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/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/cs_types.h>
64 #include <pcmcia/cs.h>
65 #include <pcmcia/ss.h>
67 #ifdef CONFIG_PCMCIA_DEBUG
69 module_param(pc_debug, int, 0);
70 #define dprintk(args...) printk(KERN_DEBUG "m8xx_pcmcia: " args);
72 #define dprintk(args...)
75 #define pcmcia_info(args...) printk(KERN_INFO "m8xx_pcmcia: "args)
76 #define pcmcia_error(args...) printk(KERN_ERR "m8xx_pcmcia: "args)
78 static const char *version = "Version 0.06, Aug 2005";
79 MODULE_LICENSE("Dual MPL/GPL");
81 #if !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B)
83 /* The RPX series use SLOT_B */
84 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
85 #define CONFIG_PCMCIA_SLOT_B
86 #define CONFIG_BD_IS_MHZ
89 /* The ADS board use SLOT_A */
91 #define CONFIG_PCMCIA_SLOT_A
92 #define CONFIG_BD_IS_MHZ
95 /* The FADS series are a mess */
97 #if defined(CONFIG_MPC860T) || defined(CONFIG_MPC860) || defined(CONFIG_MPC821)
98 #define CONFIG_PCMCIA_SLOT_A
100 #define CONFIG_PCMCIA_SLOT_B
104 #if defined(CONFIG_MPC885ADS)
105 #define CONFIG_PCMCIA_SLOT_A
106 #define PCMCIA_GLITCHY_CD
109 /* Cyclades ACS uses both slots */
111 #define CONFIG_PCMCIA_SLOT_A
112 #define CONFIG_PCMCIA_SLOT_B
115 #endif /* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */
117 #if defined(CONFIG_PCMCIA_SLOT_A) && defined(CONFIG_PCMCIA_SLOT_B)
119 #define PCMCIA_SOCKETS_NO 2
120 /* We have only 8 windows, dualsocket support will be limited. */
121 #define PCMCIA_MEM_WIN_NO 2
122 #define PCMCIA_IO_WIN_NO 2
123 #define PCMCIA_SLOT_MSG "SLOT_A and SLOT_B"
125 #elif defined(CONFIG_PCMCIA_SLOT_A) || defined(CONFIG_PCMCIA_SLOT_B)
127 #define PCMCIA_SOCKETS_NO 1
128 /* full support for one slot */
129 #define PCMCIA_MEM_WIN_NO 5
130 #define PCMCIA_IO_WIN_NO 2
132 /* define _slot_ to be able to optimize macros */
134 #ifdef CONFIG_PCMCIA_SLOT_A
136 #define PCMCIA_SLOT_MSG "SLOT_A"
139 #define PCMCIA_SLOT_MSG "SLOT_B"
143 #error m8xx_pcmcia: Bad configuration!
146 /* ------------------------------------------------------------------------- */
148 #define PCMCIA_MEM_WIN_BASE 0xe0000000 /* base address for memory window 0 */
149 #define PCMCIA_MEM_WIN_SIZE 0x04000000 /* each memory window is 64 MByte */
150 #define PCMCIA_IO_WIN_BASE _IO_BASE /* base address for io window 0 */
151 /* ------------------------------------------------------------------------- */
153 static int pcmcia_schlvl;
155 static DEFINE_SPINLOCK(events_lock);
157 #define PCMCIA_SOCKET_KEY_5V 1
158 #define PCMCIA_SOCKET_KEY_LV 2
160 /* look up table for pgcrx registers */
161 static u32 *m8xx_pgcrx[2];
164 * This structure is used to address each window in the PCMCIA controller.
166 * Keep in mind that we assume that pcmcia_win[n+1] is mapped directly
167 * after pcmcia_win[n]...
176 * For some reason the hardware guys decided to make both slots share
179 * Could someone invent object oriented hardware ?
181 * The macros are used to get the right bit from the registers.
186 #define M8XX_PCMCIA_VS1(slot) (0x80000000 >> (slot << 4))
187 #define M8XX_PCMCIA_VS2(slot) (0x40000000 >> (slot << 4))
188 #define M8XX_PCMCIA_VS_MASK(slot) (0xc0000000 >> (slot << 4))
189 #define M8XX_PCMCIA_VS_SHIFT(slot) (30 - (slot << 4))
191 #define M8XX_PCMCIA_WP(slot) (0x20000000 >> (slot << 4))
192 #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
193 #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
194 #define M8XX_PCMCIA_BVD2(slot) (0x04000000 >> (slot << 4))
195 #define M8XX_PCMCIA_BVD1(slot) (0x02000000 >> (slot << 4))
196 #define M8XX_PCMCIA_RDY(slot) (0x01000000 >> (slot << 4))
197 #define M8XX_PCMCIA_RDY_L(slot) (0x00800000 >> (slot << 4))
198 #define M8XX_PCMCIA_RDY_H(slot) (0x00400000 >> (slot << 4))
199 #define M8XX_PCMCIA_RDY_R(slot) (0x00200000 >> (slot << 4))
200 #define M8XX_PCMCIA_RDY_F(slot) (0x00100000 >> (slot << 4))
201 #define M8XX_PCMCIA_MASK(slot) (0xFFFF0000 >> (slot << 4))
203 #define M8XX_PCMCIA_POR_VALID 0x00000001
204 #define M8XX_PCMCIA_POR_WRPROT 0x00000002
205 #define M8XX_PCMCIA_POR_ATTRMEM 0x00000010
206 #define M8XX_PCMCIA_POR_IO 0x00000018
207 #define M8XX_PCMCIA_POR_16BIT 0x00000040
209 #define M8XX_PGCRX(slot) m8xx_pgcrx[slot]
211 #define M8XX_PGCRX_CXOE 0x00000080
212 #define M8XX_PGCRX_CXRESET 0x00000040
214 /* we keep one lookup table per socket to check flags */
216 #define PCMCIA_EVENTS_MAX 5 /* 4 max at a time + termination */
223 static const char driver_name[] = "m8xx-pcmcia";
226 void (*handler) (void *info, u32 events);
230 pcmconf8xx_t *pcmcia;
234 socket_state_t state;
235 struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO];
236 struct pccard_io_map io_win[PCMCIA_IO_WIN_NO];
237 struct event_table events[PCMCIA_EVENTS_MAX];
238 struct pcmcia_socket socket;
241 static struct socket_info socket[PCMCIA_SOCKETS_NO];
244 * Search this table to see if the windowsize is
248 #define M8XX_SIZES_NO 32
250 static const u32 m8xx_size_to_gray[M8XX_SIZES_NO] = {
251 0x00000001, 0x00000002, 0x00000008, 0x00000004,
252 0x00000080, 0x00000040, 0x00000010, 0x00000020,
253 0x00008000, 0x00004000, 0x00001000, 0x00002000,
254 0x00000100, 0x00000200, 0x00000800, 0x00000400,
256 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
257 0x01000000, 0x02000000, 0xffffffff, 0x04000000,
258 0x00010000, 0x00020000, 0x00080000, 0x00040000,
259 0x00800000, 0x00400000, 0x00100000, 0x00200000
262 /* ------------------------------------------------------------------------- */
264 static irqreturn_t m8xx_interrupt(int irq, void *dev);
266 #define PCMCIA_BMT_LIMIT (15*4) /* Bus Monitor Timeout value */
268 /* ------------------------------------------------------------------------- */
269 /* board specific stuff: */
270 /* voltage_set(), hardware_enable() and hardware_disable() */
271 /* ------------------------------------------------------------------------- */
272 /* RPX Boards from Embedded Planet */
274 #if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
276 /* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks.
277 * SYPCR is write once only, therefore must the slowest memory be faster
278 * than the bus monitor or we will get a machine check due to the bus timeout.
281 #define PCMCIA_BOARD_MSG "RPX CLASSIC or RPX LITE"
283 #undef PCMCIA_BMT_LIMIT
284 #define PCMCIA_BMT_LIMIT (6*8)
286 static int voltage_set(int slot, int vcc, int vpp)
294 reg |= BCSR1_PCVCTL4;
297 reg |= BCSR1_PCVCTL5;
309 reg |= BCSR1_PCVCTL6;
314 reg |= BCSR1_PCVCTL7;
319 if (!((vcc == 50) || (vcc == 0)))
322 /* first, turn off all power */
324 out_be32(((u32 *) RPX_CSR_ADDR),
325 in_be32(((u32 *) RPX_CSR_ADDR)) & ~(BCSR1_PCVCTL4 |
330 /* enable new powersettings */
332 out_be32(((u32 *) RPX_CSR_ADDR), in_be32(((u32 *) RPX_CSR_ADDR)) | reg);
337 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
338 #define hardware_enable(_slot_) /* No hardware to enable */
339 #define hardware_disable(_slot_) /* No hardware to disable */
341 #endif /* CONFIG_RPXCLASSIC */
343 /* FADS Boards from Motorola */
345 #if defined(CONFIG_FADS)
347 #define PCMCIA_BOARD_MSG "FADS"
349 static int voltage_set(int slot, int vcc, int vpp)
357 reg |= BCSR1_PCCVCC0;
360 reg |= BCSR1_PCCVCC1;
372 reg |= BCSR1_PCCVPP1;
377 if ((vcc == 33) || (vcc == 50))
378 reg |= BCSR1_PCCVPP0;
385 /* first, turn off all power */
386 out_be32((u32 *) BCSR1,
387 in_be32((u32 *) BCSR1) & ~(BCSR1_PCCVCC_MASK |
390 /* enable new powersettings */
391 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | reg);
396 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
398 static void hardware_enable(int slot)
400 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) & ~BCSR1_PCCEN);
403 static void hardware_disable(int slot)
405 out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | BCSR1_PCCEN);
410 /* MPC885ADS Boards */
412 #if defined(CONFIG_MPC885ADS)
414 #define PCMCIA_BOARD_MSG "MPC885ADS"
415 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
417 static inline void hardware_enable(int slot)
419 m8xx_pcmcia_ops.hw_ctrl(slot, 1);
422 static inline void hardware_disable(int slot)
424 m8xx_pcmcia_ops.hw_ctrl(slot, 0);
427 static inline int voltage_set(int slot, int vcc, int vpp)
429 return m8xx_pcmcia_ops.voltage_set(slot, vcc, vpp);
434 /* ------------------------------------------------------------------------- */
435 /* Motorola MBX860 */
437 #if defined(CONFIG_MBX)
439 #define PCMCIA_BOARD_MSG "MBX"
441 static int voltage_set(int slot, int vcc, int vpp)
469 if ((vcc == 33) || (vcc == 50))
477 /* first, turn off all power */
478 out_8((u8 *) MBX_CSR2_ADDR,
479 in_8((u8 *) MBX_CSR2_ADDR) & ~(CSR2_VCC_MASK | CSR2_VPP_MASK));
481 /* enable new powersettings */
482 out_8((u8 *) MBX_CSR2_ADDR, in_8((u8 *) MBX_CSR2_ADDR) | reg);
487 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
488 #define hardware_enable(_slot_) /* No hardware to enable */
489 #define hardware_disable(_slot_) /* No hardware to disable */
491 #endif /* CONFIG_MBX */
493 #if defined(CONFIG_PRxK)
494 #include <asm/cpld.h>
495 extern volatile fpga_pc_regs *fpga_pc;
497 #define PCMCIA_BOARD_MSG "MPC855T"
499 static int voltage_set(int slot, int vcc, int vpp)
503 cpld_regs *ccpld = get_cpld();
509 reg |= PCMCIA_VCC_33;
512 reg |= PCMCIA_VCC_50;
524 reg |= PCMCIA_VPP_VCC;
529 if ((vcc == 33) || (vcc == 50))
530 reg |= PCMCIA_VPP_12;
537 reg = reg >> (slot << 2);
538 regread = in_8(&ccpld->fpga_pc_ctl);
540 (regread & ((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)))) {
541 /* enable new powersettings */
543 regread & ~((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >>
545 out_8(&ccpld->fpga_pc_ctl, reg | regread);
552 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_LV
553 #define hardware_enable(_slot_) /* No hardware to enable */
554 #define hardware_disable(_slot_) /* No hardware to disable */
556 #endif /* CONFIG_PRxK */
558 static u32 pending_events[PCMCIA_SOCKETS_NO];
559 static DEFINE_SPINLOCK(pending_event_lock);
561 static irqreturn_t m8xx_interrupt(int irq, void *dev)
563 struct socket_info *s;
564 struct event_table *e;
565 unsigned int i, events, pscr, pipr, per;
566 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
568 dprintk("Interrupt!\n");
569 /* get interrupt sources */
571 pscr = in_be32(&pcmcia->pcmc_pscr);
572 pipr = in_be32(&pcmcia->pcmc_pipr);
573 per = in_be32(&pcmcia->pcmc_per);
575 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
581 if (pscr & e->regbit)
582 events |= e->eventbit;
588 * report only if both card detect signals are the same
590 * we depend on that CD2 is the bit to the left of CD1...
592 if (events & SS_DETECT)
593 if (((pipr & M8XX_PCMCIA_CD2(i)) >> 1) ^
594 (pipr & M8XX_PCMCIA_CD1(i))) {
595 events &= ~SS_DETECT;
597 #ifdef PCMCIA_GLITCHY_CD
599 * I've experienced CD problems with my ADS board.
600 * We make an extra check to see if there was a
601 * real change of Card detection.
604 if ((events & SS_DETECT) &&
606 (M8XX_PCMCIA_CD2(i) | M8XX_PCMCIA_CD1(i))) == 0) &&
607 (s->state.Vcc | s->state.Vpp)) {
608 events &= ~SS_DETECT;
609 /*printk( "CD glitch workaround - CD = 0x%08x!\n",
610 (pipr & (M8XX_PCMCIA_CD2(i)
611 | M8XX_PCMCIA_CD1(i)))); */
615 /* call the handler */
617 dprintk("slot %u: events = 0x%02x, pscr = 0x%08x, "
618 "pipr = 0x%08x\n", i, events, pscr, pipr);
621 spin_lock(&pending_event_lock);
622 pending_events[i] |= events;
623 spin_unlock(&pending_event_lock);
625 * Turn off RDY_L bits in the PER mask on
626 * CD interrupt receival.
628 * They can generate bad interrupts on the
629 * ACS4,8,16,32. - marcelo
631 per &= ~M8XX_PCMCIA_RDY_L(0);
632 per &= ~M8XX_PCMCIA_RDY_L(1);
634 out_be32(&pcmcia->pcmc_per, per);
637 pcmcia_parse_events(&socket[i].socket, events);
641 /* clear the interrupt sources */
642 out_be32(&pcmcia->pcmc_pscr, pscr);
644 dprintk("Interrupt done.\n");
649 static u32 m8xx_get_graycode(u32 size)
653 for (k = 0; k < M8XX_SIZES_NO; k++)
654 if (m8xx_size_to_gray[k] == size)
657 if ((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
663 static u32 m8xx_get_speed(u32 ns, u32 is_io, u32 bus_freq)
665 u32 reg, clocks, psst, psl, psht;
670 * We get called with IO maps setup to 0ns
671 * if not specified by the user.
672 * They should be 255ns.
678 ns = 100; /* fast memory if 0 */
682 * In PSST, PSL, PSHT fields we tell the controller
683 * timing parameters in CLKOUT clock cycles.
684 * CLKOUT is the same as GCLK2_50.
687 /* how we want to adjust the timing - in percent */
689 #define ADJ 180 /* 80 % longer accesstime - to be sure */
691 clocks = ((bus_freq / 1000) * ns) / 1000;
692 clocks = (clocks * ADJ) / (100 * 1000);
693 if (clocks >= PCMCIA_BMT_LIMIT) {
694 printk("Max access time limit reached\n");
695 clocks = PCMCIA_BMT_LIMIT - 1;
698 psst = clocks / 7; /* setup time */
699 psht = clocks / 7; /* hold time */
700 psl = (clocks * 5) / 7; /* strobe length */
702 psst += clocks - (psst + psht + psl);
711 static int m8xx_get_status(struct pcmcia_socket *sock, unsigned int *value)
713 int lsock = container_of(sock, struct socket_info, socket)->slot;
714 struct socket_info *s = &socket[lsock];
715 unsigned int pipr, reg;
716 pcmconf8xx_t *pcmcia = s->pcmcia;
718 pipr = in_be32(&pcmcia->pcmc_pipr);
720 *value = ((pipr & (M8XX_PCMCIA_CD1(lsock)
721 | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0;
722 *value |= (pipr & M8XX_PCMCIA_WP(lsock)) ? SS_WRPROT : 0;
724 if (s->state.flags & SS_IOCARD)
725 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_STSCHG : 0;
727 *value |= (pipr & M8XX_PCMCIA_RDY(lsock)) ? SS_READY : 0;
728 *value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_BATDEAD : 0;
729 *value |= (pipr & M8XX_PCMCIA_BVD2(lsock)) ? SS_BATWARN : 0;
732 if (s->state.Vcc | s->state.Vpp)
733 *value |= SS_POWERON;
737 * This driver only supports 16-Bit pc-cards.
738 * Cardbus is not handled here.
740 * To determine what voltage to use we must read the VS1 and VS2 pin.
741 * Depending on what socket type is present,
742 * different combinations mean different things.
744 * Card Key Socket Key VS1 VS2 Card Vcc for CIS parse
746 * 5V 5V, LV* NC NC 5V only 5V (if available)
748 * 5V 5V, LV* GND NC 5 or 3.3V as low as possible
750 * 5V 5V, LV* GND GND 5, 3.3, x.xV as low as possible
752 * LV* 5V - - shall not fit into socket
754 * LV* LV* GND NC 3.3V only 3.3V
756 * LV* LV* NC GND x.xV x.xV (if avail.)
758 * LV* LV* GND GND 3.3 or x.xV as low as possible
760 * *LV means Low Voltage
763 * That gives us the following table:
765 * Socket VS1 VS2 Voltage
768 * 5V NC GND none (should not be possible)
772 * LV NC NC 5V (if available)
773 * LV NC GND x.xV (if available)
777 * So, how do I determine if I have a 5V or a LV
778 * socket on my board? Look at the socket!
781 * Socket with 5V key:
782 * ++--------------------------------------------+
787 * +---------------------------------------------+
789 * Socket with LV key:
790 * ++--------------------------------------------+
795 * +---------------------------------------------+
798 * With other words - LV only cards does not fit
799 * into the 5V socket!
802 /* read out VS1 and VS2 */
804 reg = (pipr & M8XX_PCMCIA_VS_MASK(lsock))
805 >> M8XX_PCMCIA_VS_SHIFT(lsock);
807 if (socket_get(lsock) == PCMCIA_SOCKET_KEY_LV) {
811 break; /* GND, NC - 3.3V only */
814 break; /* NC. GND - x.xV only */
818 dprintk("GetStatus(%d) = %#2.2x\n", lsock, *value);
822 static int m8xx_set_socket(struct pcmcia_socket *sock, socket_state_t * state)
824 int lsock = container_of(sock, struct socket_info, socket)->slot;
825 struct socket_info *s = &socket[lsock];
826 struct event_table *e;
829 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
831 dprintk("SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
832 "io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags,
833 state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
835 /* First, set voltage - bail out if invalid */
836 if (voltage_set(lsock, state->Vcc, state->Vpp))
839 /* Take care of reset... */
840 if (state->flags & SS_RESET)
841 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXRESET); /* active high */
843 out_be32(M8XX_PGCRX(lsock),
844 in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXRESET);
846 /* ... and output enable. */
848 /* The CxOE signal is connected to a 74541 on the ADS.
849 I guess most other boards used the ADS as a reference.
850 I tried to control the CxOE signal with SS_OUTPUT_ENA,
851 but the reset signal seems connected via the 541.
852 If the CxOE is left high are some signals tristated and
853 no pullups are present -> the cards act weird.
854 So right now the buffers are enabled if the power is on. */
856 if (state->Vcc || state->Vpp)
857 out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXOE); /* active low */
859 out_be32(M8XX_PGCRX(lsock),
860 in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXOE);
863 * We'd better turn off interrupts before
864 * we mess with the events-table..
867 spin_lock_irqsave(&events_lock, flags);
870 * Play around with the interrupt mask to be able to
871 * give the events the generic pcmcia driver wants us to.
877 if (state->csc_mask & SS_DETECT) {
878 e->eventbit = SS_DETECT;
879 reg |= e->regbit = (M8XX_PCMCIA_CD2(lsock)
880 | M8XX_PCMCIA_CD1(lsock));
883 if (state->flags & SS_IOCARD) {
887 if (state->csc_mask & SS_STSCHG) {
888 e->eventbit = SS_STSCHG;
889 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
893 * If io_irq is non-zero we should enable irq.
896 out_be32(M8XX_PGCRX(lsock),
897 in_be32(M8XX_PGCRX(lsock)) |
898 mk_int_int_mask(s->hwirq) << 24);
900 * Strange thing here:
901 * The manual does not tell us which interrupt
902 * the sources generate.
903 * Anyhow, I found out that RDY_L generates IREQLVL.
905 * We use level triggerd interrupts, and they don't
906 * have to be cleared in PSCR in the interrupt handler.
908 reg |= M8XX_PCMCIA_RDY_L(lsock);
910 out_be32(M8XX_PGCRX(lsock),
911 in_be32(M8XX_PGCRX(lsock)) & 0x00ffffff);
916 if (state->csc_mask & SS_BATDEAD) {
917 e->eventbit = SS_BATDEAD;
918 reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
921 if (state->csc_mask & SS_BATWARN) {
922 e->eventbit = SS_BATWARN;
923 reg |= e->regbit = M8XX_PCMCIA_BVD2(lsock);
926 /* What should I trigger on - low/high,raise,fall? */
927 if (state->csc_mask & SS_READY) {
928 e->eventbit = SS_READY;
929 reg |= e->regbit = 0; //??
934 e->regbit = 0; /* terminate list */
937 * Clear the status changed .
938 * Port A and Port B share the same port.
939 * Writing ones will clear the bits.
942 out_be32(&pcmcia->pcmc_pscr, reg);
946 * Port A and Port B share the same port.
947 * Need for read-modify-write.
948 * Ones will enable the interrupt.
953 pcmc_per) & (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
954 out_be32(&pcmcia->pcmc_per, reg);
956 spin_unlock_irqrestore(&events_lock, flags);
958 /* copy the struct and modify the copy */
965 static int m8xx_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
967 int lsock = container_of(sock, struct socket_info, socket)->slot;
969 struct socket_info *s = &socket[lsock];
970 struct pcmcia_win *w;
971 unsigned int reg, winnr;
972 pcmconf8xx_t *pcmcia = s->pcmcia;
974 #define M8XX_SIZE (io->stop - io->start + 1)
975 #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)
977 dprintk("SetIOMap(%d, %d, %#2.2x, %d ns, "
978 "%#4.4x-%#4.4x)\n", lsock, io->map, io->flags,
979 io->speed, io->start, io->stop);
981 if ((io->map >= PCMCIA_IO_WIN_NO) || (io->start > 0xffff)
982 || (io->stop > 0xffff) || (io->stop < io->start))
985 if ((reg = m8xx_get_graycode(M8XX_SIZE)) == -1)
988 if (io->flags & MAP_ACTIVE) {
990 dprintk("io->flags & MAP_ACTIVE\n");
992 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
993 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
995 /* setup registers */
997 w = (void *)&pcmcia->pcmc_pbr0;
1000 out_be32(&w->or, 0); /* turn off window first */
1001 out_be32(&w->br, M8XX_BASE);
1004 reg |= M8XX_PCMCIA_POR_IO | (lsock << 2);
1006 reg |= m8xx_get_speed(io->speed, 1, s->bus_freq);
1008 if (io->flags & MAP_WRPROT)
1009 reg |= M8XX_PCMCIA_POR_WRPROT;
1011 /*if(io->flags & (MAP_16BIT | MAP_AUTOSZ)) */
1012 if (io->flags & MAP_16BIT)
1013 reg |= M8XX_PCMCIA_POR_16BIT;
1015 if (io->flags & MAP_ACTIVE)
1016 reg |= M8XX_PCMCIA_POR_VALID;
1018 out_be32(&w->or, reg);
1020 dprintk("Socket %u: Mapped io window %u at %#8.8x, "
1021 "OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1023 /* shutdown IO window */
1024 winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
1025 + (lsock * PCMCIA_IO_WIN_NO) + io->map;
1027 /* setup registers */
1029 w = (void *)&pcmcia->pcmc_pbr0;
1032 out_be32(&w->or, 0); /* turn off window */
1033 out_be32(&w->br, 0); /* turn off base address */
1035 dprintk("Socket %u: Unmapped io window %u at %#8.8x, "
1036 "OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
1039 /* copy the struct and modify the copy */
1040 s->io_win[io->map] = *io;
1041 s->io_win[io->map].flags &= (MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
1042 dprintk("SetIOMap exit\n");
1047 static int m8xx_set_mem_map(struct pcmcia_socket *sock,
1048 struct pccard_mem_map *mem)
1050 int lsock = container_of(sock, struct socket_info, socket)->slot;
1051 struct socket_info *s = &socket[lsock];
1052 struct pcmcia_win *w;
1053 struct pccard_mem_map *old;
1054 unsigned int reg, winnr;
1055 pcmconf8xx_t *pcmcia = s->pcmcia;
1057 dprintk("SetMemMap(%d, %d, %#2.2x, %d ns, "
1058 "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
1059 mem->speed, mem->static_start, mem->card_start);
1061 if ((mem->map >= PCMCIA_MEM_WIN_NO)
1062 // || ((mem->s) >= PCMCIA_MEM_WIN_SIZE)
1063 || (mem->card_start >= 0x04000000)
1064 || (mem->static_start & 0xfff) /* 4KByte resolution */
1065 ||(mem->card_start & 0xfff))
1068 if ((reg = m8xx_get_graycode(PCMCIA_MEM_WIN_SIZE)) == -1) {
1069 printk("Cannot set size to 0x%08x.\n", PCMCIA_MEM_WIN_SIZE);
1074 winnr = (lsock * PCMCIA_MEM_WIN_NO) + mem->map;
1076 /* Setup the window in the pcmcia controller */
1078 w = (void *)&pcmcia->pcmc_pbr0;
1083 reg |= m8xx_get_speed(mem->speed, 0, s->bus_freq);
1085 if (mem->flags & MAP_ATTRIB)
1086 reg |= M8XX_PCMCIA_POR_ATTRMEM;
1088 if (mem->flags & MAP_WRPROT)
1089 reg |= M8XX_PCMCIA_POR_WRPROT;
1091 if (mem->flags & MAP_16BIT)
1092 reg |= M8XX_PCMCIA_POR_16BIT;
1094 if (mem->flags & MAP_ACTIVE)
1095 reg |= M8XX_PCMCIA_POR_VALID;
1097 out_be32(&w->or, reg);
1099 dprintk("Socket %u: Mapped memory window %u at %#8.8x, "
1100 "OR = %#8.8x.\n", lsock, mem->map, w->br, w->or);
1102 if (mem->flags & MAP_ACTIVE) {
1103 /* get the new base address */
1104 mem->static_start = PCMCIA_MEM_WIN_BASE +
1105 (PCMCIA_MEM_WIN_SIZE * winnr)
1109 dprintk("SetMemMap(%d, %d, %#2.2x, %d ns, "
1110 "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
1111 mem->speed, mem->static_start, mem->card_start);
1113 /* copy the struct and modify the copy */
1115 old = &s->mem_win[mem->map];
1118 old->flags &= (MAP_ATTRIB | MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
1123 static int m8xx_sock_init(struct pcmcia_socket *sock)
1126 pccard_io_map io = { 0, 0, 0, 0, 1 };
1127 pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
1129 dprintk("sock_init(%d)\n", s);
1131 m8xx_set_socket(sock, &dead_socket);
1132 for (i = 0; i < PCMCIA_IO_WIN_NO; i++) {
1134 m8xx_set_io_map(sock, &io);
1136 for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) {
1138 m8xx_set_mem_map(sock, &mem);
1145 static int m8xx_sock_suspend(struct pcmcia_socket *sock)
1147 return m8xx_set_socket(sock, &dead_socket);
1150 static struct pccard_operations m8xx_services = {
1151 .init = m8xx_sock_init,
1152 .suspend = m8xx_sock_suspend,
1153 .get_status = m8xx_get_status,
1154 .set_socket = m8xx_set_socket,
1155 .set_io_map = m8xx_set_io_map,
1156 .set_mem_map = m8xx_set_mem_map,
1159 static int __init m8xx_probe(struct of_device *ofdev,
1160 const struct of_device_id *match)
1162 struct pcmcia_win *w;
1163 unsigned int i, m, hwirq;
1164 pcmconf8xx_t *pcmcia;
1166 struct device_node *np = ofdev->node;
1168 pcmcia_info("%s\n", version);
1170 pcmcia = of_iomap(np, 0);
1174 pcmcia_schlvl = irq_of_parse_and_map(np, 0);
1175 hwirq = irq_map[pcmcia_schlvl].hwirq;
1176 if (pcmcia_schlvl < 0) {
1181 m8xx_pgcrx[0] = &pcmcia->pcmc_pgcra;
1182 m8xx_pgcrx[1] = &pcmcia->pcmc_pgcrb;
1184 pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG
1185 " with IRQ %u (%d). \n", pcmcia_schlvl, hwirq);
1187 /* Configure Status change interrupt */
1189 if (request_irq(pcmcia_schlvl, m8xx_interrupt, IRQF_SHARED,
1190 driver_name, socket)) {
1191 pcmcia_error("Cannot allocate IRQ %u for SCHLVL!\n",
1197 w = (void *)&pcmcia->pcmc_pbr0;
1199 out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1200 clrbits32(&pcmcia->pcmc_per, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
1202 /* connect interrupt and disable CxOE */
1204 out_be32(M8XX_PGCRX(0),
1205 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
1206 out_be32(M8XX_PGCRX(1),
1207 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
1209 /* intialize the fixed memory windows */
1211 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1212 for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1213 out_be32(&w->br, PCMCIA_MEM_WIN_BASE +
1214 (PCMCIA_MEM_WIN_SIZE
1215 * (m + i * PCMCIA_MEM_WIN_NO)));
1217 out_be32(&w->or, 0); /* set to not valid */
1223 /* turn off voltage */
1224 voltage_set(0, 0, 0);
1225 voltage_set(1, 0, 0);
1227 /* Enable external hardware */
1231 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1233 socket[i].socket.owner = THIS_MODULE;
1234 socket[i].socket.features =
1235 SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP;
1236 socket[i].socket.irq_mask = 0x000;
1237 socket[i].socket.map_size = 0x1000;
1238 socket[i].socket.io_offset = 0;
1239 socket[i].socket.pci_irq = pcmcia_schlvl;
1240 socket[i].socket.ops = &m8xx_services;
1241 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
1242 socket[i].socket.cb_dev = NULL;
1243 socket[i].socket.dev.parent = &ofdev->dev;
1244 socket[i].pcmcia = pcmcia;
1245 socket[i].bus_freq = ppc_proc_freq;
1246 socket[i].hwirq = hwirq;
1250 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1251 status = pcmcia_register_socket(&socket[i].socket);
1253 pcmcia_error("Socket register failed\n");
1259 static int m8xx_remove(struct of_device *ofdev)
1262 struct pcmcia_win *w;
1263 pcmconf8xx_t *pcmcia = socket[0].pcmcia;
1265 for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
1266 w = (void *)&pcmcia->pcmc_pbr0;
1268 out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(i));
1269 out_be32(&pcmcia->pcmc_per,
1270 in_be32(&pcmcia->pcmc_per) & ~M8XX_PCMCIA_MASK(i));
1272 /* turn off interrupt and disable CxOE */
1273 out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);
1275 /* turn off memory windows */
1276 for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
1277 out_be32(&w->or, 0); /* set to not valid */
1281 /* turn off voltage */
1282 voltage_set(i, 0, 0);
1284 /* disable external hardware */
1285 hardware_disable(i);
1287 for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
1288 pcmcia_unregister_socket(&socket[i].socket);
1291 free_irq(pcmcia_schlvl, NULL);
1297 static int m8xx_suspend(struct platform_device *pdev, pm_message_t state)
1299 return pcmcia_socket_dev_suspend(&pdev->dev, state);
1302 static int m8xx_resume(struct platform_device *pdev)
1304 return pcmcia_socket_dev_resume(&pdev->dev);
1307 #define m8xx_suspend NULL
1308 #define m8xx_resume NULL
1311 static struct of_device_id m8xx_pcmcia_match[] = {
1314 .compatible = "fsl,pq-pcmcia",
1319 MODULE_DEVICE_TABLE(of, m8xx_pcmcia_match);
1321 static struct of_platform_driver m8xx_pcmcia_driver = {
1322 .name = driver_name,
1323 .match_table = m8xx_pcmcia_match,
1324 .probe = m8xx_probe,
1325 .remove = m8xx_remove,
1326 .suspend = m8xx_suspend,
1327 .resume = m8xx_resume,
1330 static int __init m8xx_init(void)
1332 return of_register_platform_driver(&m8xx_pcmcia_driver);
1335 static void __exit m8xx_exit(void)
1337 of_unregister_platform_driver(&m8xx_pcmcia_driver);
1340 module_init(m8xx_init);
1341 module_exit(m8xx_exit);