Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 166 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ixp2000/platform.h b/include/asm-arm/arch-ixp2000/platform.h
new file mode 100644
index 00000000000..509e44d528d
--- /dev/null
+++ b/include/asm-arm/arch-ixp2000/platform.h
@@ -0,0 +1,166 @@
+/*
+ * include/asm-arm/arch-ixp2000/platform.h
+ *
+ * Various bits of code used by platform-level code.
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2004 (c) MontaVista Software, Inc. 
+ * 
+ * This file is licensed under  the terms of the GNU General Public 
+ * License version 2. This program is licensed "as is" without any 
+ * warranty of any kind, whether express or implied.
+ */
+
+
+#ifndef __ASSEMBLY__
+
+/*
+ * The IXP2400 B0 silicon contains an erratum (#66) that causes writes
+ * to on-chip I/O register to not complete fully. What this means is
+ * that if you have a write to on-chip I/O followed by a back-to-back
+ * read or write, the first write will happen twice. OR...if it's
+ * not a back-to-back transaction, the read or write will generate
+ * incorrect data.
+ *
+ * The official work around for this is to set the on-chip I/O regions
+ * as XCB=101 and then force a read-back from the register.
+ *
+ */
+#if defined(CONFIG_ARCH_ENP2611) || defined(CONFIG_ARCH_IXDP2400) || defined(CONFIG_ARCH_IXDP2401)
+
+#include <asm/system.h>		/* Pickup local_irq_ functions */
+
+static inline void ixp2000_reg_write(volatile unsigned long *reg, unsigned long val)
+{
+	volatile unsigned long dummy;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	*reg = val;
+	barrier();
+	dummy = *reg;
+	local_irq_restore(flags);
+}
+#else
+#define	ixp2000_reg_write(reg, val) (*reg = val)
+#endif	/* IXDP2400 || IXDP2401 */
+
+/*
+ * Boards may multiplex different devices on the 2nd channel of 
+ * the slowport interface that each need different configuration 
+ * settings.  For example, the IXDP2400 uses channel 2 on the interface 
+ * to access the CPLD, the switch fabric card, and the media card.  Each
+ * one needs a different mode so drivers must save/restore the mode 
+ * before and after each operation.  
+ *
+ * acquire_slowport(&your_config);
+ * ...
+ * do slowport operations
+ * ...
+ * release_slowport();
+ *
+ * Note that while you have the slowport, you are holding a spinlock,
+ * so your code should be written as if you explicitly acquired a lock.
+ *
+ * The configuration only affects device 2 on the slowport, so the
+ * MTD map driver does not acquire/release the slowport.  
+ */
+struct slowport_cfg {
+	unsigned long CCR;	/* Clock divide */
+	unsigned long WTC;	/* Write Timing Control */
+	unsigned long RTC;	/* Read Timing Control */
+	unsigned long PCR;	/* Protocol Control Register */
+	unsigned long ADC;	/* Address/Data Width Control */
+};
+
+
+void ixp2000_acquire_slowport(struct slowport_cfg *, struct slowport_cfg *);
+void ixp2000_release_slowport(struct slowport_cfg *);
+
+/*
+ * IXP2400 A0/A1 and  IXP2800 A0/A1/A2 have broken slowport that requires
+ * tweaking of addresses in the MTD driver.
+ */
+static inline unsigned ixp2000_has_broken_slowport(void)
+{
+	unsigned long id = *IXP2000_PROD_ID;
+	unsigned long id_prod = id & (IXP2000_MAJ_PROD_TYPE_MASK |
+				      IXP2000_MIN_PROD_TYPE_MASK);
+	return (((id_prod ==
+		  /* fixed in IXP2400-B0 */
+		  (IXP2000_MAJ_PROD_TYPE_IXP2000 |
+		   IXP2000_MIN_PROD_TYPE_IXP2400)) &&
+		 ((id & IXP2000_MAJ_REV_MASK) == 0)) ||
+		((id_prod ==
+		  /* fixed in IXP2800-B0 */
+		  (IXP2000_MAJ_PROD_TYPE_IXP2000 |
+		   IXP2000_MIN_PROD_TYPE_IXP2800)) &&
+		 ((id & IXP2000_MAJ_REV_MASK) == 0)) ||
+		((id_prod ==
+		  /* fixed in IXP2850-B0 */
+		  (IXP2000_MAJ_PROD_TYPE_IXP2000 |
+		   IXP2000_MIN_PROD_TYPE_IXP2850)) &&
+		 ((id & IXP2000_MAJ_REV_MASK) == 0)));
+}
+
+static inline unsigned int ixp2000_has_flash(void)
+{
+	return ((*IXP2000_STRAP_OPTIONS) & (CFG_BOOT_PROM));
+}
+
+static inline unsigned int ixp2000_is_pcimaster(void)
+{
+	return ((*IXP2000_STRAP_OPTIONS) & (CFG_PCI_BOOT_HOST));
+}
+
+void ixp2000_map_io(void);
+void ixp2000_init_irq(void);
+void ixp2000_init_time(unsigned long);
+unsigned long ixp2000_gettimeoffset(void);
+
+struct pci_sys_data;
+
+void ixp2000_pci_preinit(void);
+int ixp2000_pci_setup(int, struct pci_sys_data*);
+struct pci_bus* ixp2000_pci_scan_bus(int, struct pci_sys_data*);
+int ixp2000_pci_read_config(struct pci_bus*, unsigned int, int, int, u32 *);
+int ixp2000_pci_write_config(struct pci_bus*, unsigned int, int, int, u32);
+
+/*
+ * Several of the IXP2000 systems have banked flash so we need to extend the
+ * flash_platform_data structure with some private pointers
+ */
+struct ixp2000_flash_data {
+	struct flash_platform_data *platform_data;
+	int nr_banks;
+	unsigned long (*bank_setup)(unsigned long);
+};
+
+/*
+ * GPIO helper functions
+ */
+#define	GPIO_IN		0
+#define	GPIO_OUT	1
+
+extern void gpio_line_config(int line, int style);
+
+static inline int gpio_line_get(int line)
+{
+	return (((*IXP2000_GPIO_PLR) >> line) & 1);
+}
+
+static inline void gpio_line_set(int line, int value)
+{
+	if (value) 
+		ixp2000_reg_write(IXP2000_GPIO_POSR, (1 << line));
+	else 
+		ixp2000_reg_write(IXP2000_GPIO_POCR, (1 << line));
+}
+
+struct ixp2000_i2c_pins {
+	unsigned long sda_pin;
+	unsigned long scl_pin;
+};
+
+#endif /*  !__ASSEMBLY__ */