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Diffstat (limited to 'arch/powerpc/sysdev/ipic.c')
-rw-r--r--arch/powerpc/sysdev/ipic.c219
1 files changed, 160 insertions, 59 deletions
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index 05a56e55804..7274750fd9c 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -30,11 +30,32 @@
#include "ipic.h"
static struct ipic * primary_ipic;
+static struct irq_chip ipic_level_irq_chip, ipic_edge_irq_chip;
static DEFINE_SPINLOCK(ipic_lock);
static struct ipic_info ipic_info[] = {
+ [1] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_C,
+ .force = IPIC_SIFCR_H,
+ .bit = 16,
+ .prio_mask = 0,
+ },
+ [2] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_C,
+ .force = IPIC_SIFCR_H,
+ .bit = 17,
+ .prio_mask = 1,
+ },
+ [4] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_C,
+ .force = IPIC_SIFCR_H,
+ .bit = 19,
+ .prio_mask = 3,
+ },
[9] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_D,
.force = IPIC_SIFCR_H,
@@ -42,7 +63,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 0,
},
[10] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_D,
.force = IPIC_SIFCR_H,
@@ -50,15 +70,27 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 1,
},
[11] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_D,
.force = IPIC_SIFCR_H,
.bit = 26,
.prio_mask = 2,
},
+ [12] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_D,
+ .force = IPIC_SIFCR_H,
+ .bit = 27,
+ .prio_mask = 3,
+ },
+ [13] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_D,
+ .force = IPIC_SIFCR_H,
+ .bit = 28,
+ .prio_mask = 4,
+ },
[14] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_D,
.force = IPIC_SIFCR_H,
@@ -66,7 +98,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 5,
},
[15] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_D,
.force = IPIC_SIFCR_H,
@@ -74,7 +105,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 6,
},
[16] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_D,
.force = IPIC_SIFCR_H,
@@ -82,7 +112,7 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 7,
},
[17] = {
- .pend = IPIC_SEPNR,
+ .ack = IPIC_SEPNR,
.mask = IPIC_SEMSR,
.prio = IPIC_SMPRR_A,
.force = IPIC_SEFCR,
@@ -90,7 +120,7 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 5,
},
[18] = {
- .pend = IPIC_SEPNR,
+ .ack = IPIC_SEPNR,
.mask = IPIC_SEMSR,
.prio = IPIC_SMPRR_A,
.force = IPIC_SEFCR,
@@ -98,7 +128,7 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 6,
},
[19] = {
- .pend = IPIC_SEPNR,
+ .ack = IPIC_SEPNR,
.mask = IPIC_SEMSR,
.prio = IPIC_SMPRR_A,
.force = IPIC_SEFCR,
@@ -106,7 +136,7 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 7,
},
[20] = {
- .pend = IPIC_SEPNR,
+ .ack = IPIC_SEPNR,
.mask = IPIC_SEMSR,
.prio = IPIC_SMPRR_B,
.force = IPIC_SEFCR,
@@ -114,7 +144,7 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 4,
},
[21] = {
- .pend = IPIC_SEPNR,
+ .ack = IPIC_SEPNR,
.mask = IPIC_SEMSR,
.prio = IPIC_SMPRR_B,
.force = IPIC_SEFCR,
@@ -122,7 +152,7 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 5,
},
[22] = {
- .pend = IPIC_SEPNR,
+ .ack = IPIC_SEPNR,
.mask = IPIC_SEMSR,
.prio = IPIC_SMPRR_B,
.force = IPIC_SEFCR,
@@ -130,7 +160,7 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 6,
},
[23] = {
- .pend = IPIC_SEPNR,
+ .ack = IPIC_SEPNR,
.mask = IPIC_SEMSR,
.prio = IPIC_SMPRR_B,
.force = IPIC_SEFCR,
@@ -138,7 +168,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 7,
},
[32] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_A,
.force = IPIC_SIFCR_H,
@@ -146,7 +175,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 0,
},
[33] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_A,
.force = IPIC_SIFCR_H,
@@ -154,7 +182,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 1,
},
[34] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_A,
.force = IPIC_SIFCR_H,
@@ -162,7 +189,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 2,
},
[35] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_A,
.force = IPIC_SIFCR_H,
@@ -170,7 +196,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 3,
},
[36] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_A,
.force = IPIC_SIFCR_H,
@@ -178,7 +203,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 4,
},
[37] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_A,
.force = IPIC_SIFCR_H,
@@ -186,7 +210,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 5,
},
[38] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_A,
.force = IPIC_SIFCR_H,
@@ -194,15 +217,48 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 6,
},
[39] = {
- .pend = IPIC_SIPNR_H,
.mask = IPIC_SIMSR_H,
.prio = IPIC_SIPRR_A,
.force = IPIC_SIFCR_H,
.bit = 7,
.prio_mask = 7,
},
+ [42] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_B,
+ .force = IPIC_SIFCR_H,
+ .bit = 10,
+ .prio_mask = 2,
+ },
+ [44] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_B,
+ .force = IPIC_SIFCR_H,
+ .bit = 12,
+ .prio_mask = 4,
+ },
+ [45] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_B,
+ .force = IPIC_SIFCR_H,
+ .bit = 13,
+ .prio_mask = 5,
+ },
+ [46] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_B,
+ .force = IPIC_SIFCR_H,
+ .bit = 14,
+ .prio_mask = 6,
+ },
+ [47] = {
+ .mask = IPIC_SIMSR_H,
+ .prio = IPIC_SIPRR_B,
+ .force = IPIC_SIFCR_H,
+ .bit = 15,
+ .prio_mask = 7,
+ },
[48] = {
- .pend = IPIC_SEPNR,
.mask = IPIC_SEMSR,
.prio = IPIC_SMPRR_A,
.force = IPIC_SEFCR,
@@ -210,7 +266,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 4,
},
[64] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = IPIC_SMPRR_A,
.force = IPIC_SIFCR_L,
@@ -218,7 +273,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 0,
},
[65] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = IPIC_SMPRR_A,
.force = IPIC_SIFCR_L,
@@ -226,7 +280,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 1,
},
[66] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = IPIC_SMPRR_A,
.force = IPIC_SIFCR_L,
@@ -234,7 +287,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 2,
},
[67] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = IPIC_SMPRR_A,
.force = IPIC_SIFCR_L,
@@ -242,7 +294,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 3,
},
[68] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = IPIC_SMPRR_B,
.force = IPIC_SIFCR_L,
@@ -250,7 +301,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 0,
},
[69] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = IPIC_SMPRR_B,
.force = IPIC_SIFCR_L,
@@ -258,7 +308,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 1,
},
[70] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = IPIC_SMPRR_B,
.force = IPIC_SIFCR_L,
@@ -266,7 +315,6 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 2,
},
[71] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = IPIC_SMPRR_B,
.force = IPIC_SIFCR_L,
@@ -274,91 +322,114 @@ static struct ipic_info ipic_info[] = {
.prio_mask = 3,
},
[72] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 8,
},
[73] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 9,
},
[74] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 10,
},
[75] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 11,
},
[76] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 12,
},
[77] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 13,
},
[78] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 14,
},
[79] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 15,
},
[80] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 16,
},
+ [81] = {
+ .mask = IPIC_SIMSR_L,
+ .prio = 0,
+ .force = IPIC_SIFCR_L,
+ .bit = 17,
+ },
+ [82] = {
+ .mask = IPIC_SIMSR_L,
+ .prio = 0,
+ .force = IPIC_SIFCR_L,
+ .bit = 18,
+ },
[84] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 20,
},
[85] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 21,
},
+ [86] = {
+ .mask = IPIC_SIMSR_L,
+ .prio = 0,
+ .force = IPIC_SIFCR_L,
+ .bit = 22,
+ },
+ [87] = {
+ .mask = IPIC_SIMSR_L,
+ .prio = 0,
+ .force = IPIC_SIFCR_L,
+ .bit = 23,
+ },
+ [88] = {
+ .mask = IPIC_SIMSR_L,
+ .prio = 0,
+ .force = IPIC_SIFCR_L,
+ .bit = 24,
+ },
+ [89] = {
+ .mask = IPIC_SIMSR_L,
+ .prio = 0,
+ .force = IPIC_SIFCR_L,
+ .bit = 25,
+ },
[90] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
.bit = 26,
},
[91] = {
- .pend = IPIC_SIPNR_L,
.mask = IPIC_SIMSR_L,
.prio = 0,
.force = IPIC_SIFCR_L,
@@ -412,6 +483,10 @@ static void ipic_mask_irq(unsigned int virq)
temp &= ~(1 << (31 - ipic_info[src].bit));
ipic_write(ipic->regs, ipic_info[src].mask, temp);
+ /* mb() can't guarantee that masking is finished. But it does finish
+ * for nearly all cases. */
+ mb();
+
spin_unlock_irqrestore(&ipic_lock, flags);
}
@@ -424,9 +499,13 @@ static void ipic_ack_irq(unsigned int virq)
spin_lock_irqsave(&ipic_lock, flags);
- temp = ipic_read(ipic->regs, ipic_info[src].pend);
+ temp = ipic_read(ipic->regs, ipic_info[src].ack);
temp |= (1 << (31 - ipic_info[src].bit));
- ipic_write(ipic->regs, ipic_info[src].pend, temp);
+ ipic_write(ipic->regs, ipic_info[src].ack, temp);
+
+ /* mb() can't guarantee that ack is finished. But it does finish
+ * for nearly all cases. */
+ mb();
spin_unlock_irqrestore(&ipic_lock, flags);
}
@@ -444,9 +523,13 @@ static void ipic_mask_irq_and_ack(unsigned int virq)
temp &= ~(1 << (31 - ipic_info[src].bit));
ipic_write(ipic->regs, ipic_info[src].mask, temp);
- temp = ipic_read(ipic->regs, ipic_info[src].pend);
+ temp = ipic_read(ipic->regs, ipic_info[src].ack);
temp |= (1 << (31 - ipic_info[src].bit));
- ipic_write(ipic->regs, ipic_info[src].pend, temp);
+ ipic_write(ipic->regs, ipic_info[src].ack, temp);
+
+ /* mb() can't guarantee that ack is finished. But it does finish
+ * for nearly all cases. */
+ mb();
spin_unlock_irqrestore(&ipic_lock, flags);
}
@@ -468,14 +551,22 @@ static int ipic_set_irq_type(unsigned int virq, unsigned int flow_type)
flow_type);
return -EINVAL;
}
+ /* ipic supports only edge mode on external interrupts */
+ if ((flow_type & IRQ_TYPE_EDGE_FALLING) && !ipic_info[src].ack) {
+ printk(KERN_ERR "ipic: edge sense not supported on internal "
+ "interrupts\n");
+ return -EINVAL;
+ }
desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
if (flow_type & IRQ_TYPE_LEVEL_LOW) {
desc->status |= IRQ_LEVEL;
desc->handle_irq = handle_level_irq;
+ desc->chip = &ipic_level_irq_chip;
} else {
desc->handle_irq = handle_edge_irq;
+ desc->chip = &ipic_edge_irq_chip;
}
/* only EXT IRQ senses are programmable on ipic
@@ -500,7 +591,16 @@ static int ipic_set_irq_type(unsigned int virq, unsigned int flow_type)
return 0;
}
-static struct irq_chip ipic_irq_chip = {
+/* level interrupts and edge interrupts have different ack operations */
+static struct irq_chip ipic_level_irq_chip = {
+ .typename = " IPIC ",
+ .unmask = ipic_unmask_irq,
+ .mask = ipic_mask_irq,
+ .mask_ack = ipic_mask_irq,
+ .set_type = ipic_set_irq_type,
+};
+
+static struct irq_chip ipic_edge_irq_chip = {
.typename = " IPIC ",
.unmask = ipic_unmask_irq,
.mask = ipic_mask_irq,
@@ -519,13 +619,9 @@ static int ipic_host_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hw)
{
struct ipic *ipic = h->host_data;
- struct irq_chip *chip;
-
- /* Default chip */
- chip = &ipic->hc_irq;
set_irq_chip_data(virq, ipic);
- set_irq_chip_and_handler(virq, chip, handle_level_irq);
+ set_irq_chip_and_handler(virq, &ipic_level_irq_chip, handle_level_irq);
/* Set default irq type */
set_irq_type(virq, IRQ_TYPE_NONE);
@@ -584,7 +680,6 @@ struct ipic * __init ipic_init(struct device_node *node, unsigned int flags)
ipic->regs = ioremap(res.start, res.end - res.start + 1);
ipic->irqhost->host_data = ipic;
- ipic->hc_irq = ipic_irq_chip;
/* init hw */
ipic_write(ipic->regs, IPIC_SICNR, 0x0);
@@ -593,6 +688,10 @@ struct ipic * __init ipic_init(struct device_node *node, unsigned int flags)
* configure SICFR accordingly */
if (flags & IPIC_SPREADMODE_GRP_A)
temp |= SICFR_IPSA;
+ if (flags & IPIC_SPREADMODE_GRP_B)
+ temp |= SICFR_IPSB;
+ if (flags & IPIC_SPREADMODE_GRP_C)
+ temp |= SICFR_IPSC;
if (flags & IPIC_SPREADMODE_GRP_D)
temp |= SICFR_IPSD;
if (flags & IPIC_SPREADMODE_MIX_A)
@@ -600,7 +699,7 @@ struct ipic * __init ipic_init(struct device_node *node, unsigned int flags)
if (flags & IPIC_SPREADMODE_MIX_B)
temp |= SICFR_MPSB;
- ipic_write(ipic->regs, IPIC_SICNR, temp);
+ ipic_write(ipic->regs, IPIC_SICFR, temp);
/* handle MCP route */
temp = 0;
@@ -672,10 +771,12 @@ void ipic_set_highest_priority(unsigned int virq)
void ipic_set_default_priority(void)
{
- ipic_write(primary_ipic->regs, IPIC_SIPRR_A, IPIC_SIPRR_A_DEFAULT);
- ipic_write(primary_ipic->regs, IPIC_SIPRR_D, IPIC_SIPRR_D_DEFAULT);
- ipic_write(primary_ipic->regs, IPIC_SMPRR_A, IPIC_SMPRR_A_DEFAULT);
- ipic_write(primary_ipic->regs, IPIC_SMPRR_B, IPIC_SMPRR_B_DEFAULT);
+ ipic_write(primary_ipic->regs, IPIC_SIPRR_A, IPIC_PRIORITY_DEFAULT);
+ ipic_write(primary_ipic->regs, IPIC_SIPRR_B, IPIC_PRIORITY_DEFAULT);
+ ipic_write(primary_ipic->regs, IPIC_SIPRR_C, IPIC_PRIORITY_DEFAULT);
+ ipic_write(primary_ipic->regs, IPIC_SIPRR_D, IPIC_PRIORITY_DEFAULT);
+ ipic_write(primary_ipic->regs, IPIC_SMPRR_A, IPIC_PRIORITY_DEFAULT);
+ ipic_write(primary_ipic->regs, IPIC_SMPRR_B, IPIC_PRIORITY_DEFAULT);
}
void ipic_enable_mcp(enum ipic_mcp_irq mcp_irq)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-20 22:49:28 +0000