diff packages/hal/arm/integrator/current/include/plf_io.h @ 195:67850532eebb

Merge from eCos master repository on 2001-11-02-06:43:03-GMT
author jlarmour
date Fri, 02 Nov 2001 16:12:33 +0000
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children e0c0827131d1
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+++ b/packages/hal/arm/integrator/current/include/plf_io.h
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+#ifndef CYGONCE_PLF_IO_H
+#define CYGONCE_PLF_IO_H
+
+//=============================================================================
+//
+//      plf_io.h
+//
+//      Platform specific IO support
+//
+//=============================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//=============================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):    Philippe Robin
+// Contributors: David A Rusling
+// Date:         November 7, 2000
+// Purpose:      Integrator PCI IO support macros
+// Description: 
+// Usage:        #include <cyg/hal/plf_io.h>
+//
+//####DESCRIPTIONEND####
+//
+//=============================================================================
+
+#include <pkgconf/hal_arm_integrator.h>
+
+#include <cyg/hal/hal_integrator.h>
+
+#include <cyg/hal/hal_io.h>             // IO macros
+#include <cyg/hal/hal_platform_ints.h>  // Interrupt vectors
+
+// Initialization of the PCI bus.
+#define HAL_PCI_INIT()                                                  	\
+    CYG_MACRO_START                                                     	\
+    volatile int i, j;								\
+										\
+    /* setting this register will take the V3 out of reset */			\
+										\
+    *(cyg_uint32 *)(INTEGRATOR_SC_PCIENABLE) = 1;				\
+										\
+    /* wait a few usecs to settle the device and the PCI bus */			\
+										\
+    for (i = 0; i < 100 ; i++)							\
+	   j = i + 1;								\
+										\
+    /* Now write the Base I/O Address Word to V3_BASE + 0x6C */			\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_LB_IO_BASE) = (cyg_uint16)(V3_BASE >> 16);	\
+										\
+    do {									\
+        *(cyg_uint8 *)(V3_BASE + V3_MAIL_DATA) = 0xAA;				\
+	*(cyg_uint8 *)(V3_BASE + V3_MAIL_DATA + 4) = 0x55;			\
+    } while (*(cyg_uint8 *)(V3_BASE + V3_MAIL_DATA) != 0xAA ||			\
+	     *(cyg_uint8 *)(V3_BASE + V3_MAIL_DATA + 4) != 0x55);		\
+										\
+    /* Make sure that V3 register access is not locked, if it is, unlock it */	\
+										\
+    if ((*(cyg_uint16 *)(V3_BASE + V3_SYSTEM) & V3_SYSTEM_M_LOCK)  		\
+				== V3_SYSTEM_M_LOCK)				\
+	*(cyg_uint16 *)(V3_BASE + V3_SYSTEM) = 0xA05F;				\
+										\
+    /* Ensure that the slave accesses from PCI are disabled while we */		\
+    /* setup windows */								\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_PCI_CMD) &= 					\
+				~(V3_COMMAND_M_MEM_EN | V3_COMMAND_M_IO_EN);	\
+										\
+    /* Clear RST_OUT to 0; keep the PCI bus in reset until we've finished */	\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_SYSTEM) &= ~V3_SYSTEM_M_RST_OUT;		\
+										\
+    /* Make all accesses from PCI space retry until we're ready for them */	\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_PCI_CFG) |= V3_PCI_CFG_M_RETRY_EN;		\
+										\
+    /* Set up any V3 PCI Configuration Registers that we absolutely have to */	\
+    /* LB_CFG controls Local Bus protocol. */					\
+    /* Enable LocalBus byte strobes for READ accesses too. */			\
+    /* set bit 7 BE_IMODE and bit 6 BE_OMODE */					\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_LB_CFG) |= 0x0C0;				\
+										\
+    /* PCI_CMD controls overall PCI operation. */				\
+    /* Enable PCI bus master. */						\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_PCI_CMD) |= 0x04;				\
+										\
+    /* PCI_MAP0 controls where the PCI to CPU memory window is on Local Bus*/	\
+										\
+    *(cyg_uint32 *)(V3_BASE + V3_PCI_MAP0) = (INTEGRATOR_BOOT_ROM_BASE) |	\
+					(V3_PCI_MAP_M_ADR_SIZE_512M |		\
+					V3_PCI_MAP_M_REG_EN |			\
+					V3_PCI_MAP_M_ENABLE);			\
+										\
+    /* PCI_BASE0 is the PCI address of the start of the window */		\
+										\
+    *(cyg_uint32 *)(V3_BASE + V3_PCI_BASE0) = INTEGRATOR_BOOT_ROM_BASE;		\
+										\
+    /* PCI_MAP1 is LOCAL address of the start of the window */			\
+										\
+    *(cyg_uint32 *)(V3_BASE + V3_PCI_MAP1) = (INTEGRATOR_HDR0_SDRAM_BASE) |	\
+			(V3_PCI_MAP_M_ADR_SIZE_1024M | V3_PCI_MAP_M_REG_EN |	\
+			 V3_PCI_MAP_M_ENABLE);					\
+										\
+    /* PCI_BASE1 is the PCI address of the start of the window */		\
+										\
+    *(cyg_uint32 *)(V3_BASE + V3_PCI_BASE1) = INTEGRATOR_HDR0_SDRAM_BASE;	\
+										\
+    /* Set up the windows from local bus memory into PCI configuration, */	\
+    /* I/O and Memory. */							\
+    /* PCI I/O, LB_BASE2 and LB_MAP2 are used exclusively for this. */		\
+										\
+    *(cyg_uint16 *)(V3_BASE +V3_LB_BASE2) = 					\
+			((CPU_PCI_IO_ADRS >> 24) << 8) | V3_LB_BASE_M_ENABLE;	\
+    *(cyg_uint16 *)(V3_BASE + V3_LB_MAP2) = 0;					\
+										\
+    /* PCI Configuration, use LB_BASE1/LB_MAP1. */				\
+										\
+    /* PCI Memory use LB_BASE0/LB_MAP0 and LB_BASE1/LB_MAP1 */			\
+    /* Map first 256Mbytes as non-prefetchable via BASE0/MAP0 */		\
+    /* (INTEGRATOR_PCI_BASE == PCI_MEM_BASE) */					\
+										\
+    *(cyg_uint32 *)(V3_BASE + V3_LB_BASE0) = 					\
+			INTEGRATOR_PCI_BASE | (0x80 | V3_LB_BASE_M_ENABLE);	\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_LB_MAP0) = 					\
+			((INTEGRATOR_PCI_BASE >> 20) << 0x4) | 0x0006;		\
+										\
+    /* Map second 256 Mbytes as prefetchable via BASE1/MAP1 */			\
+										\
+    *(cyg_uint32 *)(V3_BASE + V3_LB_BASE1) = 					\
+			INTEGRATOR_PCI_BASE | (0x84 | V3_LB_BASE_M_ENABLE);	\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_LB_MAP1) = 					\
+			(((INTEGRATOR_PCI_BASE + SZ_256M) >> 20) << 4) | 0x0006;\
+										\
+    /* Allow accesses to PCI Configuration space */				\
+    /* and set up A1, A0 for type 1 config cycles */				\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_PCI_CFG) = 					\
+			((*(cyg_uint16 *)(V3_BASE + V3_PCI_CFG)) &		\
+			   ~(V3_PCI_CFG_M_RETRY_EN | V3_PCI_CFG_M_AD_LOW1) ) |	\
+			   V3_PCI_CFG_M_AD_LOW0;				\
+										\
+    /* now we can allow in PCI MEMORY accesses */				\
+										\
+    *(cyg_uint16 *)(V3_BASE + V3_PCI_CMD) = 					\
+		(*(cyg_uint16 *)(V3_BASE + V3_PCI_CMD)) | V3_COMMAND_M_MEM_EN;	\
+										\
+    /* Set RST_OUT to take the PCI bus is out of reset, PCI devices can */	\
+    /* initialise and lock the V3 system register so that no one else */	\
+    /* can play with it */							\
+										\
+   *(cyg_uint16 *)(V3_BASE + V3_SYSTEM) = 					\
+		(*(cyg_uint16 *)(V3_BASE + V3_SYSTEM)) | V3_SYSTEM_M_RST_OUT;	\
+										\
+   *(cyg_uint16 *)(V3_BASE + V3_SYSTEM) = 					\
+		(*(cyg_uint16 *)(V3_BASE + V3_SYSTEM)) | V3_SYSTEM_M_LOCK;	\
+                                                                         	\
+    CYG_MACRO_END
+
+
+// V3 access routines
+#define _V3Write16(o,v) (*(volatile cyg_uint16 *)(PCI_V3_BASE + (cyg_uint32)(o)) \
+					 = (cyg_uint16)(v))
+#define _V3Read16(o)    (*(volatile cyg_uint16 *)(PCI_V3_BASE + (cyg_uint32)(o)))
+
+#define _V3Write32(o,v) (*(volatile cyg_uint32 *)(PCI_V3_BASE + (cyg_uint32)(o)) \
+					= (cyg_uint32)(v))
+#define _V3Read32(o)    (*(volatile cyg_uint32 *)(PCI_V3_BASE + (cyg_uint32)(o)))
+
+// _V3OpenConfigWindow - open V3 configuration window
+#define _V3OpenConfigWindow() 							\
+    {										\
+    /* Set up base0 to see all 512Mbytes of memory space (not	     */		\
+    /* prefetchable), this frees up base1 for re-use by configuration*/		\
+    /* memory */								\
+										\
+    _V3Write32 (V3_LB_BASE0, ((INTEGRATOR_PCI_BASE & 0xFFF00000) |		\
+			     0x90 | V3_LB_BASE_M_ENABLE));			\
+    /* Set up base1 to point into configuration space, note that MAP1 */	\
+    /* register is set up by pciMakeConfigAddress(). */				\
+										\
+    _V3Write32 (V3_LB_BASE1, ((CPU_PCI_CNFG_ADRS & 0xFFF00000) |		\
+			     0x40 | V3_LB_BASE_M_ENABLE));			\
+    }
+
+// _V3CloseConfigWindow - close V3 configuration window
+#define _V3CloseConfigWindow()							\
+    {										\
+    /* Reassign base1 for use by prefetchable PCI memory */			\
+    _V3Write32 (V3_LB_BASE1, (((INTEGRATOR_PCI_BASE + SZ_256M) & 0xFFF00000)	\
+					| 0x84 | V3_LB_BASE_M_ENABLE));		\
+    _V3Write16 (V3_LB_MAP1,							\
+	    (((INTEGRATOR_PCI_BASE + SZ_256M) & 0xFFF00000) >> 16) | 0x0006);	\
+										\
+    /* And shrink base0 back to a 256M window (NOTE: MAP0 already correct) */	\
+										\
+    _V3Write32 (V3_LB_BASE0, ((INTEGRATOR_PCI_BASE & 0xFFF00000) |		\
+			     0x80 | V3_LB_BASE_M_ENABLE));			\
+    }
+
+// Compute address necessary to access PCI config space for the given
+// bus and device.
+#define HAL_PCI_CONFIG_ADDRESS( __bus, __devfn, __offset ) \
+    ({                                                                   		\
+    cyg_uint32 __address, __devicebit;							\
+    cyg_uint16 __mapaddress;								\
+    cyg_uint32 __dev = CYG_PCI_DEV_GET_DEV(__devfn);	/* FIXME to check!! (slot?) */	\
+											\
+    if (__bus == 0) {									\
+	/* local bus segment so need a type 0 config cycle */				\
+        /* build the PCI configuration "address" with one-hot in A31-A11 */		\
+        __address = PCI_CONFIG_BASE;							\
+        __address |= ((__devfn & 0x07) << 8);						\
+        __address |= __offset & 0xFF;							\
+        __mapaddress = 0x000A;    /* 101=>config cycle, 0=>A1=A0=0 */			\
+        __devicebit = (1 << (__dev + 11));						\
+											\
+        if ((__devicebit & 0xFF000000) != 0) {						\
+            /* high order bits are handled by the MAP register */			\
+            __mapaddress |= (__devicebit >> 16);					\
+        } else {									\
+            /* low order bits handled directly in the address */			\
+            __address |= __devicebit;							\
+        }										\
+    } else {	/* bus !=0 */								\
+        /* not the local bus segment so need a type 1 config cycle */			\
+        /* A31-A24 are don't care (so clear to 0) */					\
+        __mapaddress = 0x000B;    /* 101=>config cycle, 1=>A1&A0 from PCI_CFG */	\
+        __address = PCI_CONFIG_BASE;							\
+        __address |= ((__bus & 0xFF) << 16);  	/* bits 23..16 = bus number 	*/	\
+        __address |= ((__dev & 0x1F) << 11);  	/* bits 15..11 = device number  */	\
+        __address |= ((__devfn & 0x07) << 8);  	/* bits 10..8  = function number*/	\
+        __address |= __offset & 0xFF;  		/* bits  7..0  = register number*/	\
+    }											\
+    _V3Write16(V3_LB_MAP1, __mapaddress);						\
+											\
+    __address;										\
+    })
+
+// Read a value from the PCI configuration space of the appropriate
+// size at an address composed from the bus, devfn and offset.
+#define HAL_PCI_CFG_READ_UINT8( __bus, __devfn, __offset, __val )  		\
+    {										\
+    _V3OpenConfigWindow();							\
+    __val = *(cyg_uint8 *)HAL_PCI_CONFIG_ADDRESS(__bus, __devfn, __offset); 	\
+    _V3CloseConfigWindow();							\
+    }
+
+#define HAL_PCI_CFG_READ_UINT16( __bus, __devfn, __offset, __val )  		\
+    {										\
+    _V3OpenConfigWindow();							\
+    __val = *(cyg_uint16 *)HAL_PCI_CONFIG_ADDRESS(__bus, __devfn, __offset); 	\
+    _V3CloseConfigWindow();							\
+    }
+
+#define HAL_PCI_CFG_READ_UINT32( __bus, __devfn, __offset, __val )  		\
+    {										\
+    _V3OpenConfigWindow();							\
+    __val = *(cyg_uint32 *)HAL_PCI_CONFIG_ADDRESS(__bus, __devfn, __offset); 	\
+    _V3CloseConfigWindow();							\
+    }
+
+// Write a value to the PCI configuration space of the appropriate
+// size at an address composed from the bus, devfn and offset.
+#define HAL_PCI_CFG_WRITE_UINT8( __bus, __devfn, __offset, __val )		\
+    {										\
+    _V3OpenConfigWindow();							\
+    *(cyg_uint8 *)HAL_PCI_CONFIG_ADDRESS(__bus, __devfn, __offset) = __val; 	\
+    _V3CloseConfigWindow();							\
+    }
+
+#define HAL_PCI_CFG_WRITE_UINT16( __bus, __devfn, __offset, __val )		\
+    {										\
+    _V3OpenConfigWindow();							\
+    *(cyg_uint16 *)HAL_PCI_CONFIG_ADDRESS(__bus, __devfn, __offset) = __val; 	\
+    _V3CloseConfigWindow();							\
+    }
+
+#define HAL_PCI_CFG_WRITE_UINT32( __bus, __devfn, __offset, __val )		\
+    {										\
+    _V3OpenConfigWindow();							\
+    *(cyg_uint32 *)HAL_PCI_CONFIG_ADDRESS(__bus, __devfn, __offset) = __val; 	\
+    _V3CloseConfigWindow();							\
+    }
+
+//-----------------------------------------------------------------------------
+// Resources
+
+// Map PCI device resources starting from these addresses in PCI space.
+#define HAL_PCI_ALLOC_BASE_MEMORY 0
+#define HAL_PCI_ALLOC_BASE_IO     0x4000
+
+// This is where the PCI spaces are mapped in the CPU's address space.
+#define HAL_PCI_PHYSICAL_MEMORY_BASE    (PCI_MEM_BASE)
+#define HAL_PCI_PHYSICAL_IO_BASE        (PCI_IO_BASE)
+
+// Translate the PCI interrupt requested by the device (INTA#, INTB#,
+// INTC# or INTD#) to the associated CPU interrupt (i.e., HAL vector).
+#define INTA CYGNUM_HAL_INTERRUPT_PCIINT0
+#define INTB CYGNUM_HAL_INTERRUPT_PCIINT1
+#define INTC CYGNUM_HAL_INTERRUPT_PCIINT2
+#define INTD CYGNUM_HAL_INTERRUPT_PCIINT3
+
+#define HAL_PCI_TRANSLATE_INTERRUPT( __bus, __devfn, __vec, __valid)          \
+    CYG_MACRO_START                                                           \
+    cyg_uint8 __req;                                                          \
+    cyg_uint32 __dev;							      \
+    /* DANGER! For now this is the SDM interrupt table... */	      	      \
+    static const cyg_uint8 irq_tab[12][4] = {	      			      \
+		/* INTA  INTB  INTC  INTD */				      \
+		{INTA, INTB, INTC, INTD},  /* idsel 20, slot  9 */	      \
+		{INTB, INTC, INTD, INTA},  /* idsel 21, slot 10 */	      \
+		{INTC, INTD, INTA, INTB},  /* idsel 22, slot 11 */	      \
+		{INTD, INTA, INTB, INTC},  /* idsel 23, slot 12 */	      \
+		{INTA, INTB, INTC, INTD},  /* idsel 24, slot 13 */	      \
+		{INTB, INTC, INTD, INTA},  /* idsel 25, slot 14 */	      \
+		{INTC, INTD, INTA, INTB},  /* idsel 26, slot 15 */	      \
+		{INTD, INTA, INTB, INTC},  /* idsel 27, slot 16 */	      \
+		{INTA, INTB, INTC, INTD},  /* idsel 28, slot 17 */	      \
+		{INTB, INTC, INTD, INTA},  /* idsel 29, slot 18 */	      \
+		{INTC, INTD, INTA, INTB},  /* idsel 30, slot 19 */	      \
+		{INTD, INTA, INTB, INTC}   /* idsel 31, slot 20 */	      \
+    };								      	      \
+    HAL_PCI_CFG_READ_UINT8(__bus, __devfn, CYG_PCI_CFG_INT_PIN, __req);       \
+    __dev  = CYG_PCI_DEV_GET_DEV(__devfn);	/* FIXME to check!! (slot?)*/ \
+									      \
+    /* if PIN = 0, default to A */					      \
+    if (__req == 0)							      \
+	__req = 1;							      \
+									      \
+    __vec = irq_tab[__dev - 9][__req - 1];				      \
+    __valid = true;                                                           \
+    CYG_MACRO_END
+
+//-----------------------------------------------------------------------------
+// end of plf_io.h
+#endif // CYGONCE_PLF_IO_H