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//==========================================================================

//

//        pci1.c

//

//        Test PCI library API

//

//==========================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

// -------------------------------------------                              

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    

// for more details.                                                        

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//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

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// General Public License v2.                                               

//

// This exception does not invalidate any other reasons why a work based    

// on this file might be covered by the GNU General Public License.         

// -------------------------------------------                              

// ####ECOSGPLCOPYRIGHTEND####                                              

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):     jskov

// Contributors:  jskov

// Date:          1999-03-17

// Description:   Simple test that:

//                  Checks API (compile time)

//                  Prints out information about found PCI devices.

//                  Allocates resources to devices (but does not enable

//                  them).

//####DESCRIPTIONEND####

#include <pkgconf/system.h>

#include <cyg/infra/diag.h>             // diag_printf

#include <cyg/infra/testcase.h>         // test macros

#include <cyg/infra/cyg_ass.h>          // assertion macros

// Package requirements

#if defined(CYGPKG_IO_PCI) && defined(CYGPKG_KERNEL) && defined(CYGPKG_ISOINFRA)

#include <pkgconf/kernel.h>

#include <pkgconf/io_pci.h>

#include <cyg/io/pci.h>

#include <cyg/hal/hal_arch.h>

#include <string.h>

// Package option requirements

#if defined(CYGFUN_KERNEL_API_C) && defined(CYG_PCI_PRESENT)

#include <cyg/kernel/kapi.h>

// If the target has limited memory resources, undef the below to

// avoid inclusion of the big PCI code tables.

//

// The header file is created from http://www.yourvote.com/pci

// maintained by Jim Boemler (jboemler@halcyon.com).

//

// If you have PCI devices not listed in this list, please consider

// registering the codes in the database.

#define USE_PCI_CODE_LIST

#ifdef USE_PCI_CODE_LIST

#include "pcihdr.h"

#endif

// You may want to use this code to do some simple testing of the

// devices on the PCI bus. By enabling the below definition, the

// devices will get PCI IO and MEM access activated after configuration

// so you can play with IO registers and display/set contents of MEM.

#define nENABLE_PCI_DEVICES

unsigned char stack[CYGNUM_HAL_STACK_SIZE_TYPICAL];

cyg_thread thread_data;

cyg_handle_t thread_handle;

void pci_scan( void );

cyg_bool

pci_api_test(int dummy)

{

    cyg_pci_device dev_info;

    cyg_pci_device_id devid = CYG_PCI_NULL_DEVID;

    cyg_bool ret;

    CYG_PCI_ADDRESS64 mem_base = 0;

    CYG_PCI_ADDRESS32 io_base = 0;

    CYG_ADDRWORD vec;

    cyg_uint8 var_uint8;

    cyg_uint16 var_uint16;

    cyg_uint32 var_uint32;

    // Always return...

    if (dummy)

        return true;

    CYG_TEST_FAIL_FINISH("Not reached");

    // PCI library API

    cyg_pci_init();

    cyg_pci_get_device_info (devid, &dev_info);

    cyg_pci_set_device_info (devid, &dev_info);

    ret = cyg_pci_find_device(0, 0, &devid);

    ret |= cyg_pci_find_class(0, &devid);

    ret |= cyg_pci_find_next(devid, &devid);

    ret |= cyg_pci_configure_device(&dev_info);

    cyg_pci_set_memory_base(mem_base);

    cyg_pci_set_io_base(io_base);

    ret |= cyg_pci_allocate_memory(&dev_info, 0, &mem_base);

    ret |= cyg_pci_allocate_io(&dev_info, 0, &io_base);

    ret |= cyg_pci_translate_interrupt(&dev_info, &vec);

    cyg_pci_read_config_uint8(devid, 0, &var_uint8);

    cyg_pci_read_config_uint16(devid, 0, &var_uint16);

    cyg_pci_read_config_uint32(devid, 0, &var_uint32);

    cyg_pci_write_config_uint8(devid, 0, var_uint8);

    cyg_pci_write_config_uint16(devid, 0, var_uint16);

    cyg_pci_write_config_uint32(devid, 0, var_uint32);

    return ret;

}

void

pci_test( void )

{

    cyg_pci_device dev_info;

    cyg_pci_device_id devid;

    CYG_ADDRWORD irq;

    int i;

#ifdef USE_PCI_CODE_LIST

    cyg_bool no_match = false;

    cyg_uint16 vendor, device;

    cyg_uint8  bc, sc, pi;

    PCI_VENTABLE* vtbl;

    PCI_DEVTABLE* dtbl;

    PCI_CLASSCODETABLE* ctbl;

#endif

    pci_api_test(1);

    cyg_pci_init();

    diag_printf( "========== Finding and configuring devices\n" );

    if (cyg_pci_find_next(CYG_PCI_NULL_DEVID, &devid)) {

        do {

            // Get device info

            cyg_pci_get_device_info(devid, &dev_info);

            // Print stuff

            diag_printf("Found device on bus %d, devfn 0x%02x:\n",

                        CYG_PCI_DEV_GET_BUS(devid),

                        CYG_PCI_DEV_GET_DEVFN(devid));

            if (dev_info.command & CYG_PCI_CFG_COMMAND_ACTIVE) {

                diag_printf(" Note that board is active. Probed"

                            " sizes and CPU addresses invalid!\n");

            }

            // Configure the device

            if (cyg_pci_configure_device(&dev_info)) {

                diag_printf(" Device configuration succeeded\n");

#ifdef ENABLE_PCI_DEVICES

                {

                    cyg_uint16 cmd;

                    // Don't use cyg_pci_set_device_info since it clears

                    // some of the fields we want to print out below.

                    cyg_pci_read_config_uint16(dev_info.devid,

                                               CYG_PCI_CFG_COMMAND, &cmd);

                    cmd |= CYG_PCI_CFG_COMMAND_IO|CYG_PCI_CFG_COMMAND_MEMORY;

                    cyg_pci_write_config_uint16(dev_info.devid,

                                                CYG_PCI_CFG_COMMAND, cmd);

                }

                diag_printf(" **** Device IO and MEM access enabled\n");

#endif

            } else {

                diag_printf(" Device configuration failed");

                if (dev_info.command & CYG_PCI_CFG_COMMAND_ACTIVE)

                    diag_printf(" - device already enabled\n");

                else

                    diag_printf(" - resource problem\n");

            }

            diag_printf(" Vendor    0x%04x", dev_info.vendor);

#ifdef USE_PCI_CODE_LIST

            vendor = dev_info.vendor;

            vtbl = PciVenTable;

            for (i = 0; i < PCI_VENTABLE_LEN; i++, vtbl++)

                if (vendor == vtbl->VenId)

                    break;

            if (i < PCI_VENTABLE_LEN) {

                diag_printf(" [%s][%s]", vtbl->VenShort, vtbl->VenFull);

            } else {

                diag_printf(" [UNKNOWN]");

                no_match = true;

            }

#endif

            diag_printf("\n Device    0x%04x", dev_info.device);

#ifdef USE_PCI_CODE_LIST

            device = dev_info.device;

            dtbl = PciDevTable;

            for (i = 0; i < PCI_DEVTABLE_LEN; i++, dtbl++)

                if (vendor == dtbl->VenId && device == dtbl->DevId)

                    break;

            if (i < PCI_DEVTABLE_LEN) {

                diag_printf(" [%s][%s]", dtbl->Chip, dtbl->ChipDesc);

            } else {

                diag_printf(" [UNKNOWN]");

                no_match = true;

            }

#endif

            diag_printf("\n Command   0x%04x, Status 0x%04x\n",

                        dev_info.command, dev_info.status);

            diag_printf(" Class/Rev 0x%08x", dev_info.class_rev);

#ifdef USE_PCI_CODE_LIST

            bc = (dev_info.class_rev >> 24) & 0xff;

            sc = (dev_info.class_rev >> 16) & 0xff;

            pi = (dev_info.class_rev >>  8) & 0xff;

            ctbl = PciClassCodeTable;

            for (i = 0; i < PCI_CLASSCODETABLE_LEN; i++, ctbl++)

                if (bc == ctbl->BaseClass

                    && sc == ctbl->SubClass

                    && pi == ctbl->ProgIf)

                    break;

            if (i < PCI_CLASSCODETABLE_LEN) {

                diag_printf(" [%s][%s][%s]", ctbl->BaseDesc,

                            ctbl->SubDesc, ctbl->ProgDesc);

            } else {

                diag_printf(" [UNKNOWN]");

                no_match = true;

            }

#endif

            diag_printf("\n Header 0x%02x\n", dev_info.header_type);

            diag_printf(" SubVendor 0x%04x, Sub ID 0x%04x\n",

                        dev_info.header.normal.sub_vendor,

                        dev_info.header.normal.sub_id);

            for(i = 0; i < CYG_PCI_MAX_BAR; i++) {

                diag_printf(" BAR[%d]    0x%08x /", i, dev_info.base_address[i]);

                diag_printf(" probed size 0x%08x / CPU addr 0x%08x\n",

                            dev_info.base_size[i], dev_info.base_map[i]);

            }

            if (cyg_pci_translate_interrupt(&dev_info, &irq))

                diag_printf(" Wired to HAL vector %d\n", irq);

            else

                diag_printf(" Does not generate interrupts.\n");

        } while (cyg_pci_find_next(devid, &devid));

#ifdef USE_PCI_CODE_LIST

        diag_printf("\nStrings in [] are from the PCI Code List at http://www.yourvote.com/pci\n");

        if (no_match) {

            diag_printf("It seems that some of the device information has not been registered in\n");

            diag_printf("the PCI Code List. Please consider improving the database by registering\n");

            diag_printf("the [UNKNOWN] information for your devices. Thanks.\n");

        }

#endif

    } else {

        diag_printf("No PCI devices found.");

    }

    pci_scan();

    CYG_TEST_PASS_FINISH("pci1 test OK");

}

void

pci_scan( void )

{

    cyg_pci_device dev_info;

    cyg_pci_device_id devid;

    CYG_ADDRWORD irq;

    int i;

#ifdef USE_PCI_CODE_LIST

    cyg_bool no_match = false;

    cyg_uint16 vendor, device;

    cyg_uint8  bc, sc, pi;

    PCI_VENTABLE* vtbl;

    PCI_DEVTABLE* dtbl;

    PCI_CLASSCODETABLE* ctbl;

#endif

    diag_printf( "========== Scanning initialized devices\n" );

    if (cyg_pci_find_next(CYG_PCI_NULL_DEVID, &devid)) {

        do {

            // Since we are NOT about to configure the device, set the

            // devinfo record so we don't mistake garbage for data.

            memset( &dev_info, 0xAAAAAAAAu, sizeof( dev_info ) );

            // Get device info

            cyg_pci_get_device_info(devid, &dev_info);

            // Print stuff

            diag_printf("Found device on bus %d, devfn 0x%02x:\n",

                        CYG_PCI_DEV_GET_BUS(devid),

                        CYG_PCI_DEV_GET_DEVFN(devid));

            if (dev_info.command & CYG_PCI_CFG_COMMAND_ACTIVE) {

                diag_printf(" Note that board is active. Probed"

                            " sizes and CPU addresses invalid!\n");

            }

            diag_printf(" Vendor    0x%04x", dev_info.vendor);

#ifdef USE_PCI_CODE_LIST

            vendor = dev_info.vendor;

            vtbl = PciVenTable;

            for (i = 0; i < PCI_VENTABLE_LEN; i++, vtbl++)

                if (vendor == vtbl->VenId)

                    break;

            if (i < PCI_VENTABLE_LEN) {

                diag_printf(" [%s][%s]", vtbl->VenShort, vtbl->VenFull);

            } else {

                diag_printf(" [UNKNOWN]");

                no_match = true;

            }

#endif

            diag_printf("\n Device    0x%04x", dev_info.device);

#ifdef USE_PCI_CODE_LIST

            device = dev_info.device;

            dtbl = PciDevTable;

            for (i = 0; i < PCI_DEVTABLE_LEN; i++, dtbl++)

                if (vendor == dtbl->VenId && device == dtbl->DevId)

                    break;

            if (i < PCI_DEVTABLE_LEN) {

                diag_printf(" [%s][%s]", dtbl->Chip, dtbl->ChipDesc);

            } else {

                diag_printf(" [UNKNOWN]");

                no_match = true;

            }

#endif

            diag_printf("\n Command   0x%04x, Status 0x%04x\n",

                        dev_info.command, dev_info.status);

            diag_printf(" Class/Rev 0x%08x", dev_info.class_rev);

#ifdef USE_PCI_CODE_LIST

            bc = (dev_info.class_rev >> 24) & 0xff;

            sc = (dev_info.class_rev >> 16) & 0xff;

            pi = (dev_info.class_rev >>  8) & 0xff;

            ctbl = PciClassCodeTable;

            for (i = 0; i < PCI_CLASSCODETABLE_LEN; i++, ctbl++)

                if (bc == ctbl->BaseClass

                    && sc == ctbl->SubClass

                    && pi == ctbl->ProgIf)

                    break;

            if (i < PCI_CLASSCODETABLE_LEN) {

                diag_printf(" [%s][%s][%s]", ctbl->BaseDesc,

                            ctbl->SubDesc, ctbl->ProgDesc);

            } else {

                diag_printf(" [UNKNOWN]");

                no_match = true;

            }

#endif

            diag_printf("\n Header 0x%02x\n", dev_info.header_type);

            diag_printf(" SubVendor 0x%04x, Sub ID 0x%04x\n",

                        dev_info.header.normal.sub_vendor,

                        dev_info.header.normal.sub_id);

            for(i = 0; i < CYG_PCI_MAX_BAR; i++) {

                diag_printf(" BAR[%d]    0x%08x /", i, dev_info.base_address[i]);

                diag_printf(" probed size 0x%08x / CPU addr 0x%08x\n",

                            dev_info.base_size[i], dev_info.base_map[i]);

            }

            if (cyg_pci_translate_interrupt(&dev_info, &irq))

                diag_printf(" Wired to HAL vector %d\n", irq);

            else

                diag_printf(" Does not generate interrupts.\n");

        } while (cyg_pci_find_next(devid, &devid));

    } else {

        diag_printf("No PCI devices found.");

    }

}

void

cyg_start(void)

{

    CYG_TEST_INIT();

    cyg_thread_create(10,                   // Priority - just a number

                      (cyg_thread_entry_t*)pci_test,         // entry

                      0,                    // 

                      "pci_thread",     // Name

                      &stack[0],            // Stack

                      CYGNUM_HAL_STACK_SIZE_TYPICAL,           // Size

                      &thread_handle,       // Handle

                      &thread_data          // Thread data structure

        );

    cyg_thread_resume(thread_handle);

    cyg_scheduler_start();

}

#else // CYGFUN_KERNEL_API_C && CYG_PCI_PRESENT

#define N_A_MSG "Needs kernel C API & PCI platform support"

#endif

#else // CYGPKG_IO_PCI && CYGPKG_KERNEL

#define N_A_MSG "Needs IO/PCI, ISOINFRA, and Kernel"

#endif

#ifdef N_A_MSG

void

cyg_start( void )

{

    CYG_TEST_INIT();

    CYG_TEST_NA( N_A_MSG);

}

#endif // N_A_MSG

// EOF pci1.c