#define DBG(fmt...) do{if(0)printk(fmt);}while(0)
#endif
+/**
+ * struct ps3_bmp - a per cpu irq status and mask bitmap structure
+ * @status: 256 bit status bitmap indexed by plug
+ * @unused_1:
+ * @mask: 256 bit mask bitmap indexed by plug
+ * @unused_2:
+ * @lock:
+ * @ipi_debug_brk_mask:
+ *
+ * The HV mantains per SMT thread mappings of HV outlet to HV plug on
+ * behalf of the guest. These mappings are implemented as 256 bit guest
+ * supplied bitmaps indexed by plug number. The addresses of the bitmaps
+ * are registered with the HV through lv1_configure_irq_state_bitmap().
+ *
+ * The HV supports 256 plugs per thread, assigned as {0..255}, for a total
+ * of 512 plugs supported on a processor. To simplify the logic this
+ * implementation equates HV plug value to Linux virq value, constrains each
+ * interrupt to have a system wide unique plug number, and limits the range
+ * of the plug values to map into the first dword of the bitmaps. This
+ * gives a usable range of plug values of {NUM_ISA_INTERRUPTS..63}. Note
+ * that there is no constraint on how many in this set an individual thread
+ * can acquire.
+ */
+
+struct ps3_bmp {
+ struct {
+ u64 status;
+ u64 unused_1[3];
+ u64 mask;
+ u64 unused_2[3];
+ };
+ u64 ipi_debug_brk_mask;
+ spinlock_t lock;
+};
+
+/**
+ * struct ps3_private - a per cpu data structure
+ * @bmp: ps3_bmp structure
+ * @node: HV logical_ppe_id
+ * @cpu: HV thread_id
+ */
+
+struct ps3_private {
+ struct ps3_bmp bmp __attribute__ ((aligned (64)));
+ u64 node;
+ unsigned int cpu;
+};
+
+static DEFINE_PER_CPU(struct ps3_private, ps3_private);
+
+static int ps3_connect_irq(enum ps3_cpu_binding cpu, unsigned long outlet,
+ unsigned int *virq)
+{
+ int result;
+ struct ps3_private *pd;
+
+ /* This defines the default interrupt distribution policy. */
+
+ if (cpu == PS3_BINDING_CPU_ANY)
+ cpu = 0;
+
+ pd = &per_cpu(ps3_private, cpu);
+
+ *virq = irq_create_mapping(NULL, outlet);
+
+ if (*virq == NO_IRQ) {
+ pr_debug("%s:%d: irq_create_mapping failed: outlet %lu\n",
+ __func__, __LINE__, outlet);
+ result = -ENOMEM;
+ goto fail_create;
+ }
+
+ /* Binds outlet to cpu + virq. */
+
+ result = lv1_connect_irq_plug_ext(pd->node, pd->cpu, *virq, outlet, 0);
+
+ if (result) {
+ pr_info("%s:%d: lv1_connect_irq_plug_ext failed: %s\n",
+ __func__, __LINE__, ps3_result(result));
+ result = -EPERM;
+ goto fail_connect;
+ }
+
+ pr_debug("%s:%d: outlet %lu => cpu %u, virq %u\n", __func__, __LINE__,
+ outlet, cpu, *virq);
+
+ result = set_irq_chip_data(*virq, pd);
+
+ if (result) {
+ pr_debug("%s:%d: set_irq_chip_data failed\n",
+ __func__, __LINE__);
+ goto fail_set;
+ }
+
+ return result;
+
+fail_set:
+ lv1_disconnect_irq_plug_ext(pd->node, pd->cpu, *virq);
+fail_connect:
+ irq_dispose_mapping(*virq);
+fail_create:
+ return result;
+}
+
+static void ps3_disconnect_irq(unsigned int virq)
+{
+ int result;
+ const struct ps3_private *pd = get_irq_chip_data(virq);
+
+ pr_debug("%s:%d: node %lu, cpu %d, virq %u\n", __func__, __LINE__,
+ pd->node, pd->cpu, virq);
+
+ result = lv1_disconnect_irq_plug_ext(pd->node, pd->cpu, virq);
+
+ if (result)
+ pr_info("%s:%d: lv1_disconnect_irq_plug_ext failed: %s\n",
+ __func__, __LINE__, ps3_result(result));
+
+ set_irq_chip_data(virq, NULL);
+ irq_dispose_mapping(virq);
+}
+
/**
* ps3_alloc_io_irq - Assign a virq to a system bus device.
- * interrupt_id: The device interrupt id read from the system repository.
+ * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
+ * serviced on.
+ * @interrupt_id: The device interrupt id read from the system repository.
* @virq: The assigned Linux virq.
*
* An io irq represents a non-virtualized device interrupt. interrupt_id
* coresponds to the interrupt number of the interrupt controller.
*/
-int ps3_alloc_io_irq(unsigned int interrupt_id, unsigned int *virq)
+int ps3_alloc_io_irq(enum ps3_cpu_binding cpu, unsigned int interrupt_id,
+ unsigned int *virq)
{
int result;
unsigned long outlet;
return result;
}
- *virq = irq_create_mapping(NULL, outlet);
-
- pr_debug("%s:%d: interrupt_id %u => outlet %lu, virq %u\n",
- __func__, __LINE__, interrupt_id, outlet, *virq);
+ result = ps3_connect_irq(cpu, outlet, virq);
+ BUG_ON(result);
- return 0;
+ return result;
}
int ps3_free_io_irq(unsigned int virq)
pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n",
__func__, __LINE__, ps3_result(result));
- irq_dispose_mapping(virq);
+ ps3_disconnect_irq(virq);
return result;
}
/**
* ps3_alloc_event_irq - Allocate a virq for use with a system event.
+ * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
+ * serviced on.
* @virq: The assigned Linux virq.
*
* The virq can be used with lv1_connect_interrupt_event_receive_port() to
* events.
*/
-int ps3_alloc_event_irq(unsigned int *virq)
+int ps3_alloc_event_irq(enum ps3_cpu_binding cpu, unsigned int *virq)
{
int result;
unsigned long outlet;
return result;
}
- *virq = irq_create_mapping(NULL, outlet);
-
- pr_debug("%s:%d: outlet %lu, virq %u\n", __func__, __LINE__, outlet,
- *virq);
+ result = ps3_connect_irq(cpu, outlet, virq);
+ BUG_ON(result);
- return 0;
+ return result;
}
int ps3_free_event_irq(unsigned int virq)
pr_debug("%s:%d: lv1_destruct_event_receive_port failed: %s\n",
__func__, __LINE__, ps3_result(result));
- irq_dispose_mapping(virq);
+ ps3_disconnect_irq(virq);
pr_debug(" <- %s:%d\n", __func__, __LINE__);
return result;
/**
* ps3_connect_event_irq - Assign a virq to a system bus device.
+ * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
+ * serviced on.
* @did: The HV device identifier read from the system repository.
* @interrupt_id: The device interrupt id read from the system repository.
* @virq: The assigned Linux virq.
* coresponds to the software interrupt number.
*/
-int ps3_connect_event_irq(const struct ps3_device_id *did,
- unsigned int interrupt_id, unsigned int *virq)
+int ps3_connect_event_irq(enum ps3_cpu_binding cpu,
+ const struct ps3_device_id *did, unsigned int interrupt_id,
+ unsigned int *virq)
{
int result;
- result = ps3_alloc_event_irq(virq);
+ result = ps3_alloc_event_irq(cpu, virq);
if (result)
return result;
/**
* ps3_alloc_vuart_irq - Configure the system virtual uart virq.
+ * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
+ * serviced on.
* @virt_addr_bmp: The caller supplied virtual uart interrupt bitmap.
* @virq: The assigned Linux virq.
*
* freeing the interrupt will return a wrong state error.
*/
-int ps3_alloc_vuart_irq(void* virt_addr_bmp, unsigned int *virq)
+int ps3_alloc_vuart_irq(enum ps3_cpu_binding cpu, void* virt_addr_bmp,
+ unsigned int *virq)
{
int result;
unsigned long outlet;
- unsigned long lpar_addr;
+ u64 lpar_addr;
- BUG_ON(!is_kernel_addr((unsigned long)virt_addr_bmp));
+ BUG_ON(!is_kernel_addr((u64)virt_addr_bmp));
lpar_addr = ps3_mm_phys_to_lpar(__pa(virt_addr_bmp));
return result;
}
- *virq = irq_create_mapping(NULL, outlet);
-
- pr_debug("%s:%d: outlet %lu, virq %u\n", __func__, __LINE__,
- outlet, *virq);
+ result = ps3_connect_irq(cpu, outlet, virq);
+ BUG_ON(result);
- return 0;
+ return result;
}
int ps3_free_vuart_irq(unsigned int virq)
return result;
}
- irq_dispose_mapping(virq);
+ ps3_disconnect_irq(virq);
return result;
}
/**
* ps3_alloc_spe_irq - Configure an spe virq.
+ * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
+ * serviced on.
* @spe_id: The spe_id returned from lv1_construct_logical_spe().
* @class: The spe interrupt class {0,1,2}.
* @virq: The assigned Linux virq.
*
*/
-int ps3_alloc_spe_irq(unsigned long spe_id, unsigned int class,
- unsigned int *virq)
+int ps3_alloc_spe_irq(enum ps3_cpu_binding cpu, unsigned long spe_id,
+ unsigned int class, unsigned int *virq)
{
int result;
unsigned long outlet;
return result;
}
- *virq = irq_create_mapping(NULL, outlet);
-
- pr_debug("%s:%d: spe_id %lu, class %u, outlet %lu, virq %u\n",
- __func__, __LINE__, spe_id, class, outlet, *virq);
+ result = ps3_connect_irq(cpu, outlet, virq);
+ BUG_ON(result);
- return 0;
+ return result;
}
int ps3_free_spe_irq(unsigned int virq)
{
- irq_dispose_mapping(virq);
+ ps3_disconnect_irq(virq);
return 0;
}
#define PS3_INVALID_OUTLET ((irq_hw_number_t)-1)
#define PS3_PLUG_MAX 63
-/**
- * struct ps3_bmp - a per cpu irq status and mask bitmap structure
- * @status: 256 bit status bitmap indexed by plug
- * @unused_1:
- * @mask: 256 bit mask bitmap indexed by plug
- * @unused_2:
- * @lock:
- * @ipi_debug_brk_mask:
- *
- * The HV mantains per SMT thread mappings of HV outlet to HV plug on
- * behalf of the guest. These mappings are implemented as 256 bit guest
- * supplied bitmaps indexed by plug number. The address of the bitmaps are
- * registered with the HV through lv1_configure_irq_state_bitmap().
- *
- * The HV supports 256 plugs per thread, assigned as {0..255}, for a total
- * of 512 plugs supported on a processor. To simplify the logic this
- * implementation equates HV plug value to linux virq value, constrains each
- * interrupt to have a system wide unique plug number, and limits the range
- * of the plug values to map into the first dword of the bitmaps. This
- * gives a usable range of plug values of {NUM_ISA_INTERRUPTS..63}. Note
- * that there is no constraint on how many in this set an individual thread
- * can aquire.
- */
-
-struct ps3_bmp {
- struct {
- unsigned long status;
- unsigned long unused_1[3];
- unsigned long mask;
- unsigned long unused_2[3];
- } __attribute__ ((aligned (64)));
-
- spinlock_t lock;
- unsigned long ipi_debug_brk_mask;
-};
-
-/**
- * struct ps3_private - a per cpu data structure
- * @bmp: ps3_bmp structure
- * @node: HV logical_ppe_id
- * @cpu: HV thread_id
- */
-
-struct ps3_private {
- struct ps3_bmp bmp;
- unsigned long node;
- unsigned int cpu;
-};
-
#if defined(DEBUG)
-static void _dump_64_bmp(const char *header, const unsigned long *p, unsigned cpu,
+static void _dump_64_bmp(const char *header, const u64 *p, unsigned cpu,
const char* func, int line)
{
pr_debug("%s:%d: %s %u {%04lx_%04lx_%04lx_%04lx}\n",
}
static void __attribute__ ((unused)) _dump_256_bmp(const char *header,
- const unsigned long *p, unsigned cpu, const char* func, int line)
+ const u64 *p, unsigned cpu, const char* func, int line)
{
pr_debug("%s:%d: %s %u {%016lx:%016lx:%016lx:%016lx}\n",
func, line, header, cpu, p[0], p[1], p[2], p[3]);
static void ps3_chip_mask(unsigned int virq)
{
struct ps3_private *pd = get_irq_chip_data(virq);
- unsigned long bit = 0x8000000000000000UL >> virq;
- unsigned long *p = &pd->bmp.mask;
- unsigned long old;
+ u64 bit = 0x8000000000000000UL >> virq;
+ u64 *p = &pd->bmp.mask;
+ u64 old;
unsigned long flags;
pr_debug("%s:%d: cpu %u, virq %d\n", __func__, __LINE__, pd->cpu, virq);
static void ps3_chip_unmask(unsigned int virq)
{
struct ps3_private *pd = get_irq_chip_data(virq);
- unsigned long bit = 0x8000000000000000UL >> virq;
- unsigned long *p = &pd->bmp.mask;
- unsigned long old;
+ u64 bit = 0x8000000000000000UL >> virq;
+ u64 *p = &pd->bmp.mask;
+ u64 old;
unsigned long flags;
pr_debug("%s:%d: cpu %u, virq %d\n", __func__, __LINE__, pd->cpu, virq);
static void ps3_host_unmap(struct irq_host *h, unsigned int virq)
{
- int result;
- const struct ps3_private *pd = get_irq_chip_data(virq);
-
- pr_debug("%s:%d: node %lu, cpu %d, virq %u\n", __func__, __LINE__,
- pd->node, pd->cpu, virq);
-
- lv1_disconnect_irq_plug_ext(pd->node, pd->cpu, virq);
-
- result = set_irq_chip_data(virq, NULL);
- BUG_ON(result);
+ set_irq_chip_data(virq, NULL);
}
-static DEFINE_PER_CPU(struct ps3_private, ps3_private);
-
static int ps3_host_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hwirq)
{
- int result;
- struct ps3_private *pd = &__get_cpu_var(ps3_private);
-
- pr_debug("%s:%d: node %lu, cpu %d, hwirq %lu => virq %u\n", __func__,
- __LINE__, pd->node, pd->cpu, hwirq, virq);
-
- /* Binds this virq to pd->cpu (current cpu) */
-
- result = lv1_connect_irq_plug_ext(pd->node, pd->cpu, virq, hwirq, 0);
-
- if (result) {
- pr_info("%s:%d: lv1_connect_irq_plug_ext failed:"
- " %s\n", __func__, __LINE__, ps3_result(result));
- return -EPERM;
- }
-
- result = set_irq_chip_data(virq, pd);
- BUG_ON(result);
+ pr_debug("%s:%d: hwirq %lu, virq %u\n", __func__, __LINE__, hwirq,
+ virq);
set_irq_chip_and_handler(virq, &irq_chip, handle_fasteoi_irq);
- return result;
+ return 0;
}
static struct irq_host_ops ps3_host_ops = {
unsigned int ps3_get_irq(void)
{
struct ps3_private *pd = &__get_cpu_var(ps3_private);
- unsigned long x = (pd->bmp.status & pd->bmp.mask);
+ u64 x = (pd->bmp.status & pd->bmp.mask);
unsigned int plug;
/* check for ipi break first to stop this cpu ASAP */
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff