diff options
Diffstat (limited to 'arch/powerpc/sysdev/fsl_msi.h')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_msi.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/fsl_msi.h b/arch/powerpc/sysdev/fsl_msi.h new file mode 100644 index 0000000000..e2a1bfc7c2 --- /dev/null +++ b/arch/powerpc/sysdev/fsl_msi.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2007-2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: Tony Li <tony.li@freescale.com> + * Jason Jin <Jason.jin@freescale.com> + */ +#ifndef _POWERPC_SYSDEV_FSL_MSI_H +#define _POWERPC_SYSDEV_FSL_MSI_H + +#include <linux/of.h> +#include <asm/msi_bitmap.h> + +#define NR_MSI_REG_MSIIR 8 /* MSIIR can index 8 MSI registers */ +#define NR_MSI_REG_MSIIR1 16 /* MSIIR1 can index 16 MSI registers */ +#define NR_MSI_REG_MAX NR_MSI_REG_MSIIR1 +#define IRQS_PER_MSI_REG 32 +#define NR_MSI_IRQS_MAX (NR_MSI_REG_MAX * IRQS_PER_MSI_REG) + +#define FSL_PIC_IP_MASK 0x0000000F +#define FSL_PIC_IP_MPIC 0x00000001 +#define FSL_PIC_IP_IPIC 0x00000002 +#define FSL_PIC_IP_VMPIC 0x00000003 + +#define MSI_HW_ERRATA_ENDIAN 0x00000010 + +struct fsl_msi_cascade_data; + +struct fsl_msi { + struct irq_domain *irqhost; + + unsigned long cascade_irq; + + u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */ + u32 ibs_shift; /* Shift of interrupt bit select */ + u32 srs_shift; /* Shift of the shared interrupt register select */ + void __iomem *msi_regs; + u32 feature; + struct fsl_msi_cascade_data *cascade_array[NR_MSI_REG_MAX]; + + struct msi_bitmap bitmap; + + struct list_head list; /* support multiple MSI banks */ + + phandle phandle; +}; + +#endif /* _POWERPC_SYSDEV_FSL_MSI_H */ + |