mISDN: Add XHFC support for embedded Speech-Design board to hfcmulti

New version without emulating arch specific stuff for the other
architectures, the special IO and init functions for the 8xx
microcontroller are in a separate include file.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/hardware/mISDN/Kconfig

@@ -13,7 +13,7 @@ config MISDN_HFCPCI
 
 config MISDN_HFCMULTI
 	tristate "Support for HFC multiport cards (HFC-4S/8S/E1)"
-	depends on PCI
+	depends on PCI || 8xx
 	depends on MISDN
 	help
 	  Enable support for cards with Cologne Chip AG's HFC multiport
@@ -23,6 +23,15 @@ config MISDN_HFCMULTI
 	   * HFC-8S (8 S/T interfaces on one chip)
 	   * HFC-E1 (E1 interface for 2Mbit ISDN)
 
+config MISDN_HFCMULTI_8xx
+	boolean "Support for XHFC embedded board in HFC multiport driver"
+	depends on MISDN
+	depends on MISDN_HFCMULTI
+	depends on 8xx
+	default 8xx
+	help
+	  Enable support for the XHFC embedded solution from Speech Design.
+
 config MISDN_HFCUSB
 	tristate "Support for HFC-S USB based TAs"
 	depends on USB

drivers/isdn/hardware/mISDN/hfc_multi.h

@@ -17,6 +17,16 @@
 #define	PCI_ENA_REGIO	0x01
 #define	PCI_ENA_MEMIO	0x02
 
+#define XHFC_IRQ	4		/* SIU_IRQ2 */
+#define XHFC_MEMBASE	0xFE000000
+#define XHFC_MEMSIZE    0x00001000
+#define XHFC_OFFSET	0x00001000
+#define PA_XHFC_A0	0x0020		/* PA10 */
+#define PB_XHFC_IRQ1	0x00000100	/* PB23 */
+#define PB_XHFC_IRQ2	0x00000200	/* PB22 */
+#define PB_XHFC_IRQ3	0x00000400	/* PB21 */
+#define PB_XHFC_IRQ4	0x00000800	/* PB20 */
+
 /*
  * NOTE: some registers are assigned multiple times due to different modes
  *       also registers are assigned differen for HFC-4s/8s and HFC-E1
@@ -81,6 +91,11 @@ struct hfcm_hw {
 #define	HFC_CFG_CRC4		10 /* disable CRC-4 Multiframe mode, */
 					/* use double frame instead. */
 
+#define HFC_TYPE_E1		1 /* controller is HFC-E1 */
+#define HFC_TYPE_4S		4 /* controller is HFC-4S */
+#define HFC_TYPE_8S		8 /* controller is HFC-8S */
+#define HFC_TYPE_XHFC		5 /* controller is XHFC */
+
 #define	HFC_CHIP_EXRAM_128	0 /* external ram 128k */
 #define	HFC_CHIP_EXRAM_512	1 /* external ram 256k */
 #define	HFC_CHIP_REVISION0	2 /* old fifo handling */
@@ -88,19 +103,22 @@ struct hfcm_hw {
 #define	HFC_CHIP_PCM_MASTER	4 /* PCM is master */
 #define	HFC_CHIP_RX_SYNC	5 /* disable pll sync for pcm */
 #define	HFC_CHIP_DTMF		6 /* DTMF decoding is enabled */
-#define	HFC_CHIP_ULAW		7 /* ULAW mode */
-#define	HFC_CHIP_CLOCK2		8 /* double clock mode */
-#define	HFC_CHIP_E1CLOCK_GET	9 /* always get clock from E1 interface */
-#define	HFC_CHIP_E1CLOCK_PUT	10 /* always put clock from E1 interface */
-#define	HFC_CHIP_WATCHDOG	11 /* whether we should send signals */
+#define	HFC_CHIP_CONF		7 /* conference handling is enabled */
+#define	HFC_CHIP_ULAW		8 /* ULAW mode */
+#define	HFC_CHIP_CLOCK2		9 /* double clock mode */
+#define	HFC_CHIP_E1CLOCK_GET	10 /* always get clock from E1 interface */
+#define	HFC_CHIP_E1CLOCK_PUT	11 /* always put clock from E1 interface */
+#define	HFC_CHIP_WATCHDOG	12 /* whether we should send signals */
 					/* to the watchdog */
-#define	HFC_CHIP_B410P		12 /* whether we have a b410p with echocan in */
+#define	HFC_CHIP_B410P		13 /* whether we have a b410p with echocan in */
 					/* hw */
-#define	HFC_CHIP_PLXSD		13 /* whether we have a Speech-Design PLX */
+#define	HFC_CHIP_PLXSD		14 /* whether we have a Speech-Design PLX */
+#define	HFC_CHIP_EMBSD          15 /* whether we have a SD Embedded board */
 
 #define HFC_IO_MODE_PCIMEM	0x00 /* normal memory mapped IO */
 #define HFC_IO_MODE_REGIO	0x01 /* PCI io access */
 #define HFC_IO_MODE_PLXSD	0x02 /* access HFC via PLX9030 */
+#define HFC_IO_MODE_EMBSD	0x03 /* direct access */
 
 /* table entry in the PCI devices list */
 struct hm_map {
@@ -113,6 +131,7 @@ struct hm_map {
 	int opticalsupport;
 	int dip_type;
 	int io_mode;
+	int irq;
 };
 
 struct hfc_multi {
@@ -120,7 +139,7 @@ struct hfc_multi {
 	struct hm_map	*mtyp;
 	int		id;
 	int		pcm;	/* id of pcm bus */
-	int		type;
+	int		ctype;	/* controller type */
 	int		ports;
 
 	u_int		irq;	/* irq used by card */
@@ -160,10 +179,16 @@ struct hfc_multi {
 				int len);
 	void		(*write_fifo)(struct hfc_multi *hc, u_char *data,
 				int len);
-	u_long		pci_origmembase, plx_origmembase, dsp_origmembase;
+	u_long		pci_origmembase, plx_origmembase;
 	void __iomem	*pci_membase; /* PCI memory */
 	void __iomem	*plx_membase; /* PLX memory */
-	u_char		*dsp_membase; /* DSP on PLX */
+	u_long		xhfc_origmembase;
+	u_char		*xhfc_membase;
+	u_long		*xhfc_memaddr, *xhfc_memdata;
+#ifdef CONFIG_MISDN_HFCMULTI_8xx
+	struct immap	*immap;
+#endif
+	u_long		pb_irqmsk;	/* Portbit mask to check the IRQ line */
 	u_long		pci_iobase; /* PCI IO */
 	struct hfcm_hw	hw;	/* remember data of write-only-registers */
 

drivers/isdn/hardware/mISDN/hfc_multi_8xx.h

+/*
+ * For License see notice in hfc_multi.c
+ *
+ * special IO and init functions for the embedded XHFC board
+ * from Speech Design
+ *
+ */
+
+#include <asm/8xx_immap.h>
+
+/* Change this to the value used by your board */
+#ifndef IMAP_ADDR
+#define IMAP_ADDR	0xFFF00000
+#endif
+
+static void
+#ifdef HFC_REGISTER_DEBUG
+HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val,
+		const char *function, int line)
+#else
+HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val)
+#endif
+{
+	hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
+	writeb(reg, hc->xhfc_memaddr);
+	hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
+	writeb(val, hc->xhfc_memdata);
+}
+static u_char
+#ifdef HFC_REGISTER_DEBUG
+HFC_inb_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
+#else
+HFC_inb_embsd(struct hfc_multi *hc, u_char reg)
+#endif
+{
+	hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
+	writeb(reg, hc->xhfc_memaddr);
+	hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
+	return readb(hc->xhfc_memdata);
+}
+static u_short
+#ifdef HFC_REGISTER_DEBUG
+HFC_inw_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
+#else
+HFC_inw_embsd(struct hfc_multi *hc, u_char reg)
+#endif
+{
+	hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
+	writeb(reg, hc->xhfc_memaddr);
+	hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
+	return readb(hc->xhfc_memdata);
+}
+static void
+#ifdef HFC_REGISTER_DEBUG
+HFC_wait_embsd(struct hfc_multi *hc, const char *function, int line)
+#else
+HFC_wait_embsd(struct hfc_multi *hc)
+#endif
+{
+	hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
+	writeb(R_STATUS, hc->xhfc_memaddr);
+	hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
+	while (readb(hc->xhfc_memdata) & V_BUSY)
+		cpu_relax();
+}
+
+/* write fifo data (EMBSD) */
+void
+write_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
+{
+	hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
+	*hc->xhfc_memaddr = A_FIFO_DATA0;
+	hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
+	while (len) {
+		*hc->xhfc_memdata = *data;
+		data++;
+		len--;
+	}
+}
+
+/* read fifo data (EMBSD) */
+void
+read_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
+{
+	hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
+	*hc->xhfc_memaddr = A_FIFO_DATA0;
+	hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
+	while (len) {
+		*data = (u_char)(*hc->xhfc_memdata);
+		data++;
+		len--;
+	}
+}
+
+static int
+setup_embedded(struct hfc_multi *hc, struct hm_map *m)
+{
+	printk(KERN_INFO
+	    "HFC-multi: card manufacturer: '%s' card name: '%s' clock: %s\n",
+	    m->vendor_name, m->card_name, m->clock2 ? "double" : "normal");
+
+	hc->pci_dev = NULL;
+	if (m->clock2)
+		test_and_set_bit(HFC_CHIP_CLOCK2, &hc->chip);
+
+	hc->leds = m->leds;
+	hc->ledstate = 0xAFFEAFFE;
+	hc->opticalsupport = m->opticalsupport;
+
+	hc->pci_iobase = 0;
+	hc->pci_membase = 0;
+	hc->xhfc_membase = NULL;
+	hc->xhfc_memaddr = NULL;
+	hc->xhfc_memdata = NULL;
+
+	/* set memory access methods */
+	if (m->io_mode) /* use mode from card config */
+		hc->io_mode = m->io_mode;
+	switch (hc->io_mode) {
+	case HFC_IO_MODE_EMBSD:
+		test_and_set_bit(HFC_CHIP_EMBSD, &hc->chip);
+		hc->slots = 128; /* required */
+		/* fall through */
+		hc->HFC_outb = HFC_outb_embsd;
+		hc->HFC_inb = HFC_inb_embsd;
+		hc->HFC_inw = HFC_inw_embsd;
+		hc->HFC_wait = HFC_wait_embsd;
+		hc->read_fifo = read_fifo_embsd;
+		hc->write_fifo = write_fifo_embsd;
+		hc->xhfc_origmembase = XHFC_MEMBASE + XHFC_OFFSET * hc->id;
+		hc->xhfc_membase = (u_char *)ioremap(hc->xhfc_origmembase,
+				XHFC_MEMSIZE);
+		if (!hc->xhfc_membase) {
+			printk(KERN_WARNING
+			    "HFC-multi: failed to remap xhfc address space. "
+			    "(internal error)\n");
+			return -EIO;
+		}
+		hc->xhfc_memaddr = (u_long *)(hc->xhfc_membase + 4);
+		hc->xhfc_memdata = (u_long *)(hc->xhfc_membase);
+		printk(KERN_INFO
+		    "HFC-multi: xhfc_membase:%#lx xhfc_origmembase:%#lx "
+		    "xhfc_memaddr:%#lx xhfc_memdata:%#lx\n",
+		    (u_long)hc->xhfc_membase, hc->xhfc_origmembase,
+		    (u_long)hc->xhfc_memaddr, (u_long)hc->xhfc_memdata);
+		break;
+	default:
+		printk(KERN_WARNING "HFC-multi: Invalid IO mode.\n");
+		return -EIO;
+	}
+
+	/* Prepare the MPC8XX PortA 10 as output (address/data selector) */
+	hc->immap = (struct immap *)(IMAP_ADDR);
+	hc->immap->im_ioport.iop_papar &= ~(PA_XHFC_A0);
+	hc->immap->im_ioport.iop_paodr &= ~(PA_XHFC_A0);
+	hc->immap->im_ioport.iop_padir |=   PA_XHFC_A0;
+
+	/* Prepare the MPC8xx PortB __X__ as input (ISDN__X__IRQ) */
+	hc->pb_irqmsk = (PB_XHFC_IRQ1 << hc->id);
+	hc->immap->im_cpm.cp_pbpar &= ~(hc->pb_irqmsk);
+	hc->immap->im_cpm.cp_pbodr &= ~(hc->pb_irqmsk);
+	hc->immap->im_cpm.cp_pbdir &= ~(hc->pb_irqmsk);
+
+	/* At this point the needed config is done */
+	/* fifos are still not enabled */
+	return 0;
+}

drivers/isdn/mISDN/dsp_cmx.c

@@ -947,6 +947,10 @@ dsp_cmx_hardware(struct dsp_conf *conf, struct dsp *dsp)
 	if (current_conf >= 0) {
 join_members:
 		list_for_each_entry(member, &conf->mlist, list) {
+			/* if no conference engine on our chip, change to
+			 * software */
+			if (!member->dsp->features.hfc_conf)
+				goto conf_software;
 			/* in case of hdlc, change to software */
 			if (member->dsp->hdlc)
 				goto conf_software;

include/linux/mISDNdsp.h

@@ -25,6 +25,7 @@ extern void mISDN_dsp_element_unregister(struct mISDN_dsp_element *elem);
 struct dsp_features {
 	int	hfc_id; /* unique id to identify the chip (or -1) */
 	int	hfc_dtmf; /* set if HFCmulti card supports dtmf */
+	int	hfc_conf; /* set if HFCmulti card supports conferences */
 	int	hfc_loops; /* set if card supports tone loops */
 	int	hfc_echocanhw; /* set if card supports echocancelation*/
 	int	pcm_id; /* unique id to identify the pcm bus (or -1) */