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/slab.h>
50 #include <linux/timer.h>
51 #include <linux/ioport.h>
52 #include <linux/delay.h>
53 #include <linux/interrupt.h>
54 #include <linux/platform_device.h>
56 #include <asm/mpc8xx.h>
57 #include <asm/8xx_immap.h>
60 #include <pcmcia/version.h>
61 #include <pcmcia/cs_types.h>
62 #include <pcmcia/cs.h>
63 #include <pcmcia/ss.h>
66 static int pc_debug = PCMCIA_DEBUG;
67 module_param(pc_debug, int, 0);
68 #define dprintk(args...) printk(KERN_DEBUG "m8xx_pcmcia: " args);
70 #define dprintk(args...)
73 #define pcmcia_info(args...) printk(KERN_INFO "m8xx_pcmcia: "args)
74 #define pcmcia_error(args...) printk(KERN_ERR "m8xx_pcmcia: "args)
76 static const char *version = "Version 0.06, Aug 2005";
77 MODULE_LICENSE("Dual MPL/GPL");
79 #if !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B)
81 /* The RPX series use SLOT_B */
82 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
83 #define CONFIG_PCMCIA_SLOT_B
84 #define CONFIG_BD_IS_MHZ
87 /* The ADS board use SLOT_A */
89 #define CONFIG_PCMCIA_SLOT_A
90 #define CONFIG_BD_IS_MHZ
93 /* The FADS series are a mess */
95 #if defined(CONFIG_MPC860T) || defined(CONFIG_MPC860) || defined(CONFIG_MPC821)
96 #define CONFIG_PCMCIA_SLOT_A
98 #define CONFIG_PCMCIA_SLOT_B
102 #if defined(CONFIG_MPC885ADS)
103 #define CONFIG_PCMCIA_SLOT_A
104 #define PCMCIA_GLITCHY_CD
107 /* Cyclades ACS uses both slots */
109 #define CONFIG_PCMCIA_SLOT_A
110 #define CONFIG_PCMCIA_SLOT_B
113 #endif /* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */
115 #if defined(CONFIG_PCMCIA_SLOT_A) && defined(CONFIG_PCMCIA_SLOT_B)
117 #define PCMCIA_SOCKETS_NO 2
118 /* We have only 8 windows, dualsocket support will be limited. */
119 #define PCMCIA_MEM_WIN_NO 2
120 #define PCMCIA_IO_WIN_NO 2
121 #define PCMCIA_SLOT_MSG "SLOT_A and SLOT_B"
123 #elif defined(CONFIG_PCMCIA_SLOT_A) || defined(CONFIG_PCMCIA_SLOT_B)
125 #define PCMCIA_SOCKETS_NO 1
126 /* full support for one slot */
127 #define PCMCIA_MEM_WIN_NO 5
128 #define PCMCIA_IO_WIN_NO 2
130 /* define _slot_ to be able to optimize macros */
132 #ifdef CONFIG_PCMCIA_SLOT_A
134 #define PCMCIA_SLOT_MSG "SLOT_A"
137 #define PCMCIA_SLOT_MSG "SLOT_B"
141 #error m8xx_pcmcia: Bad configuration!
144 /* ------------------------------------------------------------------------- */
146 #define PCMCIA_MEM_WIN_BASE 0xe0000000 /* base address for memory window 0 */
147 #define PCMCIA_MEM_WIN_SIZE 0x04000000 /* each memory window is 64 MByte */
148 #define PCMCIA_IO_WIN_BASE _IO_BASE /* base address for io window 0 */
150 #define PCMCIA_SCHLVL PCMCIA_INTERRUPT /* Status Change Interrupt Level */
152 /* ------------------------------------------------------------------------- */
154 /* 2.4.x and newer has this always in HZ */
155 #define M8XX_BUSFREQ ((((bd_t *)&(__res))->bi_busfreq))
157 static int pcmcia_schlvl = PCMCIA_SCHLVL;
159 static DEFINE_SPINLOCK(events_lock);
162 #define PCMCIA_SOCKET_KEY_5V 1
163 #define PCMCIA_SOCKET_KEY_LV 2
165 /* look up table for pgcrx registers */
166 static u32 *m8xx_pgcrx[2] = {
167 &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pgcra,
168 &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pgcrb
172 * This structure is used to address each window in the PCMCIA controller.
174 * Keep in mind that we assume that pcmcia_win[n+1] is mapped directly
175 * after pcmcia_win[n]...
184 * For some reason the hardware guys decided to make both slots share
187 * Could someone invent object oriented hardware ?
189 * The macros are used to get the right bit from the registers.
194 #define M8XX_PCMCIA_VS1(slot) (0x80000000 >> (slot << 4))
195 #define M8XX_PCMCIA_VS2(slot) (0x40000000 >> (slot << 4))
196 #define M8XX_PCMCIA_VS_MASK(slot) (0xc0000000 >> (slot << 4))
197 #define M8XX_PCMCIA_VS_SHIFT(slot) (30 - (slot << 4))
199 #define M8XX_PCMCIA_WP(slot) (0x20000000 >> (slot << 4))
200 #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
201 #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
202 #define M8XX_PCMCIA_BVD2(slot) (0x04000000 >> (slot << 4))
203 #define M8XX_PCMCIA_BVD1(slot) (0x02000000 >> (slot << 4))
204 #define M8XX_PCMCIA_RDY(slot) (0x01000000 >> (slot << 4))
205 #define M8XX_PCMCIA_RDY_L(slot) (0x00800000 >> (slot << 4))
206 #define M8XX_PCMCIA_RDY_H(slot) (0x00400000 >> (slot << 4))
207 #define M8XX_PCMCIA_RDY_R(slot) (0x00200000 >> (slot << 4))
208 #define M8XX_PCMCIA_RDY_F(slot) (0x00100000 >> (slot << 4))
209 #define M8XX_PCMCIA_MASK(slot) (0xFFFF0000 >> (slot << 4))
211 #define M8XX_PCMCIA_POR_VALID 0x00000001
212 #define M8XX_PCMCIA_POR_WRPROT 0x00000002
213 #define M8XX_PCMCIA_POR_ATTRMEM 0x00000010
214 #define M8XX_PCMCIA_POR_IO 0x00000018
215 #define M8XX_PCMCIA_POR_16BIT 0x00000040
217 #define M8XX_PGCRX(slot) m8xx_pgcrx[slot]
219 #define M8XX_PGCRX_CXOE 0x00000080
220 #define M8XX_PGCRX_CXRESET 0x00000040
222 /* we keep one lookup table per socket to check flags */
224 #define PCMCIA_EVENTS_MAX 5 /* 4 max at a time + termination */
232 void (*handler)(void *info, u32 events);
237 socket_state_t state;
238 struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO];
239 struct pccard_io_map io_win[PCMCIA_IO_WIN_NO];
240 struct event_table events[PCMCIA_EVENTS_MAX];
241 struct pcmcia_socket socket;
244 static struct socket_info socket[PCMCIA_SOCKETS_NO];
247 * Search this table to see if the windowsize is
251 #define M8XX_SIZES_NO 32
253 static const u32 m8xx_size_to_gray[M8XX_SIZES_NO] =
255 0x00000001, 0x00000002, 0x00000008, 0x00000004,
256 0x00000080, 0x00000040, 0x00000010, 0x00000020,
257 0x00008000, 0x00004000, 0x00001000, 0x00002000,
258 0x00000100, 0x00000200, 0x00000800, 0x00000400,
260 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
261 0x01000000, 0x02000000, 0xffffffff, 0x04000000,
262 0x00010000, 0x00020000, 0x00080000, 0x00040000,
263 0x00800000, 0x00400000, 0x00100000, 0x00200000
266 /* ------------------------------------------------------------------------- */
268 static irqreturn_t m8xx_interrupt(int irq, void *dev);
270 #define PCMCIA_BMT_LIMIT (15*4) /* Bus Monitor Timeout value */
272 /* ------------------------------------------------------------------------- */
273 /* board specific stuff: */
274 /* voltage_set(), hardware_enable() and hardware_disable() */
275 /* ------------------------------------------------------------------------- */
276 /* RPX Boards from Embedded Planet */
278 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
280 /* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks.
281 * SYPCR is write once only, therefore must the slowest memory be faster
282 * than the bus monitor or we will get a machine check due to the bus timeout.
285 #define PCMCIA_BOARD_MSG "RPX CLASSIC or RPX LITE"
287 #undef PCMCIA_BMT_LIMIT
288 #define PCMCIA_BMT_LIMIT (6*8)
290 static int voltage_set(int slot, int vcc, int vpp)
297 reg |= BCSR1_PCVCTL4;
300 reg |= BCSR1_PCVCTL5;
311 reg |= BCSR1_PCVCTL6;
316 reg |= BCSR1_PCVCTL7;
321 if(!((vcc == 50) || (vcc == 0)))
324 /* first, turn off all power */
326 out_be32(((u32 *)RPX_CSR_ADDR), in_be32(((u32 *)RPX_CSR_ADDR)) & ~(BCSR1_PCVCTL4 | BCSR1_PCVCTL5 | BCSR1_PCVCTL6 | BCSR1_PCVCTL7));
328 /* enable new powersettings */
330 out_be32(((u32 *)RPX_CSR_ADDR), in_be32(((u32 *)RPX_CSR_ADDR)) | reg);
335 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
336 #define hardware_enable(_slot_) /* No hardware to enable */
337 #define hardware_disable(_slot_) /* No hardware to disable */
339 #endif /* CONFIG_RPXCLASSIC */
341 /* FADS Boards from Motorola */
343 #if defined(CONFIG_FADS)
345 #define PCMCIA_BOARD_MSG "FADS"
347 static int voltage_set(int slot, int vcc, int vpp)
355 reg |= BCSR1_PCCVCC0;
358 reg |= BCSR1_PCCVCC1;
370 reg |= BCSR1_PCCVPP1;
375 if ((vcc == 33) || (vcc == 50))
376 reg |= BCSR1_PCCVPP0;
383 /* first, turn off all power */
384 out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) & ~(BCSR1_PCCVCC_MASK | BCSR1_PCCVPP_MASK));
386 /* enable new powersettings */
387 out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) | reg);
392 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
394 static void hardware_enable(int slot)
396 out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) & ~BCSR1_PCCEN);
399 static void hardware_disable(int slot)
401 out_be32((u32 *)BCSR1, in_be32((u32 *)BCSR1) | BCSR1_PCCEN);
406 /* MPC885ADS Boards */
408 #if defined(CONFIG_MPC885ADS)
410 #define PCMCIA_BOARD_MSG "MPC885ADS"
412 static int voltage_set(int slot, int vcc, int vpp)
417 bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
423 reg |= BCSR1_PCCVCC0;
426 reg |= BCSR1_PCCVCC1;
438 reg |= BCSR1_PCCVPP1;
443 if ((vcc == 33) || (vcc == 50))
444 reg |= BCSR1_PCCVPP0;
451 /* first, turn off all power */
452 out_be32(bcsr_io, in_be32(bcsr_io) & ~(BCSR1_PCCVCC_MASK | BCSR1_PCCVPP_MASK));
454 /* enable new powersettings */
455 out_be32(bcsr_io, in_be32(bcsr_io) | reg);
465 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
467 static void hardware_enable(int slot)
471 bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
472 out_be32(bcsr_io, in_be32(bcsr_io) & ~BCSR1_PCCEN);
476 static void hardware_disable(int slot)
480 bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
481 out_be32(bcsr_io, in_be32(bcsr_io) | BCSR1_PCCEN);
487 /* ------------------------------------------------------------------------- */
488 /* Motorola MBX860 */
490 #if defined(CONFIG_MBX)
492 #define PCMCIA_BOARD_MSG "MBX"
494 static int voltage_set(int slot, int vcc, int vpp)
522 if ((vcc == 33) || (vcc == 50))
530 /* first, turn off all power */
531 out_8((u8 *)MBX_CSR2_ADDR, in_8((u8 *)MBX_CSR2_ADDR) & ~(CSR2_VCC_MASK | CSR2_VPP_MASK));
533 /* enable new powersettings */
534 out_8((u8 *)MBX_CSR2_ADDR, in_8((u8 *)MBX_CSR2_ADDR) | reg);
539 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
540 #define hardware_enable(_slot_) /* No hardware to enable */
541 #define hardware_disable(_slot_) /* No hardware to disable */
543 #endif /* CONFIG_MBX */
545 #if defined(CONFIG_PRxK)
546 #include <asm/cpld.h>
547 extern volatile fpga_pc_regs *fpga_pc;
549 #define PCMCIA_BOARD_MSG "MPC855T"
551 static int voltage_set(int slot, int vcc, int vpp)
555 cpld_regs *ccpld = get_cpld();
561 reg |= PCMCIA_VCC_33;
564 reg |= PCMCIA_VCC_50;
576 reg |= PCMCIA_VPP_VCC;
581 if ((vcc == 33) || (vcc == 50))
582 reg |= PCMCIA_VPP_12;
589 reg = reg >> (slot << 2);
590 regread = in_8(&ccpld->fpga_pc_ctl);
591 if (reg != (regread & ((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)))) {
592 /* enable new powersettings */
593 regread = regread & ~((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2));
594 out_8(&ccpld->fpga_pc_ctl, reg | regread);
601 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_LV
602 #define hardware_enable(_slot_) /* No hardware to enable */
603 #define hardware_disable(_slot_) /* No hardware to disable */
605 #endif /* CONFIG_PRxK */
607 static void m8xx_shutdown(void)
610 struct pcmcia_win *w;
612 for(i = 0; i < PCMCIA_SOCKETS_NO; i++){
613 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
615 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, M8XX_PCMCIA_MASK(i));
616 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) & ~M8XX_PCMCIA_MASK(i));
618 /* turn off interrupt and disable CxOE */
619 out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);
621 /* turn off memory windows */
622 for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
623 out_be32(&w->or, 0); /* set to not valid */
627 /* turn off voltage */
628 voltage_set(i, 0, 0);
630 /* disable external hardware */
634 free_irq(pcmcia_schlvl, NULL);
637 static struct device_driver m8xx_driver = {
638 .name = "m8xx-pcmcia",
639 .bus = &platform_bus_type,
640 .suspend = pcmcia_socket_dev_suspend,
641 .resume = pcmcia_socket_dev_resume,
644 static struct platform_device m8xx_device = {
645 .name = "m8xx-pcmcia",
649 static u32 pending_events[PCMCIA_SOCKETS_NO];
650 static DEFINE_SPINLOCK(pending_event_lock);
652 static irqreturn_t m8xx_interrupt(int irq, void *dev)
654 struct socket_info *s;
655 struct event_table *e;
656 unsigned int i, events, pscr, pipr, per;
658 dprintk("Interrupt!\n");
659 /* get interrupt sources */
661 pscr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr);
662 pipr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr);
663 per = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per);
665 for(i = 0; i < PCMCIA_SOCKETS_NO; i++) {
672 events |= e->eventbit;
678 * report only if both card detect signals are the same
680 * we depend on that CD2 is the bit to the left of CD1...
682 if(events & SS_DETECT)
683 if(((pipr & M8XX_PCMCIA_CD2(i)) >> 1) ^
684 (pipr & M8XX_PCMCIA_CD1(i)))
686 events &= ~SS_DETECT;
689 #ifdef PCMCIA_GLITCHY_CD
691 * I've experienced CD problems with my ADS board.
692 * We make an extra check to see if there was a
693 * real change of Card detection.
696 if((events & SS_DETECT) &&
698 (M8XX_PCMCIA_CD2(i) | M8XX_PCMCIA_CD1(i))) == 0) &&
699 (s->state.Vcc | s->state.Vpp)) {
700 events &= ~SS_DETECT;
701 /*printk( "CD glitch workaround - CD = 0x%08x!\n",
702 (pipr & (M8XX_PCMCIA_CD2(i)
703 | M8XX_PCMCIA_CD1(i))));*/
707 /* call the handler */
709 dprintk("slot %u: events = 0x%02x, pscr = 0x%08x, "
711 i, events, pscr, pipr);
714 spin_lock(&pending_event_lock);
715 pending_events[i] |= events;
716 spin_unlock(&pending_event_lock);
718 * Turn off RDY_L bits in the PER mask on
719 * CD interrupt receival.
721 * They can generate bad interrupts on the
722 * ACS4,8,16,32. - marcelo
724 per &= ~M8XX_PCMCIA_RDY_L(0);
725 per &= ~M8XX_PCMCIA_RDY_L(1);
727 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, per);
730 pcmcia_parse_events(&socket[i].socket, events);
734 /* clear the interrupt sources */
735 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, pscr);
737 dprintk("Interrupt done.\n");
742 static u32 m8xx_get_graycode(u32 size)
746 for(k = 0; k < M8XX_SIZES_NO; k++)
747 if(m8xx_size_to_gray[k] == size)
750 if((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
756 static u32 m8xx_get_speed(u32 ns, u32 is_io)
758 u32 reg, clocks, psst, psl, psht;
763 * We get called with IO maps setup to 0ns
764 * if not specified by the user.
765 * They should be 255ns.
771 ns = 100; /* fast memory if 0 */
775 * In PSST, PSL, PSHT fields we tell the controller
776 * timing parameters in CLKOUT clock cycles.
777 * CLKOUT is the same as GCLK2_50.
780 /* how we want to adjust the timing - in percent */
782 #define ADJ 180 /* 80 % longer accesstime - to be sure */
784 clocks = ((M8XX_BUSFREQ / 1000) * ns) / 1000;
785 clocks = (clocks * ADJ) / (100*1000);
786 if(clocks >= PCMCIA_BMT_LIMIT) {
787 printk( "Max access time limit reached\n");
788 clocks = PCMCIA_BMT_LIMIT-1;
791 psst = clocks / 7; /* setup time */
792 psht = clocks / 7; /* hold time */
793 psl = (clocks * 5) / 7; /* strobe length */
795 psst += clocks - (psst + psht + psl);
804 static int m8xx_get_status(struct pcmcia_socket *sock, unsigned int *value)
806 int lsock = container_of(sock, struct socket_info, socket)->slot;
807 struct socket_info *s = &socket[lsock];
808 unsigned int pipr, reg;
810 pipr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr);
812 *value = ((pipr & (M8XX_PCMCIA_CD1(lsock)
813 | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0;
814 *value |= (pipr & M8XX_PCMCIA_WP(lsock)) ? SS_WRPROT : 0;
816 if (s->state.flags & SS_IOCARD)
817 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_STSCHG : 0;
819 *value |= (pipr & M8XX_PCMCIA_RDY(lsock)) ? SS_READY : 0;
820 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_BATDEAD : 0;
821 *value |= (pipr & M8XX_PCMCIA_BVD2(lsock)) ? SS_BATWARN : 0;
824 if (s->state.Vcc | s->state.Vpp)
825 *value |= SS_POWERON;
829 * This driver only supports 16-Bit pc-cards.
830 * Cardbus is not handled here.
832 * To determine what voltage to use we must read the VS1 and VS2 pin.
833 * Depending on what socket type is present,
834 * different combinations mean different things.
836 * Card Key Socket Key VS1 VS2 Card Vcc for CIS parse
838 * 5V 5V, LV* NC NC 5V only 5V (if available)
840 * 5V 5V, LV* GND NC 5 or 3.3V as low as possible
842 * 5V 5V, LV* GND GND 5, 3.3, x.xV as low as possible
844 * LV* 5V - - shall not fit into socket
846 * LV* LV* GND NC 3.3V only 3.3V
848 * LV* LV* NC GND x.xV x.xV (if avail.)
850 * LV* LV* GND GND 3.3 or x.xV as low as possible
852 * *LV means Low Voltage
855 * That gives us the following table:
857 * Socket VS1 VS2 Voltage
860 * 5V NC GND none (should not be possible)
864 * LV NC NC 5V (if available)
865 * LV NC GND x.xV (if available)
869 * So, how do I determine if I have a 5V or a LV
870 * socket on my board? Look at the socket!
873 * Socket with 5V key:
874 * ++--------------------------------------------+
879 * +---------------------------------------------+
881 * Socket with LV key:
882 * ++--------------------------------------------+
887 * +---------------------------------------------+
890 * With other words - LV only cards does not fit
891 * into the 5V socket!
894 /* read out VS1 and VS2 */
896 reg = (pipr & M8XX_PCMCIA_VS_MASK(lsock))
897 >> M8XX_PCMCIA_VS_SHIFT(lsock);
899 if(socket_get(lsock) == PCMCIA_SOCKET_KEY_LV) {
903 break; /* GND, NC - 3.3V only */
906 break; /* NC. GND - x.xV only */
910 dprintk("GetStatus(%d) = %#2.2x\n", lsock, *value);
914 static int m8xx_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
916 int lsock = container_of(sock, struct socket_info, socket)->slot;
917 struct socket_info *s = &socket[lsock];
918 struct event_table *e;
922 dprintk( "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
923 "io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags,
924 state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
926 /* First, set voltage - bail out if invalid */
927 if(voltage_set(lsock, state->Vcc, state->Vpp))
930 /* Take care of reset... */
931 if(state->flags & SS_RESET)
932 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXRESET); /* active high */
934 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXRESET);
936 /* ... and output enable. */
938 /* The CxOE signal is connected to a 74541 on the ADS.
939 I guess most other boards used the ADS as a reference.
940 I tried to control the CxOE signal with SS_OUTPUT_ENA,
941 but the reset signal seems connected via the 541.
942 If the CxOE is left high are some signals tristated and
943 no pullups are present -> the cards act wierd.
944 So right now the buffers are enabled if the power is on. */
946 if(state->Vcc || state->Vpp)
947 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXOE); /* active low */
949 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXOE);
952 * We'd better turn off interrupts before
953 * we mess with the events-table..
956 spin_lock_irqsave(&events_lock, flags);
959 * Play around with the interrupt mask to be able to
960 * give the events the generic pcmcia driver wants us to.
966 if(state->csc_mask & SS_DETECT) {
967 e->eventbit = SS_DETECT;
968 reg |= e->regbit = (M8XX_PCMCIA_CD2(lsock)
969 | M8XX_PCMCIA_CD1(lsock));
972 if(state->flags & SS_IOCARD) {
976 if(state->csc_mask & SS_STSCHG) {
977 e->eventbit = SS_STSCHG;
978 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
982 * If io_irq is non-zero we should enable irq.
985 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | mk_int_int_mask(state->io_irq) << 24);
987 * Strange thing here:
988 * The manual does not tell us which interrupt
989 * the sources generate.
990 * Anyhow, I found out that RDY_L generates IREQLVL.
992 * We use level triggerd interrupts, and they don't
993 * have to be cleared in PSCR in the interrupt handler.
995 reg |= M8XX_PCMCIA_RDY_L(lsock);
998 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & 0x00ffffff);
1004 if(state->csc_mask & SS_BATDEAD) {
1005 e->eventbit = SS_BATDEAD;
1006 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
1009 if(state->csc_mask & SS_BATWARN) {
1010 e->eventbit = SS_BATWARN;
1011 reg |= e->regbit = M8XX_PCMCIA_BVD2(lsock);
1014 /* What should I trigger on - low/high,raise,fall? */
1015 if(state->csc_mask & SS_READY) {
1016 e->eventbit = SS_READY;
1017 reg |= e->regbit = 0; //??
1022 e->regbit = 0; /* terminate list */
1025 * Clear the status changed .
1026 * Port A and Port B share the same port.
1027 * Writing ones will clear the bits.
1030 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, reg);
1034 * Port A and Port B share the same port.
1035 * Need for read-modify-write.
1036 * Ones will enable the interrupt.
1040 reg |= ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per
1041 & M8XX_PCMCIA_MASK(lsock);
1044 reg |= in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) &
1045 (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1047 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, reg);
1049 spin_unlock_irqrestore(&events_lock, flags);
1051 /* copy the struct and modify the copy */
1058 static int m8xx_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
1060 int lsock = container_of(sock, struct socket_info, socket)->slot;
1062 struct socket_info *s = &socket[lsock];
1063 struct pcmcia_win *w;
1064 unsigned int reg, winnr;
1066 #define M8XX_SIZE (io->stop - io->start + 1)
1067 #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)
1069 dprintk( "SetIOMap(%d, %d, %#2.2x, %d ns, "
1070 "%#4.4x-%#4.4x)\n", lsock, io->map, io->flags,
1071 io->speed, io->start, io->stop);
1073 if ((io->map >= PCMCIA_IO_WIN_NO) || (io->start > 0xffff)
1074 || (io->stop > 0xffff) || (io->stop < io->start))
1077 if((reg = m8xx_get_graycode(M8XX_SIZE)) == -1)
1080 if(io->flags & MAP_ACTIVE) {
1082 dprintk( "io->flags & MAP_ACTIVE\n");
1084 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
1085 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
1087 /* setup registers */
1089 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
1092 out_be32(&w->or, 0); /* turn off window first */
1093 out_be32(&w->br, M8XX_BASE);
1096 reg |= M8XX_PCMCIA_POR_IO |(lsock << 2);
1098 reg |= m8xx_get_speed(io->speed, 1);
1100 if(io->flags & MAP_WRPROT)
1101 reg |= M8XX_PCMCIA_POR_WRPROT;
1103 if(io->flags & (MAP_16BIT | MAP_AUTOSZ))
1104 reg |= M8XX_PCMCIA_POR_16BIT;
1106 if(io->flags & MAP_ACTIVE)
1107 reg |= M8XX_PCMCIA_POR_VALID;
1109 out_be32(&w->or, reg);
1111 dprintk("Socket %u: Mapped io window %u at %#8.8x, "
1112 "OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1114 /* shutdown IO window */
1115 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
1116 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
1118 /* setup registers */
1120 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
1123 out_be32(&w->or, 0); /* turn off window */
1124 out_be32(&w->br, 0); /* turn off base address */
1126 dprintk("Socket %u: Unmapped io window %u at %#8.8x, "
1127 "OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1130 /* copy the struct and modify the copy */
1131 s->io_win[io->map] = *io;
1132 s->io_win[io->map].flags &= (MAP_WRPROT
1135 dprintk("SetIOMap exit\n");
1140 static int m8xx_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
1142 int lsock = container_of(sock, struct socket_info, socket)->slot;
1143 struct socket_info *s = &socket[lsock];
1144 struct pcmcia_win *w;
1145 struct pccard_mem_map *old;
1146 unsigned int reg, winnr;
1148 dprintk( "SetMemMap(%d, %d, %#2.2x, %d ns, "
1149 "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
1150 mem->speed, mem->static_start, mem->card_start);
1152 if ((mem->map >= PCMCIA_MEM_WIN_NO)
1153 // || ((mem->s) >= PCMCIA_MEM_WIN_SIZE)
1154 || (mem->card_start >= 0x04000000)
1155 || (mem->static_start & 0xfff) /* 4KByte resolution */
1156 || (mem->card_start & 0xfff))
1159 if((reg = m8xx_get_graycode(PCMCIA_MEM_WIN_SIZE)) == -1) {
1160 printk( "Cannot set size to 0x%08x.\n", PCMCIA_MEM_WIN_SIZE);
1165 winnr = (lsock * PCMCIA_MEM_WIN_NO) + mem->map;
1167 /* Setup the window in the pcmcia controller */
1169 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
1174 reg |= m8xx_get_speed(mem->speed, 0);
1176 if(mem->flags & MAP_ATTRIB)
1177 reg |= M8XX_PCMCIA_POR_ATTRMEM;
1179 if(mem->flags & MAP_WRPROT)
1180 reg |= M8XX_PCMCIA_POR_WRPROT;
1182 if(mem->flags & MAP_16BIT)
1183 reg |= M8XX_PCMCIA_POR_16BIT;
1185 if(mem->flags & MAP_ACTIVE)
1186 reg |= M8XX_PCMCIA_POR_VALID;
1188 out_be32(&w->or, reg);
1190 dprintk("Socket %u: Mapped memory window %u at %#8.8x, "
1191 "OR = %#8.8x.\n", lsock, mem->map, w->br, w->or);
1193 if(mem->flags & MAP_ACTIVE) {
1194 /* get the new base address */
1195 mem->static_start = PCMCIA_MEM_WIN_BASE +
1196 (PCMCIA_MEM_WIN_SIZE * winnr)
1200 dprintk("SetMemMap(%d, %d, %#2.2x, %d ns, "
1201 "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
1202 mem->speed, mem->static_start, mem->card_start);
1204 /* copy the struct and modify the copy */
1206 old = &s->mem_win[mem->map];
1209 old->flags &= (MAP_ATTRIB
1217 static int m8xx_sock_init(struct pcmcia_socket *sock)
1220 pccard_io_map io = { 0, 0, 0, 0, 1 };
1221 pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
1223 dprintk( "sock_init(%d)\n", s);
1225 m8xx_set_socket(sock, &dead_socket);
1226 for (i = 0; i < PCMCIA_IO_WIN_NO; i++) {
1228 m8xx_set_io_map(sock, &io);
1230 for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) {
1232 m8xx_set_mem_map(sock, &mem);
1239 static int m8xx_suspend(struct pcmcia_socket *sock)
1241 return m8xx_set_socket(sock, &dead_socket);
1244 static struct pccard_operations m8xx_services = {
1245 .init = m8xx_sock_init,
1246 .suspend = m8xx_suspend,
1247 .get_status = m8xx_get_status,
1248 .set_socket = m8xx_set_socket,
1249 .set_io_map = m8xx_set_io_map,
1250 .set_mem_map = m8xx_set_mem_map,
1253 static int __init m8xx_init(void)
1255 struct pcmcia_win *w;
1258 pcmcia_info("%s\n", version);
1260 if (driver_register(&m8xx_driver))
1263 pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG
1264 " with IRQ %u.\n", pcmcia_schlvl);
1266 /* Configure Status change interrupt */
1268 if(request_irq(pcmcia_schlvl, m8xx_interrupt, 0,
1269 "m8xx_pcmcia", NULL)) {
1270 pcmcia_error("Cannot allocate IRQ %u for SCHLVL!\n",
1275 w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
1277 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr,
1278 M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1));
1280 out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per,
1281 in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) &
1282 ~(M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1)));
1284 /* connect interrupt and disable CxOE */
1286 out_be32(M8XX_PGCRX(0), M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16));
1287 out_be32(M8XX_PGCRX(1), M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16));
1289 /* intialize the fixed memory windows */
1291 for(i = 0; i < PCMCIA_SOCKETS_NO; i++){
1292 for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1293 out_be32(&w->br, PCMCIA_MEM_WIN_BASE +
1294 (PCMCIA_MEM_WIN_SIZE
1295 * (m + i * PCMCIA_MEM_WIN_NO)));
1297 out_be32(&w->or, 0); /* set to not valid */
1303 /* turn off voltage */
1304 voltage_set(0, 0, 0);
1305 voltage_set(1, 0, 0);
1307 /* Enable external hardware */
1311 platform_device_register(&m8xx_device);
1313 for (i = 0 ; i < PCMCIA_SOCKETS_NO; i++) {
1315 socket[i].socket.owner = THIS_MODULE;
1316 socket[i].socket.features = SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP;
1317 socket[i].socket.irq_mask = 0x000;
1318 socket[i].socket.map_size = 0x1000;
1319 socket[i].socket.io_offset = 0;
1320 socket[i].socket.pci_irq = i ? 7 : 9;
1321 socket[i].socket.ops = &m8xx_services;
1322 socket[i].socket.resource_ops = &pccard_iodyn_ops;
1323 socket[i].socket.cb_dev = NULL;
1324 socket[i].socket.dev.parent = &m8xx_device.dev;
1327 for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
1328 pcmcia_register_socket(&socket[i].socket);
1333 static void __exit m8xx_exit(void)
1337 for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
1338 pcmcia_unregister_socket(&socket[i].socket);
1342 platform_device_unregister(&m8xx_device);
1343 driver_unregister(&m8xx_driver);
1346 module_init(m8xx_init);
1347 module_exit(m8xx_exit);