14 files changed, 1109 insertions, 217 deletions

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 365c306c7cf..45dbdc14915 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -550,13 +550,21 @@ config PATA_WINBOND_VLB
 
 config PATA_PLATFORM
 	tristate "Generic platform device PATA support"
-	depends on EMBEDDED
+	depends on EMBEDDED || ARCH_RPC
 	help
 	  This option enables support for generic directly connected ATA
 	  devices commonly found on embedded systems.
 
 	  If unsure, say N.
 
+config PATA_ICSIDE
+	tristate "Acorn ICS PATA support"
+	depends on ARM && ARCH_ACORN
+	help
+	  On Acorn systems, say Y here if you wish to use the ICS PATA
+	  interface card.  This is not required for ICS partition support.
+	  If you are unsure, say N to this.
+
 config PATA_IXP4XX_CF
 	tristate "IXP4XX Compact Flash support"
 	depends on ARCH_IXP4XX
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index b7055e30265..6f42a0e2812 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -62,6 +62,7 @@ obj-$(CONFIG_PATA_TRIFLEX)	+= pata_triflex.o
 obj-$(CONFIG_PATA_IXP4XX_CF)	+= pata_ixp4xx_cf.o
 obj-$(CONFIG_PATA_SCC)		+= pata_scc.o
 obj-$(CONFIG_PATA_PLATFORM)	+= pata_platform.o
+obj-$(CONFIG_PATA_ICSIDE)	+= pata_icside.o
 # Should be last but one libata driver
 obj-$(CONFIG_ATA_GENERIC)	+= ata_generic.o
 # Should be last libata driver
diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c
new file mode 100644
index 00000000000..dbc8ee2adcf
--- /dev/null
+++ b/drivers/ata/pata_icside.c
@@ -0,0 +1,686 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/blkdev.h>
+#include <scsi/scsi_host.h>
+#include <linux/ata.h>
+#include <linux/libata.h>
+
+#include <asm/dma.h>
+#include <asm/ecard.h>
+
+#define DRV_NAME	"pata_icside"
+
+#define ICS_IDENT_OFFSET		0x2280
+
+#define ICS_ARCIN_V5_INTRSTAT		0x0000
+#define ICS_ARCIN_V5_INTROFFSET		0x0004
+
+#define ICS_ARCIN_V6_INTROFFSET_1	0x2200
+#define ICS_ARCIN_V6_INTRSTAT_1		0x2290
+#define ICS_ARCIN_V6_INTROFFSET_2	0x3200
+#define ICS_ARCIN_V6_INTRSTAT_2		0x3290
+
+struct portinfo {
+	unsigned int dataoffset;
+	unsigned int ctrloffset;
+	unsigned int stepping;
+};
+
+static const struct portinfo pata_icside_portinfo_v5 = {
+	.dataoffset	= 0x2800,
+	.ctrloffset	= 0x2b80,
+	.stepping	= 6,
+};
+
+static const struct portinfo pata_icside_portinfo_v6_1 = {
+	.dataoffset	= 0x2000,
+	.ctrloffset	= 0x2380,
+	.stepping	= 6,
+};
+
+static const struct portinfo pata_icside_portinfo_v6_2 = {
+	.dataoffset	= 0x3000,
+	.ctrloffset	= 0x3380,
+	.stepping	= 6,
+};
+
+#define PATA_ICSIDE_MAX_SG	128
+
+struct pata_icside_state {
+	void __iomem *irq_port;
+	void __iomem *ioc_base;
+	unsigned int type;
+	unsigned int dma;
+	struct {
+		u8 port_sel;
+		u8 disabled;
+		unsigned int speed[ATA_MAX_DEVICES];
+	} port[2];
+	struct scatterlist sg[PATA_ICSIDE_MAX_SG];
+};
+
+#define ICS_TYPE_A3IN	0
+#define ICS_TYPE_A3USER	1
+#define ICS_TYPE_V6	3
+#define ICS_TYPE_V5	15
+#define ICS_TYPE_NOTYPE	((unsigned int)-1)
+
+/* ---------------- Version 5 PCB Support Functions --------------------- */
+/* Prototype: pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
+ * Purpose  : enable interrupts from card
+ */
+static void pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
+{
+	struct pata_icside_state *state = ec->irq_data;
+
+	writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
+}
+
+/* Prototype: pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
+ * Purpose  : disable interrupts from card
+ */
+static void pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
+{
+	struct pata_icside_state *state = ec->irq_data;
+
+	readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
+}
+
+static const expansioncard_ops_t pata_icside_ops_arcin_v5 = {
+	.irqenable	= pata_icside_irqenable_arcin_v5,
+	.irqdisable	= pata_icside_irqdisable_arcin_v5,
+};
+
+
+/* ---------------- Version 6 PCB Support Functions --------------------- */
+/* Prototype: pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
+ * Purpose  : enable interrupts from card
+ */
+static void pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
+{
+	struct pata_icside_state *state = ec->irq_data;
+	void __iomem *base = state->irq_port;
+
+	if (!state->port[0].disabled)
+		writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
+	if (!state->port[1].disabled)
+		writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
+}
+
+/* Prototype: pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
+ * Purpose  : disable interrupts from card
+ */
+static void pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
+{
+	struct pata_icside_state *state = ec->irq_data;
+
+	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
+	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
+}
+
+/* Prototype: pata_icside_irqprobe(struct expansion_card *ec)
+ * Purpose  : detect an active interrupt from card
+ */
+static int pata_icside_irqpending_arcin_v6(struct expansion_card *ec)
+{
+	struct pata_icside_state *state = ec->irq_data;
+
+	return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 ||
+	       readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
+}
+
+static const expansioncard_ops_t pata_icside_ops_arcin_v6 = {
+	.irqenable	= pata_icside_irqenable_arcin_v6,
+	.irqdisable	= pata_icside_irqdisable_arcin_v6,
+	.irqpending	= pata_icside_irqpending_arcin_v6,
+};
+
+
+/*
+ * SG-DMA support.
+ *
+ * Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
+ * There is only one DMA controller per card, which means that only
+ * one drive can be accessed at one time.  NOTE! We do not enforce that
+ * here, but we rely on the main IDE driver spotting that both
+ * interfaces use the same IRQ, which should guarantee this.
+ */
+
+/*
+ * Configure the IOMD to give the appropriate timings for the transfer
+ * mode being requested.  We take the advice of the ATA standards, and
+ * calculate the cycle time based on the transfer mode, and the EIDE
+ * MW DMA specs that the drive provides in the IDENTIFY command.
+ *
+ * We have the following IOMD DMA modes to choose from:
+ *
+ *	Type	Active		Recovery	Cycle
+ *	A	250 (250)	312 (550)	562 (800)
+ *	B	187 (200)	250 (550)	437 (750)
+ *	C	125 (125)	125 (375)	250 (500)
+ *	D	62  (50)	125 (375)	187 (425)
+ *
+ * (figures in brackets are actual measured timings on DIOR/DIOW)
+ *
+ * However, we also need to take care of the read/write active and
+ * recovery timings:
+ *
+ *			Read	Write
+ *  	Mode	Active	-- Recovery --	Cycle	IOMD type
+ *	MW0	215	50	215	480	A
+ *	MW1	80	50	50	150	C
+ *	MW2	70	25	25	120	C
+ */
+static void pata_icside_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+	struct pata_icside_state *state = ap->host->private_data;
+	struct ata_timing t;
+	unsigned int cycle;
+	char iomd_type;
+
+	/*
+	 * DMA is based on a 16MHz clock
+	 */
+	if (ata_timing_compute(adev, adev->dma_mode, &t, 1000, 1))
+		return;
+
+	/*
+	 * Choose the IOMD cycle timing which ensure that the interface
+	 * satisfies the measured active, recovery and cycle times.
+	 */
+	if (t.active <= 50 && t.recover <= 375 && t.cycle <= 425)
+		iomd_type = 'D', cycle = 187;
+	else if (t.active <= 125 && t.recover <= 375 && t.cycle <= 500)
+		iomd_type = 'C', cycle = 250;
+	else if (t.active <= 200 && t.recover <= 550 && t.cycle <= 750)
+		iomd_type = 'B', cycle = 437;
+	else
+		iomd_type = 'A', cycle = 562;
+
+	ata_dev_printk(adev, KERN_INFO, "timings: act %dns rec %dns cyc %dns (%c)\n",
+		t.active, t.recover, t.cycle, iomd_type);
+
+	state->port[ap->port_no].speed[adev->devno] = cycle;
+}
+
+static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct pata_icside_state *state = ap->host->private_data;
+	struct scatterlist *sg, *rsg = state->sg;
+	unsigned int write = qc->tf.flags & ATA_TFLAG_WRITE;
+
+	/*
+	 * We are simplex; BUG if we try to fiddle with DMA
+	 * while it's active.
+	 */
+	BUG_ON(dma_channel_active(state->dma));
+
+	/*
+	 * Copy ATAs scattered sg list into a contiguous array of sg
+	 */
+	ata_for_each_sg(sg, qc) {
+		memcpy(rsg, sg, sizeof(*sg));
+		rsg++;
+	}
+
+	/*
+	 * Route the DMA signals to the correct interface
+	 */
+	writeb(state->port[ap->port_no].port_sel, state->ioc_base);
+
+	set_dma_speed(state->dma, state->port[ap->port_no].speed[qc->dev->devno]);
+	set_dma_sg(state->dma, state->sg, rsg - state->sg);
+	set_dma_mode(state->dma, write ? DMA_MODE_WRITE : DMA_MODE_READ);
+
+	/* issue r/w command */
+	ap->ops->exec_command(ap, &qc->tf);
+}
+
+static void pata_icside_bmdma_start(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct pata_icside_state *state = ap->host->private_data;
+
+	BUG_ON(dma_channel_active(state->dma));
+	enable_dma(state->dma);
+}
+
+static void pata_icside_bmdma_stop(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct pata_icside_state *state = ap->host->private_data;
+
+	disable_dma(state->dma);
+
+	/* see ata_bmdma_stop */
+	ata_altstatus(ap);
+}
+
+static u8 pata_icside_bmdma_status(struct ata_port *ap)
+{
+	struct pata_icside_state *state = ap->host->private_data;
+	void __iomem *irq_port;
+
+	irq_port = state->irq_port + (ap->port_no ? ICS_ARCIN_V6_INTRSTAT_2 :
+						    ICS_ARCIN_V6_INTRSTAT_1);
+
+	return readb(irq_port) & 1 ? ATA_DMA_INTR : 0;
+}
+
+static int icside_dma_init(struct ata_probe_ent *ae, struct expansion_card *ec)
+{
+	struct pata_icside_state *state = ae->private_data;
+	int i;
+
+	for (i = 0; i < ATA_MAX_DEVICES; i++) {
+		state->port[0].speed[i] = 480;
+		state->port[1].speed[i] = 480;
+	}
+
+	if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
+		state->dma = ec->dma;
+		ae->mwdma_mask = 0x07;	/* MW0..2 */
+	}
+
+	return 0;
+}
+
+
+static int pata_icside_port_start(struct ata_port *ap)
+{
+	/* No PRD to alloc */
+	return ata_pad_alloc(ap, ap->dev);
+}
+
+static struct scsi_host_template pata_icside_sht = {
+	.module			= THIS_MODULE,
+	.name			= DRV_NAME,
+	.ioctl			= ata_scsi_ioctl,
+	.queuecommand		= ata_scsi_queuecmd,
+	.can_queue		= ATA_DEF_QUEUE,
+	.this_id		= ATA_SHT_THIS_ID,
+	.sg_tablesize		= PATA_ICSIDE_MAX_SG,
+	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
+	.emulated		= ATA_SHT_EMULATED,
+	.use_clustering		= ATA_SHT_USE_CLUSTERING,
+	.proc_name		= DRV_NAME,
+	.dma_boundary		= ~0, /* no dma boundaries */
+	.slave_configure	= ata_scsi_slave_config,
+	.slave_destroy		= ata_scsi_slave_destroy,
+	.bios_param		= ata_std_bios_param,
+};
+
+/* wish this was exported from libata-core */
+static void ata_dummy_noret(struct ata_port *port)
+{
+}
+
+/*
+ * We need to shut down unused ports to prevent spurious interrupts.
+ * FIXME: the libata core doesn't call this function for PATA interfaces.
+ */
+static void pata_icside_port_disable(struct ata_port *ap)
+{
+	struct pata_icside_state *state = ap->host->private_data;
+
+	ata_port_printk(ap, KERN_ERR, "disabling icside port\n");
+
+	ata_port_disable(ap);
+
+	state->port[ap->port_no].disabled = 1;
+
+	if (state->type == ICS_TYPE_V6) {
+		/*
+		 * Disable interrupts from this port, otherwise we
+		 * receive spurious interrupts from the floating
+		 * interrupt line.
+		 */
+		void __iomem *irq_port = state->irq_port +
+				(ap->port_no ? ICS_ARCIN_V6_INTROFFSET_2 : ICS_ARCIN_V6_INTROFFSET_1);
+		readb(irq_port);
+	}
+}
+
+static u8 pata_icside_irq_ack(struct ata_port *ap, unsigned int chk_drq)
+{
+	unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY;
+	u8 status;
+
+	status = ata_busy_wait(ap, bits, 1000);
+	if (status & bits)
+		if (ata_msg_err(ap))
+			printk(KERN_ERR "abnormal status 0x%X\n", status);
+
+	if (ata_msg_intr(ap))
+		printk(KERN_INFO "%s: irq ack: drv_stat 0x%X\n",
+			__FUNCTION__, status);
+
+	return status;
+}
+
+static struct ata_port_operations pata_icside_port_ops = {
+	.port_disable		= pata_icside_port_disable,
+
+	.set_dmamode		= pata_icside_set_dmamode,
+
+	.tf_load		= ata_tf_load,
+	.tf_read		= ata_tf_read,
+	.exec_command		= ata_exec_command,
+	.check_status		= ata_check_status,
+	.dev_select		= ata_std_dev_select,
+
+	.bmdma_setup		= pata_icside_bmdma_setup,
+	.bmdma_start		= pata_icside_bmdma_start,
+
+	.data_xfer		= ata_data_xfer_noirq,
+
+	/* no need to build any PRD tables for DMA */
+	.qc_prep		= ata_noop_qc_prep,
+	.qc_issue		= ata_qc_issue_prot,
+
+	.freeze			= ata_bmdma_freeze,
+	.thaw			= ata_bmdma_thaw,
+	.error_handler		= ata_bmdma_error_handler,
+	.post_internal_cmd	= pata_icside_bmdma_stop,
+
+	.irq_handler		= ata_interrupt,
+	.irq_clear		= ata_dummy_noret,
+	.irq_on			= ata_irq_on,
+	.irq_ack		= pata_icside_irq_ack,
+
+	.port_start		= pata_icside_port_start,
+
+	.bmdma_stop		= pata_icside_bmdma_stop,
+	.bmdma_status		= pata_icside_bmdma_status,
+};
+
+static void
+pata_icside_add_port(struct ata_probe_ent *ae, void __iomem *base,
+		     const struct portinfo *info)
+{
+	struct ata_ioports *ioaddr = &ae->port[ae->n_ports++];
+	void __iomem *cmd = base + info->dataoffset;
+
+	ioaddr->cmd_addr	= cmd;
+	ioaddr->data_addr	= cmd + (ATA_REG_DATA    << info->stepping);
+	ioaddr->error_addr	= cmd + (ATA_REG_ERR     << info->stepping);
+	ioaddr->feature_addr	= cmd + (ATA_REG_FEATURE << info->stepping);
+	ioaddr->nsect_addr	= cmd + (ATA_REG_NSECT   << info->stepping);
+	ioaddr->lbal_addr	= cmd + (ATA_REG_LBAL    << info->stepping);
+	ioaddr->lbam_addr	= cmd + (ATA_REG_LBAM    << info->stepping);
+	ioaddr->lbah_addr	= cmd + (ATA_REG_LBAH    << info->stepping);
+	ioaddr->device_addr	= cmd + (ATA_REG_DEVICE  << info->stepping);
+	ioaddr->status_addr	= cmd + (ATA_REG_STATUS  << info->stepping);
+	ioaddr->command_addr	= cmd + (ATA_REG_CMD     << info->stepping);
+
+	ioaddr->ctl_addr	= base + info->ctrloffset;
+	ioaddr->altstatus_addr	= ioaddr->ctl_addr;
+}
+
+static int __init
+pata_icside_register_v5(struct ata_probe_ent *ae, struct expansion_card *ec)
+{
+	struct pata_icside_state *state = ae->private_data;
+	void __iomem *base;
+
+	base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
+		       ecard_resource_len(ec, ECARD_RES_MEMC));
+	if (!base)
+		return -ENOMEM;
+
+	state->irq_port = base;
+
+	ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
+	ec->irqmask = 1;
+	ec->irq_data = state;
+	ec->ops = &pata_icside_ops_arcin_v5;
+
+	/*
+	 * Be on the safe side - disable interrupts
+	 */
+	ec->ops->irqdisable(ec, ec->irq);
+
+	pata_icside_add_port(ae, base, &pata_icside_portinfo_v5);
+
+	return 0;
+}
+
+static int __init
+pata_icside_register_v6(struct ata_probe_ent *ae, struct expansion_card *ec)
+{
+	struct pata_icside_state *state = ae->private_data;
+	void __iomem *ioc_base, *easi_base;
+	unsigned int sel = 0;
+	int ret;
+
+	ioc_base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
+			   ecard_resource_len(ec, ECARD_RES_IOCFAST));
+	if (!ioc_base) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	easi_base = ioc_base;
+
+	if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
+		easi_base = ioremap(ecard_resource_start(ec, ECARD_RES_EASI),
+				    ecard_resource_len(ec, ECARD_RES_EASI));
+		if (!easi_base) {
+			ret = -ENOMEM;
+			goto unmap_slot;
+		}
+
+		/*
+		 * Enable access to the EASI region.
+		 */
+		sel = 1 << 5;
+	}
+
+	writeb(sel, ioc_base);
+
+	ec->irq_data = state;
+	ec->ops = &pata_icside_ops_arcin_v6;
+
+	state->irq_port = easi_base;
+	state->ioc_base = ioc_base;
+	state->port[0].port_sel = sel;
+	state->port[1].port_sel = sel | 1;
+
+	/*
+	 * Be on the safe side - disable interrupts
+	 */
+	ec->ops->irqdisable(ec, ec->irq);
+
+	/*
+	 * Find and register the interfaces.
+	 */
+	pata_icside_add_port(ae, easi_base, &pata_icside_portinfo_v6_1);
+	pata_icside_add_port(ae, easi_base, &pata_icside_portinfo_v6_2);
+
+	/*
+	 * FIXME: work around libata's aversion to calling port_disable.
+	 * This permanently disables interrupts on port 0 - bad luck if
+	 * you have a drive on that port.
+	 */
+	state->port[0].disabled = 1;
+
+	return icside_dma_init(ae, ec);
+
+ unmap_slot:
+	iounmap(ioc_base);
+ out:
+	return ret;
+}
+
+static int __devinit
+pata_icside_probe(struct expansion_card *ec, const struct ecard_id *id)
+{
+	struct pata_icside_state *state;
+	struct ata_probe_ent ae;
+	void __iomem *idmem;
+	int ret;
+
+	ret = ecard_request_resources(ec);
+	if (ret)
+		goto out;
+
+	state = kzalloc(sizeof(struct pata_icside_state), GFP_KERNEL);
+	if (!state) {
+		ret = -ENOMEM;
+		goto release;
+	}
+
+	state->type = ICS_TYPE_NOTYPE;
+	state->dma = NO_DMA;
+
+	idmem = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
+			ecard_resource_len(ec, ECARD_RES_IOCFAST));
+	if (idmem) {
+		unsigned int type;
+
+		type = readb(idmem + ICS_IDENT_OFFSET) & 1;
+		type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
+		type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
+		type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
+		iounmap(idmem);
+
+		state->type = type;
+	}
+
+	memset(&ae, 0, sizeof(ae));
+	INIT_LIST_HEAD(&ae.node);
+	ae.dev          = &ec->dev;
+	ae.port_ops     = &pata_icside_port_ops;
+	ae.sht          = &pata_icside_sht;
+	ae.pio_mask     = 0x1f;
+	ae.irq          = ec->irq;
+	ae.port_flags   = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST;
+	ae._host_flags  = ATA_HOST_SIMPLEX;
+	ae.private_data = state;
+
+	switch (state->type) {
+	case ICS_TYPE_A3IN:
+		dev_warn(&ec->dev, "A3IN unsupported\n");
+		ret = -ENODEV;
+		break;
+
+	case ICS_TYPE_A3USER:
+		dev_warn(&ec->dev, "A3USER unsupported\n");
+		ret = -ENODEV;
+		break;
+
+	case ICS_TYPE_V5:
+		ret = pata_icside_register_v5(&ae, ec);
+		break;
+
+	case ICS_TYPE_V6:
+		ret = pata_icside_register_v6(&ae, ec);
+		break;
+
+	default:
+		dev_warn(&ec->dev, "unknown interface type\n");
+		ret = -ENODEV;
+		break;
+	}
+
+	if (ret == 0)
+		ret = ata_device_add(&ae) == 0 ? -ENODEV : 0;
+
+	if (ret == 0)
+		goto out;
+
+	kfree(state);
+ release:
+	ecard_release_resources(ec);
+ out:
+	return ret;
+}
+
+static void pata_icside_shutdown(struct expansion_card *ec)
+{
+	struct ata_host *host = ecard_get_drvdata(ec);
+	unsigned long flags;
+
+	/*
+	 * Disable interrupts from this card.  We need to do
+	 * this before disabling EASI since we may be accessing
+	 * this register via that region.
+	 */
+	local_irq_save(flags);
+	if (ec->ops)
+		ec->ops->irqdisable(ec, ec->irq);
+	local_irq_restore(flags);
+
+	/*
+	 * Reset the ROM pointer so that we can read the ROM
+	 * after a soft reboot.  This also disables access to
+	 * the IDE taskfile via the EASI region.
+	 */
+	if (host) {
+		struct pata_icside_state *state = host->private_data;
+		if (state->ioc_base)
+			writeb(0, state->ioc_base);
+	}
+}
+
+static void __devexit pata_icside_remove(struct expansion_card *ec)
+{
+	struct ata_host *host = ecard_get_drvdata(ec);
+	struct pata_icside_state *state = host->private_data;
+
+	ata_host_detach(host);
+
+	pata_icside_shutdown(ec);
+
+	/*
+	 * don't NULL out the drvdata - devres/libata wants it
+	 * to free the ata_host structure.
+	 */
+	ec->ops = NULL;
+	ec->irq_data = NULL;
+
+	if (state->dma != NO_DMA)
+		free_dma(state->dma);
+	if (state->ioc_base)
+		iounmap(state->ioc_base);
+	if (state->ioc_base != state->irq_port)
+		iounmap(state->irq_port);
+
+	kfree(state);
+	ecard_release_resources(ec);
+}
+
+static const struct ecard_id pata_icside_ids[] = {
+	{ MANU_ICS,  PROD_ICS_IDE  },
+	{ MANU_ICS2, PROD_ICS2_IDE },
+	{ 0xffff, 0xffff }
+};
+
+static struct ecard_driver pata_icside_driver = {
+	.probe		= pata_icside_probe,
+	.remove 	= __devexit_p(pata_icside_remove),
+	.shutdown	= pata_icside_shutdown,
+	.id_table	= pata_icside_ids,
+	.drv = {
+		.name	= DRV_NAME,
+	},
+};
+
+static int __init pata_icside_init(void)
+{
+	return ecard_register_driver(&pata_icside_driver);
+}
+
+static void __exit pata_icside_exit(void)
+{
+	ecard_remove_driver(&pata_icside_driver);
+}
+
+MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ICS PATA driver");
+
+module_init(pata_icside_init);
+module_exit(pata_icside_exit);
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index c059b27fa88..873544ab598 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -852,9 +852,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
 {
 	struct pxa_i2c *i2c = &i2c_pxa;
 	struct resource *res;
-#ifdef CONFIG_I2C_PXA_SLAVE
 	struct i2c_pxa_platform_data *plat = dev->dev.platform_data;
-#endif
 	int ret;
 	int irq;
 
@@ -902,14 +900,14 @@ static int i2c_pxa_probe(struct platform_device *dev)
 		pxa_gpio_mode(GPIO117_I2CSCL_MD);
 		pxa_gpio_mode(GPIO118_I2CSDA_MD);
 #endif
-		pxa_set_cken(CKEN14_I2C, 1);
+		pxa_set_cken(CKEN_I2C, 1);
 		break;
 #ifdef CONFIG_PXA27x
 	case 1:
 		local_irq_disable();
 		PCFR |= PCFR_PI2CEN;
 		local_irq_enable();
-		pxa_set_cken(CKEN15_PWRI2C, 1);
+		pxa_set_cken(CKEN_PWRI2C, 1);
 #endif
 	}
 
@@ -924,6 +922,10 @@ static int i2c_pxa_probe(struct platform_device *dev)
 	i2c->adap.algo_data = i2c;
 	i2c->adap.dev.parent = &dev->dev;
 
+	if (plat) {
+		i2c->adap.class = plat->class;
+	}
+
 	ret = i2c_add_adapter(&i2c->adap);
 	if (ret < 0) {
 		printk(KERN_INFO "I2C: Failed to add bus\n");
@@ -946,11 +948,11 @@ eadapt:
 ereqirq:
 	switch (dev->id) {
 	case 0:
-		pxa_set_cken(CKEN14_I2C, 0);
+		pxa_set_cken(CKEN_I2C, 0);
 		break;
 #ifdef CONFIG_PXA27x
 	case 1:
-		pxa_set_cken(CKEN15_PWRI2C, 0);
+		pxa_set_cken(CKEN_PWRI2C, 0);
 		local_irq_disable();
 		PCFR &= ~PCFR_PI2CEN;
 		local_irq_enable();
@@ -973,11 +975,11 @@ static int i2c_pxa_remove(struct platform_device *dev)
 	free_irq(i2c->irq, i2c);
 	switch (dev->id) {
 	case 0:
-		pxa_set_cken(CKEN14_I2C, 0);
+		pxa_set_cken(CKEN_I2C, 0);
 		break;
 #ifdef CONFIG_PXA27x
 	case 1:
-		pxa_set_cken(CKEN15_PWRI2C, 0);
+		pxa_set_cken(CKEN_PWRI2C, 0);
 		local_irq_disable();
 		PCFR &= ~PCFR_PI2CEN;
 		local_irq_enable();
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index a98ff98fa56..d97d3864b57 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -368,14 +368,14 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		if (CLOCKRATE / clk > ios->clock)
 			clk <<= 1;
 		host->clkrt = fls(clk) - 1;
-		pxa_set_cken(CKEN12_MMC, 1);
+		pxa_set_cken(CKEN_MMC, 1);
 
 		/*
 		 * we write clkrt on the next command
 		 */
 	} else {
 		pxamci_stop_clock(host);
-		pxa_set_cken(CKEN12_MMC, 0);
+		pxa_set_cken(CKEN_MMC, 0);
 	}
 
 	if (host->power_mode != ios->power_mode) {
diff --git a/drivers/net/irda/pxaficp_ir.c b/drivers/net/irda/pxaficp_ir.c
index fb196fd9185..55ff0fbe525 100644
--- a/drivers/net/irda/pxaficp_ir.c
+++ b/drivers/net/irda/pxaficp_ir.c
@@ -134,7 +134,7 @@ static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
 			DCSR(si->rxdma) &= ~DCSR_RUN;
 			/* disable FICP */
 			ICCR0 = 0;
-			pxa_set_cken(CKEN13_FICP, 0);
+			pxa_set_cken(CKEN_FICP, 0);
 
 			/* set board transceiver to SIR mode */
 			si->pdata->transceiver_mode(si->dev, IR_SIRMODE);
@@ -144,7 +144,7 @@ static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
 			pxa_gpio_mode(GPIO47_STTXD_MD);
 
 			/* enable the STUART clock */
-			pxa_set_cken(CKEN5_STUART, 1);
+			pxa_set_cken(CKEN_STUART, 1);
 		}
 
 		/* disable STUART first */
@@ -169,7 +169,7 @@ static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
 		/* disable STUART */
 		STIER = 0;
 		STISR = 0;
-		pxa_set_cken(CKEN5_STUART, 0);
+		pxa_set_cken(CKEN_STUART, 0);
 
 		/* disable FICP first */
 		ICCR0 = 0;
@@ -182,7 +182,7 @@ static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
 		pxa_gpio_mode(GPIO47_ICPTXD_MD);
 
 		/* enable the FICP clock */
-		pxa_set_cken(CKEN13_FICP, 1);
+		pxa_set_cken(CKEN_FICP, 1);
 
 		si->speed = speed;
 		pxa_irda_fir_dma_rx_start(si);
@@ -593,7 +593,7 @@ static void pxa_irda_shutdown(struct pxa_irda *si)
 	/* disable STUART SIR mode */
 	STISR = 0;
 	/* disable the STUART clock */
-	pxa_set_cken(CKEN5_STUART, 0);
+	pxa_set_cken(CKEN_STUART, 0);
 
 	/* disable DMA */
 	DCSR(si->txdma) &= ~DCSR_RUN;
@@ -601,7 +601,7 @@ static void pxa_irda_shutdown(struct pxa_irda *si)
 	/* disable FICP */
 	ICCR0 = 0;
 	/* disable the FICP clock */
-	pxa_set_cken(CKEN13_FICP, 0);
+	pxa_set_cken(CKEN_FICP, 0);
 
 	DRCMR17 = 0;
 	DRCMR18 = 0;
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index f69bd097166..1a9a24b8263 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -48,6 +48,7 @@
 #include <linux/serial.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/serial.h>
+#include <linux/clk.h>
 
 #include <asm/io.h>
 
@@ -70,6 +71,7 @@
  */
 struct uart_amba_port {
 	struct uart_port	port;
+	struct clk		*clk;
 	struct amba_device	*dev;
 	struct amba_pl010_data	*data;
 	unsigned int		old_status;
@@ -77,73 +79,77 @@ struct uart_amba_port {
 
 static void pl010_stop_tx(struct uart_port *port)
 {
+	struct uart_amba_port *uap = (struct uart_amba_port *)port;
 	unsigned int cr;
 
-	cr = readb(port->membase + UART010_CR);
+	cr = readb(uap->port.membase + UART010_CR);
 	cr &= ~UART010_CR_TIE;
-	writel(cr, port->membase + UART010_CR);
+	writel(cr, uap->port.membase + UART010_CR);
 }
 
 static void pl010_start_tx(struct uart_port *port)
 {
+	struct uart_amba_port *uap = (struct uart_amba_port *)port;
 	unsigned int cr;
 
-	cr = readb(port->membase + UART010_CR);
+	cr = readb(uap->port.membase + UART010_CR);
 	cr |= UART010_CR_TIE;
-	writel(cr, port->membase + UART010_CR);
+	writel(cr, uap->port.membase + UART010_CR);
 }
 
 static void pl010_stop_rx(struct uart_port *port)
 {
+	struct uart_amba_port *uap = (struct uart_amba_port *)port;
 	unsigned int cr;
 
-	cr = readb(port->membase + UART010_CR);
+	cr = readb(uap->port.membase + UART010_CR);
 	cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
-	writel(cr, port->membase + UART010_CR);
+	writel(cr, uap->port.membase + UART010_CR);
 }
 
 static void pl010_enable_ms(struct uart_port *port)
 {
+	struct uart_amba_port *uap = (struct uart_amba_port *)port;
 	unsigned int cr;
 
-	cr = readb(port->membase + UART010_CR);
+	cr = readb(uap->port.membase + UART010_CR);
 	cr |= UART010_CR_MSIE;
-	writel(cr, port->membase + UART010_CR);
+	writel(cr, uap->port.membase + UART010_CR);
 }
 
-static void pl010_rx_chars(struct uart_port *port)
+static void pl010_rx_chars(struct uart_amba_port *uap)
 {
-	struct tty_struct *tty = port->info->tty;
+	struct tty_struct *tty = uap->port.info->tty;
 	unsigned int status, ch, flag, rsr, max_count = 256;
 
-	status = readb(port->membase + UART01x_FR);
+	status = readb(uap->port.membase + UART01x_FR);
 	while (UART_RX_DATA(status) && max_count--) {
-		ch = readb(port->membase + UART01x_DR);
+		ch = readb(uap->port.membase + UART01x_DR);
 		flag = TTY_NORMAL;
 
-		port->icount.rx++;
+		uap->port.icount.rx++;
 
 		/*
 		 * Note that the error handling code is
 		 * out of the main execution path
 		 */
-		rsr = readb(port->membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
+		rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
 		if (unlikely(rsr & UART01x_RSR_ANY)) {
-			writel(0, port->membase + UART01x_ECR);
+			writel(0, uap->port.membase + UART01x_ECR);
 
 			if (rsr & UART01x_RSR_BE) {
 				rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
-				port->icount.brk++;
-				if (uart_handle_break(port))
+				uap->port.icount.brk++;
+				if (uart_handle_break(&uap->port))
 					goto ignore_char;
 			} else if (rsr & UART01x_RSR_PE)
-				port->icount.parity++;
+				uap->port.icount.parity++;
 			else if (rsr & UART01x_RSR_FE)
-				port->icount.frame++;
+				uap->port.icount.frame++;
 			if (rsr & UART01x_RSR_OE)
-				port->icount.overrun++;
+				uap->port.icount.overrun++;
 
-			rsr &= port->read_status_mask;
+			rsr &= uap->port.read_status_mask;
 
 			if (rsr & UART01x_RSR_BE)
 				flag = TTY_BREAK;
@@ -153,53 +159,52 @@ static void pl010_rx_chars(struct uart_port *port)
 				flag = TTY_FRAME;
 		}
 
-		if (uart_handle_sysrq_char(port, ch))
+		if (uart_handle_sysrq_char(&uap->port, ch))
 			goto ignore_char;
 
-		uart_insert_char(port, rsr, UART01x_RSR_OE, ch, flag);
+		uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
 
 	ignore_char:
-		status = readb(port->membase + UART01x_FR);
+		status = readb(uap->port.membase + UART01x_FR);
 	}
 	tty_flip_buffer_push(tty);
 	return;
 }
 
-static void pl010_tx_chars(struct uart_port *port)
+static void pl010_tx_chars(struct uart_amba_port *uap)
 {
-	struct circ_buf *xmit = &port->info->xmit;
+	struct circ_buf *xmit = &uap->port.info->xmit;
 	int count;
 
-	if (port->x_char) {
-		writel(port->x_char, port->membase + UART01x_DR);
-		port->icount.tx++;
-		port->x_char = 0;
+	if (uap->port.x_char) {
+		writel(uap->port.x_char, uap->port.membase + UART01x_DR);
+		uap->port.icount.tx++;
+		uap->port.x_char = 0;
 		return;
 	}
-	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-		pl010_stop_tx(port);
+	if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {
+		pl010_stop_tx(&uap->port);
 		return;
 	}
 
-	count = port->fifosize >> 1;
+	count = uap->port.fifosize >> 1;
 	do {
-		writel(xmit->buf[xmit->tail], port->membase + UART01x_DR);
+		writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
+		uap->port.icount.tx++;
 		if (uart_circ_empty(xmit))
 			break;
 	} while (--count > 0);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(port);
+		uart_write_wakeup(&uap->port);
 
 	if (uart_circ_empty(xmit))
-		pl010_stop_tx(port);
+		pl010_stop_tx(&uap->port);
 }
 
-static void pl010_modem_status(struct uart_port *p