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MIPS: Octeon: Rewrite interrupt handling code.

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This includes conversion to new style irq_chip functions, and
correctly enabling/disabling per-CPU interrupts.

The hardware interrupt bit to irq number mapping is now done with a
flexible map, instead of by bit twiddling the irq number.

[ tglx: Adjusted to new irq_cpu_on/offline callbacks and
        __irq_set_affinity_lock ]

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: ralf@linux-mips.org
LKML-Reference: <1301081931-11240-5-git-send-email-ddaney@caviumnetworks.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
David Daney 2011-03-25 12:38:51 -07:00 committed by Thomas Gleixner
parent a458465641
commit 0c3263870f
6 changed files with 998 additions and 894 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1566
arch/mips/cavium-octeon/octeon-irq.c
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File diff suppressed because it is too large Load Diff

12
arch/mips/cavium-octeon/setup.c
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@ -420,7 +420,6 @@ void octeon_user_io_init(void)
void __init prom_init(void)
{
struct cvmx_sysinfo *sysinfo;
const int coreid = cvmx_get_core_num();
int i;
int argc;
#ifdef CONFIG_CAVIUM_RESERVE32
@ -537,17 +536,6 @@ void __init prom_init(void)
octeon_uart = octeon_get_boot_uart();
/*
* Disable All CIU Interrupts. The ones we need will be
* enabled later. Read the SUM register so we know the write
* completed.
*/
cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2)), 0);
cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2 + 1)), 0);
cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2)), 0);
cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2 + 1)), 0);
cvmx_read_csr(CVMX_CIU_INTX_SUM0((coreid * 2)));
#ifdef CONFIG_SMP
octeon_write_lcd("LinuxSMP");
#else

49
arch/mips/cavium-octeon/smp.c
View File

@ -171,12 +171,27 @@ static void octeon_boot_secondary(int cpu, struct task_struct *idle)
* After we've done initial boot, this function is called to allow the
* board code to clean up state, if needed
*/
static void octeon_init_secondary(void)
static void __cpuinit octeon_init_secondary(void)
{
const int coreid = cvmx_get_core_num();
union cvmx_ciu_intx_sum0 interrupt_enable;
unsigned int sr;
sr = set_c0_status(ST0_BEV);
write_c0_ebase((u32)ebase);
write_c0_status(sr);
octeon_check_cpu_bist();
octeon_init_cvmcount();
octeon_irq_setup_secondary();
raw_local_irq_enable();
}
/**
* Callout to firmware before smp_init
*
*/
void octeon_prepare_cpus(unsigned int max_cpus)
{
#ifdef CONFIG_HOTPLUG_CPU
struct linux_app_boot_info *labi;
@ -186,34 +201,6 @@ static void octeon_init_secondary(void)
panic("The bootloader version on this board is incorrect.");
#endif
sr = set_c0_status(ST0_BEV);
write_c0_ebase((u32)ebase);
write_c0_status(sr);
octeon_check_cpu_bist();
octeon_init_cvmcount();
/*
pr_info("SMP: CPU%d (CoreId %lu) started\n", cpu, coreid);
*/
/* Enable Mailbox interrupts to this core. These are the only
interrupts allowed on line 3 */
cvmx_write_csr(CVMX_CIU_MBOX_CLRX(coreid), 0xffffffff);
interrupt_enable.u64 = 0;
interrupt_enable.s.mbox = 0x3;
cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2)), interrupt_enable.u64);
cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2 + 1)), 0);
cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2)), 0);
cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2 + 1)), 0);
/* Enable core interrupt processing for 2,3 and 7 */
set_c0_status(0x8c01);
}
/**
* Callout to firmware before smp_init
*
*/
void octeon_prepare_cpus(unsigned int max_cpus)
{
cvmx_write_csr(CVMX_CIU_MBOX_CLRX(cvmx_get_core_num()), 0xffffffff);
if (request_irq(OCTEON_IRQ_MBOX0, mailbox_interrupt, IRQF_DISABLED,
"mailbox0", mailbox_interrupt)) {

243
arch/mips/include/asm/mach-cavium-octeon/irq.h
View File

@ -11,172 +11,91 @@
#define NR_IRQS OCTEON_IRQ_LAST
#define MIPS_CPU_IRQ_BASE OCTEON_IRQ_SW0
/* 0 - 7 represent the i8259 master */
#define OCTEON_IRQ_I8259M0 0
#define OCTEON_IRQ_I8259M1 1
#define OCTEON_IRQ_I8259M2 2
#define OCTEON_IRQ_I8259M3 3
#define OCTEON_IRQ_I8259M4 4
#define OCTEON_IRQ_I8259M5 5
#define OCTEON_IRQ_I8259M6 6
#define OCTEON_IRQ_I8259M7 7
/* 8 - 15 represent the i8259 slave */
#define OCTEON_IRQ_I8259S0 8
#define OCTEON_IRQ_I8259S1 9
#define OCTEON_IRQ_I8259S2 10
#define OCTEON_IRQ_I8259S3 11
#define OCTEON_IRQ_I8259S4 12
#define OCTEON_IRQ_I8259S5 13
#define OCTEON_IRQ_I8259S6 14
#define OCTEON_IRQ_I8259S7 15
/* 16 - 23 represent the 8 MIPS standard interrupt sources */
#define OCTEON_IRQ_SW0 16
#define OCTEON_IRQ_SW1 17
#define OCTEON_IRQ_CIU0 18
#define OCTEON_IRQ_CIU1 19
#define OCTEON_IRQ_CIU4 20
#define OCTEON_IRQ_5 21
#define OCTEON_IRQ_PERF 22
#define OCTEON_IRQ_TIMER 23
/* 24 - 87 represent the sources in CIU_INTX_EN0 */
#define OCTEON_IRQ_WORKQ0 24
#define OCTEON_IRQ_WORKQ1 25
#define OCTEON_IRQ_WORKQ2 26
#define OCTEON_IRQ_WORKQ3 27
#define OCTEON_IRQ_WORKQ4 28
#define OCTEON_IRQ_WORKQ5 29
#define OCTEON_IRQ_WORKQ6 30
#define OCTEON_IRQ_WORKQ7 31
#define OCTEON_IRQ_WORKQ8 32
#define OCTEON_IRQ_WORKQ9 33
#define OCTEON_IRQ_WORKQ10 34
#define OCTEON_IRQ_WORKQ11 35
#define OCTEON_IRQ_WORKQ12 36
#define OCTEON_IRQ_WORKQ13 37
#define OCTEON_IRQ_WORKQ14 38
#define OCTEON_IRQ_WORKQ15 39
#define OCTEON_IRQ_GPIO0 40
#define OCTEON_IRQ_GPIO1 41
#define OCTEON_IRQ_GPIO2 42
#define OCTEON_IRQ_GPIO3 43
#define OCTEON_IRQ_GPIO4 44
#define OCTEON_IRQ_GPIO5 45
#define OCTEON_IRQ_GPIO6 46
#define OCTEON_IRQ_GPIO7 47
#define OCTEON_IRQ_GPIO8 48
#define OCTEON_IRQ_GPIO9 49
#define OCTEON_IRQ_GPIO10 50
#define OCTEON_IRQ_GPIO11 51
#define OCTEON_IRQ_GPIO12 52
#define OCTEON_IRQ_GPIO13 53
#define OCTEON_IRQ_GPIO14 54
#define OCTEON_IRQ_GPIO15 55
#define OCTEON_IRQ_MBOX0 56
#define OCTEON_IRQ_MBOX1 57
#define OCTEON_IRQ_UART0 58
#define OCTEON_IRQ_UART1 59
#define OCTEON_IRQ_PCI_INT0 60
#define OCTEON_IRQ_PCI_INT1 61
#define OCTEON_IRQ_PCI_INT2 62
#define OCTEON_IRQ_PCI_INT3 63
#define OCTEON_IRQ_PCI_MSI0 64
#define OCTEON_IRQ_PCI_MSI1 65
#define OCTEON_IRQ_PCI_MSI2 66
#define OCTEON_IRQ_PCI_MSI3 67
#define OCTEON_IRQ_RESERVED68 68 /* Summary of CIU_INT_SUM1 */
#define OCTEON_IRQ_TWSI 69
#define OCTEON_IRQ_RML 70
#define OCTEON_IRQ_TRACE 71
#define OCTEON_IRQ_GMX_DRP0 72
#define OCTEON_IRQ_GMX_DRP1 73
#define OCTEON_IRQ_IPD_DRP 74
#define OCTEON_IRQ_KEY_ZERO 75
#define OCTEON_IRQ_TIMER0 76
#define OCTEON_IRQ_TIMER1 77
#define OCTEON_IRQ_TIMER2 78
#define OCTEON_IRQ_TIMER3 79
#define OCTEON_IRQ_USB0 80
#define OCTEON_IRQ_PCM 81
#define OCTEON_IRQ_MPI 82
#define OCTEON_IRQ_TWSI2 83
#define OCTEON_IRQ_POWIQ 84
#define OCTEON_IRQ_IPDPPTHR 85
#define OCTEON_IRQ_MII0 86
#define OCTEON_IRQ_BOOTDMA 87
/* 88 - 151 represent the sources in CIU_INTX_EN1 */
#define OCTEON_IRQ_WDOG0 88
#define OCTEON_IRQ_WDOG1 89
#define OCTEON_IRQ_WDOG2 90
#define OCTEON_IRQ_WDOG3 91
#define OCTEON_IRQ_WDOG4 92
#define OCTEON_IRQ_WDOG5 93
#define OCTEON_IRQ_WDOG6 94
#define OCTEON_IRQ_WDOG7 95
#define OCTEON_IRQ_WDOG8 96
#define OCTEON_IRQ_WDOG9 97
#define OCTEON_IRQ_WDOG10 98
#define OCTEON_IRQ_WDOG11 99
#define OCTEON_IRQ_WDOG12 100
#define OCTEON_IRQ_WDOG13 101
#define OCTEON_IRQ_WDOG14 102
#define OCTEON_IRQ_WDOG15 103
#define OCTEON_IRQ_UART2 104
#define OCTEON_IRQ_USB1 105
#define OCTEON_IRQ_MII1 106
#define OCTEON_IRQ_RESERVED107 107
#define OCTEON_IRQ_RESERVED108 108
#define OCTEON_IRQ_RESERVED109 109
#define OCTEON_IRQ_RESERVED110 110
#define OCTEON_IRQ_RESERVED111 111
#define OCTEON_IRQ_RESERVED112 112
#define OCTEON_IRQ_RESERVED113 113
#define OCTEON_IRQ_RESERVED114 114
#define OCTEON_IRQ_RESERVED115 115
#define OCTEON_IRQ_RESERVED116 116
#define OCTEON_IRQ_RESERVED117 117
#define OCTEON_IRQ_RESERVED118 118
#define OCTEON_IRQ_RESERVED119 119
#define OCTEON_IRQ_RESERVED120 120
#define OCTEON_IRQ_RESERVED121 121
#define OCTEON_IRQ_RESERVED122 122
#define OCTEON_IRQ_RESERVED123 123
#define OCTEON_IRQ_RESERVED124 124
#define OCTEON_IRQ_RESERVED125 125
#define OCTEON_IRQ_RESERVED126 126
#define OCTEON_IRQ_RESERVED127 127
#define OCTEON_IRQ_RESERVED128 128
#define OCTEON_IRQ_RESERVED129 129
#define OCTEON_IRQ_RESERVED130 130
#define OCTEON_IRQ_RESERVED131 131
#define OCTEON_IRQ_RESERVED132 132
#define OCTEON_IRQ_RESERVED133 133
#define OCTEON_IRQ_RESERVED134 134
#define OCTEON_IRQ_RESERVED135 135
#define OCTEON_IRQ_RESERVED136 136
#define OCTEON_IRQ_RESERVED137 137
#define OCTEON_IRQ_RESERVED138 138
#define OCTEON_IRQ_RESERVED139 139
#define OCTEON_IRQ_RESERVED140 140
#define OCTEON_IRQ_RESERVED141 141
#define OCTEON_IRQ_RESERVED142 142
#define OCTEON_IRQ_RESERVED143 143
#define OCTEON_IRQ_RESERVED144 144
#define OCTEON_IRQ_RESERVED145 145
#define OCTEON_IRQ_RESERVED146 146
#define OCTEON_IRQ_RESERVED147 147
#define OCTEON_IRQ_RESERVED148 148
#define OCTEON_IRQ_RESERVED149 149
#define OCTEON_IRQ_RESERVED150 150
#define OCTEON_IRQ_RESERVED151 151
enum octeon_irq {
/* 1 - 8 represent the 8 MIPS standard interrupt sources */
OCTEON_IRQ_SW0 = 1,
OCTEON_IRQ_SW1,
/* CIU0, CUI2, CIU4 are 3, 4, 5 */
OCTEON_IRQ_5 = 6,
OCTEON_IRQ_PERF,
OCTEON_IRQ_TIMER,
/* sources in CIU_INTX_EN0 */
OCTEON_IRQ_WORKQ0,
OCTEON_IRQ_GPIO0 = OCTEON_IRQ_WORKQ0 + 16,
OCTEON_IRQ_WDOG0 = OCTEON_IRQ_GPIO0 + 16,
OCTEON_IRQ_WDOG15 = OCTEON_IRQ_WDOG0 + 15,
OCTEON_IRQ_MBOX0 = OCTEON_IRQ_WDOG0 + 16,
OCTEON_IRQ_MBOX1,
OCTEON_IRQ_UART0,
OCTEON_IRQ_UART1,
OCTEON_IRQ_UART2,
OCTEON_IRQ_PCI_INT0,
OCTEON_IRQ_PCI_INT1,
OCTEON_IRQ_PCI_INT2,
OCTEON_IRQ_PCI_INT3,
OCTEON_IRQ_PCI_MSI0,
OCTEON_IRQ_PCI_MSI1,
OCTEON_IRQ_PCI_MSI2,
OCTEON_IRQ_PCI_MSI3,
OCTEON_IRQ_TWSI,
OCTEON_IRQ_TWSI2,
OCTEON_IRQ_RML,
OCTEON_IRQ_TRACE0,
OCTEON_IRQ_GMX_DRP0 = OCTEON_IRQ_TRACE0 + 4,
OCTEON_IRQ_IPD_DRP = OCTEON_IRQ_GMX_DRP0 + 5,
OCTEON_IRQ_KEY_ZERO,
OCTEON_IRQ_TIMER0,
OCTEON_IRQ_TIMER1,
OCTEON_IRQ_TIMER2,
OCTEON_IRQ_TIMER3,
OCTEON_IRQ_USB0,
OCTEON_IRQ_USB1,
OCTEON_IRQ_PCM,
OCTEON_IRQ_MPI,
OCTEON_IRQ_POWIQ,
OCTEON_IRQ_IPDPPTHR,
OCTEON_IRQ_MII0,
OCTEON_IRQ_MII1,
OCTEON_IRQ_BOOTDMA,
OCTEON_IRQ_NAND,
OCTEON_IRQ_MIO, /* Summary of MIO_BOOT_ERR */
OCTEON_IRQ_IOB, /* Summary of IOB_INT_SUM */
OCTEON_IRQ_FPA, /* Summary of FPA_INT_SUM */
OCTEON_IRQ_POW, /* Summary of POW_ECC_ERR */
OCTEON_IRQ_L2C, /* Summary of L2C_INT_STAT */
OCTEON_IRQ_IPD, /* Summary of IPD_INT_SUM */
OCTEON_IRQ_PIP, /* Summary of PIP_INT_REG */
OCTEON_IRQ_PKO, /* Summary of PKO_REG_ERROR */
OCTEON_IRQ_ZIP, /* Summary of ZIP_ERROR */
OCTEON_IRQ_TIM, /* Summary of TIM_REG_ERROR */
OCTEON_IRQ_RAD, /* Summary of RAD_REG_ERROR */
OCTEON_IRQ_KEY, /* Summary of KEY_INT_SUM */
OCTEON_IRQ_DFA, /* Summary of DFA */
OCTEON_IRQ_USBCTL, /* Summary of USBN0_INT_SUM */
OCTEON_IRQ_SLI, /* Summary of SLI_INT_SUM */
OCTEON_IRQ_DPI, /* Summary of DPI_INT_SUM */
OCTEON_IRQ_AGX0, /* Summary of GMX0*+PCS0_INT*_REG */
OCTEON_IRQ_AGL = OCTEON_IRQ_AGX0 + 5,
OCTEON_IRQ_PTP,
OCTEON_IRQ_PEM0,
OCTEON_IRQ_PEM1,
OCTEON_IRQ_SRIO0,
OCTEON_IRQ_SRIO1,
OCTEON_IRQ_LMC0,
OCTEON_IRQ_DFM = OCTEON_IRQ_LMC0 + 4, /* Summary of DFM */
OCTEON_IRQ_RST,
};
#ifdef CONFIG_PCI_MSI
/* 152 - 215 represent the MSI interrupts 0-63 */
#define OCTEON_IRQ_MSI_BIT0 152
#define OCTEON_IRQ_MSI_LAST (OCTEON_IRQ_MSI_BIT0 + 255)
/* 152 - 407 represent the MSI interrupts 0-255 */
#define OCTEON_IRQ_MSI_BIT0 (OCTEON_IRQ_RST + 1)
#define OCTEON_IRQ_LAST (OCTEON_IRQ_MSI_LAST + 1)
#define OCTEON_IRQ_MSI_LAST (OCTEON_IRQ_MSI_BIT0 + 255)
#define OCTEON_IRQ_LAST (OCTEON_IRQ_MSI_LAST + 1)
#else
#define OCTEON_IRQ_LAST 152
#define OCTEON_IRQ_LAST (OCTEON_IRQ_RST + 1)
#endif
#endif

2
arch/mips/include/asm/octeon/octeon.h
View File

@ -257,4 +257,6 @@ extern struct cvmx_bootinfo *octeon_bootinfo;
extern uint64_t octeon_bootloader_entry_addr;
extern void (*octeon_irq_setup_secondary)(void);
#endif /* __ASM_OCTEON_OCTEON_H */

20
arch/mips/pci/msi-octeon.c
View File

@ -259,11 +259,11 @@ static DEFINE_RAW_SPINLOCK(octeon_irq_msi_lock);
static u64 msi_rcv_reg[4];
static u64 mis_ena_reg[4];
static void octeon_irq_msi_enable_pcie(unsigned int irq)
static void octeon_irq_msi_enable_pcie(struct irq_data *data)
{
u64 en;
unsigned long flags;
int msi_number = irq - OCTEON_IRQ_MSI_BIT0;
int msi_number = data->irq - OCTEON_IRQ_MSI_BIT0;
int irq_index = msi_number >> 6;
int irq_bit = msi_number & 0x3f;
@ -275,11 +275,11 @@ static void octeon_irq_msi_enable_pcie(unsigned int irq)
raw_spin_unlock_irqrestore(&octeon_irq_msi_lock, flags);
}
static void octeon_irq_msi_disable_pcie(unsigned int irq)
static void octeon_irq_msi_disable_pcie(struct irq_data *data)
{
u64 en;
unsigned long flags;
int msi_number = irq - OCTEON_IRQ_MSI_BIT0;
int msi_number = data->irq - OCTEON_IRQ_MSI_BIT0;
int irq_index = msi_number >> 6;
int irq_bit = msi_number & 0x3f;
@ -293,11 +293,11 @@ static void octeon_irq_msi_disable_pcie(unsigned int irq)
static struct irq_chip octeon_irq_chip_msi_pcie = {
.name = "MSI",
.enable = octeon_irq_msi_enable_pcie,
.disable = octeon_irq_msi_disable_pcie,
.irq_enable = octeon_irq_msi_enable_pcie,
.irq_disable = octeon_irq_msi_disable_pcie,
};
static void octeon_irq_msi_enable_pci(unsigned int irq)
static void octeon_irq_msi_enable_pci(struct irq_data *data)
{
/*
* Octeon PCI doesn't have the ability to mask/unmask MSI
@ -308,15 +308,15 @@ static void octeon_irq_msi_enable_pci(unsigned int irq)
*/
}
static void octeon_irq_msi_disable_pci(unsigned int irq)
static void octeon_irq_msi_disable_pci(struct irq_data *data)
{
/* See comment in enable */
}
static struct irq_chip octeon_irq_chip_msi_pci = {
.name = "MSI",
.enable = octeon_irq_msi_enable_pci,
.disable = octeon_irq_msi_disable_pci,
.irq_enable = octeon_irq_msi_enable_pci,
.irq_disable = octeon_irq_msi_disable_pci,
};
/*