diff options
Diffstat (limited to 'arch/parisc/kernel/drivers.c')
| -rw-r--r-- | arch/parisc/kernel/drivers.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c index 5eb979d04b90..3b330e58a4f0 100644 --- a/arch/parisc/kernel/drivers.c +++ b/arch/parisc/kernel/drivers.c @@ -1,11 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * drivers.c * - * This program 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 Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * * Copyright (c) 1999 The Puffin Group * Copyright (c) 2001 Matthew Wilcox for Hewlett Packard * Copyright (c) 2001 Helge Deller <deller@gmx.de> @@ -38,9 +34,10 @@ #include <asm/io.h> #include <asm/pdc.h> #include <asm/parisc-device.h> +#include <asm/ropes.h> /* See comments in include/asm-parisc/pci.h */ -const struct dma_map_ops *hppa_dma_ops __read_mostly; +const struct dma_map_ops *hppa_dma_ops __ro_after_init; EXPORT_SYMBOL(hppa_dma_ops); static struct device root = { @@ -257,6 +254,30 @@ static struct parisc_device *find_device_by_addr(unsigned long hpa) return ret ? d.dev : NULL; } +static int __init is_IKE_device(struct device *dev, void *data) +{ + struct parisc_device *pdev = to_parisc_device(dev); + + if (!check_dev(dev)) + return 0; + if (pdev->id.hw_type != HPHW_BCPORT) + return 0; + if (IS_IKE(pdev) || + (pdev->id.hversion == REO_MERCED_PORT) || + (pdev->id.hversion == REOG_MERCED_PORT)) { + return 1; + } + return 0; +} + +int __init machine_has_merced_bus(void) +{ + int ret; + + ret = for_each_padev(is_IKE_device, NULL); + return ret ? 1 : 0; +} + /** * find_pa_parent_type - Find a parent of a specific type * @dev: The device to start searching from |