Mercurial > ecos
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 |
| parents | |
| children | e0c0827131d1 |
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new file mode 100644 --- /dev/null +++ b/packages/hal/arm/integrator/current/include/plf_io.h @@ -0,0 +1,362 @@ +#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
