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) 2005-2007 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/slab.h>
46 #include <linux/timer.h>
47 #include <linux/ioport.h>
48 #include <linux/delay.h>
49 #include <linux/interrupt.h>
50 #include <linux/fsl_devices.h>
51 #include <linux/bitops.h>
52 #include <linux/of_device.h>
53 #include <linux/of_platform.h>
56 #include <asm/system.h>
58 #include <asm/mpc8xx.h>
59 #include <asm/8xx_immap.h>
61 #include <asm/fs_pd.h>
63 #include <pcmcia/version.h>
64 #include <pcmcia/cs_types.h>
65 #include <pcmcia/cs.h>
66 #include <pcmcia/ss.h>
69 static int pc_debug = PCMCIA_DEBUG;
70 module_param(pc_debug, int, 0);
71 #define dprintk(args...) printk(KERN_DEBUG "m8xx_pcmcia: " args);
73 #define dprintk(args...)
76 #define pcmcia_info(args...) printk(KERN_INFO "m8xx_pcmcia: "args)
77 #define pcmcia_error(args...) printk(KERN_ERR "m8xx_pcmcia: "args)
79 static const char *version = "Version 0.06, Aug 2005";
80 MODULE_LICENSE("Dual MPL/GPL");
82 #if !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B)
84 /* The RPX series use SLOT_B */
85 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
86 #define CONFIG_PCMCIA_SLOT_B
87 #define CONFIG_BD_IS_MHZ
90 /* The ADS board use SLOT_A */
92 #define CONFIG_PCMCIA_SLOT_A
93 #define CONFIG_BD_IS_MHZ
96 /* The FADS series are a mess */
98 #if defined(CONFIG_MPC860T) || defined(CONFIG_MPC860) || defined(CONFIG_MPC821)
99 #define CONFIG_PCMCIA_SLOT_A
101 #define CONFIG_PCMCIA_SLOT_B
105 #if defined(CONFIG_MPC885ADS)
106 #define CONFIG_PCMCIA_SLOT_A
107 #define PCMCIA_GLITCHY_CD
110 /* Cyclades ACS uses both slots */
112 #define CONFIG_PCMCIA_SLOT_A
113 #define CONFIG_PCMCIA_SLOT_B
116 #endif /* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */
118 #if defined(CONFIG_PCMCIA_SLOT_A) && defined(CONFIG_PCMCIA_SLOT_B)
120 #define PCMCIA_SOCKETS_NO 2
121 /* We have only 8 windows, dualsocket support will be limited. */
122 #define PCMCIA_MEM_WIN_NO 2
123 #define PCMCIA_IO_WIN_NO 2
124 #define PCMCIA_SLOT_MSG "SLOT_A and SLOT_B"
126 #elif defined(CONFIG_PCMCIA_SLOT_A) || defined(CONFIG_PCMCIA_SLOT_B)
128 #define PCMCIA_SOCKETS_NO 1
129 /* full support for one slot */
130 #define PCMCIA_MEM_WIN_NO 5
131 #define PCMCIA_IO_WIN_NO 2
133 /* define _slot_ to be able to optimize macros */
135 #ifdef CONFIG_PCMCIA_SLOT_A
137 #define PCMCIA_SLOT_MSG "SLOT_A"
140 #define PCMCIA_SLOT_MSG "SLOT_B"
144 #error m8xx_pcmcia: Bad configuration!
147 /* ------------------------------------------------------------------------- */
149 #define PCMCIA_MEM_WIN_BASE 0xe0000000 /* base address for memory window 0 */
150 #define PCMCIA_MEM_WIN_SIZE 0x04000000 /* each memory window is 64 MByte */
151 #define PCMCIA_IO_WIN_BASE _IO_BASE /* base address for io window 0 */
152 /* ------------------------------------------------------------------------- */
154 static int pcmcia_schlvl;
156 static DEFINE_SPINLOCK(events_lock);
158 #define PCMCIA_SOCKET_KEY_5V 1
159 #define PCMCIA_SOCKET_KEY_LV 2
161 /* look up table for pgcrx registers */
162 static u32 *m8xx_pgcrx[2];
165 * This structure is used to address each window in the PCMCIA controller.
167 * Keep in mind that we assume that pcmcia_win[n+1] is mapped directly
168 * after pcmcia_win[n]...
177 * For some reason the hardware guys decided to make both slots share
180 * Could someone invent object oriented hardware ?
182 * The macros are used to get the right bit from the registers.
187 #define M8XX_PCMCIA_VS1(slot) (0x80000000 >> (slot << 4))
188 #define M8XX_PCMCIA_VS2(slot) (0x40000000 >> (slot << 4))
189 #define M8XX_PCMCIA_VS_MASK(slot) (0xc0000000 >> (slot << 4))
190 #define M8XX_PCMCIA_VS_SHIFT(slot) (30 - (slot << 4))
192 #define M8XX_PCMCIA_WP(slot) (0x20000000 >> (slot << 4))
193 #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
194 #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
195 #define M8XX_PCMCIA_BVD2(slot) (0x04000000 >> (slot << 4))
196 #define M8XX_PCMCIA_BVD1(slot) (0x02000000 >> (slot << 4))
197 #define M8XX_PCMCIA_RDY(slot) (0x01000000 >> (slot << 4))
198 #define M8XX_PCMCIA_RDY_L(slot) (0x00800000 >> (slot << 4))
199 #define M8XX_PCMCIA_RDY_H(slot) (0x00400000 >> (slot << 4))
200 #define M8XX_PCMCIA_RDY_R(slot) (0x00200000 >> (slot << 4))
201 #define M8XX_PCMCIA_RDY_F(slot) (0x00100000 >> (slot << 4))
202 #define M8XX_PCMCIA_MASK(slot) (0xFFFF0000 >> (slot << 4))
204 #define M8XX_PCMCIA_POR_VALID 0x00000001
205 #define M8XX_PCMCIA_POR_WRPROT 0x00000002
206 #define M8XX_PCMCIA_POR_ATTRMEM 0x00000010
207 #define M8XX_PCMCIA_POR_IO 0x00000018
208 #define M8XX_PCMCIA_POR_16BIT 0x00000040
210 #define M8XX_PGCRX(slot) m8xx_pgcrx[slot]
212 #define M8XX_PGCRX_CXOE 0x00000080
213 #define M8XX_PGCRX_CXRESET 0x00000040
215 /* we keep one lookup table per socket to check flags */
217 #define PCMCIA_EVENTS_MAX 5 /* 4 max at a time + termination */
224 static const char driver_name[] = "m8xx-pcmcia";
227 void (*handler) (void *info, u32 events);
231 pcmconf8xx_t *pcmcia;
235 socket_state_t state;
236 struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO];
237 struct pccard_io_map io_win[PCMCIA_IO_WIN_NO];
238 struct event_table events[PCMCIA_EVENTS_MAX];
239 struct pcmcia_socket socket;
242 static struct socket_info socket[PCMCIA_SOCKETS_NO];
245 * Search this table to see if the windowsize is
249 #define M8XX_SIZES_NO 32
251 static const u32 m8xx_size_to_gray[M8XX_SIZES_NO] = {
252 0x00000001, 0x00000002, 0x00000008, 0x00000004,
253 0x00000080, 0x00000040, 0x00000010, 0x00000020,
254 0x00008000, 0x00004000, 0x00001000, 0x00002000,
255 0x00000100, 0x00000200, 0x00000800, 0x00000400,
257 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
258 0x01000000, 0x02000000, 0xffffffff, 0x04000000,
259 0x00010000, 0x00020000, 0x00080000, 0x00040000,
260 0x00800000, 0x00400000, 0x00100000, 0x00200000
263 /* ------------------------------------------------------------------------- */
265 static irqreturn_t m8xx_interrupt(int irq, void *dev);
267 #define PCMCIA_BMT_LIMIT (15*4) /* Bus Monitor Timeout value */
269 /* ------------------------------------------------------------------------- */
270 /* board specific stuff: */
271 /* voltage_set(), hardware_enable() and hardware_disable() */
272 /* ------------------------------------------------------------------------- */
273 /* RPX Boards from Embedded Planet */
275 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
277 /* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks.
278 * SYPCR is write once only, therefore must the slowest memory be faster
279 * than the bus monitor or we will get a machine check due to the bus timeout.
282 #define PCMCIA_BOARD_MSG "RPX CLASSIC or RPX LITE"
284 #undef PCMCIA_BMT_LIMIT
285 #define PCMCIA_BMT_LIMIT (6*8)
287 static int voltage_set(int slot, int vcc, int vpp)
295 reg |= BCSR1_PCVCTL4;
298 reg |= BCSR1_PCVCTL5;
310 reg |= BCSR1_PCVCTL6;
315 reg |= BCSR1_PCVCTL7;
320 if (!((vcc == 50) || (vcc == 0)))
323 /* first, turn off all power */
325 out_be32(((u32 *) RPX_CSR_ADDR),
326 in_be32(((u32 *) RPX_CSR_ADDR)) & ~(BCSR1_PCVCTL4 |
331 /* enable new powersettings */
333 out_be32(((u32 *) RPX_CSR_ADDR), in_be32(((u32 *) RPX_CSR_ADDR)) | reg);
338 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
339 #define hardware_enable(_slot_) /* No hardware to enable */
340 #define hardware_disable(_slot_) /* No hardware to disable */
342 #endif /* CONFIG_RPXCLASSIC */
344 /* FADS Boards from Motorola */
346 #if defined(CONFIG_FADS)
348 #define PCMCIA_BOARD_MSG "FADS"
350 static int voltage_set(int slot, int vcc, int vpp)
358 reg |= BCSR1_PCCVCC0;
361 reg |= BCSR1_PCCVCC1;
373 reg |= BCSR1_PCCVPP1;
378 if ((vcc == 33) || (vcc == 50))
379 reg |= BCSR1_PCCVPP0;
386 /* first, turn off all power */
387 out_be32((u32 *) BCSR1,
388 in_be32((u32 *) BCSR1) & ~(BCSR1_PCCVCC_MASK |
391 /* enable new powersettings */
392 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | reg);
397 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
399 static void hardware_enable(int slot)
401 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) & ~BCSR1_PCCEN);
404 static void hardware_disable(int slot)
406 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | BCSR1_PCCEN);
411 /* MPC885ADS Boards */
413 #if defined(CONFIG_MPC885ADS)
415 #define PCMCIA_BOARD_MSG "MPC885ADS"
416 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
418 static inline void hardware_enable(int slot)
420 m8xx_pcmcia_ops.hw_ctrl(slot, 1);
423 static inline void hardware_disable(int slot)
425 m8xx_pcmcia_ops.hw_ctrl(slot, 0);
428 static inline int voltage_set(int slot, int vcc, int vpp)
430 return m8xx_pcmcia_ops.voltage_set(slot, vcc, vpp);
435 /* ------------------------------------------------------------------------- */
436 /* Motorola MBX860 */
438 #if defined(CONFIG_MBX)
440 #define PCMCIA_BOARD_MSG "MBX"
442 static int voltage_set(int slot, int vcc, int vpp)
470 if ((vcc == 33) || (vcc == 50))
478 /* first, turn off all power */
479 out_8((u8 *) MBX_CSR2_ADDR,
480 in_8((u8 *) MBX_CSR2_ADDR) & ~(CSR2_VCC_MASK | CSR2_VPP_MASK));
482 /* enable new powersettings */
483 out_8((u8 *) MBX_CSR2_ADDR, in_8((u8 *) MBX_CSR2_ADDR) | reg);
488 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
489 #define hardware_enable(_slot_) /* No hardware to enable */
490 #define hardware_disable(_slot_) /* No hardware to disable */
492 #endif /* CONFIG_MBX */
494 #if defined(CONFIG_PRxK)
495 #include <asm/cpld.h>
496 extern volatile fpga_pc_regs *fpga_pc;
498 #define PCMCIA_BOARD_MSG "MPC855T"
500 static int voltage_set(int slot, int vcc, int vpp)
504 cpld_regs *ccpld = get_cpld();
510 reg |= PCMCIA_VCC_33;
513 reg |= PCMCIA_VCC_50;
525 reg |= PCMCIA_VPP_VCC;
530 if ((vcc == 33) || (vcc == 50))
531 reg |= PCMCIA_VPP_12;
538 reg = reg >> (slot << 2);
539 regread = in_8(&ccpld->fpga_pc_ctl);
541 (regread & ((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)))) {
542 /* enable new powersettings */
544 regread & ~((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >>
546 out_8(&ccpld->fpga_pc_ctl, reg | regread);
553 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_LV
554 #define hardware_enable(_slot_) /* No hardware to enable */
555 #define hardware_disable(_slot_) /* No hardware to disable */
557 #endif /* CONFIG_PRxK */
559 static u32 pending_events[PCMCIA_SOCKETS_NO];
560 static DEFINE_SPINLOCK(pending_event_lock);
562 static irqreturn_t m8xx_interrupt(int irq, void *dev)
564 struct socket_info *s;
565 struct event_table *e;
566 unsigned int i, events, pscr, pipr, per;
567 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
569 dprintk("Interrupt!\n");
570 /* get interrupt sources */
572 pscr = in_be32(&pcmcia->pcmc_pscr);
573 pipr = in_be32(&pcmcia->pcmc_pipr);
574 per = in_be32(&pcmcia->pcmc_per);
576 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
582 if (pscr & e->regbit)
583 events |= e->eventbit;
589 * report only if both card detect signals are the same
591 * we depend on that CD2 is the bit to the left of CD1...
593 if (events & SS_DETECT)
594 if (((pipr & M8XX_PCMCIA_CD2(i)) >> 1) ^
595 (pipr & M8XX_PCMCIA_CD1(i))) {
596 events &= ~SS_DETECT;
598 #ifdef PCMCIA_GLITCHY_CD
600 * I've experienced CD problems with my ADS board.
601 * We make an extra check to see if there was a
602 * real change of Card detection.
605 if ((events & SS_DETECT) &&
607 (M8XX_PCMCIA_CD2(i) | M8XX_PCMCIA_CD1(i))) == 0) &&
608 (s->state.Vcc | s->state.Vpp)) {
609 events &= ~SS_DETECT;
610 /*printk( "CD glitch workaround - CD = 0x%08x!\n",
611 (pipr & (M8XX_PCMCIA_CD2(i)
612 | M8XX_PCMCIA_CD1(i)))); */
616 /* call the handler */
618 dprintk("slot %u: events = 0x%02x, pscr = 0x%08x, "
619 "pipr = 0x%08x\n", i, events, pscr, pipr);
622 spin_lock(&pending_event_lock);
623 pending_events[i] |= events;
624 spin_unlock(&pending_event_lock);
626 * Turn off RDY_L bits in the PER mask on
627 * CD interrupt receival.
629 * They can generate bad interrupts on the
630 * ACS4,8,16,32. - marcelo
632 per &= ~M8XX_PCMCIA_RDY_L(0);
633 per &= ~M8XX_PCMCIA_RDY_L(1);
635 out_be32(&pcmcia->pcmc_per, per);
638 pcmcia_parse_events(&socket[i].socket, events);
642 /* clear the interrupt sources */
643 out_be32(&pcmcia->pcmc_pscr, pscr);
645 dprintk("Interrupt done.\n");
650 static u32 m8xx_get_graycode(u32 size)
654 for (k = 0; k < M8XX_SIZES_NO; k++)
655 if (m8xx_size_to_gray[k] == size)
658 if ((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
664 static u32 m8xx_get_speed(u32 ns, u32 is_io, u32 bus_freq)
666 u32 reg, clocks, psst, psl, psht;
671 * We get called with IO maps setup to 0ns
672 * if not specified by the user.
673 * They should be 255ns.
679 ns = 100; /* fast memory if 0 */
683 * In PSST, PSL, PSHT fields we tell the controller
684 * timing parameters in CLKOUT clock cycles.
685 * CLKOUT is the same as GCLK2_50.
688 /* how we want to adjust the timing - in percent */
690 #define ADJ 180 /* 80 % longer accesstime - to be sure */
692 clocks = ((bus_freq / 1000) * ns) / 1000;
693 clocks = (clocks * ADJ) / (100 * 1000);
694 if (clocks >= PCMCIA_BMT_LIMIT) {
695 printk("Max access time limit reached\n");
696 clocks = PCMCIA_BMT_LIMIT - 1;
699 psst = clocks / 7; /* setup time */
700 psht = clocks / 7; /* hold time */
701 psl = (clocks * 5) / 7; /* strobe length */
703 psst += clocks - (psst + psht + psl);
712 static int m8xx_get_status(struct pcmcia_socket *sock, unsigned int *value)
714 int lsock = container_of(sock, struct socket_info, socket)->slot;
715 struct socket_info *s = &socket[lsock];
716 unsigned int pipr, reg;
717 pcmconf8xx_t *pcmcia = s->pcmcia;
719 pipr = in_be32(&pcmcia->pcmc_pipr);
721 *value = ((pipr & (M8XX_PCMCIA_CD1(lsock)
722 | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0;
723 *value |= (pipr & M8XX_PCMCIA_WP(lsock)) ? SS_WRPROT : 0;
725 if (s->state.flags & SS_IOCARD)
726 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_STSCHG : 0;
728 *value |= (pipr & M8XX_PCMCIA_RDY(lsock)) ? SS_READY : 0;
729 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_BATDEAD : 0;
730 *value |= (pipr & M8XX_PCMCIA_BVD2(lsock)) ? SS_BATWARN : 0;
733 if (s->state.Vcc | s->state.Vpp)
734 *value |= SS_POWERON;
738 * This driver only supports 16-Bit pc-cards.
739 * Cardbus is not handled here.
741 * To determine what voltage to use we must read the VS1 and VS2 pin.
742 * Depending on what socket type is present,
743 * different combinations mean different things.
745 * Card Key Socket Key VS1 VS2 Card Vcc for CIS parse
747 * 5V 5V, LV* NC NC 5V only 5V (if available)
749 * 5V 5V, LV* GND NC 5 or 3.3V as low as possible
751 * 5V 5V, LV* GND GND 5, 3.3, x.xV as low as possible
753 * LV* 5V - - shall not fit into socket
755 * LV* LV* GND NC 3.3V only 3.3V
757 * LV* LV* NC GND x.xV x.xV (if avail.)
759 * LV* LV* GND GND 3.3 or x.xV as low as possible
761 * *LV means Low Voltage
764 * That gives us the following table:
766 * Socket VS1 VS2 Voltage
769 * 5V NC GND none (should not be possible)
773 * LV NC NC 5V (if available)
774 * LV NC GND x.xV (if available)
778 * So, how do I determine if I have a 5V or a LV
779 * socket on my board? Look at the socket!
782 * Socket with 5V key:
783 * ++--------------------------------------------+
788 * +---------------------------------------------+
790 * Socket with LV key:
791 * ++--------------------------------------------+
796 * +---------------------------------------------+
799 * With other words - LV only cards does not fit
800 * into the 5V socket!
803 /* read out VS1 and VS2 */
805 reg = (pipr & M8XX_PCMCIA_VS_MASK(lsock))
806 >> M8XX_PCMCIA_VS_SHIFT(lsock);
808 if (socket_get(lsock) == PCMCIA_SOCKET_KEY_LV) {
812 break; /* GND, NC - 3.3V only */
815 break; /* NC. GND - x.xV only */
819 dprintk("GetStatus(%d) = %#2.2x\n", lsock, *value);
823 static int m8xx_set_socket(struct pcmcia_socket *sock, socket_state_t * state)
825 int lsock = container_of(sock, struct socket_info, socket)->slot;
826 struct socket_info *s = &socket[lsock];
827 struct event_table *e;
830 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
832 dprintk("SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
833 "io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags,
834 state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
836 /* First, set voltage - bail out if invalid */
837 if (voltage_set(lsock, state->Vcc, state->Vpp))
840 /* Take care of reset... */
841 if (state->flags & SS_RESET)
842 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXRESET); /* active high */
844 out_be32(M8XX_PGCRX(lsock),
845 in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXRESET);
847 /* ... and output enable. */
849 /* The CxOE signal is connected to a 74541 on the ADS.
850 I guess most other boards used the ADS as a reference.
851 I tried to control the CxOE signal with SS_OUTPUT_ENA,
852 but the reset signal seems connected via the 541.
853 If the CxOE is left high are some signals tristated and
854 no pullups are present -> the cards act weird.
855 So right now the buffers are enabled if the power is on. */
857 if (state->Vcc || state->Vpp)
858 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXOE); /* active low */
860 out_be32(M8XX_PGCRX(lsock),
861 in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXOE);
864 * We'd better turn off interrupts before
865 * we mess with the events-table..
868 spin_lock_irqsave(&events_lock, flags);
871 * Play around with the interrupt mask to be able to
872 * give the events the generic pcmcia driver wants us to.
878 if (state->csc_mask & SS_DETECT) {
879 e->eventbit = SS_DETECT;
880 reg |= e->regbit = (M8XX_PCMCIA_CD2(lsock)
881 | M8XX_PCMCIA_CD1(lsock));
884 if (state->flags & SS_IOCARD) {
888 if (state->csc_mask & SS_STSCHG) {
889 e->eventbit = SS_STSCHG;
890 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
894 * If io_irq is non-zero we should enable irq.
897 out_be32(M8XX_PGCRX(lsock),
898 in_be32(M8XX_PGCRX(lsock)) |
899 mk_int_int_mask(s->hwirq) << 24);
901 * Strange thing here:
902 * The manual does not tell us which interrupt
903 * the sources generate.
904 * Anyhow, I found out that RDY_L generates IREQLVL.
906 * We use level triggerd interrupts, and they don't
907 * have to be cleared in PSCR in the interrupt handler.
909 reg |= M8XX_PCMCIA_RDY_L(lsock);
911 out_be32(M8XX_PGCRX(lsock),
912 in_be32(M8XX_PGCRX(lsock)) & 0x00ffffff);
917 if (state->csc_mask & SS_BATDEAD) {
918 e->eventbit = SS_BATDEAD;
919 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
922 if (state->csc_mask & SS_BATWARN) {
923 e->eventbit = SS_BATWARN;
924 reg |= e->regbit = M8XX_PCMCIA_BVD2(lsock);
927 /* What should I trigger on - low/high,raise,fall? */
928 if (state->csc_mask & SS_READY) {
929 e->eventbit = SS_READY;
930 reg |= e->regbit = 0; //??
935 e->regbit = 0; /* terminate list */
938 * Clear the status changed .
939 * Port A and Port B share the same port.
940 * Writing ones will clear the bits.
943 out_be32(&pcmcia->pcmc_pscr, reg);
947 * Port A and Port B share the same port.
948 * Need for read-modify-write.
949 * Ones will enable the interrupt.
954 pcmc_per) & (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
955 out_be32(&pcmcia->pcmc_per, reg);
957 spin_unlock_irqrestore(&events_lock, flags);
959 /* copy the struct and modify the copy */
966 static int m8xx_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
968 int lsock = container_of(sock, struct socket_info, socket)->slot;
970 struct socket_info *s = &socket[lsock];
971 struct pcmcia_win *w;
972 unsigned int reg, winnr;
973 pcmconf8xx_t *pcmcia = s->pcmcia;
975 #define M8XX_SIZE (io->stop - io->start + 1)
976 #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)
978 dprintk("SetIOMap(%d, %d, %#2.2x, %d ns, "
979 "%#4.4x-%#4.4x)\n", lsock, io->map, io->flags,
980 io->speed, io->start, io->stop);
982 if ((io->map >= PCMCIA_IO_WIN_NO) || (io->start > 0xffff)
983 || (io->stop > 0xffff) || (io->stop < io->start))
986 if ((reg = m8xx_get_graycode(M8XX_SIZE)) == -1)
989 if (io->flags & MAP_ACTIVE) {
991 dprintk("io->flags & MAP_ACTIVE\n");
993 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
994 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
996 /* setup registers */
998 w = (void *)&pcmcia->pcmc_pbr0;
1001 out_be32(&w->or, 0); /* turn off window first */
1002 out_be32(&w->br, M8XX_BASE);
1005 reg |= M8XX_PCMCIA_POR_IO | (lsock << 2);
1007 reg |= m8xx_get_speed(io->speed, 1, s->bus_freq);
1009 if (io->flags & MAP_WRPROT)
1010 reg |= M8XX_PCMCIA_POR_WRPROT;
1012 /*if(io->flags & (MAP_16BIT | MAP_AUTOSZ)) */
1013 if (io->flags & MAP_16BIT)
1014 reg |= M8XX_PCMCIA_POR_16BIT;
1016 if (io->flags & MAP_ACTIVE)
1017 reg |= M8XX_PCMCIA_POR_VALID;
1019 out_be32(&w->or, reg);
1021 dprintk("Socket %u: Mapped io window %u at %#8.8x, "
1022 "OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1024 /* shutdown IO window */
1025 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
1026 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
1028 /* setup registers */
1030 w = (void *)&pcmcia->pcmc_pbr0;
1033 out_be32(&w->or, 0); /* turn off window */
1034 out_be32(&w->br, 0); /* turn off base address */
1036 dprintk("Socket %u: Unmapped io window %u at %#8.8x, "
1037 "OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1040 /* copy the struct and modify the copy */
1041 s->io_win[io->map] = *io;
1042 s->io_win[io->map].flags &= (MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
1043 dprintk("SetIOMap exit\n");
1048 static int m8xx_set_mem_map(struct pcmcia_socket *sock,
1049 struct pccard_mem_map *mem)
1051 int lsock = container_of(sock, struct socket_info, socket)->slot;
1052 struct socket_info *s = &socket[lsock];
1053 struct pcmcia_win *w;
1054 struct pccard_mem_map *old;
1055 unsigned int reg, winnr;
1056 pcmconf8xx_t *pcmcia = s->pcmcia;
1058 dprintk("SetMemMap(%d, %d, %#2.2x, %d ns, "
1059 "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
1060 mem->speed, mem->static_start, mem->card_start);
1062 if ((mem->map >= PCMCIA_MEM_WIN_NO)
1063 // || ((mem->s) >= PCMCIA_MEM_WIN_SIZE)
1064 || (mem->card_start >= 0x04000000)
1065 || (mem->static_start & 0xfff) /* 4KByte resolution */
1066 ||(mem->card_start & 0xfff))
1069 if ((reg = m8xx_get_graycode(PCMCIA_MEM_WIN_SIZE)) == -1) {
1070 printk("Cannot set size to 0x%08x.\n", PCMCIA_MEM_WIN_SIZE);
1075 winnr = (lsock * PCMCIA_MEM_WIN_NO) + mem->map;
1077 /* Setup the window in the pcmcia controller */
1079 w = (void *)&pcmcia->pcmc_pbr0;
1084 reg |= m8xx_get_speed(mem->speed, 0, s->bus_freq);
1086 if (mem->flags & MAP_ATTRIB)
1087 reg |= M8XX_PCMCIA_POR_ATTRMEM;
1089 if (mem->flags & MAP_WRPROT)
1090 reg |= M8XX_PCMCIA_POR_WRPROT;
1092 if (mem->flags & MAP_16BIT)
1093 reg |= M8XX_PCMCIA_POR_16BIT;
1095 if (mem->flags & MAP_ACTIVE)
1096 reg |= M8XX_PCMCIA_POR_VALID;
1098 out_be32(&w->or, reg);
1100 dprintk("Socket %u: Mapped memory window %u at %#8.8x, "
1101 "OR = %#8.8x.\n", lsock, mem->map, w->br, w->or);
1103 if (mem->flags & MAP_ACTIVE) {
1104 /* get the new base address */
1105 mem->static_start = PCMCIA_MEM_WIN_BASE +
1106 (PCMCIA_MEM_WIN_SIZE * winnr)
1110 dprintk("SetMemMap(%d, %d, %#2.2x, %d ns, "
1111 "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
1112 mem->speed, mem->static_start, mem->card_start);
1114 /* copy the struct and modify the copy */
1116 old = &s->mem_win[mem->map];
1119 old->flags &= (MAP_ATTRIB | MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
1124 static int m8xx_sock_init(struct pcmcia_socket *sock)
1127 pccard_io_map io = { 0, 0, 0, 0, 1 };
1128 pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
1130 dprintk("sock_init(%d)\n", s);
1132 m8xx_set_socket(sock, &dead_socket);
1133 for (i = 0; i < PCMCIA_IO_WIN_NO; i++) {
1135 m8xx_set_io_map(sock, &io);
1137 for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) {
1139 m8xx_set_mem_map(sock, &mem);
1146 static int m8xx_sock_suspend(struct pcmcia_socket *sock)
1148 return m8xx_set_socket(sock, &dead_socket);
1151 static struct pccard_operations m8xx_services = {
1152 .init = m8xx_sock_init,
1153 .suspend = m8xx_sock_suspend,
1154 .get_status = m8xx_get_status,
1155 .set_socket = m8xx_set_socket,
1156 .set_io_map = m8xx_set_io_map,
1157 .set_mem_map = m8xx_set_mem_map,
1160 static int __init m8xx_probe(struct of_device *ofdev,
1161 const struct of_device_id *match)
1163 struct pcmcia_win *w;
1164 unsigned int i, m, hwirq;
1165 pcmconf8xx_t *pcmcia;
1167 struct device_node *np = ofdev->node;
1169 pcmcia_info("%s\n", version);
1171 pcmcia = of_iomap(np, 0);
1175 pcmcia_schlvl = irq_of_parse_and_map(np, 0);
1176 hwirq = irq_map[pcmcia_schlvl].hwirq;
1177 if (pcmcia_schlvl < 0) {
1182 m8xx_pgcrx[0] = &pcmcia->pcmc_pgcra;
1183 m8xx_pgcrx[1] = &pcmcia->pcmc_pgcrb;
1185 pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG
1186 " with IRQ %u (%d). \n", pcmcia_schlvl, hwirq);
1188 /* Configure Status change interrupt */
1190 if (request_irq(pcmcia_schlvl, m8xx_interrupt, IRQF_SHARED,
1191 driver_name, socket)) {
1192 pcmcia_error("Cannot allocate IRQ %u for SCHLVL!\n",
1198 w = (void *)&pcmcia->pcmc_pbr0;
1200 out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1201 clrbits32(&pcmcia->pcmc_per, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1203 /* connect interrupt and disable CxOE */
1205 out_be32(M8XX_PGCRX(0),
1206 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
1207 out_be32(M8XX_PGCRX(1),
1208 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
1210 /* intialize the fixed memory windows */
1212 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1213 for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1214 out_be32(&w->br, PCMCIA_MEM_WIN_BASE +
1215 (PCMCIA_MEM_WIN_SIZE
1216 * (m + i * PCMCIA_MEM_WIN_NO)));
1218 out_be32(&w->or, 0); /* set to not valid */
1224 /* turn off voltage */
1225 voltage_set(0, 0, 0);
1226 voltage_set(1, 0, 0);
1228 /* Enable external hardware */
1232 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1234 socket[i].socket.owner = THIS_MODULE;
1235 socket[i].socket.features =
1236 SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP;
1237 socket[i].socket.irq_mask = 0x000;
1238 socket[i].socket.map_size = 0x1000;
1239 socket[i].socket.io_offset = 0;
1240 socket[i].socket.pci_irq = pcmcia_schlvl;
1241 socket[i].socket.ops = &m8xx_services;
1242 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
1243 socket[i].socket.cb_dev = NULL;
1244 socket[i].socket.dev.parent = &ofdev->dev;
1245 socket[i].pcmcia = pcmcia;
1246 socket[i].bus_freq = ppc_proc_freq;
1247 socket[i].hwirq = hwirq;
1251 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1252 status = pcmcia_register_socket(&socket[i].socket);
1254 pcmcia_error("Socket register failed\n");
1260 static int m8xx_remove(struct of_device *ofdev)
1263 struct pcmcia_win *w;
1264 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
1266 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1267 w = (void *)&pcmcia->pcmc_pbr0;
1269 out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(i));
1270 out_be32(&pcmcia->pcmc_per,
1271 in_be32(&pcmcia->pcmc_per) & ~M8XX_PCMCIA_MASK(i));
1273 /* turn off interrupt and disable CxOE */
1274 out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);
1276 /* turn off memory windows */
1277 for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1278 out_be32(&w->or, 0); /* set to not valid */
1282 /* turn off voltage */
1283 voltage_set(i, 0, 0);
1285 /* disable external hardware */
1286 hardware_disable(i);
1288 for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
1289 pcmcia_unregister_socket(&socket[i].socket);
1292 free_irq(pcmcia_schlvl, NULL);
1298 static int m8xx_suspend(struct platform_device *pdev, pm_message_t state)
1300 return pcmcia_socket_dev_suspend(&pdev->dev, state);
1303 static int m8xx_resume(struct platform_device *pdev)
1305 return pcmcia_socket_dev_resume(&pdev->dev);
1308 #define m8xx_suspend NULL
1309 #define m8xx_resume NULL
1312 static struct of_device_id m8xx_pcmcia_match[] = {
1315 .compatible = "fsl,pq-pcmcia",
1320 MODULE_DEVICE_TABLE(of, m8xx_pcmcia_match);
1322 static struct of_platform_driver m8xx_pcmcia_driver = {
1323 .name = driver_name,
1324 .match_table = m8xx_pcmcia_match,
1325 .probe = m8xx_probe,
1326 .remove = m8xx_remove,
1327 .suspend = m8xx_suspend,
1328 .resume = m8xx_resume,
1331 static int __init m8xx_init(void)
1333 return of_register_platform_driver(&m8xx_pcmcia_driver);
1336 static void __exit m8xx_exit(void)
1338 of_unregister_platform_driver(&m8xx_pcmcia_driver);
1341 module_init(m8xx_init);
1342 module_exit(m8xx_exit);