable(_slot_) /* No hardware to enable */
600 #define hardware_disable(_slot_) /* No hardware to disable */
602 #endif /* CONFIG_PRxK */
604 static void m8xx_shutdown(void)
607 struct pcmcia_win *w;
609 for(i = 0; i < PCMCIA_SOCKETS_NO; i++){
610 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
612 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, M8XX_PCMCIA_MASK(i));
613 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) & ~M8XX_PCMCIA_MASK(i));
615 /* turn off interrupt and disable CxOE */
616 out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);
618 /* turn off memory windows */
619 for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
620 out_be32(&w->or, 0); /* set to not valid */
624 /* turn off voltage */
625 voltage_set(i, 0, 0);
627 /* disable external hardware */
631 free_irq(pcmcia_schlvl, NULL);
634 static struct device_driver m8xx_driver = {
635 .name = "m8xx-pcmcia",
636 .bus = &platform_bus_type,
637 .suspend = pcmcia_socket_dev_suspend,
638 .resume = pcmcia_socket_dev_resume,
641 static struct platform_device m8xx_device = {
642 .name = "m8xx-pcmcia",
646 static u32 pending_events[PCMCIA_SOCKETS_NO];
647 static DEFINE_SPINLOCK(pending_event_lock);
649 static irqreturn_t m8xx_interrupt(int irq, void *dev)
651 struct socket_info *s;
652 struct event_table *e;
653 unsigned int i, events, pscr, pipr, per;
655 dprintk("Interrupt!\n");
656 /* get interrupt sources */
658 pscr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr);
659 pipr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr);
660 per = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per);
662 for(i = 0; i < PCMCIA_SOCKETS_NO; i++) {
669 events |= e->eventbit;
675 * report only if both card detect signals are the same
677 * we depend on that CD2 is the bit to the left of CD1...
679 if(events & SS_DETECT)
680 if(((pipr & M8XX_PCMCIA_CD2(i)) >> 1) ^
681 (pipr & M8XX_PCMCIA_CD1(i)))
683 events &= ~SS_DETECT;
686 #ifdef PCMCIA_GLITCHY_CD
688 * I've experienced CD problems with my ADS board.
689 * We make an extra check to see if there was a
690 * real change of Card detection.
693 if((events & SS_DETECT) &&
695 (M8XX_PCMCIA_CD2(i) | M8XX_PCMCIA_CD1(i))) == 0) &&
696 (s->state.Vcc | s->state.Vpp)) {
697 events &= ~SS_DETECT;
698 /*printk( "CD glitch workaround - CD = 0x%08x!\n",
699 (pipr & (M8XX_PCMCIA_CD2(i)
700 | M8XX_PCMCIA_CD1(i))));*/
704 /* call the handler */
706 dprintk("slot %u: events = 0x%02x, pscr = 0x%08x, "
708 i, events, pscr, pipr);
711 spin_lock(&pending_event_lock);
712 pending_events[i] |= events;
713 spin_unlock(&pending_event_lock);
715 * Turn off RDY_L bits in the PER mask on
716 * CD interrupt receival.
718 * They can generate bad interrupts on the
719 * ACS4,8,16,32. - marcelo
721 per &= ~M8XX_PCMCIA_RDY_L(0);
722 per &= ~M8XX_PCMCIA_RDY_L(1);
724 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, per);
727 pcmcia_parse_events(&socket[i].socket, events);
731 /* clear the interrupt sources */
732 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, pscr);
734 dprintk("Interrupt done.\n");
739 static u32 m8xx_get_graycode(u32 size)
743 for(k = 0; k < M8XX_SIZES_NO; k++)
744 if(m8xx_size_to_gray[k] == size)
747 if((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
753 static u32 m8xx_get_speed(u32 ns, u32 is_io)
755 u32 reg, clocks, psst, psl, psht;
760 * We get called with IO maps setup to 0ns
761 * if not specified by the user.
762 * They should be 255ns.
768 ns = 100; /* fast memory if 0 */
772 * In PSST, PSL, PSHT fields we tell the controller
773 * timing parameters in CLKOUT clock cycles.
774 * CLKOUT is the same as GCLK2_50.
777 /* how we want to adjust the timing - in percent */
779 #define ADJ 180 /* 80 % longer accesstime - to be sure */
781 clocks = ((M8XX_BUSFREQ / 1000) * ns) / 1000;
782 clocks = (clocks * ADJ) / (100*1000);
783 if(clocks >= PCMCIA_BMT_LIMIT) {
784 printk( "Max access time limit reached\n");
785 clocks = PCMCIA_BMT_LIMIT-1;
788 psst = clocks / 7; /* setup time */
789 psht = clocks / 7; /* hold time */
790 psl = (clocks * 5) / 7; /* strobe length */
792 psst += clocks - (psst + psht + psl);
801 static int m8xx_get_status(struct pcmcia_socket *sock, unsigned int *value)
803 int lsock = container_of(sock, struct socket_info, socket)->slot;
804 struct socket_info *s = &socket[lsock];
805 unsigned int pipr, reg;
807 pipr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr);
809 *value = ((pipr & (M8XX_PCMCIA_CD1(lsock)
810 | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0;
811 *value |= (pipr & M8XX_PCMCIA_WP(lsock)) ? SS_WRPROT : 0;
813 if (s->state.flags & SS_IOCARD)
814 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_STSCHG : 0;
816 *value |= (pipr & M8XX_PCMCIA_RDY(lsock)) ? SS_READY : 0;
817 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_BATDEAD : 0;
818 *value |= (pipr & M8XX_PCMCIA_BVD2(lsock)) ? SS_BATWARN : 0;
821 if (s->state.Vcc | s->state.Vpp)
822 *value |= SS_POWERON;
826 * This driver only supports 16-Bit pc-cards.
827 * Cardbus is not handled here.
829 * To determine what voltage to use we must read the VS1 and VS2 pin.
830 * Depending on what socket type is present,
831 * different combinations mean different things.
833 * Card Key Socket Key VS1 VS2 Card Vcc for CIS parse
835 * 5V 5V, LV* NC NC 5V only 5V (if available)
837 * 5V 5V, LV* GND NC 5 or 3.3V as low as possible
839 * 5V 5V, LV* GND GND 5, 3.3, x.xV as low as possible
841 * LV* 5V - - shall not fit into socket
843 * LV* LV* GND NC 3.3V only 3.3V
845 * LV* LV* NC GND x.xV x.xV (if avail.)
847 * LV* LV* GND GND 3.3 or x.xV as low as possible
849 * *LV means Low Voltage
852 * That gives us the following table:
854 * Socket VS1 VS2 Voltage
857 * 5V NC GND none (should not be possible)
861 * LV NC NC 5V (if available)
862 * LV NC GND x.xV (if available)
866 * So, how do I determine if I have a 5V or a LV
867 * socket on my board? Look at the socket!
870 * Socket with 5V key:
871 * ++--------------------------------------------+
876 * +---------------------------------------------+
878 * Socket with LV key:
879 * ++--------------------------------------------+
884 * +---------------------------------------------+
887 * With other words - LV only cards does not fit
888 * into the 5V socket!
891 /* read out VS1 and VS2 */
893 reg = (pipr & M8XX_PCMCIA_VS_MASK(lsock))
894 >> M8XX_PCMCIA_VS_SHIFT(lsock);
896 if(socket_get(lsock) == PCMCIA_SOCKET_KEY_LV) {
900 break; /* GND, NC - 3.3V only */
903 break; /* NC. GND - x.xV only */
907 dprintk("GetStatus(%d) = %#2.2x\n", lsock, *value);
911 static int m8xx_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
913 int lsock = container_of(sock, struct socket_info, socket)->slot;
914 struct socket_info *s = &socket[lsock];
915 struct event_table *e;
919 dprintk( "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
920 "io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags,
921 state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
923 /* First, set voltage - bail out if invalid */
924 if(voltage_set(lsock, state->Vcc, state->Vpp))
927 /* Take care of reset... */
928 if(state->flags & SS_RESET)
929 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXRESET); /* active high */
931 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXRESET);
933 /* ... and output enable. */
935 /* The CxOE signal is connected to a 74541 on the ADS.
936 I guess most other boards used the ADS as a reference.
937 I tried to control the CxOE signal with SS_OUTPUT_ENA,
938 but the reset signal seems connected via the 541.
939 If the CxOE is left high are some signals tristated and
940 no pullups are present -> the cards act wierd.
941 So right now the buffers are enabled if the power is on. */
943 if(state->Vcc || state->Vpp)
944 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXOE); /* active low */
946 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXOE);
949 * We'd better turn off interrupts before
950 * we mess with the events-table..
953 spin_lock_irqsave(&events_lock, flags);
956 * Play around with the interrupt mask to be able to
957 * give the events the generic pcmcia driver wants us to.
963 if(state->csc_mask & SS_DETECT) {
964 e->eventbit = SS_DETECT;
965 reg |= e->regbit = (M8XX_PCMCIA_CD2(lsock)
966 | M8XX_PCMCIA_CD1(lsock));
969 if(state->flags & SS_IOCARD) {
973 if(state->csc_mask & SS_STSCHG) {
974 e->eventbit = SS_STSCHG;
975 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
979 * If io_irq is non-zero we should enable irq.
982 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | mk_int_int_mask(state->io_irq) << 24);
984 * Strange thing here:
985 * The manual does not tell us which interrupt
986 * the sources generate.
987 * Anyhow, I found out that RDY_L generates IREQLVL.
989 * We use level triggerd interrupts, and they don't
990 * have to be cleared in PSCR in the interrupt handler.
992 reg |= M8XX_PCMCIA_RDY_L(lsock);
995 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & 0x00ffffff);
1001 if(state->csc_mask & SS_BATDEAD) {
1002 e->eventbit = SS_BATDEAD;
1003 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
1006 if(state->csc_mask & SS_BATWARN) {
1007 e->eventbit = SS_BATWARN;
1008 reg |= e->regbit = M8XX_PCMCIA_BVD2(lsock);
1011 /* What should I trigger on - low/high,raise,fall? */
1012 if(state->csc_mask & SS_READY) {
1013 e->eventbit = SS_READY;
1014 reg |= e->regbit = 0; //??
1019 e->regbit = 0; /* terminate list */
1022 * Clear the status changed .
1023 * Port A and Port B share the same port.
1024 * Writing ones will clear the bits.
1027 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, reg);
1031 * Port A and Port B share the same port.
1032 * Need for read-modify-write.
1033 * Ones will enable the interrupt.
1037 reg |= ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per
1038 & M8XX_PCMCIA_MASK(lsock);
1041 reg |= in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) &
1042 (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1044 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, reg);
1046 spin_unlock_irqrestore(&events_lock, flags);
1048 /* copy the struct and modify the copy */
1055 static int m8xx_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
1057 int lsock = container_of(sock, struct socket_info, socket)->slot;
1059 struct socket_info *s = &socket[lsock];
1060 struct pcmcia_win *w;
1061 unsigned int reg, winnr;
1063 #define M8XX_SIZE (io->stop - io->start + 1)
1064 #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)
1066 dprintk( "SetIOMap(%d, %d, %#2.2x, %d ns, "
1067 "%#4.4x-%#4.4x)\n", lsock, io->map, io->flags,
1068 io->speed, io->start, io->stop);
1070 if ((io->map >= PCMCIA_IO_WIN_NO) || (io->start > 0xffff)
1071 || (io->stop > 0xffff) || (io->stop < io->start))
1074 if((reg = m8xx_get_graycode(M8XX_SIZE)) == -1)
1077 if(io->flags & MAP_ACTIVE) {
1079 dprintk( "io->flags & MAP_ACTIVE\n");
1081 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
1082 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
1084 /* setup registers */
1086 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
1089 out_be32(&w->or, 0); /* turn off window first */
1090 out_be32(&w->br, M8XX_BASE);
1093 reg |= M8XX_PCMCIA_POR_IO |(lsock << 2);
1095 reg |= m8xx_get_speed(io->speed, 1);
1097 if(io->flags & MAP_WRPROT)
1098 reg |= M8XX_PCMCIA_POR_WRPROT;
1100 if(io->flags & (MAP_16BIT | MAP_AUTOSZ))
1101 reg |= M8XX_PCMCIA_POR_16BIT;
1103 if(io->flags & MAP_ACTIVE)
1104 reg |= M8XX_PCMCIA_POR_VALID;
1106 out_be32(&w->or, reg);
1108 dprintk("Socket %u: Mapped io window %u at %#8.8x, "
1109 "OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1111 /* shutdown IO window */
1112 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
1113 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
1115 /* setup registers */
1117 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
1120 out_be32(&w->or, 0); /* turn off window */
1121 out_be32(&w->br, 0); /* turn off base address */
1123 dprintk("Socket %u: Unmapped io window %u at %#8.8x, "
1124 "OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1127 /* copy the struct and modify the copy */
1128 s->io_win[io->map] = *io;
1129 s->io_win[io->map].flags &= (MAP_WRPROT
1132 dprintk("SetIOMap exit\n");
1137 static int m8xx_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
1139 int lsock = container_of(sock, struct socket_info, socket)->slot;
1140 struct socket_info *s = &socket[lsock];
1141 struct pcmcia_win *w;
1142 struct pccard_mem_map *old;
1143 unsigned int reg, winnr;
1145 dprintk( "SetMemMap(%d, %d, %#2.2x, %d ns, "
1146 "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
1147 mem->speed, mem->static_start, mem->card_start);
1149 if ((mem->map >= PCMCIA_MEM_WIN_NO)
1150 // || ((mem->s) >= PCMCIA_MEM_WIN_SIZE)
1151 || (mem->card_start >= 0x04000000)
1152 || (mem->static_start & 0xfff) /* 4KByte resolution */
1153 || (mem->card_start & 0xfff))
1156 if((reg = m8xx_get_graycode(PCMCIA_MEM_WIN_SIZE)) == -1) {
1157 printk( "Cannot set size to 0x%08x.\n", PCMCIA_MEM_WIN_SIZE);
1162 winnr = (lsock * PCMCIA_MEM_WIN_NO) + mem->map;
1164 /* Setup the window in the pcmcia controller */
1166 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
1171 reg |= m8xx_get_speed(mem->speed, 0);
1173 if(mem->flags & MAP_ATTRIB)
1174 reg |= M8XX_PCMCIA_POR_ATTRMEM;
1176 if(mem->flags & MAP_WRPROT)
1177 reg |= M8XX_PCMCIA_POR_WRPROT;
1179 if(mem->flags & MAP_16BIT)
1180 reg |= M8XX_PCMCIA_POR_16BIT;
1182 if(mem->flags & MAP_ACTIVE)
1183 reg |= M8XX_PCMCIA_POR_VALID;
1185 out_be32(&w->or, reg);
1187 dprintk("Socket %u: Mapped memory window %u at %#8.8x, "
1188 "OR = %#8.8x.\n", lsock, mem->map, w->br, w->or);
1190 if(mem->flags & MAP_ACTIVE) {
1191 /* get the new base address */
1192 mem->static_start = PCMCIA_MEM_WIN_BASE +
1193 (PCMCIA_MEM_WIN_SIZE * winnr)
1197 dprintk("SetMemMap(%d, %d, %#2.2x, %d ns, "
1198 "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
1199 mem->speed, mem->static_start, mem->card_start);
1201 /* copy the struct and modify the copy */
1203 old = &s->mem_win[mem->map];
1206 old->flags &= (MAP_ATTRIB
1214 static int m8xx_sock_init(struct pcmcia_socket *sock)
1217 pccard_io_map io = { 0, 0, 0, 0, 1 };
1218 pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
1220 dprintk( "sock_init(%d)\n", s);
1222 m8xx_set_socket(sock, &dead_socket);
1223 for (i = 0; i < PCMCIA_IO_WIN_NO; i++) {
1225 m8xx_set_io_map(sock, &io);
1227 for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) {
1229 m8xx_set_mem_map(sock, &mem);
1236 static int m8xx_suspend(struct pcmcia_socket *sock)
1238 return m8xx_set_socket(sock, &dead_socket);
1241 static struct pccard_operations m8xx_services = {
1242 .init = m8xx_sock_init,
1243 .suspend = m8xx_suspend,
1244 .get_status = m8xx_get_status,
1245 .set_socket = m8xx_set_socket,
1246 .set_io_map = m8xx_set_io_map,
1247 .set_mem_map = m8xx_set_mem_map,
1250 static int __init m8xx_init(void)
1252 struct pcmcia_win *w;
1255 pcmcia_info("%s\n", version);
1257 if (driver_register(&m8xx_driver))
1260 pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG
1261 " with IRQ %u.\n", pcmcia_schlvl);
1263 /* Configure Status change interrupt */
1265 if(request_irq(pcmcia_schlvl, m8xx_interrupt, 0,
1266 "m8xx_pcmcia", NULL)) {
1267 pcmcia_error("Cannot allocate IRQ %u for SCHLVL!\n",
1272 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
1274 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr,
1275 M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1));
1277 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per,
1278 in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) &
1279 ~(M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1)));
1281 /* connect interrupt and disable CxOE */
1283 out_be32(M8XX_PGCRX(0), M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16));
1284 out_be32(M8XX_PGCRX(1), M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16));
1286 /* intialize the fixed memory windows */
1288 for(i = 0; i < PCMCIA_SOCKETS_NO; i++){
1289 for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1290 out_be32(&w->br, PCMCIA_MEM_WIN_BASE +
1291 (PCMCIA_MEM_WIN_SIZE
1292 * (m + i * PCMCIA_MEM_WIN_NO)));
1294 out_be32(&w->or, 0); /* set to not valid */
1300 /* turn off voltage */
1301 voltage_set(0, 0, 0);
1302 voltage_set(1, 0, 0);
1304 /* Enable external hardware */
1308 platform_device_register(&m8xx_device);
1310 for (i = 0 ; i < PCMCIA_SOCKETS_NO; i++) {
1312 socket[i].socket.owner = THIS_MODULE;
1313 socket[i].socket.features = SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP;
1314 socket[i].socket.irq_mask = 0x000;
1315 socket[i].socket.map_size = 0x1000;
1316 socket[i].socket.io_offset = 0;
1317 socket[i].socket.pci_irq = i ? 7 : 9;
1318 socket[i].socket.ops = &m8xx_services;
1319 socket[i].socket.resource_ops = &pccard_iodyn_ops;
1320 socket[i].socket.cb_dev = NULL;
1321 socket[i].socket.dev.dev = &m8xx_device.dev;
1324 for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
1325 pcmcia_register_socket(&socket[i].socket);
1330 static void __exit m8xx_exit(void)
1334 for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
1335 pcmcia_unregister_socket(&socket[i].socket);
1339 platform_device_unregister(&m8xx_device);
1340 driver_unregister(&m8xx_driver);
1343 module_init(m8xx_init);
1344 module_exit(m8xx_exit);