[MIPS] TXx9: Make tx3927-specific code more independent

Make some TX3927 SoC specific code independent from board specific code.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

5 files changed, 196 insertions, 150 deletions

diff --git a/arch/mips/txx9/generic/Makefile b/arch/mips/txx9/generic/Makefile
index 9c120771e65f..57ed07bf030d 100644
--- a/arch/mips/txx9/generic/Makefile
+++ b/arch/mips/txx9/generic/Makefile
@@ -4,6 +4,7 @@
 
 obj-y   += setup.o
 obj-$(CONFIG_PCI)       += pci.o
+obj-$(CONFIG_SOC_TX3927)        += setup_tx3927.o irq_tx3927.o
 obj-$(CONFIG_SOC_TX4927)        += mem_tx4927.o setup_tx4927.o irq_tx4927.o
 obj-$(CONFIG_SOC_TX4938)        += mem_tx4927.o setup_tx4938.o irq_tx4938.o
 obj-$(CONFIG_TOSHIBA_FPCIB0)    += smsc_fdc37m81x.o
diff --git a/arch/mips/txx9/generic/irq_tx3927.c b/arch/mips/txx9/generic/irq_tx3927.c
new file mode 100644
index 000000000000..c683f593eda2
--- /dev/null
+++ b/arch/mips/txx9/generic/irq_tx3927.c
@@ -0,0 +1,25 @@
+/*
+ * Common tx3927 irq handler
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ */
+#include <linux/init.h>
+#include <asm/txx9irq.h>
+#include <asm/txx9/tx3927.h>
+
+void __init tx3927_irq_init(void)
+{
+        int i;
+
+        txx9_irq_init(TX3927_IRC_REG);
+        /* raise priority for timers, sio */
+        for (i = 0; i < TX3927_NR_TMR; i++)
+                txx9_irq_set_pri(TX3927_IR_TMR(i), 6);
+        for (i = 0; i < TX3927_NR_SIO; i++)
+                txx9_irq_set_pri(TX3927_IR_SIO(i), 7);
+}
diff --git a/arch/mips/txx9/generic/setup_tx3927.c b/arch/mips/txx9/generic/setup_tx3927.c
new file mode 100644
index 000000000000..0d09a0ff71e3
--- /dev/null
+++ b/arch/mips/txx9/generic/setup_tx3927.c
@@ -0,0 +1,141 @@
+/*
+ * TX3927 setup routines
+ * Based on linux/arch/mips/txx9/jmr3927/setup.c
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/serial_core.h>
+#include <linux/param.h>
+#include <asm/mipsregs.h>
+#include <asm/txx9irq.h>
+#include <asm/txx9tmr.h>
+#include <asm/txx9pio.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/tx3927.h>
+
+void __init tx3927_wdt_init(void)
+{
+        txx9_wdt_init(TX3927_TMR_REG(2));
+}
+
+void __init tx3927_setup(void)
+{
+        int i;
+        unsigned int conf;
+
+        /* don't enable - see errata */
+        txx9_ccfg_toeon = 0;
+        if (strstr(prom_getcmdline(), "toeon") != NULL)
+                txx9_ccfg_toeon = 1;
+
+        txx9_reg_res_init(TX3927_REV_PCODE(), TX3927_REG_BASE,
+                          TX3927_REG_SIZE);
+
+        /* SDRAMC,ROMC are configured by PROM */
+        for (i = 0; i < 8; i++) {
+                if (!(tx3927_romcptr->cr[i] & 0x8))
+                        continue;       /* disabled */
+                txx9_ce_res[i].start = (unsigned long)TX3927_ROMC_BA(i);
+                txx9_ce_res[i].end =
+                        txx9_ce_res[i].start + TX3927_ROMC_SIZE(i) - 1;
+                request_resource(&iomem_resource, &txx9_ce_res[i]);
+        }
+
+        /* clocks */
+        txx9_gbus_clock = txx9_cpu_clock / 2;
+        /* change default value to udelay/mdelay take reasonable time */
+        loops_per_jiffy = txx9_cpu_clock / HZ / 2;
+
+        /* CCFG */
+        /* enable Timeout BusError */
+        if (txx9_ccfg_toeon)
+                tx3927_ccfgptr->ccfg |= TX3927_CCFG_TOE;
+
+        /* clear BusErrorOnWrite flag */
+        tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW;
+        if (read_c0_conf() & TX39_CONF_WBON)
+                /* Disable PCI snoop */
+                tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP;
+        else
+                /* Enable PCI SNOOP - with write through only */
+                tx3927_ccfgptr->ccfg |= TX3927_CCFG_PSNP;
+        /* do reset on watchdog */
+        tx3927_ccfgptr->ccfg |= TX3927_CCFG_WR;
+
+        printk(KERN_INFO "TX3927 -- CRIR:%08lx CCFG:%08lx PCFG:%08lx\n",
+               tx3927_ccfgptr->crir,
+               tx3927_ccfgptr->ccfg, tx3927_ccfgptr->pcfg);
+
+        /* TMR */
+        for (i = 0; i < TX3927_NR_TMR; i++)
+                txx9_tmr_init(TX3927_TMR_REG(i));
+
+        /* DMA */
+        tx3927_dmaptr->mcr = 0;
+        for (i = 0; i < ARRAY_SIZE(tx3927_dmaptr->ch); i++) {
+                /* reset channel */
+                tx3927_dmaptr->ch[i].ccr = TX3927_DMA_CCR_CHRST;
+                tx3927_dmaptr->ch[i].ccr = 0;
+        }
+        /* enable DMA */
+#ifdef __BIG_ENDIAN
+        tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN;
+#else
+        tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE;
+#endif
+
+        /* PIO */
+        __raw_writel(0, &tx3927_pioptr->maskcpu);
+        __raw_writel(0, &tx3927_pioptr->maskext);
+        txx9_gpio_init(TX3927_PIO_REG, 0, 16);
+
+        conf = read_c0_conf();
+        if (!(conf & TX39_CONF_ICE))
+                printk(KERN_INFO "TX3927 I-Cache disabled.\n");
+        if (!(conf & TX39_CONF_DCE))
+                printk(KERN_INFO "TX3927 D-Cache disabled.\n");
+        else if (!(conf & TX39_CONF_WBON))
+                printk(KERN_INFO "TX3927 D-Cache WriteThrough.\n");
+        else if (!(conf & TX39_CONF_CWFON))
+                printk(KERN_INFO "TX3927 D-Cache WriteBack.\n");
+        else
+                printk(KERN_INFO "TX3927 D-Cache WriteBack (CWF) .\n");
+}
+
+void __init tx3927_time_init(unsigned int evt_tmrnr, unsigned int src_tmrnr)
+{
+        txx9_clockevent_init(TX3927_TMR_REG(evt_tmrnr),
+                             TXX9_IRQ_BASE + TX3927_IR_TMR(evt_tmrnr),
+                             TXX9_IMCLK);
+        txx9_clocksource_init(TX3927_TMR_REG(src_tmrnr), TXX9_IMCLK);
+}
+
+void __init tx3927_setup_serial(unsigned int cts_mask)
+{
+#ifdef CONFIG_SERIAL_TXX9
+        int i;
+        struct uart_port req;
+
+        for (i = 0; i < 2; i++) {
+                memset(&req, 0, sizeof(req));
+                req.line = i;
+                req.iotype = UPIO_MEM;
+                req.membase = (unsigned char __iomem *)TX3927_SIO_REG(i);
+                req.mapbase = TX3927_SIO_REG(i);
+                req.irq = TXX9_IRQ_BASE + TX3927_IR_SIO(i);
+                if (!((1 << i) & cts_mask))
+                        req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
+                req.uartclk = TXX9_IMCLK;
+                early_serial_txx9_setup(&req);
+        }
+#endif /* CONFIG_SERIAL_TXX9 */
+}
diff --git a/arch/mips/txx9/jmr3927/irq.c b/arch/mips/txx9/jmr3927/irq.c
index f3b60233e99d..68f74368ddec 100644
--- a/arch/mips/txx9/jmr3927/irq.c
+++ b/arch/mips/txx9/jmr3927/irq.c
@@ -46,13 +46,6 @@
 #error JMR3927_IRQ_END > NR_IRQS
 #endif
 
-static unsigned char irc_level[TX3927_NUM_IR] = {
-        5, 5, 5, 5, 5, 5,       /* INT[5:0] */
-        7, 7,                   /* SIO */
-        5, 5, 5, 0, 0,          /* DMA, PIO, PCI */
-        6, 6, 6                 /* TMR */
-};
-
 /*
  * CP0_STATUS is a thread's resource (saved/restored on context switch).
  * So disable_irq/enable_irq MUST handle IOC/IRC registers.
@@ -103,10 +96,18 @@ static int jmr3927_irq_dispatch(int pending)
         return irq;
 }
 
-static void __init jmr3927_irq_init(void);
+static struct irq_chip jmr3927_irq_ioc = {
+        .name = "jmr3927_ioc",
+        .ack = mask_irq_ioc,
+        .mask = mask_irq_ioc,
+        .mask_ack = mask_irq_ioc,
+        .unmask = unmask_irq_ioc,
+};
 
 void __init jmr3927_irq_setup(void)
 {
+        int i;
+
         txx9_irq_dispatch = jmr3927_irq_dispatch;
         /* Now, interrupt control disabled, */
         /* all IRC interrupts are masked, */
@@ -122,30 +123,10 @@ void __init jmr3927_irq_setup(void)
         /* clear PCI Reset interrupts */
         jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
 
-        jmr3927_irq_init();
+        tx3927_irq_init();
+        for (i = JMR3927_IRQ_IOC; i < JMR3927_IRQ_IOC + JMR3927_NR_IRQ_IOC; i++)
+                set_irq_chip_and_handler(i, &jmr3927_irq_ioc, handle_level_irq);
 
         /* setup IOC interrupt 1 (PCI, MODEM) */
         set_irq_chained_handler(JMR3927_IRQ_IOCINT, handle_simple_irq);
-
-        /* enable all CPU interrupt bits. */
-        set_c0_status(ST0_IM);  /* IE bit is still 0. */
-}
-
-static struct irq_chip jmr3927_irq_ioc = {
-        .name = "jmr3927_ioc",
-        .ack = mask_irq_ioc,
-        .mask = mask_irq_ioc,
-        .mask_ack = mask_irq_ioc,
-        .unmask = unmask_irq_ioc,
-};
-
-static void __init jmr3927_irq_init(void)
-{
-        u32 i;
-
-        txx9_irq_init(TX3927_IRC_REG);
-        for (i = 0; i < TXx9_MAX_IR; i++)
-                txx9_irq_set_pri(i, irc_level[i]);
-        for (i = JMR3927_IRQ_IOC; i < JMR3927_IRQ_IOC + JMR3927_NR_IRQ_IOC; i++)
-                set_irq_chip_and_handler(i, &jmr3927_irq_ioc, handle_level_irq);
 }
diff --git a/arch/mips/txx9/jmr3927/setup.c b/arch/mips/txx9/jmr3927/setup.c
index ae34e9a4a8ac..7378a835d4e3 100644
--- a/arch/mips/txx9/jmr3927/setup.c
+++ b/arch/mips/txx9/jmr3927/setup.c
@@ -34,20 +34,13 @@
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
-#ifdef CONFIG_SERIAL_TXX9
-#include <linux/serial_core.h>
-#endif
-#include <asm/txx9tmr.h>
-#include <asm/txx9pio.h>
 #include <asm/reboot.h>
+#include <asm/txx9pio.h>
 #include <asm/txx9/generic.h>
 #include <asm/txx9/pci.h>
 #include <asm/txx9/jmr3927.h>
 #include <asm/mipsregs.h>
 
-/* don't enable - see errata */
-static int jmr3927_ccfg_toeon;
-
 static void jmr3927_machine_restart(char *command)
 {
         local_irq_disable();
@@ -65,10 +58,7 @@ static void jmr3927_machine_restart(char *command)
 
 static void __init jmr3927_time_init(void)
 {
-        txx9_clockevent_init(TX3927_TMR_REG(0),
-                             JMR3927_IRQ_IRC_TMR(0),
-                             JMR3927_IMCLK);
-        txx9_clocksource_init(TX3927_TMR_REG(1), JMR3927_IMCLK);
+        tx3927_time_init(0, 1);
 }
 
 #define DO_WRITE_THROUGH
@@ -118,34 +108,12 @@ static void __init jmr3927_mem_setup(void)
         jmr3927_board_init();
 
         argptr = prom_getcmdline();
-
-        if ((argptr = strstr(argptr, "toeon")) != NULL)
-                jmr3927_ccfg_toeon = 1;
-        argptr = prom_getcmdline();
         if ((argptr = strstr(argptr, "ip=")) == NULL) {
                 argptr = prom_getcmdline();
                 strcat(argptr, " ip=bootp");
         }
 
-#ifdef CONFIG_SERIAL_TXX9
-        {
-                extern int early_serial_txx9_setup(struct uart_port *port);
-                int i;
-                struct uart_port req;
-                for(i = 0; i < 2; i++) {
-                        memset(&req, 0, sizeof(req));
-                        req.line = i;
-                        req.iotype = UPIO_MEM;
-                        req.membase = (unsigned char __iomem *)TX3927_SIO_REG(i);
-                        req.mapbase = TX3927_SIO_REG(i);
-                        req.irq = i == 0 ?
-                                JMR3927_IRQ_IRC_SIO0 : JMR3927_IRQ_IRC_SIO1;
-                        if (i == 0)
-                                req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
-                        req.uartclk = JMR3927_IMCLK;
-                        early_serial_txx9_setup(&req);
-                }
-        }
+        tx3927_setup_serial(1 << 1); /* ch1: noCTS */
 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
         argptr = prom_getcmdline();
         if ((argptr = strstr(argptr, "console=")) == NULL) {
@@ -153,11 +121,8 @@ static void __init jmr3927_mem_setup(void)
                 strcat(argptr, " console=ttyS1,115200");
         }
 #endif
-#endif
 }
 
-static void tx3927_setup(void);
-
 static void __init jmr3927_pci_setup(void)
 {
 #ifdef CONFIG_PCI
@@ -184,27 +149,7 @@ static void __init jmr3927_pci_setup(void)
 
 static void __init jmr3927_board_init(void)
 {
-        tx3927_setup();
-        jmr3927_pci_setup();
-
-        /* SIO0 DTR on */
-        jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR);
-
-        jmr3927_led_set(0);
-
-        printk("JMR-TX3927 (Rev %d) --- IOC(Rev %d) DIPSW:%d,%d,%d,%d\n",
-               jmr3927_ioc_reg_in(JMR3927_IOC_BREV_ADDR) & JMR3927_REV_MASK,
-               jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR) & JMR3927_REV_MASK,
-               jmr3927_dipsw1(), jmr3927_dipsw2(),
-               jmr3927_dipsw3(), jmr3927_dipsw4());
-}
-
-static void __init tx3927_setup(void)
-{
-        int i;
-
         txx9_cpu_clock = JMR3927_CORECLK;
-        txx9_gbus_clock = JMR3927_GBUSCLK;
         /* SDRAMC are configured by PROM */
 
         /* ROMC */
@@ -213,74 +158,32 @@ static void __init tx3927_setup(void)
         tx3927_romcptr->cr[3] = JMR3927_ROMCE3 | 0x0003f698;
         tx3927_romcptr->cr[5] = JMR3927_ROMCE5 | 0x0000f218;
 
-        /* CCFG */
-        /* enable Timeout BusError */
-        if (jmr3927_ccfg_toeon)
-                tx3927_ccfgptr->ccfg |= TX3927_CCFG_TOE;
-
-        /* clear BusErrorOnWrite flag */
-        tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW;
-        /* Disable PCI snoop */
-        tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP;
-        /* do reset on watchdog */
-        tx3927_ccfgptr->ccfg |= TX3927_CCFG_WR;
-
-#ifdef DO_WRITE_THROUGH
-        /* Enable PCI SNOOP - with write through only */
-        tx3927_ccfgptr->ccfg |= TX3927_CCFG_PSNP;
-#endif
-
         /* Pin selection */
         tx3927_ccfgptr->pcfg &= ~TX3927_PCFG_SELALL;
         tx3927_ccfgptr->pcfg |=
                 TX3927_PCFG_SELSIOC(0) | TX3927_PCFG_SELSIO_ALL |
                 (TX3927_PCFG_SELDMA_ALL & ~TX3927_PCFG_SELDMA(1));
 
-        printk("TX3927 -- CRIR:%08lx CCFG:%08lx PCFG:%08lx\n",
-               tx3927_ccfgptr->crir,
-               tx3927_ccfgptr->ccfg, tx3927_ccfgptr->pcfg);
-
-        /* TMR */
-        for (i = 0; i < TX3927_NR_TMR; i++)
-                txx9_tmr_init(TX3927_TMR_REG(i));
-
-        /* DMA */
-        tx3927_dmaptr->mcr = 0;
-        for (i = 0; i < ARRAY_SIZE(tx3927_dmaptr->ch); i++) {
-                /* reset channel */
-                tx3927_dmaptr->ch[i].ccr = TX3927_DMA_CCR_CHRST;
-                tx3927_dmaptr->ch[i].ccr = 0;
-        }
-        /* enable DMA */
-#ifdef __BIG_ENDIAN
-        tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN;
-#else
-        tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE;
-#endif
+        tx3927_setup();
 
-        /* PIO */
         /* PIO[15:12] connected to LEDs */
         __raw_writel(0x0000f000, &tx3927_pioptr->dir);
-        __raw_writel(0, &tx3927_pioptr->maskcpu);
-        __raw_writel(0, &tx3927_pioptr->maskext);
-        txx9_gpio_init(TX3927_PIO_REG, 0, 16);
         gpio_request(11, "dipsw1");
         gpio_request(10, "dipsw2");
-        {
-                unsigned int conf;
 
-        conf = read_c0_conf();
-               if (!(conf & TX39_CONF_ICE))
-                       printk("TX3927 I-Cache disabled.\n");
-               if (!(conf & TX39_CONF_DCE))
-                       printk("TX3927 D-Cache disabled.\n");
-               else if (!(conf & TX39_CONF_WBON))
-                       printk("TX3927 D-Cache WriteThrough.\n");
-               else if (!(conf & TX39_CONF_CWFON))
-                       printk("TX3927 D-Cache WriteBack.\n");
-               else
-                       printk("TX3927 D-Cache WriteBack (CWF) .\n");
-        }
+        jmr3927_pci_setup();
+
+        /* SIO0 DTR on */
+        jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR);
+
+        jmr3927_led_set(0);
+
+        printk(KERN_INFO
+               "JMR-TX3927 (Rev %d) --- IOC(Rev %d) DIPSW:%d,%d,%d,%d\n",
+               jmr3927_ioc_reg_in(JMR3927_IOC_BREV_ADDR) & JMR3927_REV_MASK,
+               jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR) & JMR3927_REV_MASK,
+               jmr3927_dipsw1(), jmr3927_dipsw2(),
+               jmr3927_dipsw3(), jmr3927_dipsw4());
 }
 
 /* This trick makes rtc-ds1742 driver usable as is. */
@@ -308,11 +211,6 @@ static int __init jmr3927_rtc_init(void)
         return IS_ERR(dev) ? PTR_ERR(dev) : 0;
 }
 
-static void __init tx3927_wdt_init(void)
-{
-        txx9_wdt_init(TX3927_TMR_REG(2));
-}
-
 static void __init jmr3927_device_init(void)
 {
         __swizzle_addr_b = jmr3927_swizzle_addr_b;