[PATCH 02/10] powerpc: Consolidate mpic_alloc() OF address translation
From: Kyle Moffett <hidden>
Date: 2011-11-29 18:59:33
Subsystem:
linux for power macintosh, linux for powerpc (32-bit and 64-bit), linux for powerpc embedded ppc85xx, the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Scott Wood, Linus Torvalds
Instead of using the open-coded "reg" property lookup and address translation in mpic_alloc(), directly call of_address_to_resource(). This includes various workarounds for special cases which the naive of_address_translate() does not. Afterwards it is possible to remove the copiously copy-pasted calls to of_address_translate() from the 85xx/86xx/powermac platforms. Signed-off-by: Kyle Moffett <redacted> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <redacted> Cc: Grant Likely <redacted> Cc: Kumar Gala <redacted> --- arch/powerpc/platforms/85xx/corenet_ds.c | 9 +---- arch/powerpc/platforms/85xx/ksi8560.c | 9 +---- arch/powerpc/platforms/85xx/mpc8536_ds.c | 9 +---- arch/powerpc/platforms/85xx/mpc85xx_ads.c | 9 +---- arch/powerpc/platforms/85xx/mpc85xx_cds.c | 9 +---- arch/powerpc/platforms/85xx/mpc85xx_ds.c | 11 +---- arch/powerpc/platforms/85xx/mpc85xx_mds.c | 9 +---- arch/powerpc/platforms/85xx/mpc85xx_rdb.c | 11 +---- arch/powerpc/platforms/85xx/p1010rdb.c | 9 +---- arch/powerpc/platforms/85xx/p1022_ds.c | 9 +---- arch/powerpc/platforms/85xx/p1023_rds.c | 9 +---- arch/powerpc/platforms/85xx/sbc8548.c | 9 +---- arch/powerpc/platforms/85xx/sbc8560.c | 9 +---- arch/powerpc/platforms/85xx/socrates.c | 9 +---- arch/powerpc/platforms/85xx/stx_gp3.c | 9 +---- arch/powerpc/platforms/85xx/tqm85xx.c | 9 +---- arch/powerpc/platforms/85xx/xes_mpc85xx.c | 9 +---- arch/powerpc/platforms/86xx/pic.c | 4 +- arch/powerpc/platforms/powermac/pic.c | 7 +--- arch/powerpc/sysdev/mpic.c | 61 ++++++++++++++++------------- 20 files changed, 55 insertions(+), 174 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/corenet_ds.c b/arch/powerpc/platforms/85xx/corenet_ds.c
index 435074d..7893ad3 100644
--- a/arch/powerpc/platforms/85xx/corenet_ds.c
+++ b/arch/powerpc/platforms/85xx/corenet_ds.c@@ -36,7 +36,6 @@ void __init corenet_ds_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np = NULL; unsigned int flags = MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU;
@@ -48,16 +47,10 @@ void __init corenet_ds_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - if (ppc_md.get_irq == mpic_get_coreint_irq) flags |= MPIC_ENABLE_COREINT; - mpic = mpic_alloc(np, r.start, flags, 0, 256, " OpenPIC "); + mpic = mpic_alloc(np, 0, flags, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL); mpic_init(mpic);
diff --git a/arch/powerpc/platforms/85xx/ksi8560.c b/arch/powerpc/platforms/85xx/ksi8560.c
index c46f935..b20c07d 100644
--- a/arch/powerpc/platforms/85xx/ksi8560.c
+++ b/arch/powerpc/platforms/85xx/ksi8560.c@@ -68,7 +68,6 @@ static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) static void __init ksi8560_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; #ifdef CONFIG_CPM2 int irq;
@@ -81,13 +80,7 @@ static void __init ksi8560_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Could not map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL);
diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c b/arch/powerpc/platforms/85xx/mpc8536_ds.c
index f79f2f1..03173ba 100644
--- a/arch/powerpc/platforms/85xx/mpc8536_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c@@ -35,7 +35,6 @@ void __init mpc8536_ds_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; np = of_find_node_by_type(NULL, "open-pic");
@@ -44,13 +43,7 @@ void __init mpc8536_ds_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, 0, 256, " OpenPIC ");
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
index 3b2c9bb..5cb797b 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c@@ -64,7 +64,6 @@ static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) static void __init mpc85xx_ads_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np = NULL; #ifdef CONFIG_CPM2 int irq;
@@ -76,13 +75,7 @@ static void __init mpc85xx_ads_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Could not map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL);
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
index 66cb8d6..3e65336 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c@@ -186,7 +186,6 @@ static struct irqaction mpc85xxcds_8259_irqaction = { static void __init mpc85xx_cds_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np = NULL; np = of_find_node_by_type(np, "open-pic");
@@ -196,13 +195,7 @@ static void __init mpc85xx_cds_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL);
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
index 52d2a3e..b608da7 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c@@ -61,7 +61,6 @@ static void mpc85xx_8259_cascade(unsigned int irq, struct irq_desc *desc) void __init mpc85xx_ds_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; #ifdef CONFIG_PPC_I8259 struct device_node *cascade_node = NULL;
@@ -75,20 +74,14 @@ void __init mpc85xx_ds_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - if (of_flat_dt_is_compatible(root, "fsl,MPC8572DS-CAMP")) { - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC "); } else { - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index e4d470e..f2f7527 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c@@ -474,20 +474,13 @@ machine_arch_initcall(p1021_mds, swiotlb_setup_bus_notifier); static void __init mpc85xx_mds_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np = NULL; np = of_find_node_by_type(NULL, "open-pic"); if (!np) return; - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC ");
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
index cd49898..67bd1d4 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c@@ -43,7 +43,6 @@ void __init mpc85xx_rdb_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; unsigned long root = of_get_flat_dt_root();
@@ -53,20 +52,14 @@ void __init mpc85xx_rdb_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - if (of_flat_dt_is_compatible(root, "fsl,MPC85XXRDB-CAMP")) { - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC "); } else { - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
diff --git a/arch/powerpc/platforms/85xx/p1010rdb.c b/arch/powerpc/platforms/85xx/p1010rdb.c
index d7387fa..2efcdcd 100644
--- a/arch/powerpc/platforms/85xx/p1010rdb.c
+++ b/arch/powerpc/platforms/85xx/p1010rdb.c@@ -31,7 +31,6 @@ void __init p1010_rdb_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; np = of_find_node_by_type(NULL, "open-pic");
@@ -40,13 +39,7 @@ void __init p1010_rdb_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, MPIC_PRIMARY | MPIC_WANTS_RESET | + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC ");
diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c b/arch/powerpc/platforms/85xx/p1022_ds.c
index 089b959..e840cc9 100644
--- a/arch/powerpc/platforms/85xx/p1022_ds.c
+++ b/arch/powerpc/platforms/85xx/p1022_ds.c@@ -240,7 +240,6 @@ p1022ds_valid_monitor_port(enum fsl_diu_monitor_port port) void __init p1022_ds_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; np = of_find_node_by_type(NULL, "open-pic");
@@ -249,13 +248,7 @@ void __init p1022_ds_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - pr_err("Failed to map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
diff --git a/arch/powerpc/platforms/85xx/p1023_rds.c b/arch/powerpc/platforms/85xx/p1023_rds.c
index da546ea..6988fab 100644
--- a/arch/powerpc/platforms/85xx/p1023_rds.c
+++ b/arch/powerpc/platforms/85xx/p1023_rds.c@@ -107,7 +107,6 @@ machine_device_initcall(p1023_rds, p1023_publish_devices); static void __init mpc85xx_rds_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np = NULL; np = of_find_node_by_type(NULL, "open-pic");
@@ -116,13 +115,7 @@ static void __init mpc85xx_rds_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC ");
diff --git a/arch/powerpc/platforms/85xx/sbc8548.c b/arch/powerpc/platforms/85xx/sbc8548.c
index 14632a9..218761a 100644
--- a/arch/powerpc/platforms/85xx/sbc8548.c
+++ b/arch/powerpc/platforms/85xx/sbc8548.c@@ -53,7 +53,6 @@ static int sbc_rev; static void __init sbc8548_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np = NULL; np = of_find_node_by_type(np, "open-pic");
@@ -63,13 +62,7 @@ static void __init sbc8548_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL);
diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c
index cebd786..6e3066a 100644
--- a/arch/powerpc/platforms/85xx/sbc8560.c
+++ b/arch/powerpc/platforms/85xx/sbc8560.c@@ -55,7 +55,6 @@ static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) static void __init sbc8560_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np = NULL; #ifdef CONFIG_CPM2 int irq;
@@ -67,13 +66,7 @@ static void __init sbc8560_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Could not map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL);
diff --git a/arch/powerpc/platforms/85xx/socrates.c b/arch/powerpc/platforms/85xx/socrates.c
index 747d8fb..fb4bfd6 100644
--- a/arch/powerpc/platforms/85xx/socrates.c
+++ b/arch/powerpc/platforms/85xx/socrates.c@@ -46,7 +46,6 @@ static void __init socrates_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; np = of_find_node_by_type(NULL, "open-pic");
@@ -55,13 +54,7 @@ static void __init socrates_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Could not map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL);
diff --git a/arch/powerpc/platforms/85xx/stx_gp3.c b/arch/powerpc/platforms/85xx/stx_gp3.c
index 5387e9f..78aef45 100644
--- a/arch/powerpc/platforms/85xx/stx_gp3.c
+++ b/arch/powerpc/platforms/85xx/stx_gp3.c@@ -59,7 +59,6 @@ static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) static void __init stx_gp3_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; #ifdef CONFIG_CPM2 int irq;
@@ -71,13 +70,7 @@ static void __init stx_gp3_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Could not map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL);
diff --git a/arch/powerpc/platforms/85xx/tqm85xx.c b/arch/powerpc/platforms/85xx/tqm85xx.c
index 325de77..5775f4c 100644
--- a/arch/powerpc/platforms/85xx/tqm85xx.c
+++ b/arch/powerpc/platforms/85xx/tqm85xx.c@@ -57,7 +57,6 @@ static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) static void __init tqm85xx_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; #ifdef CONFIG_CPM2 int irq;
@@ -69,13 +68,7 @@ static void __init tqm85xx_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Could not map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL);
diff --git a/arch/powerpc/platforms/85xx/xes_mpc85xx.c b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
index ce3f660..fccf9aa 100644
--- a/arch/powerpc/platforms/85xx/xes_mpc85xx.c
+++ b/arch/powerpc/platforms/85xx/xes_mpc85xx.c@@ -42,7 +42,6 @@ void __init xes_mpc85xx_pic_init(void) { struct mpic *mpic; - struct resource r; struct device_node *np; np = of_find_node_by_type(NULL, "open-pic");
@@ -51,13 +50,7 @@ void __init xes_mpc85xx_pic_init(void) return; } - if (of_address_to_resource(np, 0, &r)) { - printk(KERN_ERR "Failed to map mpic register space\n"); - of_node_put(np); - return; - } - - mpic = mpic_alloc(np, r.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, 0, 256, " OpenPIC ");
diff --git a/arch/powerpc/platforms/86xx/pic.c b/arch/powerpc/platforms/86xx/pic.c
index 8ef8960..f85c8f0 100644
--- a/arch/powerpc/platforms/86xx/pic.c
+++ b/arch/powerpc/platforms/86xx/pic.c@@ -33,7 +33,6 @@ void __init mpc86xx_init_irq(void) { struct mpic *mpic; struct device_node *np; - struct resource res; #ifdef CONFIG_PPC_I8259 struct device_node *cascade_node = NULL; int cascade_irq;
@@ -43,9 +42,8 @@ void __init mpc86xx_init_irq(void) np = of_find_node_by_type(NULL, "open-pic"); if (np == NULL) return; - of_address_to_resource(np, 0, &res); - mpic = mpic_alloc(np, res.start, + mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 901bfbd..44f9774 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c@@ -498,15 +498,10 @@ static struct mpic * __init pmac_setup_one_mpic(struct device_node *np, int master) { const char *name = master ? " MPIC 1 " : " MPIC 2 "; - struct resource r; struct mpic *mpic; unsigned int flags = master ? MPIC_PRIMARY : 0; int rc; - rc = of_address_to_resource(np, 0, &r); - if (rc) - return NULL; - pmac_call_feature(PMAC_FTR_ENABLE_MPIC, np, 0, 0); flags |= MPIC_WANTS_RESET;
@@ -519,7 +514,7 @@ static struct mpic * __init pmac_setup_one_mpic(struct device_node *np, if (master && (flags & MPIC_BIG_ENDIAN)) flags |= MPIC_U3_HT_IRQS; - mpic = mpic_alloc(np, r.start, flags, 0, 0, name); + mpic = mpic_alloc(np, 0, flags, 0, 0, name); if (mpic == NULL) return NULL;
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 8c7e852..d68c9ca 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c@@ -1142,7 +1142,24 @@ struct mpic * __init mpic_alloc(struct device_node *node, const char *vers; int i; int intvec_top; - u64 paddr = phys_addr; + + /* + * If no phyiscal address was specified then all of the phyiscal + * addressing parameters must come from the device-tree. + */ + if (!phys_addr) { + BUG_ON(!node); + + /* Check if it is DCR-based */ + if (of_get_property(node, "dcr-reg", NULL)) { + flags |= MPIC_USES_DCR; + } else { + struct resource r; + if (of_address_to_resource(node, 0, &r)) + return NULL; + phys_addr = r.start; + } + } mpic = kzalloc(sizeof(struct mpic), GFP_KERNEL); if (mpic == NULL)
@@ -1224,35 +1241,25 @@ struct mpic * __init mpic_alloc(struct device_node *node, #endif /* default register type */ - mpic->reg_type = (flags & MPIC_BIG_ENDIAN) ? - mpic_access_mmio_be : mpic_access_mmio_le; - - /* If no physical address is passed in, a device-node is mandatory */ - BUG_ON(paddr == 0 && node == NULL); + if (flags & MPIC_BIG_ENDIAN) + mpic->reg_type = mpic_access_mmio_be; + else + mpic->reg_type = mpic_access_mmio_le; - /* If no physical address passed in, check if it's dcr based */ - if (paddr == 0 && of_get_property(node, "dcr-reg", NULL) != NULL) { + /* + * An MPIC with a "dcr-reg" property must be accessed that way, but + * only if the kernel includes DCR support. + */ #ifdef CONFIG_PPC_DCR - mpic->flags |= MPIC_USES_DCR; + if (flags & MPIC_USES_DCR) mpic->reg_type = mpic_access_dcr; #else - BUG(); -#endif /* CONFIG_PPC_DCR */ - } - - /* If the MPIC is not DCR based, and no physical address was passed - * in, try to obtain one - */ - if (paddr == 0 && !(mpic->flags & MPIC_USES_DCR)) { - const u32 *reg = of_get_property(node, "reg", NULL); - BUG_ON(reg == NULL); - paddr = of_translate_address(node, reg); - BUG_ON(paddr == OF_BAD_ADDR); - } + BUG_ON(flags & MPIC_USES_DCR); +#endif /* Map the global registers */ - mpic_map(mpic, node, paddr, &mpic->gregs, MPIC_INFO(GREG_BASE), 0x1000); - mpic_map(mpic, node, paddr, &mpic->tmregs, MPIC_INFO(TIMER_BASE), 0x1000); + mpic_map(mpic, node, phys_addr, &mpic->gregs, MPIC_INFO(GREG_BASE), 0x1000); + mpic_map(mpic, node, phys_addr, &mpic->tmregs, MPIC_INFO(TIMER_BASE), 0x1000); /* Reset */
@@ -1307,7 +1314,7 @@ struct mpic * __init mpic_alloc(struct device_node *node, for_each_possible_cpu(i) { unsigned int cpu = get_hard_smp_processor_id(i); - mpic_map(mpic, node, paddr, &mpic->cpuregs[cpu], + mpic_map(mpic, node, phys_addr, &mpic->cpuregs[cpu], MPIC_INFO(CPU_BASE) + cpu * MPIC_INFO(CPU_STRIDE), 0x1000); }
@@ -1315,7 +1322,7 @@ struct mpic * __init mpic_alloc(struct device_node *node, /* Initialize main ISU if none provided */ if (mpic->isu_size == 0) { mpic->isu_size = mpic->num_sources; - mpic_map(mpic, node, paddr, &mpic->isus[0], + mpic_map(mpic, node, phys_addr, &mpic->isus[0], MPIC_INFO(IRQ_BASE), MPIC_INFO(IRQ_STRIDE) * mpic->isu_size); } mpic->isu_shift = 1 + __ilog2(mpic->isu_size - 1);
@@ -1347,7 +1354,7 @@ struct mpic * __init mpic_alloc(struct device_node *node, } printk(KERN_INFO "mpic: Setting up MPIC \"%s\" version %s at %llx," " max %d CPUs\n", - name, vers, (unsigned long long)paddr, num_possible_cpus()); + name, vers, (unsigned long long)phys_addr, num_possible_cpus()); printk(KERN_INFO "mpic: ISU size: %d, shift: %d, mask: %x\n", mpic->isu_size, mpic->isu_shift, mpic->isu_mask);
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1.7.2.5