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_device.h>
52 #include <linux/of_platform.h>
55 #include <asm/system.h>
57 #include <asm/mpc8xx.h>
58 #include <asm/8xx_immap.h>
60 #include <asm/fs_pd.h>
62 #include <pcmcia/cs.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 RPX series use SLOT_B */
74 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
75 #define CONFIG_PCMCIA_SLOT_B
76 #define CONFIG_BD_IS_MHZ
79 /* The ADS board use SLOT_A */
81 #define CONFIG_PCMCIA_SLOT_A
82 #define CONFIG_BD_IS_MHZ
85 /* The FADS series are a mess */
87 #if defined(CONFIG_MPC860T) || defined(CONFIG_MPC860) || defined(CONFIG_MPC821)
88 #define CONFIG_PCMCIA_SLOT_A
90 #define CONFIG_PCMCIA_SLOT_B
94 #if defined(CONFIG_MPC885ADS)
95 #define CONFIG_PCMCIA_SLOT_A
96 #define PCMCIA_GLITCHY_CD
99 /* Cyclades ACS uses both slots */
101 #define CONFIG_PCMCIA_SLOT_A
102 #define CONFIG_PCMCIA_SLOT_B
105 #endif /* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */
107 #if defined(CONFIG_PCMCIA_SLOT_A) && defined(CONFIG_PCMCIA_SLOT_B)
109 #define PCMCIA_SOCKETS_NO 2
110 /* We have only 8 windows, dualsocket support will be limited. */
111 #define PCMCIA_MEM_WIN_NO 2
112 #define PCMCIA_IO_WIN_NO 2
113 #define PCMCIA_SLOT_MSG "SLOT_A and SLOT_B"
115 #elif defined(CONFIG_PCMCIA_SLOT_A) || defined(CONFIG_PCMCIA_SLOT_B)
117 #define PCMCIA_SOCKETS_NO 1
118 /* full support for one slot */
119 #define PCMCIA_MEM_WIN_NO 5
120 #define PCMCIA_IO_WIN_NO 2
122 /* define _slot_ to be able to optimize macros */
124 #ifdef CONFIG_PCMCIA_SLOT_A
126 #define PCMCIA_SLOT_MSG "SLOT_A"
129 #define PCMCIA_SLOT_MSG "SLOT_B"
133 #error m8xx_pcmcia: Bad configuration!
136 /* ------------------------------------------------------------------------- */
138 #define PCMCIA_MEM_WIN_BASE 0xe0000000 /* base address for memory window 0 */
139 #define PCMCIA_MEM_WIN_SIZE 0x04000000 /* each memory window is 64 MByte */
140 #define PCMCIA_IO_WIN_BASE _IO_BASE /* base address for io window 0 */
141 /* ------------------------------------------------------------------------- */
143 static int pcmcia_schlvl;
145 static DEFINE_SPINLOCK(events_lock);
147 #define PCMCIA_SOCKET_KEY_5V 1
148 #define PCMCIA_SOCKET_KEY_LV 2
150 /* look up table for pgcrx registers */
151 static u32 *m8xx_pgcrx[2];
154 * This structure is used to address each window in the PCMCIA controller.
156 * Keep in mind that we assume that pcmcia_win[n+1] is mapped directly
157 * after pcmcia_win[n]...
166 * For some reason the hardware guys decided to make both slots share
169 * Could someone invent object oriented hardware ?
171 * The macros are used to get the right bit from the registers.
176 #define M8XX_PCMCIA_VS1(slot) (0x80000000 >> (slot << 4))
177 #define M8XX_PCMCIA_VS2(slot) (0x40000000 >> (slot << 4))
178 #define M8XX_PCMCIA_VS_MASK(slot) (0xc0000000 >> (slot << 4))
179 #define M8XX_PCMCIA_VS_SHIFT(slot) (30 - (slot << 4))
181 #define M8XX_PCMCIA_WP(slot) (0x20000000 >> (slot << 4))
182 #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
183 #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
184 #define M8XX_PCMCIA_BVD2(slot) (0x04000000 >> (slot << 4))
185 #define M8XX_PCMCIA_BVD1(slot) (0x02000000 >> (slot << 4))
186 #define M8XX_PCMCIA_RDY(slot) (0x01000000 >> (slot << 4))
187 #define M8XX_PCMCIA_RDY_L(slot) (0x00800000 >> (slot << 4))
188 #define M8XX_PCMCIA_RDY_H(slot) (0x00400000 >> (slot << 4))
189 #define M8XX_PCMCIA_RDY_R(slot) (0x00200000 >> (slot << 4))
190 #define M8XX_PCMCIA_RDY_F(slot) (0x00100000 >> (slot << 4))
191 #define M8XX_PCMCIA_MASK(slot) (0xFFFF0000 >> (slot << 4))
193 #define M8XX_PCMCIA_POR_VALID 0x00000001
194 #define M8XX_PCMCIA_POR_WRPROT 0x00000002
195 #define M8XX_PCMCIA_POR_ATTRMEM 0x00000010
196 #define M8XX_PCMCIA_POR_IO 0x00000018
197 #define M8XX_PCMCIA_POR_16BIT 0x00000040
199 #define M8XX_PGCRX(slot) m8xx_pgcrx[slot]
201 #define M8XX_PGCRX_CXOE 0x00000080
202 #define M8XX_PGCRX_CXRESET 0x00000040
204 /* we keep one lookup table per socket to check flags */
206 #define PCMCIA_EVENTS_MAX 5 /* 4 max at a time + termination */
213 static const char driver_name[] = "m8xx-pcmcia";
216 void (*handler) (void *info, u32 events);
220 pcmconf8xx_t *pcmcia;
224 socket_state_t state;
225 struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO];
226 struct pccard_io_map io_win[PCMCIA_IO_WIN_NO];
227 struct event_table events[PCMCIA_EVENTS_MAX];
228 struct pcmcia_socket socket;
231 static struct socket_info socket[PCMCIA_SOCKETS_NO];
234 * Search this table to see if the windowsize is
238 #define M8XX_SIZES_NO 32
240 static const u32 m8xx_size_to_gray[M8XX_SIZES_NO] = {
241 0x00000001, 0x00000002, 0x00000008, 0x00000004,
242 0x00000080, 0x00000040, 0x00000010, 0x00000020,
243 0x00008000, 0x00004000, 0x00001000, 0x00002000,
244 0x00000100, 0x00000200, 0x00000800, 0x00000400,
246 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
247 0x01000000, 0x02000000, 0xffffffff, 0x04000000,
248 0x00010000, 0x00020000, 0x00080000, 0x00040000,
249 0x00800000, 0x00400000, 0x00100000, 0x00200000
252 /* ------------------------------------------------------------------------- */
254 static irqreturn_t m8xx_interrupt(int irq, void *dev);
256 #define PCMCIA_BMT_LIMIT (15*4) /* Bus Monitor Timeout value */
258 /* ------------------------------------------------------------------------- */
259 /* board specific stuff: */
260 /* voltage_set(), hardware_enable() and hardware_disable() */
261 /* ------------------------------------------------------------------------- */
262 /* RPX Boards from Embedded Planet */
264 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
266 /* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks.
267 * SYPCR is write once only, therefore must the slowest memory be faster
268 * than the bus monitor or we will get a machine check due to the bus timeout.
271 #define PCMCIA_BOARD_MSG "RPX CLASSIC or RPX LITE"
273 #undef PCMCIA_BMT_LIMIT
274 #define PCMCIA_BMT_LIMIT (6*8)
276 static int voltage_set(int slot, int vcc, int vpp)
284 reg |= BCSR1_PCVCTL4;
287 reg |= BCSR1_PCVCTL5;
299 reg |= BCSR1_PCVCTL6;
304 reg |= BCSR1_PCVCTL7;
309 if (!((vcc == 50) || (vcc == 0)))
312 /* first, turn off all power */
314 out_be32(((u32 *) RPX_CSR_ADDR),
315 in_be32(((u32 *) RPX_CSR_ADDR)) & ~(BCSR1_PCVCTL4 |
320 /* enable new powersettings */
322 out_be32(((u32 *) RPX_CSR_ADDR), in_be32(((u32 *) RPX_CSR_ADDR)) | reg);
327 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
328 #define hardware_enable(_slot_) /* No hardware to enable */
329 #define hardware_disable(_slot_) /* No hardware to disable */
331 #endif /* CONFIG_RPXCLASSIC */
333 /* FADS Boards from Motorola */
335 #if defined(CONFIG_FADS)
337 #define PCMCIA_BOARD_MSG "FADS"
339 static int voltage_set(int slot, int vcc, int vpp)
347 reg |= BCSR1_PCCVCC0;
350 reg |= BCSR1_PCCVCC1;
362 reg |= BCSR1_PCCVPP1;
367 if ((vcc == 33) || (vcc == 50))
368 reg |= BCSR1_PCCVPP0;
375 /* first, turn off all power */
376 out_be32((u32 *) BCSR1,
377 in_be32((u32 *) BCSR1) & ~(BCSR1_PCCVCC_MASK |
380 /* enable new powersettings */
381 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | reg);
386 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
388 static void hardware_enable(int slot)
390 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) & ~BCSR1_PCCEN);
393 static void hardware_disable(int slot)
395 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | BCSR1_PCCEN);
400 /* MPC885ADS Boards */
402 #if defined(CONFIG_MPC885ADS)
404 #define PCMCIA_BOARD_MSG "MPC885ADS"
405 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
407 static inline void hardware_enable(int slot)
409 m8xx_pcmcia_ops.hw_ctrl(slot, 1);
412 static inline void hardware_disable(int slot)
414 m8xx_pcmcia_ops.hw_ctrl(slot, 0);
417 static inline int voltage_set(int slot, int vcc, int vpp)
419 return m8xx_pcmcia_ops.voltage_set(slot, vcc, vpp);
424 /* ------------------------------------------------------------------------- */
425 /* Motorola MBX860 */
427 #if defined(CONFIG_MBX)
429 #define PCMCIA_BOARD_MSG "MBX"
431 static int voltage_set(int slot, int vcc, int vpp)
459 if ((vcc == 33) || (vcc == 50))
467 /* first, turn off all power */
468 out_8((u8 *) MBX_CSR2_ADDR,
469 in_8((u8 *) MBX_CSR2_ADDR) & ~(CSR2_VCC_MASK | CSR2_VPP_MASK));
471 /* enable new powersettings */
472 out_8((u8 *) MBX_CSR2_ADDR, in_8((u8 *) MBX_CSR2_ADDR) | reg);
477 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
478 #define hardware_enable(_slot_) /* No hardware to enable */
479 #define hardware_disable(_slot_) /* No hardware to disable */
481 #endif /* CONFIG_MBX */
483 #if defined(CONFIG_PRxK)
484 #include <asm/cpld.h>
485 extern volatile fpga_pc_regs *fpga_pc;
487 #define PCMCIA_BOARD_MSG "MPC855T"
489 static int voltage_set(int slot, int vcc, int vpp)
493 cpld_regs *ccpld = get_cpld();
499 reg |= PCMCIA_VCC_33;
502 reg |= PCMCIA_VCC_50;
514 reg |= PCMCIA_VPP_VCC;
519 if ((vcc == 33) || (vcc == 50))
520 reg |= PCMCIA_VPP_12;
527 reg = reg >> (slot << 2);
528 regread = in_8(&ccpld->fpga_pc_ctl);
530 (regread & ((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)))) {
531 /* enable new powersettings */
533 regread & ~((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >>
535 out_8(&ccpld->fpga_pc_ctl, reg | regread);
542 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_LV
543 #define hardware_enable(_slot_) /* No hardware to enable */
544 #define hardware_disable(_slot_) /* No hardware to disable */
546 #endif /* CONFIG_PRxK */
548 static u32 pending_events[PCMCIA_SOCKETS_NO];
549 static DEFINE_SPINLOCK(pending_event_lock);
551 static irqreturn_t m8xx_interrupt(int irq, void *dev)
553 struct socket_info *s;
554 struct event_table *e;
555 unsigned int i, events, pscr, pipr, per;
556 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
558 pr_debug("m8xx_pcmcia: Interrupt!\n");
559 /* get interrupt sources */
561 pscr = in_be32(&pcmcia->pcmc_pscr);
562 pipr = in_be32(&pcmcia->pcmc_pipr);
563 per = in_be32(&pcmcia->pcmc_per);
565 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
571 if (pscr & e->regbit)
572 events |= e->eventbit;
578 * report only if both card detect signals are the same
580 * we depend on that CD2 is the bit to the left of CD1...
582 if (events & SS_DETECT)
583 if (((pipr & M8XX_PCMCIA_CD2(i)) >> 1) ^
584 (pipr & M8XX_PCMCIA_CD1(i))) {
585 events &= ~SS_DETECT;
587 #ifdef PCMCIA_GLITCHY_CD
589 * I've experienced CD problems with my ADS board.
590 * We make an extra check to see if there was a
591 * real change of Card detection.
594 if ((events & SS_DETECT) &&
596 (M8XX_PCMCIA_CD2(i) | M8XX_PCMCIA_CD1(i))) == 0) &&
597 (s->state.Vcc | s->state.Vpp)) {
598 events &= ~SS_DETECT;
599 /*printk( "CD glitch workaround - CD = 0x%08x!\n",
600 (pipr & (M8XX_PCMCIA_CD2(i)
601 | M8XX_PCMCIA_CD1(i)))); */
605 /* call the handler */
607 pr_debug("m8xx_pcmcia: slot %u: events = 0x%02x, pscr = 0x%08x, "
608 "pipr = 0x%08x\n", i, events, pscr, pipr);
611 spin_lock(&pending_event_lock);
612 pending_events[i] |= events;
613 spin_unlock(&pending_event_lock);
615 * Turn off RDY_L bits in the PER mask on
616 * CD interrupt receival.
618 * They can generate bad interrupts on the
619 * ACS4,8,16,32. - marcelo
621 per &= ~M8XX_PCMCIA_RDY_L(0);
622 per &= ~M8XX_PCMCIA_RDY_L(1);
624 out_be32(&pcmcia->pcmc_per, per);
627 pcmcia_parse_events(&socket[i].socket, events);
631 /* clear the interrupt sources */
632 out_be32(&pcmcia->pcmc_pscr, pscr);
634 pr_debug("m8xx_pcmcia: Interrupt done.\n");
639 static u32 m8xx_get_graycode(u32 size)
643 for (k = 0; k < M8XX_SIZES_NO; k++)
644 if (m8xx_size_to_gray[k] == size)
647 if ((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
653 static u32 m8xx_get_speed(u32 ns, u32 is_io, u32 bus_freq)
655 u32 reg, clocks, psst, psl, psht;
660 * We get called with IO maps setup to 0ns
661 * if not specified by the user.
662 * They should be 255ns.
668 ns = 100; /* fast memory if 0 */
672 * In PSST, PSL, PSHT fields we tell the controller
673 * timing parameters in CLKOUT clock cycles.
674 * CLKOUT is the same as GCLK2_50.
677 /* how we want to adjust the timing - in percent */
679 #define ADJ 180 /* 80 % longer accesstime - to be sure */
681 clocks = ((bus_freq / 1000) * ns) / 1000;
682 clocks = (clocks * ADJ) / (100 * 1000);
683 if (clocks >= PCMCIA_BMT_LIMIT) {
684 printk("Max access time limit reached\n");
685 clocks = PCMCIA_BMT_LIMIT - 1;
688 psst = clocks / 7; /* setup time */
689 psht = clocks / 7; /* hold time */
690 psl = (clocks * 5) / 7; /* strobe length */
692 psst += clocks - (psst + psht + psl);
701 static int m8xx_get_status(struct pcmcia_socket *sock, unsigned int *value)
703 int lsock = container_of(sock, struct socket_info, socket)->slot;
704 struct socket_info *s = &socket[lsock];
705 unsigned int pipr, reg;
706 pcmconf8xx_t *pcmcia = s->pcmcia;
708 pipr = in_be32(&pcmcia->pcmc_pipr);
710 *value = ((pipr & (M8XX_PCMCIA_CD1(lsock)
711 | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0;
712 *value |= (pipr & M8XX_PCMCIA_WP(lsock)) ? SS_WRPROT : 0;
714 if (s->state.flags & SS_IOCARD)
715 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_STSCHG : 0;
717 *value |= (pipr & M8XX_PCMCIA_RDY(lsock)) ? SS_READY : 0;
718 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_BATDEAD : 0;
719 *value |= (pipr & M8XX_PCMCIA_BVD2(lsock)) ? SS_BATWARN : 0;
722 if (s->state.Vcc | s->state.Vpp)
723 *value |= SS_POWERON;
727 * This driver only supports 16-Bit pc-cards.
728 * Cardbus is not handled here.
730 * To determine what voltage to use we must read the VS1 and VS2 pin.
731 * Depending on what socket type is present,
732 * different combinations mean different things.
734 * Card Key Socket Key VS1 VS2 Card Vcc for CIS parse
736 * 5V 5V, LV* NC NC 5V only 5V (if available)
738 * 5V 5V, LV* GND NC 5 or 3.3V as low as possible
740 * 5V 5V, LV* GND GND 5, 3.3, x.xV as low as possible
742 * LV* 5V - - shall not fit into socket
744 * LV* LV* GND NC 3.3V only 3.3V
746 * LV* LV* NC GND x.xV x.xV (if avail.)
748 * LV* LV* GND GND 3.3 or x.xV as low as possible
750 * *LV means Low Voltage
753 * That gives us the following table:
755 * Socket VS1 VS2 Voltage
758 * 5V NC GND none (should not be possible)
762 * LV NC NC 5V (if available)
763 * LV NC GND x.xV (if available)
767 * So, how do I determine if I have a 5V or a LV
768 * socket on my board? Look at the socket!
771 * Socket with 5V key:
772 * ++--------------------------------------------+
777 * +---------------------------------------------+
779 * Socket with LV key:
780 * ++--------------------------------------------+
785 * +---------------------------------------------+
788 * With other words - LV only cards does not fit
789 * into the 5V socket!
792 /* read out VS1 and VS2 */
794 reg = (pipr & M8XX_PCMCIA_VS_MASK(lsock))
795 >> M8XX_PCMCIA_VS_SHIFT(lsock);
797 if (socket_get(lsock) == PCMCIA_SOCKET_KEY_LV) {
801 break; /* GND, NC - 3.3V only */
804 break; /* NC. GND - x.xV only */
808 pr_debug("m8xx_pcmcia: GetStatus(%d) = %#2.2x\n", lsock, *value);
812 static int m8xx_set_socket(struct pcmcia_socket *sock, socket_state_t * state)
814 int lsock = container_of(sock, struct socket_info, socket)->slot;
815 struct socket_info *s = &socket[lsock];
816 struct event_table *e;
819 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
821 pr_debug("m8xx_pcmcia: SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
822 "io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags,
823 state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
825 /* First, set voltage - bail out if invalid */
826 if (voltage_set(lsock, state->Vcc, state->Vpp))
829 /* Take care of reset... */
830 if (state->flags & SS_RESET)
831 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXRESET); /* active high */
833 out_be32(M8XX_PGCRX(lsock),
834 in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXRESET);
836 /* ... and output enable. */
838 /* The CxOE signal is connected to a 74541 on the ADS.
839 I guess most other boards used the ADS as a reference.
840 I tried to control the CxOE signal with SS_OUTPUT_ENA,
841 but the reset signal seems connected via the 541.
842 If the CxOE is left high are some signals tristated and
843 no pullups are present -> the cards act weird.
844 So right now the buffers are enabled if the power is on. */
846 if (state->Vcc || state->Vpp)
847 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXOE); /* active low */
849 out_be32(M8XX_PGCRX(lsock),
850 in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXOE);
853 * We'd better turn off interrupts before
854 * we mess with the events-table..
857 spin_lock_irqsave(&events_lock, flags);
860 * Play around with the interrupt mask to be able to
861 * give the events the generic pcmcia driver wants us to.
867 if (state->csc_mask & SS_DETECT) {
868 e->eventbit = SS_DETECT;
869 reg |= e->regbit = (M8XX_PCMCIA_CD2(lsock)
870 | M8XX_PCMCIA_CD1(lsock));
873 if (state->flags & SS_IOCARD) {
877 if (state->csc_mask & SS_STSCHG) {
878 e->eventbit = SS_STSCHG;
879 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
883 * If io_irq is non-zero we should enable irq.
886 out_be32(M8XX_PGCRX(lsock),
887 in_be32(M8XX_PGCRX(lsock)) |
888 mk_int_int_mask(s->hwirq) << 24);
890 * Strange thing here:
891 * The manual does not tell us which interrupt
892 * the sources generate.
893 * Anyhow, I found out that RDY_L generates IREQLVL.
895 * We use level triggerd interrupts, and they don't
896 * have to be cleared in PSCR in the interrupt handler.
898 reg |= M8XX_PCMCIA_RDY_L(lsock);
900 out_be32(M8XX_PGCRX(lsock),
901 in_be32(M8XX_PGCRX(lsock)) & 0x00ffffff);
906 if (state->csc_mask & SS_BATDEAD) {
907 e->eventbit = SS_BATDEAD;
908 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
911 if (state->csc_mask & SS_BATWARN) {
912 e->eventbit = SS_BATWARN;
913 reg |= e->regbit = M8XX_PCMCIA_BVD2(lsock);
916 /* What should I trigger on - low/high,raise,fall? */
917 if (state->csc_mask & SS_READY) {
918 e->eventbit = SS_READY;
919 reg |= e->regbit = 0; //??
924 e->regbit = 0; /* terminate list */
927 * Clear the status changed .
928 * Port A and Port B share the same port.
929 * Writing ones will clear the bits.
932 out_be32(&pcmcia->pcmc_pscr, reg);
936 * Port A and Port B share the same port.
937 * Need for read-modify-write.
938 * Ones will enable the interrupt.
943 pcmc_per) & (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
944 out_be32(&pcmcia->pcmc_per, reg);
946 spin_unlock_irqrestore(&events_lock, flags);
948 /* copy the struct and modify the copy */
955 static int m8xx_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
957 int lsock = container_of(sock, struct socket_info, socket)->slot;
959 struct socket_info *s = &socket[lsock];
960 struct pcmcia_win *w;
961 unsigned int reg, winnr;
962 pcmconf8xx_t *pcmcia = s->pcmcia;
964 #define M8XX_SIZE (io->stop - io->start + 1)
965 #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)
967 pr_debug("m8xx_pcmcia: SetIOMap(%d, %d, %#2.2x, %d ns, "
968 "%#4.4llx-%#4.4llx)\n", lsock, io->map, io->flags,
969 io->speed, (unsigned long long)io->start,
970 (unsigned long long)io->stop);
972 if ((io->map >= PCMCIA_IO_WIN_NO) || (io->start > 0xffff)
973 || (io->stop > 0xffff) || (io->stop < io->start))
976 if ((reg = m8xx_get_graycode(M8XX_SIZE)) == -1)
979 if (io->flags & MAP_ACTIVE) {
981 pr_debug("m8xx_pcmcia: io->flags & MAP_ACTIVE\n");
983 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
984 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
986 /* setup registers */
988 w = (void *)&pcmcia->pcmc_pbr0;
991 out_be32(&w->or, 0); /* turn off window first */
992 out_be32(&w->br, M8XX_BASE);
995 reg |= M8XX_PCMCIA_POR_IO | (lsock << 2);
997 reg |= m8xx_get_speed(io->speed, 1, s->bus_freq);
999 if (io->flags & MAP_WRPROT)
1000 reg |= M8XX_PCMCIA_POR_WRPROT;
1002 /*if(io->flags & (MAP_16BIT | MAP_AUTOSZ)) */
1003 if (io->flags & MAP_16BIT)
1004 reg |= M8XX_PCMCIA_POR_16BIT;
1006 if (io->flags & MAP_ACTIVE)
1007 reg |= M8XX_PCMCIA_POR_VALID;
1009 out_be32(&w->or, reg);
1011 pr_debug("m8xx_pcmcia: Socket %u: Mapped io window %u at "
1012 "%#8.8x, OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1014 /* shutdown IO window */
1015 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
1016 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
1018 /* setup registers */
1020 w = (void *)&pcmcia->pcmc_pbr0;
1023 out_be32(&w->or, 0); /* turn off window */
1024 out_be32(&w->br, 0); /* turn off base address */
1026 pr_debug("m8xx_pcmcia: Socket %u: Unmapped io window %u at "
1027 "%#8.8x, OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1030 /* copy the struct and modify the copy */
1031 s->io_win[io->map] = *io;
1032 s->io_win[io->map].flags &= (MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
1033 pr_debug("m8xx_pcmcia: SetIOMap exit\n");
1038 static int m8xx_set_mem_map(struct pcmcia_socket *sock,
1039 struct pccard_mem_map *mem)
1041 int lsock = container_of(sock, struct socket_info, socket)->slot;
1042 struct socket_info *s = &socket[lsock];
1043 struct pcmcia_win *w;
1044 struct pccard_mem_map *old;
1045 unsigned int reg, winnr;
1046 pcmconf8xx_t *pcmcia = s->pcmcia;
1048 pr_debug("m8xx_pcmcia: SetMemMap(%d, %d, %#2.2x, %d ns, "
1049 "%#5.5llx, %#5.5x)\n", lsock, mem->map, mem->flags,
1050 mem->speed, (unsigned long long)mem->static_start,
1053 if ((mem->map >= PCMCIA_MEM_WIN_NO)
1054 // || ((mem->s) >= PCMCIA_MEM_WIN_SIZE)
1055 || (mem->card_start >= 0x04000000)
1056 || (mem->static_start & 0xfff) /* 4KByte resolution */
1057 ||(mem->card_start & 0xfff))
1060 if ((reg = m8xx_get_graycode(PCMCIA_MEM_WIN_SIZE)) == -1) {
1061 printk("Cannot set size to 0x%08x.\n", PCMCIA_MEM_WIN_SIZE);
1066 winnr = (lsock * PCMCIA_MEM_WIN_NO) + mem->map;
1068 /* Setup the window in the pcmcia controller */
1070 w = (void *)&pcmcia->pcmc_pbr0;
1075 reg |= m8xx_get_speed(mem->speed, 0, s->bus_freq);
1077 if (mem->flags & MAP_ATTRIB)
1078 reg |= M8XX_PCMCIA_POR_ATTRMEM;
1080 if (mem->flags & MAP_WRPROT)
1081 reg |= M8XX_PCMCIA_POR_WRPROT;
1083 if (mem->flags & MAP_16BIT)
1084 reg |= M8XX_PCMCIA_POR_16BIT;
1086 if (mem->flags & MAP_ACTIVE)
1087 reg |= M8XX_PCMCIA_POR_VALID;
1089 out_be32(&w->or, reg);
1091 pr_debug("m8xx_pcmcia: Socket %u: Mapped memory window %u at %#8.8x, "
1092 "OR = %#8.8x.\n", lsock, mem->map, w->br, w->or);
1094 if (mem->flags & MAP_ACTIVE) {
1095 /* get the new base address */
1096 mem->static_start = PCMCIA_MEM_WIN_BASE +
1097 (PCMCIA_MEM_WIN_SIZE * winnr)
1101 pr_debug("m8xx_pcmcia: SetMemMap(%d, %d, %#2.2x, %d ns, "
1102 "%#5.5llx, %#5.5x)\n", lsock, mem->map, mem->flags,
1103 mem->speed, (unsigned long long)mem->static_start,
1106 /* copy the struct and modify the copy */
1108 old = &s->mem_win[mem->map];
1111 old->flags &= (MAP_ATTRIB | MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
1116 static int m8xx_sock_init(struct pcmcia_socket *sock)
1119 pccard_io_map io = { 0, 0, 0, 0, 1 };
1120 pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
1122 pr_debug("m8xx_pcmcia: sock_init(%d)\n", s);
1124 m8xx_set_socket(sock, &dead_socket);
1125 for (i = 0; i < PCMCIA_IO_WIN_NO; i++) {
1127 m8xx_set_io_map(sock, &io);
1129 for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) {
1131 m8xx_set_mem_map(sock, &mem);
1138 static int m8xx_sock_suspend(struct pcmcia_socket *sock)
1140 return m8xx_set_socket(sock, &dead_socket);
1143 static struct pccard_operations m8xx_services = {
1144 .init = m8xx_sock_init,
1145 .suspend = m8xx_sock_suspend,
1146 .get_status = m8xx_get_status,
1147 .set_socket = m8xx_set_socket,
1148 .set_io_map = m8xx_set_io_map,
1149 .set_mem_map = m8xx_set_mem_map,
1152 static int __init m8xx_probe(struct platform_device *ofdev,
1153 const struct of_device_id *match)
1155 struct pcmcia_win *w;
1156 unsigned int i, m, hwirq;
1157 pcmconf8xx_t *pcmcia;
1159 struct device_node *np = ofdev->dev.of_node;
1161 pcmcia_info("%s\n", version);
1163 pcmcia = of_iomap(np, 0);
1167 pcmcia_schlvl = irq_of_parse_and_map(np, 0);
1168 hwirq = irq_map[pcmcia_schlvl].hwirq;
1169 if (pcmcia_schlvl < 0) {
1174 m8xx_pgcrx[0] = &pcmcia->pcmc_pgcra;
1175 m8xx_pgcrx[1] = &pcmcia->pcmc_pgcrb;
1177 pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG
1178 " with IRQ %u (%d). \n", pcmcia_schlvl, hwirq);
1180 /* Configure Status change interrupt */
1182 if (request_irq(pcmcia_schlvl, m8xx_interrupt, IRQF_SHARED,
1183 driver_name, socket)) {
1184 pcmcia_error("Cannot allocate IRQ %u for SCHLVL!\n",
1190 w = (void *)&pcmcia->pcmc_pbr0;
1192 out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1193 clrbits32(&pcmcia->pcmc_per, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1195 /* connect interrupt and disable CxOE */
1197 out_be32(M8XX_PGCRX(0),
1198 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
1199 out_be32(M8XX_PGCRX(1),
1200 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
1202 /* intialize the fixed memory windows */
1204 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1205 for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1206 out_be32(&w->br, PCMCIA_MEM_WIN_BASE +
1207 (PCMCIA_MEM_WIN_SIZE
1208 * (m + i * PCMCIA_MEM_WIN_NO)));
1210 out_be32(&w->or, 0); /* set to not valid */
1216 /* turn off voltage */
1217 voltage_set(0, 0, 0);
1218 voltage_set(1, 0, 0);
1220 /* Enable external hardware */
1224 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1226 socket[i].socket.owner = THIS_MODULE;
1227 socket[i].socket.features =
1228 SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP;
1229 socket[i].socket.irq_mask = 0x000;
1230 socket[i].socket.map_size = 0x1000;
1231 socket[i].socket.io_offset = 0;
1232 socket[i].socket.pci_irq = pcmcia_schlvl;
1233 socket[i].socket.ops = &m8xx_services;
1234 socket[i].socket.resource_ops = &pccard_iodyn_ops;
1235 socket[i].socket.cb_dev = NULL;
1236 socket[i].socket.dev.parent = &ofdev->dev;
1237 socket[i].pcmcia = pcmcia;
1238 socket[i].bus_freq = ppc_proc_freq;
1239 socket[i].hwirq = hwirq;
1243 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1244 status = pcmcia_register_socket(&socket[i].socket);
1246 pcmcia_error("Socket register failed\n");
1252 static int m8xx_remove(struct platform_device *ofdev)
1255 struct pcmcia_win *w;
1256 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
1258 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1259 w = (void *)&pcmcia->pcmc_pbr0;
1261 out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(i));
1262 out_be32(&pcmcia->pcmc_per,
1263 in_be32(&pcmcia->pcmc_per) & ~M8XX_PCMCIA_MASK(i));
1265 /* turn off interrupt and disable CxOE */
1266 out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);
1268 /* turn off memory windows */
1269 for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1270 out_be32(&w->or, 0); /* set to not valid */
1274 /* turn off voltage */
1275 voltage_set(i, 0, 0);
1277 /* disable external hardware */
1278 hardware_disable(i);
1280 for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
1281 pcmcia_unregister_socket(&socket[i].socket);
1284 free_irq(pcmcia_schlvl, NULL);
1289 static const struct of_device_id m8xx_pcmcia_match[] = {
1292 .compatible = "fsl,pq-pcmcia",
1297 MODULE_DEVICE_TABLE(of, m8xx_pcmcia_match);
1299 static struct of_platform_driver m8xx_pcmcia_driver = {
1301 .name = driver_name,
1302 .owner = THIS_MODULE,
1303 .of_match_table = m8xx_pcmcia_match,
1305 .probe = m8xx_probe,
1306 .remove = m8xx_remove,
1309 static int __init m8xx_init(void)
1311 return of_register_platform_driver(&m8xx_pcmcia_driver);
1314 static void __exit m8xx_exit(void)
1316 of_unregister_platform_driver(&m8xx_pcmcia_driver);
1319 module_init(m8xx_init);
1320 module_exit(m8xx_exit);