summaryrefslogtreecommitdiffstats
path: root/c/src/lib/libbsp/powerpc/beatnik/pci/pci_io_remap.c
diff options
context:
space:
mode:
Diffstat (limited to 'c/src/lib/libbsp/powerpc/beatnik/pci/pci_io_remap.c')
-rw-r--r--c/src/lib/libbsp/powerpc/beatnik/pci/pci_io_remap.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/c/src/lib/libbsp/powerpc/beatnik/pci/pci_io_remap.c b/c/src/lib/libbsp/powerpc/beatnik/pci/pci_io_remap.c
deleted file mode 100644
index 56118d01d5..0000000000
--- a/c/src/lib/libbsp/powerpc/beatnik/pci/pci_io_remap.c
+++ /dev/null
@@ -1,203 +0,0 @@
-/* Adjust a PCI bus range's I/O address space by adding an offset */
-
-/*
- * Authorship
- * ----------
- * This software ('beatnik' RTEMS BSP for MVME6100 and MVME5500) was
- * created by Till Straumann <strauman@slac.stanford.edu>, 2005-2007,
- * Stanford Linear Accelerator Center, Stanford University.
- *
- * Acknowledgement of sponsorship
- * ------------------------------
- * The 'beatnik' BSP was produced by
- * the Stanford Linear Accelerator Center, Stanford University,
- * under Contract DE-AC03-76SFO0515 with the Department of Energy.
- *
- * Government disclaimer of liability
- * ----------------------------------
- * Neither the United States nor the United States Department of Energy,
- * nor any of their employees, makes any warranty, express or implied, or
- * assumes any legal liability or responsibility for the accuracy,
- * completeness, or usefulness of any data, apparatus, product, or process
- * disclosed, or represents that its use would not infringe privately owned
- * rights.
- *
- * Stanford disclaimer of liability
- * --------------------------------
- * Stanford University makes no representations or warranties, express or
- * implied, nor assumes any liability for the use of this software.
- *
- * Stanford disclaimer of copyright
- * --------------------------------
- * Stanford University, owner of the copyright, hereby disclaims its
- * copyright and all other rights in this software. Hence, anyone may
- * freely use it for any purpose without restriction.
- *
- * Maintenance of notices
- * ----------------------
- * In the interest of clarity regarding the origin and status of this
- * SLAC software, this and all the preceding Stanford University notices
- * are to remain affixed to any copy or derivative of this software made
- * or distributed by the recipient and are to be affixed to any copy of
- * software made or distributed by the recipient that contains a copy or
- * derivative of this software.
- *
- * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03
- */
-
-#include <rtems.h>
-#include <rtems/bspIo.h>
-#include <bsp/pci.h>
-#include <stdint.h>
-#include "pci_io_remap.h"
-
-#ifndef PCI_MULTI_FUN
-#define PCI_MULTI_FUN 0x80
-#endif
-
-#ifndef PCI_HEADER_TYPE_MSK
-#define PCI_HEADER_TYPE_MSK 0x7f
-#endif
-
-/* Reconfigure all I/O base address registers for a range of PCI busses
- * (from and including 'bus_from' up to and not including 'bus_to').
- * adding an offset. This involves adjusting the base and limit registers
- * of PCI-PCI bridges, too.
- *
- * RESTRICTIONS: 'offset' must be 4k aligned (PCI req.); no argument check
- * on the bus numbers is done.
- *
- * RETURNS: 0 on success and a number > 0 indicating the number of
- * non-32bit bridges found where the offset couldn't be added.
- * Devices behind such a bridge are not accessible through I/O
- * and should probably be switched off (not done by this code).
- */
-int
-rtems_pci_io_remap(int bus_from, int bus_to, uint32_t offset)
-{
- int rval = 0;
- int bus, dev, fun, maxf;
- int bar, numBars = 0;
- uint8_t b;
- uint16_t s;
- uint32_t d;
- unsigned int bas, lim;
-
- if ( offset & ((1<<12)-1) ) {
- rtems_panic("rtems_pci_io_remap(): offset must be 4k aligned");
- return -1;
- }
-
-
- for ( bus=bus_from; bus < bus_to; bus++ ) {
- for ( dev = 0; dev<PCI_MAX_DEVICES; dev++ ) {
-
- maxf = 1;
-
- for ( fun = 0; fun < maxf; fun++ ) {
- pci_read_config_word( bus, dev, fun, PCI_VENDOR_ID, &s );
- if ( 0xffff == s )
- continue;
-
- pci_read_config_byte( bus, dev, fun, PCI_HEADER_TYPE, &b );
-
- /* readjust the max. function number to scan if this is a multi-function
- * device.
- */
- if ( 0 == fun && (PCI_MULTI_FUN & b) )
- maxf = PCI_MAX_FUNCTIONS;
-
- /* Check the header type; panic if unknown.
- * header type 0 has 6 bars, header type 1 (PCI-PCI bridge) has 2
- */
- b &= PCI_HEADER_TYPE_MSK;
- switch ( b ) {
- default:
- printk("PCI header type %i (@%i/%i/%i)\n", b, bus, dev, fun);
- rtems_panic("rtems_pci_io_remap(): unknown PCI header type");
- return -1; /* keep compiler happy */
-
- case PCI_HEADER_TYPE_CARDBUS:
- printk("PCI header type %i (@%i/%i/%i)\n", b, bus, dev, fun);
- rtems_panic("rtems_pci_io_remap(): don't know how to deal with Cardbus bridge");
- return -1;
-
- case PCI_HEADER_TYPE_NORMAL:
- numBars = 6*4; /* loop below counts reg. offset in bytes */
- break;
-
- case PCI_HEADER_TYPE_BRIDGE:
- numBars = 2*4; /* loop below counts reg. offset in bytes */
- break;
-
- }
-
- for ( bar = 0; bar < numBars; bar+=4 ) {
- pci_read_config_dword( bus, dev, fun, PCI_BASE_ADDRESS_0 + bar, &d );
- if ( PCI_BASE_ADDRESS_SPACE_IO & d ) {
- /* It's an I/O BAR; remap */
- d &= PCI_BASE_ADDRESS_IO_MASK;
- if ( d ) {
- /* IO bar was configured; add offset */
- d += offset;
- pci_write_config_dword( bus, dev, fun, PCI_BASE_ADDRESS_0 + bar, d );
- }
- } else {
- /* skip upper half of 64-bit window */
- d &= PCI_BASE_ADDRESS_MEM_TYPE_MASK;
- if ( PCI_BASE_ADDRESS_MEM_TYPE_64 == d )
- bar+=4;
- }
- }
-
- /* Now it's time to deal with bridges */
- if ( PCI_HEADER_TYPE_BRIDGE == b ) {
- /* must adjust the limit registers */
- pci_read_config_byte( bus, dev, fun, PCI_IO_LIMIT, &b );
- pci_read_config_word( bus, dev, fun, PCI_IO_LIMIT_UPPER16, &s );
- lim = (s<<16) + (( b & PCI_IO_RANGE_MASK ) << 8);
- lim += offset;
-
- pci_read_config_byte( bus, dev, fun, PCI_IO_BASE, &b );
- pci_read_config_word( bus, dev, fun, PCI_IO_BASE_UPPER16, &s );
- bas = (s<<16) + (( b & PCI_IO_RANGE_MASK ) << 8);
- bas += offset;
-
- b &= PCI_IO_RANGE_TYPE_MASK;
- switch ( b ) {
- default:
- printk("Unknown IO range type 0x%x (@%i/%i/%i)\n", b, bus, dev, fun);
- rtems_panic("rtems_pci_io_remap(): unknown IO range type");
- return -1;
-
- case PCI_IO_RANGE_TYPE_16:
- if ( bas > 0xffff || lim > 0xffff ) {
- printk("PCI I/O range type 1 (16bit) bridge (@%i/%i/%i) found:\n", bus, dev, fun);
- printk("WARNING: base (0x%08x) or limit (0x%08x) exceed 16-bit;\n", bas, lim);
- printk(" devices behind this bridge are NOT accessible!\n");
-
- /* FIXME: should we disable devices behind this bridge ? */
- bas = lim = 0;
- }
- break;
-
- case PCI_IO_RANGE_TYPE_32:
- break;
- }
-
- b = (uint8_t)((bas>>8) & PCI_IO_RANGE_MASK);
- pci_write_config_byte( bus, dev, fun, PCI_IO_BASE, b );
-
- s = (uint16_t)((bas>>16)&0xffff);
- pci_write_config_word( bus, dev, fun, PCI_IO_BASE_UPPER16, s);
-
- b = (uint8_t)((lim>>8) & PCI_IO_RANGE_MASK);
- pci_write_config_byte( bus, dev, fun, PCI_IO_LIMIT, b );
- s = (uint16_t)((lim>>16)&0xffff);
- pci_write_config_word( bus, dev, fun, PCI_IO_LIMIT_UPPER16, s );
- }
- }
- }
- }
- return rval;
-}