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Subject[PATCH v2 02/12] MIPS: GIC: Generate redirect block accessors
Date
From: Paul Burton <paulburton@kernel.org>

With CM 3.5 the "core-other" register block evolves into the "redirect"
register block, which is capable of accessing not only the core local
registers of other cores but also the shared/global registers of other
clusters.

This patch generates accessor functions for shared/global registers
accessed via the redirect block, with "redir_" inserted after "gic_" in
their names. For example the accessor function:

read_gic_config()

...accesses the GIC_CONFIG register of the GIC in the local cluster.
With this patch a new function:

read_gic_redir_config()

...is added which accesses the GIC_CONFIG register of the GIC in
whichever cluster the GCR_CL_REDIRECT register is configured to access.

This mirrors the similar redirect block accessors already provided for
the CM & CPC.

Signed-off-by: Paul Burton <paulburton@kernel.org>
Signed-off-by: Chao-ying Fu <cfu@wavecomp.com>
Signed-off-by: Dragan Mladjenovic <dragan.mladjenovic@syrmia.com>

diff --git a/arch/mips/include/asm/mips-gic.h b/arch/mips/include/asm/mips-gic.h
index 084cac1c5ea2..fd9da5e3beaa 100644
--- a/arch/mips/include/asm/mips-gic.h
+++ b/arch/mips/include/asm/mips-gic.h
@@ -28,11 +28,13 @@ extern void __iomem *mips_gic_base;

/* For read-only shared registers */
#define GIC_ACCESSOR_RO(sz, off, name) \
- CPS_ACCESSOR_RO(gic, sz, MIPS_GIC_SHARED_OFS + off, name)
+ CPS_ACCESSOR_RO(gic, sz, MIPS_GIC_SHARED_OFS + off, name) \
+ CPS_ACCESSOR_RO(gic, sz, MIPS_GIC_REDIR_OFS + off, redir_##name)

/* For read-write shared registers */
#define GIC_ACCESSOR_RW(sz, off, name) \
- CPS_ACCESSOR_RW(gic, sz, MIPS_GIC_SHARED_OFS + off, name)
+ CPS_ACCESSOR_RW(gic, sz, MIPS_GIC_SHARED_OFS + off, name) \
+ CPS_ACCESSOR_RW(gic, sz, MIPS_GIC_REDIR_OFS + off, redir_##name)

/* For read-only local registers */
#define GIC_VX_ACCESSOR_RO(sz, off, name) \
@@ -45,7 +47,7 @@ extern void __iomem *mips_gic_base;
CPS_ACCESSOR_RW(gic, sz, MIPS_GIC_REDIR_OFS + off, vo_##name)

/* For read-only shared per-interrupt registers */
-#define GIC_ACCESSOR_RO_INTR_REG(sz, off, stride, name) \
+#define _GIC_ACCESSOR_RO_INTR_REG(sz, off, stride, name) \
static inline void __iomem *addr_gic_##name(unsigned int intr) \
{ \
return mips_gic_base + (off) + (intr * (stride)); \
@@ -58,8 +60,8 @@ static inline unsigned int read_gic_##name(unsigned int intr) \
}

/* For read-write shared per-interrupt registers */
-#define GIC_ACCESSOR_RW_INTR_REG(sz, off, stride, name) \
- GIC_ACCESSOR_RO_INTR_REG(sz, off, stride, name) \
+#define _GIC_ACCESSOR_RW_INTR_REG(sz, off, stride, name) \
+ _GIC_ACCESSOR_RO_INTR_REG(sz, off, stride, name) \
\
static inline void write_gic_##name(unsigned int intr, \
unsigned int val) \
@@ -68,22 +70,30 @@ static inline void write_gic_##name(unsigned int intr, \
__raw_writel(val, addr_gic_##name(intr)); \
}

+#define GIC_ACCESSOR_RO_INTR_REG(sz, off, stride, name) \
+ _GIC_ACCESSOR_RO_INTR_REG(sz, off, stride, name) \
+ _GIC_ACCESSOR_RO_INTR_REG(sz, MIPS_GIC_REDIR_OFS + off, stride, redir_##name)
+
+#define GIC_ACCESSOR_RW_INTR_REG(sz, off, stride, name) \
+ _GIC_ACCESSOR_RW_INTR_REG(sz, off, stride, name) \
+ _GIC_ACCESSOR_RW_INTR_REG(sz, MIPS_GIC_REDIR_OFS + off, stride, redir_##name)
+
/* For read-only local per-interrupt registers */
#define GIC_VX_ACCESSOR_RO_INTR_REG(sz, off, stride, name) \
- GIC_ACCESSOR_RO_INTR_REG(sz, MIPS_GIC_LOCAL_OFS + off, \
+ _GIC_ACCESSOR_RO_INTR_REG(sz, MIPS_GIC_LOCAL_OFS + off, \
stride, vl_##name) \
- GIC_ACCESSOR_RO_INTR_REG(sz, MIPS_GIC_REDIR_OFS + off, \
+ _GIC_ACCESSOR_RO_INTR_REG(sz, MIPS_GIC_REDIR_OFS + off, \
stride, vo_##name)

/* For read-write local per-interrupt registers */
#define GIC_VX_ACCESSOR_RW_INTR_REG(sz, off, stride, name) \
- GIC_ACCESSOR_RW_INTR_REG(sz, MIPS_GIC_LOCAL_OFS + off, \
+ _GIC_ACCESSOR_RW_INTR_REG(sz, MIPS_GIC_LOCAL_OFS + off, \
stride, vl_##name) \
- GIC_ACCESSOR_RW_INTR_REG(sz, MIPS_GIC_REDIR_OFS + off, \
+ _GIC_ACCESSOR_RW_INTR_REG(sz, MIPS_GIC_REDIR_OFS + off, \
stride, vo_##name)

/* For read-only shared bit-per-interrupt registers */
-#define GIC_ACCESSOR_RO_INTR_BIT(off, name) \
+#define _GIC_ACCESSOR_RO_INTR_BIT(off, name) \
static inline void __iomem *addr_gic_##name(void) \
{ \
return mips_gic_base + (off); \
@@ -106,8 +116,8 @@ static inline unsigned int read_gic_##name(unsigned int intr) \
}

/* For read-write shared bit-per-interrupt registers */
-#define GIC_ACCESSOR_RW_INTR_BIT(off, name) \
- GIC_ACCESSOR_RO_INTR_BIT(off, name) \
+#define _GIC_ACCESSOR_RW_INTR_BIT(off, name) \
+ _GIC_ACCESSOR_RO_INTR_BIT(off, name) \
\
static inline void write_gic_##name(unsigned int intr) \
{ \
@@ -146,6 +156,14 @@ static inline void change_gic_##name(unsigned int intr, \
} \
}

+#define GIC_ACCESSOR_RO_INTR_BIT(off, name) \
+ _GIC_ACCESSOR_RO_INTR_BIT(off, name) \
+ _GIC_ACCESSOR_RO_INTR_BIT(MIPS_GIC_REDIR_OFS + off, redir_##name)
+
+#define GIC_ACCESSOR_RW_INTR_BIT(off, name) \
+ _GIC_ACCESSOR_RW_INTR_BIT(off, name) \
+ _GIC_ACCESSOR_RW_INTR_BIT(MIPS_GIC_REDIR_OFS + off, redir_##name)
+
/* For read-only local bit-per-interrupt registers */
#define GIC_VX_ACCESSOR_RO_INTR_BIT(sz, off, name) \
GIC_ACCESSOR_RO_INTR_BIT(sz, MIPS_GIC_LOCAL_OFS + off, \
@@ -155,10 +173,10 @@ static inline void change_gic_##name(unsigned int intr, \

/* For read-write local bit-per-interrupt registers */
#define GIC_VX_ACCESSOR_RW_INTR_BIT(sz, off, name) \
- GIC_ACCESSOR_RW_INTR_BIT(sz, MIPS_GIC_LOCAL_OFS + off, \
- vl_##name) \
- GIC_ACCESSOR_RW_INTR_BIT(sz, MIPS_GIC_REDIR_OFS + off, \
- vo_##name)
+ _GIC_ACCESSOR_RW_INTR_BIT(sz, MIPS_GIC_LOCAL_OFS + off, \
+ vl_##name) \
+ _GIC_ACCESSOR_RW_INTR_BIT(sz, MIPS_GIC_REDIR_OFS + off, \
+ vo_##name)

/* GIC_SH_CONFIG - Information about the GIC configuration */
GIC_ACCESSOR_RW(32, 0x000, config)
--
2.17.1
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