tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2007-2008 Freescale Semiconductor, Inc. All rights reserved.
3 *
4 * Author: Tony Li <tony.li@freescale.com>
5 * Jason Jin <Jason.jin@freescale.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; version 2 of the
10 * License.
11 *
12 */
13#ifndef _POWERPC_SYSDEV_FSL_MSI_H
14#define _POWERPC_SYSDEV_FSL_MSI_H
15
16#include <linux/of.h>
17#include <asm/msi_bitmap.h>
18
19#define NR_MSI_REG_MSIIR 8 /* MSIIR can index 8 MSI registers */
20#define NR_MSI_REG_MSIIR1 16 /* MSIIR1 can index 16 MSI registers */
21#define NR_MSI_REG_MAX NR_MSI_REG_MSIIR1
22#define IRQS_PER_MSI_REG 32
23#define NR_MSI_IRQS_MAX (NR_MSI_REG_MAX * IRQS_PER_MSI_REG)
24
25#define FSL_PIC_IP_MASK 0x0000000F
26#define FSL_PIC_IP_MPIC 0x00000001
27#define FSL_PIC_IP_IPIC 0x00000002
28#define FSL_PIC_IP_VMPIC 0x00000003
29
30struct fsl_msi {
31 struct irq_domain *irqhost;
32
33 unsigned long cascade_irq;
34
35 u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */
36 u32 ibs_shift; /* Shift of interrupt bit select */
37 u32 srs_shift; /* Shift of the shared interrupt register select */
38 void __iomem *msi_regs;
39 u32 feature;
40 int msi_virqs[NR_MSI_REG_MAX];
41
42 struct msi_bitmap bitmap;
43
44 struct list_head list; /* support multiple MSI banks */
45
46 phandle phandle;
47};
48
49#endif /* _POWERPC_SYSDEV_FSL_MSI_H */
50