MIPS: OCTEON: Add support for cn68XX interrupt controller.

The cn68XX has a new interrupt controller named CIU2, add support for
this, and use it if cn68XX detected at runtime.

Signed-off-by: David Daney <david.daney@cavium.com>
This commit is contained in:
David Daney 2012-04-04 15:34:41 -07:00
Родитель 9787c56ee3
Коммит 88fd85892a
2 изменённых файлов: 547 добавлений и 24 удалений

Просмотреть файл

@ -16,6 +16,7 @@
#include <linux/of.h>
#include <asm/octeon/octeon.h>
#include <asm/octeon/cvmx-ciu2-defs.h>
static DEFINE_RAW_SPINLOCK(octeon_irq_ciu0_lock);
static DEFINE_RAW_SPINLOCK(octeon_irq_ciu1_lock);
@ -29,8 +30,9 @@ union octeon_ciu_chip_data {
void *p;
unsigned long l;
struct {
unsigned int line:6;
unsigned int bit:6;
unsigned long line:6;
unsigned long bit:6;
unsigned long gpio_line:6;
} s;
};
@ -45,7 +47,7 @@ struct octeon_core_chip_data {
static struct octeon_core_chip_data octeon_irq_core_chip_data[MIPS_CORE_IRQ_LINES];
static void octeon_irq_set_ciu_mapping(int irq, int line, int bit,
static void octeon_irq_set_ciu_mapping(int irq, int line, int bit, int gpio_line,
struct irq_chip *chip,
irq_flow_handler_t handler)
{
@ -56,6 +58,7 @@ static void octeon_irq_set_ciu_mapping(int irq, int line, int bit,
cd.l = 0;
cd.s.line = line;
cd.s.bit = bit;
cd.s.gpio_line = gpio_line;
irq_set_chip_data(irq, cd.p);
octeon_irq_ciu_to_irq[line][bit] = irq;
@ -435,7 +438,7 @@ static void octeon_irq_ciu_ack(struct irq_data *data)
u64 mask;
union octeon_ciu_chip_data cd;
cd.p = data->chip_data;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
if (cd.s.line == 0) {
@ -458,7 +461,7 @@ static void octeon_irq_ciu_disable_all_v2(struct irq_data *data)
wmb(); /* Make sure flag changes arrive before register updates. */
cd.p = data->chip_data;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
if (cd.s.line == 0) {
@ -486,7 +489,7 @@ static void octeon_irq_ciu_enable_all_v2(struct irq_data *data)
u64 mask;
union octeon_ciu_chip_data cd;
cd.p = data->chip_data;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
if (cd.s.line == 0) {
@ -521,7 +524,7 @@ static void octeon_irq_gpio_setup(struct irq_data *data)
cfg.s.fil_cnt = 7;
cfg.s.fil_sel = 3;
cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.bit - 16), cfg.u64);
cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.gpio_line), cfg.u64);
}
static void octeon_irq_ciu_enable_gpio_v2(struct irq_data *data)
@ -549,7 +552,7 @@ static void octeon_irq_ciu_disable_gpio_v2(struct irq_data *data)
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.bit - 16), 0);
cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.gpio_line), 0);
octeon_irq_ciu_disable_all_v2(data);
}
@ -559,7 +562,7 @@ static void octeon_irq_ciu_disable_gpio(struct irq_data *data)
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.bit - 16), 0);
cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.gpio_line), 0);
octeon_irq_ciu_disable_all(data);
}
@ -570,7 +573,7 @@ static void octeon_irq_ciu_gpio_ack(struct irq_data *data)
u64 mask;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit - 16);
mask = 1ull << (cd.s.gpio_line);
cvmx_write_csr(CVMX_GPIO_INT_CLR, mask);
}
@ -616,7 +619,7 @@ static int octeon_irq_ciu_set_affinity(struct irq_data *data,
unsigned long flags;
union octeon_ciu_chip_data cd;
cd.p = data->chip_data;
cd.p = irq_data_get_irq_chip_data(data);
/*
* For non-v2 CIU, we will allow only single CPU affinity.
@ -679,7 +682,7 @@ static int octeon_irq_ciu_set_affinity_v2(struct irq_data *data,
if (!enable_one)
return 0;
cd.p = data->chip_data;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << cd.s.bit;
if (cd.s.line == 0) {
@ -976,19 +979,20 @@ static int octeon_irq_ciu_map(struct irq_domain *d,
return -EINVAL;
if (octeon_irq_ciu_is_edge(line, bit))
octeon_irq_set_ciu_mapping(virq, line, bit,
octeon_irq_set_ciu_mapping(virq, line, bit, 0,
octeon_irq_ciu_chip,
handle_edge_irq);
else
octeon_irq_set_ciu_mapping(virq, line, bit,
octeon_irq_set_ciu_mapping(virq, line, bit, 0,
octeon_irq_ciu_chip,
handle_level_irq);
return 0;
}
static int octeon_irq_gpio_map(struct irq_domain *d,
unsigned int virq, irq_hw_number_t hw)
static int octeon_irq_gpio_map_common(struct irq_domain *d,
unsigned int virq, irq_hw_number_t hw,
int line_limit, struct irq_chip *chip)
{
struct octeon_irq_gpio_domain_data *gpiod = d->host_data;
unsigned int line, bit;
@ -999,15 +1003,20 @@ static int octeon_irq_gpio_map(struct irq_domain *d,
hw += gpiod->base_hwirq;
line = hw >> 6;
bit = hw & 63;
if (line > 1 || octeon_irq_ciu_to_irq[line][bit] != 0)
if (line > line_limit || octeon_irq_ciu_to_irq[line][bit] != 0)
return -EINVAL;
octeon_irq_set_ciu_mapping(virq, line, bit,
octeon_irq_gpio_chip,
octeon_irq_handle_gpio);
octeon_irq_set_ciu_mapping(virq, line, bit, hw,
chip, octeon_irq_handle_gpio);
return 0;
}
static int octeon_irq_gpio_map(struct irq_domain *d,
unsigned int virq, irq_hw_number_t hw)
{
return octeon_irq_gpio_map_common(d, virq, hw, 1, octeon_irq_gpio_chip);
}
static struct irq_domain_ops octeon_irq_domain_ciu_ops = {
.map = octeon_irq_ciu_map,
.xlate = octeon_irq_ciu_xlat,
@ -1091,6 +1100,13 @@ static void octeon_irq_ip3_v2(void)
}
}
static bool octeon_irq_use_ip4;
static void __cpuinit octeon_irq_local_enable_ip4(void *arg)
{
set_c0_status(STATUSF_IP4);
}
static void octeon_irq_ip4_mask(void)
{
clear_c0_status(STATUSF_IP4);
@ -1103,6 +1119,13 @@ static void (*octeon_irq_ip4)(void);
void __cpuinitdata (*octeon_irq_setup_secondary)(void);
void __cpuinit octeon_irq_set_ip4_handler(octeon_irq_ip4_handler_t h)
{
octeon_irq_ip4 = h;
octeon_irq_use_ip4 = true;
on_each_cpu(octeon_irq_local_enable_ip4, NULL, 1);
}
static void __cpuinit octeon_irq_percpu_enable(void)
{
irq_cpu_online();
@ -1123,6 +1146,28 @@ static void __cpuinit octeon_irq_init_ciu_percpu(void)
cvmx_read_csr(CVMX_CIU_INTX_SUM0((coreid * 2)));
}
static void octeon_irq_init_ciu2_percpu(void)
{
u64 regx, ipx;
int coreid = cvmx_get_core_num();
u64 base = CVMX_CIU2_EN_PPX_IP2_WRKQ(coreid);
/*
* Disable All CIU2 Interrupts. The ones we need will be
* enabled later. Read the SUM register so we know the write
* completed.
*
* There are 9 registers and 3 IPX levels with strides 0x1000
* and 0x200 respectivly. Use loops to clear them.
*/
for (regx = 0; regx <= 0x8000; regx += 0x1000) {
for (ipx = 0; ipx <= 0x400; ipx += 0x200)
cvmx_write_csr(base + regx + ipx, 0);
}
cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP2(coreid));
}
static void __cpuinit octeon_irq_setup_secondary_ciu(void)
{
@ -1137,6 +1182,19 @@ static void __cpuinit octeon_irq_setup_secondary_ciu(void)
clear_c0_status(STATUSF_IP4);
}
static void octeon_irq_setup_secondary_ciu2(void)
{
octeon_irq_init_ciu2_percpu();
octeon_irq_percpu_enable();
/* Enable the CIU lines */
set_c0_status(STATUSF_IP3 | STATUSF_IP2);
if (octeon_irq_use_ip4)
set_c0_status(STATUSF_IP4);
else
clear_c0_status(STATUSF_IP4);
}
static void __init octeon_irq_init_ciu(void)
{
unsigned int i;
@ -1200,8 +1258,8 @@ static void __init octeon_irq_init_ciu(void)
for (i = 0; i < 16; i++)
octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_WORKQ0, 0, i + 0);
octeon_irq_set_ciu_mapping(OCTEON_IRQ_MBOX0, 0, 32, chip_mbox, handle_percpu_irq);
octeon_irq_set_ciu_mapping(OCTEON_IRQ_MBOX1, 0, 33, chip_mbox, handle_percpu_irq);
octeon_irq_set_ciu_mapping(OCTEON_IRQ_MBOX0, 0, 32, 0, chip_mbox, handle_percpu_irq);
octeon_irq_set_ciu_mapping(OCTEON_IRQ_MBOX1, 0, 33, 0, chip_mbox, handle_percpu_irq);
for (i = 0; i < 4; i++)
octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_PCI_INT0, 0, i + 36);
@ -1217,7 +1275,7 @@ static void __init octeon_irq_init_ciu(void)
/* CIU_1 */
for (i = 0; i < 16; i++)
octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_WDOG0, 1, i + 0, chip_wd, handle_level_irq);
octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_WDOG0, 1, i + 0, 0, chip_wd, handle_level_irq);
octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_USB1, 1, 17);
@ -1226,6 +1284,465 @@ static void __init octeon_irq_init_ciu(void)
clear_c0_status(STATUSF_IP4);
}
/*
* Watchdog interrupts are special. They are associated with a single
* core, so we hardwire the affinity to that core.
*/
static void octeon_irq_ciu2_wd_enable(struct irq_data *data)
{
u64 mask;
u64 en_addr;
int coreid = data->irq - OCTEON_IRQ_WDOG0;
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + (0x1000ull * cd.s.line);
cvmx_write_csr(en_addr, mask);
}
static void octeon_irq_ciu2_enable(struct irq_data *data)
{
u64 mask;
u64 en_addr;
int cpu = next_cpu_for_irq(data);
int coreid = octeon_coreid_for_cpu(cpu);
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + (0x1000ull * cd.s.line);
cvmx_write_csr(en_addr, mask);
}
static void octeon_irq_ciu2_enable_local(struct irq_data *data)
{
u64 mask;
u64 en_addr;
int coreid = cvmx_get_core_num();
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + (0x1000ull * cd.s.line);
cvmx_write_csr(en_addr, mask);
}
static void octeon_irq_ciu2_disable_local(struct irq_data *data)
{
u64 mask;
u64 en_addr;
int coreid = cvmx_get_core_num();
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(coreid) + (0x1000ull * cd.s.line);
cvmx_write_csr(en_addr, mask);
}
static void octeon_irq_ciu2_ack(struct irq_data *data)
{
u64 mask;
u64 en_addr;
int coreid = cvmx_get_core_num();
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
en_addr = CVMX_CIU2_RAW_PPX_IP2_WRKQ(coreid) + (0x1000ull * cd.s.line);
cvmx_write_csr(en_addr, mask);
}
static void octeon_irq_ciu2_disable_all(struct irq_data *data)
{
int cpu;
u64 mask;
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << (cd.s.bit);
for_each_online_cpu(cpu) {
u64 en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(octeon_coreid_for_cpu(cpu)) + (0x1000ull * cd.s.line);
cvmx_write_csr(en_addr, mask);
}
}
static void octeon_irq_ciu2_mbox_enable_all(struct irq_data *data)
{
int cpu;
u64 mask;
mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0);
for_each_online_cpu(cpu) {
u64 en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1S(octeon_coreid_for_cpu(cpu));
cvmx_write_csr(en_addr, mask);
}
}
static void octeon_irq_ciu2_mbox_disable_all(struct irq_data *data)
{
int cpu;
u64 mask;
mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0);
for_each_online_cpu(cpu) {
u64 en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1C(octeon_coreid_for_cpu(cpu));
cvmx_write_csr(en_addr, mask);
}
}
static void octeon_irq_ciu2_mbox_enable_local(struct irq_data *data)
{
u64 mask;
u64 en_addr;
int coreid = cvmx_get_core_num();
mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0);
en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1S(coreid);
cvmx_write_csr(en_addr, mask);
}
static void octeon_irq_ciu2_mbox_disable_local(struct irq_data *data)
{
u64 mask;
u64 en_addr;
int coreid = cvmx_get_core_num();
mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0);
en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1C(coreid);
cvmx_write_csr(en_addr, mask);
}
#ifdef CONFIG_SMP
static int octeon_irq_ciu2_set_affinity(struct irq_data *data,
const struct cpumask *dest, bool force)
{
int cpu;
bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data);
u64 mask;
union octeon_ciu_chip_data cd;
if (!enable_one)
return 0;
cd.p = irq_data_get_irq_chip_data(data);
mask = 1ull << cd.s.bit;
for_each_online_cpu(cpu) {
u64 en_addr;
if (cpumask_test_cpu(cpu, dest) && enable_one) {
enable_one = false;
en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(octeon_coreid_for_cpu(cpu)) + (0x1000ull * cd.s.line);
} else {
en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(octeon_coreid_for_cpu(cpu)) + (0x1000ull * cd.s.line);
}
cvmx_write_csr(en_addr, mask);
}
return 0;
}
#endif
static void octeon_irq_ciu2_enable_gpio(struct irq_data *data)
{
octeon_irq_gpio_setup(data);
octeon_irq_ciu2_enable(data);
}
static void octeon_irq_ciu2_disable_gpio(struct irq_data *data)
{
union octeon_ciu_chip_data cd;
cd.p = irq_data_get_irq_chip_data(data);
cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.gpio_line), 0);
octeon_irq_ciu2_disable_all(data);
}
static struct irq_chip octeon_irq_chip_ciu2 = {
.name = "CIU2-E",
.irq_enable = octeon_irq_ciu2_enable,
.irq_disable = octeon_irq_ciu2_disable_all,
.irq_ack = octeon_irq_ciu2_ack,
.irq_mask = octeon_irq_ciu2_disable_local,
.irq_unmask = octeon_irq_ciu2_enable,
#ifdef CONFIG_SMP
.irq_set_affinity = octeon_irq_ciu2_set_affinity,
.irq_cpu_offline = octeon_irq_cpu_offline_ciu,
#endif
};
static struct irq_chip octeon_irq_chip_ciu2_mbox = {
.name = "CIU2-M",
.irq_enable = octeon_irq_ciu2_mbox_enable_all,
.irq_disable = octeon_irq_ciu2_mbox_disable_all,
.irq_ack = octeon_irq_ciu2_mbox_disable_local,
.irq_eoi = octeon_irq_ciu2_mbox_enable_local,
.irq_cpu_online = octeon_irq_ciu2_mbox_enable_local,
.irq_cpu_offline = octeon_irq_ciu2_mbox_disable_local,
.flags = IRQCHIP_ONOFFLINE_ENABLED,
};
static struct irq_chip octeon_irq_chip_ciu2_wd = {
.name = "CIU2-W",
.irq_enable = octeon_irq_ciu2_wd_enable,
.irq_disable = octeon_irq_ciu2_disable_all,
.irq_mask = octeon_irq_ciu2_disable_local,
.irq_unmask = octeon_irq_ciu2_enable_local,
};
static struct irq_chip octeon_irq_chip_ciu2_gpio = {
.name = "CIU-GPIO",
.irq_enable = octeon_irq_ciu2_enable_gpio,
.irq_disable = octeon_irq_ciu2_disable_gpio,
.irq_ack = octeon_irq_ciu_gpio_ack,
.irq_mask = octeon_irq_ciu2_disable_local,
.irq_unmask = octeon_irq_ciu2_enable,
.irq_set_type = octeon_irq_ciu_gpio_set_type,
#ifdef CONFIG_SMP
.irq_set_affinity = octeon_irq_ciu2_set_affinity,
.irq_cpu_offline = octeon_irq_cpu_offline_ciu,
#endif
.flags = IRQCHIP_SET_TYPE_MASKED,
};
static int octeon_irq_ciu2_xlat(struct irq_domain *d,
struct device_node *node,
const u32 *intspec,
unsigned int intsize,
unsigned long *out_hwirq,
unsigned int *out_type)
{
unsigned int ciu, bit;
ciu = intspec[0];
bit = intspec[1];
/* Line 7 are the GPIO lines */
if (ciu > 6 || bit > 63)
return -EINVAL;
*out_hwirq = (ciu << 6) | bit;
*out_type = 0;
return 0;
}
static bool octeon_irq_ciu2_is_edge(unsigned int line, unsigned int bit)
{
bool edge = false;
if (line == 3) /* MIO */
switch (bit) {
case 2: /* IPD_DRP */
case 8 ... 11: /* Timers */
case 48: /* PTP */
edge = true;
break;
default:
break;
}
else if (line == 6) /* PKT */
switch (bit) {
case 52 ... 53: /* ILK_DRP */
case 8 ... 12: /* GMX_DRP */
edge = true;
break;
default:
break;
}
return edge;
}
static int octeon_irq_ciu2_map(struct irq_domain *d,
unsigned int virq, irq_hw_number_t hw)
{
unsigned int line = hw >> 6;
unsigned int bit = hw & 63;
if (!octeon_irq_virq_in_range(virq))
return -EINVAL;
/* Line 7 are the GPIO lines */
if (line > 6 || octeon_irq_ciu_to_irq[line][bit] != 0)
return -EINVAL;
if (octeon_irq_ciu2_is_edge(line, bit))
octeon_irq_set_ciu_mapping(virq, line, bit, 0,
&octeon_irq_chip_ciu2,
handle_edge_irq);
else
octeon_irq_set_ciu_mapping(virq, line, bit, 0,
&octeon_irq_chip_ciu2,
handle_level_irq);
return 0;
}
static int octeon_irq_ciu2_gpio_map(struct irq_domain *d,
unsigned int virq, irq_hw_number_t hw)
{
return octeon_irq_gpio_map_common(d, virq, hw, 7, &octeon_irq_chip_ciu2_gpio);
}
static struct irq_domain_ops octeon_irq_domain_ciu2_ops = {
.map = octeon_irq_ciu2_map,
.xlate = octeon_irq_ciu2_xlat,
};
static struct irq_domain_ops octeon_irq_domain_ciu2_gpio_ops = {
.map = octeon_irq_ciu2_gpio_map,
.xlate = octeon_irq_gpio_xlat,
};
static void octeon_irq_ciu2(void)
{
int line;
int bit;
int irq;
u64 src_reg, src, sum;
const unsigned long core_id = cvmx_get_core_num();
sum = cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP2(core_id)) & 0xfful;
if (unlikely(!sum))
goto spurious;
line = fls64(sum) - 1;
src_reg = CVMX_CIU2_SRC_PPX_IP2_WRKQ(core_id) + (0x1000 * line);
src = cvmx_read_csr(src_reg);
if (unlikely(!src))
goto spurious;
bit = fls64(src) - 1;
irq = octeon_irq_ciu_to_irq[line][bit];
if (unlikely(!irq))
goto spurious;
do_IRQ(irq);
goto out;
spurious:
spurious_interrupt();
out:
/* CN68XX pass 1.x has an errata that accessing the ACK registers
can stop interrupts from propagating */
if (OCTEON_IS_MODEL(OCTEON_CN68XX))
cvmx_read_csr(CVMX_CIU2_INTR_CIU_READY);
else
cvmx_read_csr(CVMX_CIU2_ACK_PPX_IP2(core_id));
return;
}
static void octeon_irq_ciu2_mbox(void)
{
int line;
const unsigned long core_id = cvmx_get_core_num();
u64 sum = cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP3(core_id)) >> 60;
if (unlikely(!sum))
goto spurious;
line = fls64(sum) - 1;
do_IRQ(OCTEON_IRQ_MBOX0 + line);
goto out;
spurious:
spurious_interrupt();
out:
/* CN68XX pass 1.x has an errata that accessing the ACK registers
can stop interrupts from propagating */
if (OCTEON_IS_MODEL(OCTEON_CN68XX))
cvmx_read_csr(CVMX_CIU2_INTR_CIU_READY);
else
cvmx_read_csr(CVMX_CIU2_ACK_PPX_IP3(core_id));
return;
}
static void __init octeon_irq_init_ciu2(void)
{
unsigned int i;
struct device_node *gpio_node;
struct device_node *ciu_node;
struct irq_domain *ciu_domain = NULL;
octeon_irq_init_ciu2_percpu();
octeon_irq_setup_secondary = octeon_irq_setup_secondary_ciu2;
octeon_irq_ip2 = octeon_irq_ciu2;
octeon_irq_ip3 = octeon_irq_ciu2_mbox;
octeon_irq_ip4 = octeon_irq_ip4_mask;
/* Mips internal */
octeon_irq_init_core();
gpio_node = of_find_compatible_node(NULL, NULL, "cavium,octeon-3860-gpio");
if (gpio_node) {
struct octeon_irq_gpio_domain_data *gpiod;
gpiod = kzalloc(sizeof(*gpiod), GFP_KERNEL);
if (gpiod) {
/* gpio domain host_data is the base hwirq number. */
gpiod->base_hwirq = 7 << 6;
irq_domain_add_linear(gpio_node, 16, &octeon_irq_domain_ciu2_gpio_ops, gpiod);
of_node_put(gpio_node);
} else
pr_warn("Cannot allocate memory for GPIO irq_domain.\n");
} else
pr_warn("Cannot find device node for cavium,octeon-3860-gpio.\n");
ciu_node = of_find_compatible_node(NULL, NULL, "cavium,octeon-6880-ciu2");
if (ciu_node) {
ciu_domain = irq_domain_add_tree(ciu_node, &octeon_irq_domain_ciu2_ops, NULL);
of_node_put(ciu_node);
} else
panic("Cannot find device node for cavium,octeon-6880-ciu2.");
/* CUI2 */
for (i = 0; i < 64; i++)
octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_WORKQ0, 0, i);
for (i = 0; i < 32; i++)
octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_WDOG0, 1, i, 0,
&octeon_irq_chip_ciu2_wd, handle_level_irq);
for (i = 0; i < 4; i++)
octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_TIMER0, 3, i + 8);
octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_USB0, 3, 44);
for (i = 0; i < 4; i++)
octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_PCI_INT0, 4, i);
for (i = 0; i < 4; i++)
octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_PCI_MSI0, 4, i + 8);
irq_set_chip_and_handler(OCTEON_IRQ_MBOX0, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq);
irq_set_chip_and_handler(OCTEON_IRQ_MBOX1, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq);
irq_set_chip_and_handler(OCTEON_IRQ_MBOX2, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq);
irq_set_chip_and_handler(OCTEON_IRQ_MBOX3, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq);
/* Enable the CIU lines */
set_c0_status(STATUSF_IP3 | STATUSF_IP2);
clear_c0_status(STATUSF_IP4);
}
void __init arch_init_irq(void)
{
#ifdef CONFIG_SMP
@ -1233,7 +1750,10 @@ void __init arch_init_irq(void)
cpumask_clear(irq_default_affinity);
cpumask_set_cpu(smp_processor_id(), irq_default_affinity);
#endif
octeon_irq_init_ciu();
if (OCTEON_IS_MODEL(OCTEON_CN68XX))
octeon_irq_init_ciu2();
else
octeon_irq_init_ciu();
}
asmlinkage void plat_irq_dispatch(void)

Просмотреть файл

@ -254,4 +254,7 @@ extern uint64_t octeon_bootloader_entry_addr;
extern void (*octeon_irq_setup_secondary)(void);
typedef void (*octeon_irq_ip4_handler_t)(void);
void octeon_irq_set_ip4_handler(octeon_irq_ip4_handler_t);
#endif /* __ASM_OCTEON_OCTEON_H */