4f9569132f
Update the build rules in saibcm-modules to use the 5.10 kernel instead of searching for the 4.19 kernel. In addition, some code changes were done to get it to compile. The main categories of such changes are as follows: * For /proc files, `struct file_operations` has been replaced with `struct proc_ops`. * Y2038 changes to use the new APIs, since `do_gettimeofday()` is no longer available. * Minor changes in how external kernel module symbols are read by modpost. Signed-off-by: Saikrishna Arcot <sarcot@microsoft.com>
98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
/*! \file ngbde_pio.c
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*
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* API for managing and accessing memory-mapped I/O for switch
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* registers.
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*
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*/
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/*
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* $Copyright: Copyright 2018-2021 Broadcom. All rights reserved.
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* The term 'Broadcom' refers to Broadcom Inc. and/or its subsidiaries.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* A copy of the GNU General Public License version 2 (GPLv2) can
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* be found in the LICENSES folder.$
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*/
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#include <ngbde.h>
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void *
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ngbde_pio_map(void *devh, phys_addr_t addr, phys_addr_t size)
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{
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struct ngbde_dev_s *sd = (struct ngbde_dev_s *)devh;
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if (sd->pio_mem) {
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if (addr == sd->pio_win.addr && size == sd->pio_win.size) {
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/* Already mapped */
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return sd->pio_mem;
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}
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ngbde_pio_unmap(devh);
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}
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sd->pio_mem = ioremap(addr, size);
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if (sd->pio_mem) {
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/* Save mapped resources */
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sd->pio_win.addr = addr;
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sd->pio_win.size = size;
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} else {
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printk(KERN_WARNING "%s: Unable to map address 0x%08lu\n",
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MOD_NAME, (unsigned long)addr);
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}
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return sd->pio_mem;
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}
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void
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ngbde_pio_unmap(void *devh)
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{
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struct ngbde_dev_s *sd = (struct ngbde_dev_s *)devh;
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if (sd->pio_mem) {
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iounmap(sd->pio_mem);
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sd->pio_mem = NULL;
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}
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}
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void
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ngbde_pio_cleanup(void)
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{
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struct ngbde_dev_s *swdev, *sd;
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unsigned int num_swdev, idx;
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ngbde_swdev_get_all(&swdev, &num_swdev);
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for (idx = 0; idx < num_swdev; idx++) {
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sd = ngbde_swdev_get(idx);
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ngbde_pio_unmap(sd);
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}
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}
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void
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ngbde_pio_write32(void *devh, uint32_t offs, uint32_t val)
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{
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struct ngbde_dev_s *sd = (struct ngbde_dev_s *)devh;
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if (sd->pio_mem) {
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NGBDE_IOWRITE32(val, sd->pio_mem + offs);
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}
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}
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uint32_t
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ngbde_pio_read32(void *devh, uint32_t offs)
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{
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struct ngbde_dev_s *sd = (struct ngbde_dev_s *)devh;
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if (sd->pio_mem) {
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return NGBDE_IOREAD32(sd->pio_mem + offs);
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}
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return 0;
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}
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