2 * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
4 * (C) 1999-2000 Magnus Damm <damm@opensource.se>
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) 2005-2007 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>
43 #include <linux/kernel.h>
44 #include <linux/errno.h>
45 #include <linux/timer.h>
46 #include <linux/ioport.h>
47 #include <linux/delay.h>
48 #include <linux/interrupt.h>
49 #include <linux/fsl_devices.h>
50 #include <linux/bitops.h>
51 #include <linux/of_address.h>
52 #include <linux/of_device.h>
53 #include <linux/of_irq.h>
54 #include <linux/of_platform.h>
58 #include <asm/mpc8xx.h>
59 #include <asm/8xx_immap.h>
61 #include <asm/fs_pd.h>
63 #include <pcmcia/ss.h>
65 #define pcmcia_info(args...) printk(KERN_INFO "m8xx_pcmcia: "args)
66 #define pcmcia_error(args...) printk(KERN_ERR "m8xx_pcmcia: "args)
68 static const char *version = "Version 0.06, Aug 2005";
69 MODULE_LICENSE("Dual MPL/GPL");
71 #if !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B)
73 /* The ADS board use SLOT_A */
75 #define CONFIG_PCMCIA_SLOT_A
76 #define CONFIG_BD_IS_MHZ
79 /* The FADS series are a mess */
81 #if defined(CONFIG_MPC860T) || defined(CONFIG_MPC860) || defined(CONFIG_MPC821)
82 #define CONFIG_PCMCIA_SLOT_A
84 #define CONFIG_PCMCIA_SLOT_B
88 #if defined(CONFIG_MPC885ADS)
89 #define CONFIG_PCMCIA_SLOT_A
90 #define PCMCIA_GLITCHY_CD
93 /* Cyclades ACS uses both slots */
95 #define CONFIG_PCMCIA_SLOT_A
96 #define CONFIG_PCMCIA_SLOT_B
99 #endif /* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */
101 #if defined(CONFIG_PCMCIA_SLOT_A) && defined(CONFIG_PCMCIA_SLOT_B)
103 #define PCMCIA_SOCKETS_NO 2
104 /* We have only 8 windows, dualsocket support will be limited. */
105 #define PCMCIA_MEM_WIN_NO 2
106 #define PCMCIA_IO_WIN_NO 2
107 #define PCMCIA_SLOT_MSG "SLOT_A and SLOT_B"
109 #elif defined(CONFIG_PCMCIA_SLOT_A) || defined(CONFIG_PCMCIA_SLOT_B)
111 #define PCMCIA_SOCKETS_NO 1
112 /* full support for one slot */
113 #define PCMCIA_MEM_WIN_NO 5
114 #define PCMCIA_IO_WIN_NO 2
116 /* define _slot_ to be able to optimize macros */
118 #ifdef CONFIG_PCMCIA_SLOT_A
120 #define PCMCIA_SLOT_MSG "SLOT_A"
123 #define PCMCIA_SLOT_MSG "SLOT_B"
127 #error m8xx_pcmcia: Bad configuration!
130 /* ------------------------------------------------------------------------- */
132 #define PCMCIA_MEM_WIN_BASE 0xe0000000 /* base address for memory window 0 */
133 #define PCMCIA_MEM_WIN_SIZE 0x04000000 /* each memory window is 64 MByte */
134 #define PCMCIA_IO_WIN_BASE _IO_BASE /* base address for io window 0 */
135 /* ------------------------------------------------------------------------- */
137 static int pcmcia_schlvl;
139 static DEFINE_SPINLOCK(events_lock);
141 #define PCMCIA_SOCKET_KEY_5V 1
142 #define PCMCIA_SOCKET_KEY_LV 2
144 /* look up table for pgcrx registers */
145 static u32 *m8xx_pgcrx[2];
148 * This structure is used to address each window in the PCMCIA controller.
150 * Keep in mind that we assume that pcmcia_win[n+1] is mapped directly
151 * after pcmcia_win[n]...
160 * For some reason the hardware guys decided to make both slots share
163 * Could someone invent object oriented hardware ?
165 * The macros are used to get the right bit from the registers.
170 #define M8XX_PCMCIA_VS1(slot) (0x80000000 >> (slot << 4))
171 #define M8XX_PCMCIA_VS2(slot) (0x40000000 >> (slot << 4))
172 #define M8XX_PCMCIA_VS_MASK(slot) (0xc0000000 >> (slot << 4))
173 #define M8XX_PCMCIA_VS_SHIFT(slot) (30 - (slot << 4))
175 #define M8XX_PCMCIA_WP(slot) (0x20000000 >> (slot << 4))
176 #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
177 #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
178 #define M8XX_PCMCIA_BVD2(slot) (0x04000000 >> (slot << 4))
179 #define M8XX_PCMCIA_BVD1(slot) (0x02000000 >> (slot << 4))
180 #define M8XX_PCMCIA_RDY(slot) (0x01000000 >> (slot << 4))
181 #define M8XX_PCMCIA_RDY_L(slot) (0x00800000 >> (slot << 4))
182 #define M8XX_PCMCIA_RDY_H(slot) (0x00400000 >> (slot << 4))
183 #define M8XX_PCMCIA_RDY_R(slot) (0x00200000 >> (slot << 4))
184 #define M8XX_PCMCIA_RDY_F(slot) (0x00100000 >> (slot << 4))
185 #define M8XX_PCMCIA_MASK(slot) (0xFFFF0000 >> (slot << 4))
187 #define M8XX_PCMCIA_POR_VALID 0x00000001
188 #define M8XX_PCMCIA_POR_WRPROT 0x00000002
189 #define M8XX_PCMCIA_POR_ATTRMEM 0x00000010
190 #define M8XX_PCMCIA_POR_IO 0x00000018
191 #define M8XX_PCMCIA_POR_16BIT 0x00000040
193 #define M8XX_PGCRX(slot) m8xx_pgcrx[slot]
195 #define M8XX_PGCRX_CXOE 0x00000080
196 #define M8XX_PGCRX_CXRESET 0x00000040
198 /* we keep one lookup table per socket to check flags */
200 #define PCMCIA_EVENTS_MAX 5 /* 4 max at a time + termination */
207 static const char driver_name[] = "m8xx-pcmcia";
210 void (*handler) (void *info, u32 events);
214 pcmconf8xx_t *pcmcia;
218 socket_state_t state;
219 struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO];
220 struct pccard_io_map io_win[PCMCIA_IO_WIN_NO];
221 struct event_table events[PCMCIA_EVENTS_MAX];
222 struct pcmcia_socket socket;
225 static struct socket_info socket[PCMCIA_SOCKETS_NO];
228 * Search this table to see if the windowsize is
232 #define M8XX_SIZES_NO 32
234 static const u32 m8xx_size_to_gray[M8XX_SIZES_NO] = {
235 0x00000001, 0x00000002, 0x00000008, 0x00000004,
236 0x00000080, 0x00000040, 0x00000010, 0x00000020,
237 0x00008000, 0x00004000, 0x00001000, 0x00002000,
238 0x00000100, 0x00000200, 0x00000800, 0x00000400,
240 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
241 0x01000000, 0x02000000, 0xffffffff, 0x04000000,
242 0x00010000, 0x00020000, 0x00080000, 0x00040000,
243 0x00800000, 0x00400000, 0x00100000, 0x00200000
246 /* ------------------------------------------------------------------------- */
248 static irqreturn_t m8xx_interrupt(int irq, void *dev);
250 #define PCMCIA_BMT_LIMIT (15*4) /* Bus Monitor Timeout value */
252 /* FADS Boards from Motorola */
254 #if defined(CONFIG_FADS)
256 #define PCMCIA_BOARD_MSG "FADS"
258 static int voltage_set(int slot, int vcc, int vpp)
266 reg |= BCSR1_PCCVCC0;
269 reg |= BCSR1_PCCVCC1;
281 reg |= BCSR1_PCCVPP1;
286 if ((vcc == 33) || (vcc == 50))
287 reg |= BCSR1_PCCVPP0;
294 /* first, turn off all power */
295 out_be32((u32 *) BCSR1,
296 in_be32((u32 *) BCSR1) & ~(BCSR1_PCCVCC_MASK |
299 /* enable new powersettings */
300 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | reg);
305 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
307 static void hardware_enable(int slot)
309 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) & ~BCSR1_PCCEN);
312 static void hardware_disable(int slot)
314 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | BCSR1_PCCEN);
319 /* MPC885ADS Boards */
321 #if defined(CONFIG_MPC885ADS)
323 #define PCMCIA_BOARD_MSG "MPC885ADS"
324 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
326 static inline void hardware_enable(int slot)
328 m8xx_pcmcia_ops.hw_ctrl(slot, 1);
331 static inline void hardware_disable(int slot)
333 m8xx_pcmcia_ops.hw_ctrl(slot, 0);
336 static inline int voltage_set(int slot, int vcc, int vpp)
338 return m8xx_pcmcia_ops.voltage_set(slot, vcc, vpp);
343 #if defined(CONFIG_PRxK)
344 #include <asm/cpld.h>
345 extern volatile fpga_pc_regs *fpga_pc;
347 #define PCMCIA_BOARD_MSG "MPC855T"
349 static int voltage_set(int slot, int vcc, int vpp)
353 cpld_regs *ccpld = get_cpld();
359 reg |= PCMCIA_VCC_33;
362 reg |= PCMCIA_VCC_50;
374 reg |= PCMCIA_VPP_VCC;
379 if ((vcc == 33) || (vcc == 50))
380 reg |= PCMCIA_VPP_12;
387 reg = reg >> (slot << 2);
388 regread = in_8(&ccpld->fpga_pc_ctl);
390 (regread & ((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)))) {
391 /* enable new powersettings */
393 regread & ~((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >>
395 out_8(&ccpld->fpga_pc_ctl, reg | regread);
402 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_LV
403 #define hardware_enable(_slot_) /* No hardware to enable */
404 #define hardware_disable(_slot_) /* No hardware to disable */
406 #endif /* CONFIG_PRxK */
408 static u32 pending_events[PCMCIA_SOCKETS_NO];
409 static DEFINE_SPINLOCK(pending_event_lock);
411 static irqreturn_t m8xx_interrupt(int irq, void *dev)
413 struct socket_info *s;
414 struct event_table *e;
415 unsigned int i, events, pscr, pipr, per;
416 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
418 pr_debug("m8xx_pcmcia: Interrupt!\n");
419 /* get interrupt sources */
421 pscr = in_be32(&pcmcia->pcmc_pscr);
422 pipr = in_be32(&pcmcia->pcmc_pipr);
423 per = in_be32(&pcmcia->pcmc_per);
425 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
431 if (pscr & e->regbit)
432 events |= e->eventbit;
438 * report only if both card detect signals are the same
440 * we depend on that CD2 is the bit to the left of CD1...
442 if (events & SS_DETECT)
443 if (((pipr & M8XX_PCMCIA_CD2(i)) >> 1) ^
444 (pipr & M8XX_PCMCIA_CD1(i))) {
445 events &= ~SS_DETECT;
447 #ifdef PCMCIA_GLITCHY_CD
449 * I've experienced CD problems with my ADS board.
450 * We make an extra check to see if there was a
451 * real change of Card detection.
454 if ((events & SS_DETECT) &&
456 (M8XX_PCMCIA_CD2(i) | M8XX_PCMCIA_CD1(i))) == 0) &&
457 (s->state.Vcc | s->state.Vpp)) {
458 events &= ~SS_DETECT;
459 /*printk( "CD glitch workaround - CD = 0x%08x!\n",
460 (pipr & (M8XX_PCMCIA_CD2(i)
461 | M8XX_PCMCIA_CD1(i)))); */
465 /* call the handler */
467 pr_debug("m8xx_pcmcia: slot %u: events = 0x%02x, pscr = 0x%08x, "
468 "pipr = 0x%08x\n", i, events, pscr, pipr);
471 spin_lock(&pending_event_lock);
472 pending_events[i] |= events;
473 spin_unlock(&pending_event_lock);
475 * Turn off RDY_L bits in the PER mask on
476 * CD interrupt receival.
478 * They can generate bad interrupts on the
479 * ACS4,8,16,32. - marcelo
481 per &= ~M8XX_PCMCIA_RDY_L(0);
482 per &= ~M8XX_PCMCIA_RDY_L(1);
484 out_be32(&pcmcia->pcmc_per, per);
487 pcmcia_parse_events(&socket[i].socket, events);
491 /* clear the interrupt sources */
492 out_be32(&pcmcia->pcmc_pscr, pscr);
494 pr_debug("m8xx_pcmcia: Interrupt done.\n");
499 static u32 m8xx_get_graycode(u32 size)
503 for (k = 0; k < M8XX_SIZES_NO; k++)
504 if (m8xx_size_to_gray[k] == size)
507 if ((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
513 static u32 m8xx_get_speed(u32 ns, u32 is_io, u32 bus_freq)
515 u32 reg, clocks, psst, psl, psht;
520 * We get called with IO maps setup to 0ns
521 * if not specified by the user.
522 * They should be 255ns.
528 ns = 100; /* fast memory if 0 */
532 * In PSST, PSL, PSHT fields we tell the controller
533 * timing parameters in CLKOUT clock cycles.
534 * CLKOUT is the same as GCLK2_50.
537 /* how we want to adjust the timing - in percent */
539 #define ADJ 180 /* 80 % longer accesstime - to be sure */
541 clocks = ((bus_freq / 1000) * ns) / 1000;
542 clocks = (clocks * ADJ) / (100 * 1000);
543 if (clocks >= PCMCIA_BMT_LIMIT) {
544 printk("Max access time limit reached\n");
545 clocks = PCMCIA_BMT_LIMIT - 1;
548 psst = clocks / 7; /* setup time */
549 psht = clocks / 7; /* hold time */
550 psl = (clocks * 5) / 7; /* strobe length */
552 psst += clocks - (psst + psht + psl);
561 static int m8xx_get_status(struct pcmcia_socket *sock, unsigned int *value)
563 int lsock = container_of(sock, struct socket_info, socket)->slot;
564 struct socket_info *s = &socket[lsock];
565 unsigned int pipr, reg;
566 pcmconf8xx_t *pcmcia = s->pcmcia;
568 pipr = in_be32(&pcmcia->pcmc_pipr);
570 *value = ((pipr & (M8XX_PCMCIA_CD1(lsock)
571 | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0;
572 *value |= (pipr & M8XX_PCMCIA_WP(lsock)) ? SS_WRPROT : 0;
574 if (s->state.flags & SS_IOCARD)
575 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_STSCHG : 0;
577 *value |= (pipr & M8XX_PCMCIA_RDY(lsock)) ? SS_READY : 0;
578 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_BATDEAD : 0;
579 *value |= (pipr & M8XX_PCMCIA_BVD2(lsock)) ? SS_BATWARN : 0;
582 if (s->state.Vcc | s->state.Vpp)
583 *value |= SS_POWERON;
587 * This driver only supports 16-Bit pc-cards.
588 * Cardbus is not handled here.
590 * To determine what voltage to use we must read the VS1 and VS2 pin.
591 * Depending on what socket type is present,
592 * different combinations mean different things.
594 * Card Key Socket Key VS1 VS2 Card Vcc for CIS parse
596 * 5V 5V, LV* NC NC 5V only 5V (if available)
598 * 5V 5V, LV* GND NC 5 or 3.3V as low as possible
600 * 5V 5V, LV* GND GND 5, 3.3, x.xV as low as possible
602 * LV* 5V - - shall not fit into socket
604 * LV* LV* GND NC 3.3V only 3.3V
606 * LV* LV* NC GND x.xV x.xV (if avail.)
608 * LV* LV* GND GND 3.3 or x.xV as low as possible
610 * *LV means Low Voltage
613 * That gives us the following table:
615 * Socket VS1 VS2 Voltage
618 * 5V NC GND none (should not be possible)
622 * LV NC NC 5V (if available)
623 * LV NC GND x.xV (if available)
627 * So, how do I determine if I have a 5V or a LV
628 * socket on my board? Look at the socket!
631 * Socket with 5V key:
632 * ++--------------------------------------------+
637 * +---------------------------------------------+
639 * Socket with LV key:
640 * ++--------------------------------------------+
645 * +---------------------------------------------+
648 * With other words - LV only cards does not fit
649 * into the 5V socket!
652 /* read out VS1 and VS2 */
654 reg = (pipr & M8XX_PCMCIA_VS_MASK(lsock))
655 >> M8XX_PCMCIA_VS_SHIFT(lsock);
657 if (socket_get(lsock) == PCMCIA_SOCKET_KEY_LV) {
661 break; /* GND, NC - 3.3V only */
664 break; /* NC. GND - x.xV only */
668 pr_debug("m8xx_pcmcia: GetStatus(%d) = %#2.2x\n", lsock, *value);
672 static int m8xx_set_socket(struct pcmcia_socket *sock, socket_state_t * state)
674 int lsock = container_of(sock, struct socket_info, socket)->slot;
675 struct socket_info *s = &socket[lsock];
676 struct event_table *e;
679 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
681 pr_debug("m8xx_pcmcia: SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
682 "io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags,
683 state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
685 /* First, set voltage - bail out if invalid */
686 if (voltage_set(lsock, state->Vcc, state->Vpp))
689 /* Take care of reset... */
690 if (state->flags & SS_RESET)
691 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXRESET); /* active high */
693 out_be32(M8XX_PGCRX(lsock),
694 in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXRESET);
696 /* ... and output enable. */
698 /* The CxOE signal is connected to a 74541 on the ADS.
699 I guess most other boards used the ADS as a reference.
700 I tried to control the CxOE signal with SS_OUTPUT_ENA,
701 but the reset signal seems connected via the 541.
702 If the CxOE is left high are some signals tristated and
703 no pullups are present -> the cards act weird.
704 So right now the buffers are enabled if the power is on. */
706 if (state->Vcc || state->Vpp)
707 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXOE); /* active low */
709 out_be32(M8XX_PGCRX(lsock),
710 in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXOE);
713 * We'd better turn off interrupts before
714 * we mess with the events-table..
717 spin_lock_irqsave(&events_lock, flags);
720 * Play around with the interrupt mask to be able to
721 * give the events the generic pcmcia driver wants us to.
727 if (state->csc_mask & SS_DETECT) {
728 e->eventbit = SS_DETECT;
729 reg |= e->regbit = (M8XX_PCMCIA_CD2(lsock)
730 | M8XX_PCMCIA_CD1(lsock));
733 if (state->flags & SS_IOCARD) {
737 if (state->csc_mask & SS_STSCHG) {
738 e->eventbit = SS_STSCHG;
739 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
743 * If io_irq is non-zero we should enable irq.
746 out_be32(M8XX_PGCRX(lsock),
747 in_be32(M8XX_PGCRX(lsock)) |
748 mk_int_int_mask(s->hwirq) << 24);
750 * Strange thing here:
751 * The manual does not tell us which interrupt
752 * the sources generate.
753 * Anyhow, I found out that RDY_L generates IREQLVL.
755 * We use level triggerd interrupts, and they don't
756 * have to be cleared in PSCR in the interrupt handler.
758 reg |= M8XX_PCMCIA_RDY_L(lsock);
760 out_be32(M8XX_PGCRX(lsock),
761 in_be32(M8XX_PGCRX(lsock)) & 0x00ffffff);
766 if (state->csc_mask & SS_BATDEAD) {
767 e->eventbit = SS_BATDEAD;
768 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
771 if (state->csc_mask & SS_BATWARN) {
772 e->eventbit = SS_BATWARN;
773 reg |= e->regbit = M8XX_PCMCIA_BVD2(lsock);
776 /* What should I trigger on - low/high,raise,fall? */
777 if (state->csc_mask & SS_READY) {
778 e->eventbit = SS_READY;
779 reg |= e->regbit = 0; //??
784 e->regbit = 0; /* terminate list */
787 * Clear the status changed .
788 * Port A and Port B share the same port.
789 * Writing ones will clear the bits.
792 out_be32(&pcmcia->pcmc_pscr, reg);
796 * Port A and Port B share the same port.
797 * Need for read-modify-write.
798 * Ones will enable the interrupt.
803 pcmc_per) & (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
804 out_be32(&pcmcia->pcmc_per, reg);
806 spin_unlock_irqrestore(&events_lock, flags);
808 /* copy the struct and modify the copy */
815 static int m8xx_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
817 int lsock = container_of(sock, struct socket_info, socket)->slot;
819 struct socket_info *s = &socket[lsock];
820 struct pcmcia_win *w;
821 unsigned int reg, winnr;
822 pcmconf8xx_t *pcmcia = s->pcmcia;
824 #define M8XX_SIZE (io->stop - io->start + 1)
825 #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)
827 pr_debug("m8xx_pcmcia: SetIOMap(%d, %d, %#2.2x, %d ns, "
828 "%#4.4llx-%#4.4llx)\n", lsock, io->map, io->flags,
829 io->speed, (unsigned long long)io->start,
830 (unsigned long long)io->stop);
832 if ((io->map >= PCMCIA_IO_WIN_NO) || (io->start > 0xffff)
833 || (io->stop > 0xffff) || (io->stop < io->start))
836 if ((reg = m8xx_get_graycode(M8XX_SIZE)) == -1)
839 if (io->flags & MAP_ACTIVE) {
841 pr_debug("m8xx_pcmcia: io->flags & MAP_ACTIVE\n");
843 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
844 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
846 /* setup registers */
848 w = (void *)&pcmcia->pcmc_pbr0;
851 out_be32(&w->or, 0); /* turn off window first */
852 out_be32(&w->br, M8XX_BASE);
855 reg |= M8XX_PCMCIA_POR_IO | (lsock << 2);
857 reg |= m8xx_get_speed(io->speed, 1, s->bus_freq);
859 if (io->flags & MAP_WRPROT)
860 reg |= M8XX_PCMCIA_POR_WRPROT;
862 /*if(io->flags & (MAP_16BIT | MAP_AUTOSZ)) */
863 if (io->flags & MAP_16BIT)
864 reg |= M8XX_PCMCIA_POR_16BIT;
866 if (io->flags & MAP_ACTIVE)
867 reg |= M8XX_PCMCIA_POR_VALID;
869 out_be32(&w->or, reg);
871 pr_debug("m8xx_pcmcia: Socket %u: Mapped io window %u at "
872 "%#8.8x, OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
874 /* shutdown IO window */
875 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
876 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
878 /* setup registers */
880 w = (void *)&pcmcia->pcmc_pbr0;
883 out_be32(&w->or, 0); /* turn off window */
884 out_be32(&w->br, 0); /* turn off base address */
886 pr_debug("m8xx_pcmcia: Socket %u: Unmapped io window %u at "
887 "%#8.8x, OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
890 /* copy the struct and modify the copy */
891 s->io_win[io->map] = *io;
892 s->io_win[io->map].flags &= (MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
893 pr_debug("m8xx_pcmcia: SetIOMap exit\n");
898 static int m8xx_set_mem_map(struct pcmcia_socket *sock,
899 struct pccard_mem_map *mem)
901 int lsock = container_of(sock, struct socket_info, socket)->slot;
902 struct socket_info *s = &socket[lsock];
903 struct pcmcia_win *w;
904 struct pccard_mem_map *old;
905 unsigned int reg, winnr;
906 pcmconf8xx_t *pcmcia = s->pcmcia;
908 pr_debug("m8xx_pcmcia: SetMemMap(%d, %d, %#2.2x, %d ns, "
909 "%#5.5llx, %#5.5x)\n", lsock, mem->map, mem->flags,
910 mem->speed, (unsigned long long)mem->static_start,
913 if ((mem->map >= PCMCIA_MEM_WIN_NO)
914 // || ((mem->s) >= PCMCIA_MEM_WIN_SIZE)
915 || (mem->card_start >= 0x04000000)
916 || (mem->static_start & 0xfff) /* 4KByte resolution */
917 ||(mem->card_start & 0xfff))
920 if ((reg = m8xx_get_graycode(PCMCIA_MEM_WIN_SIZE)) == -1) {
921 printk("Cannot set size to 0x%08x.\n", PCMCIA_MEM_WIN_SIZE);
926 winnr = (lsock * PCMCIA_MEM_WIN_NO) + mem->map;
928 /* Setup the window in the pcmcia controller */
930 w = (void *)&pcmcia->pcmc_pbr0;
935 reg |= m8xx_get_speed(mem->speed, 0, s->bus_freq);
937 if (mem->flags & MAP_ATTRIB)
938 reg |= M8XX_PCMCIA_POR_ATTRMEM;
940 if (mem->flags & MAP_WRPROT)
941 reg |= M8XX_PCMCIA_POR_WRPROT;
943 if (mem->flags & MAP_16BIT)
944 reg |= M8XX_PCMCIA_POR_16BIT;
946 if (mem->flags & MAP_ACTIVE)
947 reg |= M8XX_PCMCIA_POR_VALID;
949 out_be32(&w->or, reg);
951 pr_debug("m8xx_pcmcia: Socket %u: Mapped memory window %u at %#8.8x, "
952 "OR = %#8.8x.\n", lsock, mem->map, w->br, w->or);
954 if (mem->flags & MAP_ACTIVE) {
955 /* get the new base address */
956 mem->static_start = PCMCIA_MEM_WIN_BASE +
957 (PCMCIA_MEM_WIN_SIZE * winnr)
961 pr_debug("m8xx_pcmcia: SetMemMap(%d, %d, %#2.2x, %d ns, "
962 "%#5.5llx, %#5.5x)\n", lsock, mem->map, mem->flags,
963 mem->speed, (unsigned long long)mem->static_start,
966 /* copy the struct and modify the copy */
968 old = &s->mem_win[mem->map];
971 old->flags &= (MAP_ATTRIB | MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
976 static int m8xx_sock_init(struct pcmcia_socket *sock)
979 pccard_io_map io = { 0, 0, 0, 0, 1 };
980 pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
982 pr_debug("m8xx_pcmcia: sock_init(%d)\n", s);
984 m8xx_set_socket(sock, &dead_socket);
985 for (i = 0; i < PCMCIA_IO_WIN_NO; i++) {
987 m8xx_set_io_map(sock, &io);
989 for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) {
991 m8xx_set_mem_map(sock, &mem);
998 static int m8xx_sock_suspend(struct pcmcia_socket *sock)
1000 return m8xx_set_socket(sock, &dead_socket);
1003 static struct pccard_operations m8xx_services = {
1004 .init = m8xx_sock_init,
1005 .suspend = m8xx_sock_suspend,
1006 .get_status = m8xx_get_status,
1007 .set_socket = m8xx_set_socket,
1008 .set_io_map = m8xx_set_io_map,
1009 .set_mem_map = m8xx_set_mem_map,
1012 static int __init m8xx_probe(struct platform_device *ofdev)
1014 struct pcmcia_win *w;
1015 unsigned int i, m, hwirq;
1016 pcmconf8xx_t *pcmcia;
1018 struct device_node *np = ofdev->dev.of_node;
1020 pcmcia_info("%s\n", version);
1022 pcmcia = of_iomap(np, 0);
1026 pcmcia_schlvl = irq_of_parse_and_map(np, 0);
1027 hwirq = irq_map[pcmcia_schlvl].hwirq;
1028 if (pcmcia_schlvl < 0) {
1033 m8xx_pgcrx[0] = &pcmcia->pcmc_pgcra;
1034 m8xx_pgcrx[1] = &pcmcia->pcmc_pgcrb;
1036 pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG
1037 " with IRQ %u (%d). \n", pcmcia_schlvl, hwirq);
1039 /* Configure Status change interrupt */
1041 if (request_irq(pcmcia_schlvl, m8xx_interrupt, IRQF_SHARED,
1042 driver_name, socket)) {
1043 pcmcia_error("Cannot allocate IRQ %u for SCHLVL!\n",
1049 w = (void *)&pcmcia->pcmc_pbr0;
1051 out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1052 clrbits32(&pcmcia->pcmc_per, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1054 /* connect interrupt and disable CxOE */
1056 out_be32(M8XX_PGCRX(0),
1057 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
1058 out_be32(M8XX_PGCRX(1),
1059 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
1061 /* initialize the fixed memory windows */
1063 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1064 for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1065 out_be32(&w->br, PCMCIA_MEM_WIN_BASE +
1066 (PCMCIA_MEM_WIN_SIZE
1067 * (m + i * PCMCIA_MEM_WIN_NO)));
1069 out_be32(&w->or, 0); /* set to not valid */
1075 /* turn off voltage */
1076 voltage_set(0, 0, 0);
1077 voltage_set(1, 0, 0);
1079 /* Enable external hardware */
1083 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1085 socket[i].socket.owner = THIS_MODULE;
1086 socket[i].socket.features =
1087 SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP;
1088 socket[i].socket.irq_mask = 0x000;
1089 socket[i].socket.map_size = 0x1000;
1090 socket[i].socket.io_offset = 0;
1091 socket[i].socket.pci_irq = pcmcia_schlvl;
1092 socket[i].socket.ops = &m8xx_services;
1093 socket[i].socket.resource_ops = &pccard_iodyn_ops;
1094 socket[i].socket.cb_dev = NULL;
1095 socket[i].socket.dev.parent = &ofdev->dev;
1096 socket[i].pcmcia = pcmcia;
1097 socket[i].bus_freq = ppc_proc_freq;
1098 socket[i].hwirq = hwirq;
1102 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1103 status = pcmcia_register_socket(&socket[i].socket);
1105 pcmcia_error("Socket register failed\n");
1111 static int m8xx_remove(struct platform_device *ofdev)
1114 struct pcmcia_win *w;
1115 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
1117 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1118 w = (void *)&pcmcia->pcmc_pbr0;
1120 out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(i));
1121 out_be32(&pcmcia->pcmc_per,
1122 in_be32(&pcmcia->pcmc_per) & ~M8XX_PCMCIA_MASK(i));
1124 /* turn off interrupt and disable CxOE */
1125 out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);
1127 /* turn off memory windows */
1128 for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1129 out_be32(&w->or, 0); /* set to not valid */
1133 /* turn off voltage */
1134 voltage_set(i, 0, 0);
1136 /* disable external hardware */
1137 hardware_disable(i);
1139 for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
1140 pcmcia_unregister_socket(&socket[i].socket);
1143 free_irq(pcmcia_schlvl, NULL);
1148 static const struct of_device_id m8xx_pcmcia_match[] = {
1151 .compatible = "fsl,pq-pcmcia",
1156 MODULE_DEVICE_TABLE(of, m8xx_pcmcia_match);
1158 static struct platform_driver m8xx_pcmcia_driver = {
1160 .name = driver_name,
1161 .owner = THIS_MODULE,
1162 .of_match_table = m8xx_pcmcia_match,
1164 .probe = m8xx_probe,
1165 .remove = m8xx_remove,
1168 module_platform_driver(m8xx_pcmcia_driver);