diff options
Diffstat (limited to 'drivers/ps3/ps3-lpm.c')
| -rw-r--r-- | drivers/ps3/ps3-lpm.c | 1238 |
1 files changed, 1238 insertions, 0 deletions
diff --git a/drivers/ps3/ps3-lpm.c b/drivers/ps3/ps3-lpm.c new file mode 100644 index 0000000000..200ad87518 --- /dev/null +++ b/drivers/ps3/ps3-lpm.c @@ -0,0 +1,1238 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PS3 Logical Performance Monitor. + * + * Copyright (C) 2007 Sony Computer Entertainment Inc. + * Copyright 2007 Sony Corp. + */ + +#include <linux/slab.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/uaccess.h> +#include <asm/smp.h> +#include <asm/time.h> +#include <asm/ps3.h> +#include <asm/lv1call.h> +#include <asm/cell-pmu.h> + + +/* BOOKMARK tag macros */ +#define PS3_PM_BOOKMARK_START 0x8000000000000000ULL +#define PS3_PM_BOOKMARK_STOP 0x4000000000000000ULL +#define PS3_PM_BOOKMARK_TAG_KERNEL 0x1000000000000000ULL +#define PS3_PM_BOOKMARK_TAG_USER 0x3000000000000000ULL +#define PS3_PM_BOOKMARK_TAG_MASK_HI 0xF000000000000000ULL +#define PS3_PM_BOOKMARK_TAG_MASK_LO 0x0F00000000000000ULL + +/* CBE PM CONTROL register macros */ +#define PS3_PM_CONTROL_PPU_TH0_BOOKMARK 0x00001000 +#define PS3_PM_CONTROL_PPU_TH1_BOOKMARK 0x00000800 +#define PS3_PM_CONTROL_PPU_COUNT_MODE_MASK 0x000C0000 +#define PS3_PM_CONTROL_PPU_COUNT_MODE_PROBLEM 0x00080000 +#define PS3_WRITE_PM_MASK 0xFFFFFFFFFFFFFFFFULL + +/* CBE PM START STOP register macros */ +#define PS3_PM_START_STOP_PPU_TH0_BOOKMARK_START 0x02000000 +#define PS3_PM_START_STOP_PPU_TH1_BOOKMARK_START 0x01000000 +#define PS3_PM_START_STOP_PPU_TH0_BOOKMARK_STOP 0x00020000 +#define PS3_PM_START_STOP_PPU_TH1_BOOKMARK_STOP 0x00010000 +#define PS3_PM_START_STOP_START_MASK 0xFF000000 +#define PS3_PM_START_STOP_STOP_MASK 0x00FF0000 + +/* CBE PM COUNTER register macres */ +#define PS3_PM_COUNTER_MASK_HI 0xFFFFFFFF00000000ULL +#define PS3_PM_COUNTER_MASK_LO 0x00000000FFFFFFFFULL + +/* BASE SIGNAL GROUP NUMBER macros */ +#define PM_ISLAND2_BASE_SIGNAL_GROUP_NUMBER 0 +#define PM_ISLAND2_SIGNAL_GROUP_NUMBER1 6 +#define PM_ISLAND2_SIGNAL_GROUP_NUMBER2 7 +#define PM_ISLAND3_BASE_SIGNAL_GROUP_NUMBER 7 +#define PM_ISLAND4_BASE_SIGNAL_GROUP_NUMBER 15 +#define PM_SPU_TRIGGER_SIGNAL_GROUP_NUMBER 17 +#define PM_SPU_EVENT_SIGNAL_GROUP_NUMBER 18 +#define PM_ISLAND5_BASE_SIGNAL_GROUP_NUMBER 18 +#define PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER 24 +#define PM_ISLAND7_BASE_SIGNAL_GROUP_NUMBER 49 +#define PM_ISLAND8_BASE_SIGNAL_GROUP_NUMBER 52 +#define PM_SIG_GROUP_SPU 41 +#define PM_SIG_GROUP_SPU_TRIGGER 42 +#define PM_SIG_GROUP_SPU_EVENT 43 +#define PM_SIG_GROUP_MFC_MAX 60 + +/** + * struct ps3_lpm_shadow_regs - Performance monitor shadow registers. + * + * @pm_control: Shadow of the processor's pm_control register. + * @pm_start_stop: Shadow of the processor's pm_start_stop register. + * @group_control: Shadow of the processor's group_control register. + * @debug_bus_control: Shadow of the processor's debug_bus_control register. + * + * The logical performance monitor provides a write-only interface to + * these processor registers. These shadow variables cache the processor + * register values for reading. + * + * The initial value of the shadow registers at lpm creation is + * PS3_LPM_SHADOW_REG_INIT. + */ + +struct ps3_lpm_shadow_regs { + u64 pm_control; + u64 pm_start_stop; + u64 group_control; + u64 debug_bus_control; +}; + +#define PS3_LPM_SHADOW_REG_INIT 0xFFFFFFFF00000000ULL + +/** + * struct ps3_lpm_priv - Private lpm device data. + * + * @open: An atomic variable indicating the lpm driver has been opened. + * @rights: The lpm rigths granted by the system policy module. A logical + * OR of enum ps3_lpm_rights. + * @node_id: The node id of a BE processor whose performance monitor this + * lpar has the right to use. + * @pu_id: The lv1 id of the logical PU. + * @lpm_id: The lv1 id of this lpm instance. + * @outlet_id: The outlet created by lv1 for this lpm instance. + * @tb_count: The number of bytes of data held in the lv1 trace buffer. + * @tb_cache: Kernel buffer to receive the data from the lv1 trace buffer. + * Must be 128 byte aligned. + * @tb_cache_size: Size of the kernel @tb_cache buffer. Must be 128 byte + * aligned. + * @tb_cache_internal: An unaligned buffer allocated by this driver to be + * used for the trace buffer cache when ps3_lpm_open() is called with a + * NULL tb_cache argument. Otherwise unused. + * @shadow: Processor register shadow of type struct ps3_lpm_shadow_regs. + * @sbd: The struct ps3_system_bus_device attached to this driver. + * + * The trace buffer is a buffer allocated and used internally to the lv1 + * hypervisor to collect trace data. The trace buffer cache is a guest + * buffer that accepts the trace data from the trace buffer. + */ + +struct ps3_lpm_priv { + atomic_t open; + u64 rights; + u64 node_id; + u64 pu_id; + u64 lpm_id; + u64 outlet_id; + u64 tb_count; + void *tb_cache; + u64 tb_cache_size; + void *tb_cache_internal; + struct ps3_lpm_shadow_regs shadow; + struct ps3_system_bus_device *sbd; +}; + +enum { + PS3_LPM_DEFAULT_TB_CACHE_SIZE = 0x4000, +}; + +/** + * lpm_priv - Static instance of the lpm data. + * + * Since the exported routines don't support the notion of a device + * instance we need to hold the instance in this static variable + * and then only allow at most one instance at a time to be created. + */ + +static struct ps3_lpm_priv *lpm_priv; + +static struct device *sbd_core(void) +{ + BUG_ON(!lpm_priv || !lpm_priv->sbd); + return &lpm_priv->sbd->core; +} + +/** + * use_start_stop_bookmark - Enable the PPU bookmark trace. + * + * And it enables PPU bookmark triggers ONLY if the other triggers are not set. + * The start/stop bookmarks are inserted at ps3_enable_pm() and ps3_disable_pm() + * to start/stop LPM. + * + * Used to get good quality of the performance counter. + */ + +enum {use_start_stop_bookmark = 1,}; + +void ps3_set_bookmark(u64 bookmark) +{ + /* + * As per the PPE book IV, to avoid bookmark loss there must + * not be a traced branch within 10 cycles of setting the + * SPRN_BKMK register. The actual text is unclear if 'within' + * includes cycles before the call. + */ + + asm volatile("nop;nop;nop;nop;nop;nop;nop;nop;nop;"); + mtspr(SPRN_BKMK, bookmark); + asm volatile("nop;nop;nop;nop;nop;nop;nop;nop;nop;"); +} +EXPORT_SYMBOL_GPL(ps3_set_bookmark); + +void ps3_set_pm_bookmark(u64 tag, u64 incident, u64 th_id) +{ + u64 bookmark; + + bookmark = (get_tb() & 0x00000000FFFFFFFFULL) | + PS3_PM_BOOKMARK_TAG_KERNEL; + bookmark = ((tag << 56) & PS3_PM_BOOKMARK_TAG_MASK_LO) | + (incident << 48) | (th_id << 32) | bookmark; + ps3_set_bookmark(bookmark); +} +EXPORT_SYMBOL_GPL(ps3_set_pm_bookmark); + +/** + * ps3_read_phys_ctr - Read physical counter registers. + * + * Each physical counter can act as one 32 bit counter or as two 16 bit + * counters. + */ + +u32 ps3_read_phys_ctr(u32 cpu, u32 phys_ctr) +{ + int result; + u64 counter0415; + u64 counter2637; + + if (phys_ctr >= NR_PHYS_CTRS) { + dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__, + __LINE__, phys_ctr); + return 0; + } + + result = lv1_set_lpm_counter(lpm_priv->lpm_id, 0, 0, 0, 0, &counter0415, + &counter2637); + if (result) { + dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter failed: " + "phys_ctr %u, %s\n", __func__, __LINE__, phys_ctr, + ps3_result(result)); + return 0; + } + + switch (phys_ctr) { + case 0: + return counter0415 >> 32; + case 1: + return counter0415 & PS3_PM_COUNTER_MASK_LO; + case 2: + return counter2637 >> 32; + case 3: + return counter2637 & PS3_PM_COUNTER_MASK_LO; + default: + BUG(); + } + return 0; +} +EXPORT_SYMBOL_GPL(ps3_read_phys_ctr); + +/** + * ps3_write_phys_ctr - Write physical counter registers. + * + * Each physical counter can act as one 32 bit counter or as two 16 bit + * counters. + */ + +void ps3_write_phys_ctr(u32 cpu, u32 phys_ctr, u32 val) +{ + u64 counter0415; + u64 counter0415_mask; + u64 counter2637; + u64 counter2637_mask; + int result; + + if (phys_ctr >= NR_PHYS_CTRS) { + dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__, + __LINE__, phys_ctr); + return; + } + + switch (phys_ctr) { + case 0: + counter0415 = (u64)val << 32; + counter0415_mask = PS3_PM_COUNTER_MASK_HI; + counter2637 = 0x0; + counter2637_mask = 0x0; + break; + case 1: + counter0415 = (u64)val; + counter0415_mask = PS3_PM_COUNTER_MASK_LO; + counter2637 = 0x0; + counter2637_mask = 0x0; + break; + case 2: + counter0415 = 0x0; + counter0415_mask = 0x0; + counter2637 = (u64)val << 32; + counter2637_mask = PS3_PM_COUNTER_MASK_HI; + break; + case 3: + counter0415 = 0x0; + counter0415_mask = 0x0; + counter2637 = (u64)val; + counter2637_mask = PS3_PM_COUNTER_MASK_LO; + break; + default: + BUG(); + } + + result = lv1_set_lpm_counter(lpm_priv->lpm_id, + counter0415, counter0415_mask, + counter2637, counter2637_mask, + &counter0415, &counter2637); + if (result) + dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter failed: " + "phys_ctr %u, val %u, %s\n", __func__, __LINE__, + phys_ctr, val, ps3_result(result)); +} +EXPORT_SYMBOL_GPL(ps3_write_phys_ctr); + +/** + * ps3_read_ctr - Read counter. + * + * Read 16 or 32 bits depending on the current size of the counter. + * Counters 4, 5, 6 & 7 are always 16 bit. + */ + +u32 ps3_read_ctr(u32 cpu, u32 ctr) +{ + u32 val; + u32 phys_ctr = ctr & (NR_PHYS_CTRS - 1); + + val = ps3_read_phys_ctr(cpu, phys_ctr); + + if (ps3_get_ctr_size(cpu, phys_ctr) == 16) + val = (ctr < NR_PHYS_CTRS) ? (val >> 16) : (val & 0xffff); + + return val; +} +EXPORT_SYMBOL_GPL(ps3_read_ctr); + +/** + * ps3_write_ctr - Write counter. + * + * Write 16 or 32 bits depending on the current size of the counter. + * Counters 4, 5, 6 & 7 are always 16 bit. + */ + +void ps3_write_ctr(u32 cpu, u32 ctr, u32 val) +{ + u32 phys_ctr; + u32 phys_val; + + phys_ctr = ctr & (NR_PHYS_CTRS - 1); + + if (ps3_get_ctr_size(cpu, phys_ctr) == 16) { + phys_val = ps3_read_phys_ctr(cpu, phys_ctr); + + if (ctr < NR_PHYS_CTRS) + val = (val << 16) | (phys_val & 0xffff); + else + val = (val & 0xffff) | (phys_val & 0xffff0000); + } + + ps3_write_phys_ctr(cpu, phys_ctr, val); +} +EXPORT_SYMBOL_GPL(ps3_write_ctr); + +/** + * ps3_read_pm07_control - Read counter control registers. + * + * Each logical counter has a corresponding control register. + */ + +u32 ps3_read_pm07_control(u32 cpu, u32 ctr) +{ + return 0; +} +EXPORT_SYMBOL_GPL(ps3_read_pm07_control); + +/** + * ps3_write_pm07_control - Write counter control registers. + * + * Each logical counter has a corresponding control register. + */ + +void ps3_write_pm07_control(u32 cpu, u32 ctr, u32 val) +{ + int result; + static const u64 mask = 0xFFFFFFFFFFFFFFFFULL; + u64 old_value; + + if (ctr >= NR_CTRS) { + dev_dbg(sbd_core(), "%s:%u: ctr too big: %u\n", __func__, + __LINE__, ctr); + return; + } + + result = lv1_set_lpm_counter_control(lpm_priv->lpm_id, ctr, val, mask, + &old_value); + if (result) + dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter_control " + "failed: ctr %u, %s\n", __func__, __LINE__, ctr, + ps3_result(result)); +} +EXPORT_SYMBOL_GPL(ps3_write_pm07_control); + +/** + * ps3_read_pm - Read Other LPM control registers. + */ + +u32 ps3_read_pm(u32 cpu, enum pm_reg_name reg) +{ + int result = 0; + u64 val = 0; + + switch (reg) { + case pm_control: + return lpm_priv->shadow.pm_control; + case trace_address: + return CBE_PM_TRACE_BUF_EMPTY; + case pm_start_stop: + return lpm_priv->shadow.pm_start_stop; + case pm_interval: + result = lv1_set_lpm_interval(lpm_priv->lpm_id, 0, 0, &val); + if (result) { + val = 0; + dev_dbg(sbd_core(), "%s:%u: lv1 set_interval failed: " + "reg %u, %s\n", __func__, __LINE__, reg, + ps3_result(result)); + } + return (u32)val; + case group_control: + return lpm_priv->shadow.group_control; + case debug_bus_control: + return lpm_priv->shadow.debug_bus_control; + case pm_status: + result = lv1_get_lpm_interrupt_status(lpm_priv->lpm_id, + &val); + if (result) { + val = 0; + dev_dbg(sbd_core(), "%s:%u: lv1 get_lpm_status failed: " + "reg %u, %s\n", __func__, __LINE__, reg, + ps3_result(result)); + } + return (u32)val; + case ext_tr_timer: + return 0; + default: + dev_dbg(sbd_core(), "%s:%u: unknown reg: %d\n", __func__, + __LINE__, reg); + BUG(); + break; + } + + return 0; +} +EXPORT_SYMBOL_GPL(ps3_read_pm); + +/** + * ps3_write_pm - Write Other LPM control registers. + */ + +void ps3_write_pm(u32 cpu, enum pm_reg_name reg, u32 val) +{ + int result = 0; + u64 dummy; + + switch (reg) { + case group_control: + if (val != lpm_priv->shadow.group_control) + result = lv1_set_lpm_group_control(lpm_priv->lpm_id, + val, + PS3_WRITE_PM_MASK, + &dummy); + lpm_priv->shadow.group_control = val; + break; + case debug_bus_control: + if (val != lpm_priv->shadow.debug_bus_control) + result = lv1_set_lpm_debug_bus_control(lpm_priv->lpm_id, + val, + PS3_WRITE_PM_MASK, + &dummy); + lpm_priv->shadow.debug_bus_control = val; + break; + case pm_control: + if (use_start_stop_bookmark) + val |= (PS3_PM_CONTROL_PPU_TH0_BOOKMARK | + PS3_PM_CONTROL_PPU_TH1_BOOKMARK); + if (val != lpm_priv->shadow.pm_control) + result = lv1_set_lpm_general_control(lpm_priv->lpm_id, + val, + PS3_WRITE_PM_MASK, + 0, 0, &dummy, + &dummy); + lpm_priv->shadow.pm_control = val; + break; + case pm_interval: + result = lv1_set_lpm_interval(lpm_priv->lpm_id, val, + PS3_WRITE_PM_MASK, &dummy); + break; + case pm_start_stop: + if (val != lpm_priv->shadow.pm_start_stop) + result = lv1_set_lpm_trigger_control(lpm_priv->lpm_id, + val, + PS3_WRITE_PM_MASK, + &dummy); + lpm_priv->shadow.pm_start_stop = val; + break; + case trace_address: + case ext_tr_timer: + case pm_status: + break; + default: + dev_dbg(sbd_core(), "%s:%u: unknown reg: %d\n", __func__, + __LINE__, reg); + BUG(); + break; + } + + if (result) + dev_err(sbd_core(), "%s:%u: lv1 set_control failed: " + "reg %u, %s\n", __func__, __LINE__, reg, + ps3_result(result)); +} +EXPORT_SYMBOL_GPL(ps3_write_pm); + +/** + * ps3_get_ctr_size - Get the size of a physical counter. + * + * Returns either 16 or 32. + */ + +u32 ps3_get_ctr_size(u32 cpu, u32 phys_ctr) +{ + u32 pm_ctrl; + + if (phys_ctr >= NR_PHYS_CTRS) { + dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__, + __LINE__, phys_ctr); + return 0; + } + + pm_ctrl = ps3_read_pm(cpu, pm_control); + return (pm_ctrl & CBE_PM_16BIT_CTR(phys_ctr)) ? 16 : 32; +} +EXPORT_SYMBOL_GPL(ps3_get_ctr_size); + +/** + * ps3_set_ctr_size - Set the size of a physical counter to 16 or 32 bits. + */ + +void ps3_set_ctr_size(u32 cpu, u32 phys_ctr, u32 ctr_size) +{ + u32 pm_ctrl; + + if (phys_ctr >= NR_PHYS_CTRS) { + dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__, + __LINE__, phys_ctr); + return; + } + + pm_ctrl = ps3_read_pm(cpu, pm_control); + + switch (ctr_size) { + case 16: + pm_ctrl |= CBE_PM_16BIT_CTR(phys_ctr); + ps3_write_pm(cpu, pm_control, pm_ctrl); + break; + + case 32: + pm_ctrl &= ~CBE_PM_16BIT_CTR(phys_ctr); + ps3_write_pm(cpu, pm_control, pm_ctrl); + break; + default: + BUG(); + } +} +EXPORT_SYMBOL_GPL(ps3_set_ctr_size); + +static u64 pm_translate_signal_group_number_on_island2(u64 subgroup) +{ + + if (subgroup == 2) + subgroup = 3; + + if (subgroup <= 6) + return PM_ISLAND2_BASE_SIGNAL_GROUP_NUMBER + subgroup; + else if (subgroup == 7) + return PM_ISLAND2_SIGNAL_GROUP_NUMBER1; + else + return PM_ISLAND2_SIGNAL_GROUP_NUMBER2; +} + +static u64 pm_translate_signal_group_number_on_island3(u64 subgroup) +{ + + switch (subgroup) { + case 2: + case 3: + case 4: + subgroup += 2; + break; + case 5: + subgroup = 8; + break; + default: + break; + } + return PM_ISLAND3_BASE_SIGNAL_GROUP_NUMBER + subgroup; +} + +static u64 pm_translate_signal_group_number_on_island4(u64 subgroup) +{ + return PM_ISLAND4_BASE_SIGNAL_GROUP_NUMBER + subgroup; +} + +static u64 pm_translate_signal_group_number_on_island5(u64 subgroup) +{ + + switch (subgroup) { + case 3: + subgroup = 4; + break; + case 4: + subgroup = 6; + break; + default: + break; + } + return PM_ISLAND5_BASE_SIGNAL_GROUP_NUMBER + subgroup; +} + +static u64 pm_translate_signal_group_number_on_island6(u64 subgroup, + u64 subsubgroup) +{ + switch (subgroup) { + case 3: + case 4: + case 5: + subgroup += 1; + break; + default: + break; + } + + switch (subsubgroup) { + case 4: + case 5: + case 6: + subsubgroup += 2; + break; + case 7: + case 8: + case 9: + case 10: + subsubgroup += 4; + break; + case 11: + case 12: + case 13: + subsubgroup += 5; + break; + default: + break; + } + + if (subgroup <= 5) + return (PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER + subgroup); + else + return (PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER + subgroup + + subsubgroup - 1); +} + +static u64 pm_translate_signal_group_number_on_island7(u64 subgroup) +{ + return PM_ISLAND7_BASE_SIGNAL_GROUP_NUMBER + subgroup; +} + +static u64 pm_translate_signal_group_number_on_island8(u64 subgroup) +{ + return PM_ISLAND8_BASE_SIGNAL_GROUP_NUMBER + subgroup; +} + +static u64 pm_signal_group_to_ps3_lv1_signal_group(u64 group) +{ + u64 island; + u64 subgroup; + u64 subsubgroup; + + subgroup = 0; + subsubgroup = 0; + island = 0; + if (group < 1000) { + if (group < 100) { + if (20 <= group && group < 30) { + island = 2; + subgroup = group - 20; + } else if (30 <= group && group < 40) { + island = 3; + subgroup = group - 30; + } else if (40 <= group && group < 50) { + island = 4; + subgroup = group - 40; + } else if (50 <= group && group < 60) { + island = 5; + subgroup = group - 50; + } else if (60 <= group && group < 70) { + island = 6; + subgroup = group - 60; + } else if (70 <= group && group < 80) { + island = 7; + subgroup = group - 70; + } else if (80 <= group && group < 90) { + island = 8; + subgroup = group - 80; + } + } else if (200 <= group && group < 300) { + island = 2; + subgroup = group - 200; + } else if (600 <= group && group < 700) { + island = 6; + subgroup = 5; + subsubgroup = group - 650; + } + } else if (6000 <= group && group < 7000) { + island = 6; + subgroup = 5; + subsubgroup = group - 6500; + } + + switch (island) { + case 2: + return pm_translate_signal_group_number_on_island2(subgroup); + case 3: + return pm_translate_signal_group_number_on_island3(subgroup); + case 4: + return pm_translate_signal_group_number_on_island4(subgroup); + case 5: + return pm_translate_signal_group_number_on_island5(subgroup); + case 6: + return pm_translate_signal_group_number_on_island6(subgroup, + subsubgroup); + case 7: + return pm_translate_signal_group_number_on_island7(subgroup); + case 8: + return pm_translate_signal_group_number_on_island8(subgroup); + default: + dev_dbg(sbd_core(), "%s:%u: island not found: %llu\n", __func__, + __LINE__, group); + BUG(); + break; + } + return 0; +} + +static u64 pm_bus_word_to_ps3_lv1_bus_word(u8 word) +{ + + switch (word) { + case 1: + return 0xF000; + case 2: + return 0x0F00; + case 4: + return 0x00F0; + case 8: + default: + return 0x000F; + } +} + +static int __ps3_set_signal(u64 lv1_signal_group, u64 bus_select, + u64 signal_select, u64 attr1, u64 attr2, u64 attr3) +{ + int ret; + + ret = lv1_set_lpm_signal(lpm_priv->lpm_id, lv1_signal_group, bus_select, + signal_select, attr1, attr2, attr3); + if (ret) + dev_err(sbd_core(), + "%s:%u: error:%d 0x%llx 0x%llx 0x%llx 0x%llx 0x%llx 0x%llx\n", + __func__, __LINE__, ret, lv1_signal_group, bus_select, + signal_select, attr1, attr2, attr3); + + return ret; +} + +int ps3_set_signal(u64 signal_group, u8 signal_bit, u16 sub_unit, + u8 bus_word) +{ + int ret; + u64 lv1_signal_group; + u64 bus_select; + u64 signal_select; + u64 attr1, attr2, attr3; + + if (signal_group == 0) + return __ps3_set_signal(0, 0, 0, 0, 0, 0); + + lv1_signal_group = + pm_signal_group_to_ps3_lv1_signal_group(signal_group); + bus_select = pm_bus_word_to_ps3_lv1_bus_word(bus_word); + + switch (signal_group) { + case PM_SIG_GROUP_SPU_TRIGGER: + signal_select = 1; + signal_select = signal_select << (63 - signal_bit); + break; + case PM_SIG_GROUP_SPU_EVENT: + signal_select = 1; + signal_select = (signal_select << (63 - signal_bit)) | 0x3; + break; + default: + signal_select = 0; + break; + } + + /* + * 0: physical object. + * 1: logical object. + * This parameter is only used for the PPE and SPE signals. + */ + attr1 = 1; + + /* + * This parameter is used to specify the target physical/logical + * PPE/SPE object. + */ + if (PM_SIG_GROUP_SPU <= signal_group && + signal_group < PM_SIG_GROUP_MFC_MAX) + attr2 = sub_unit; + else + attr2 = lpm_priv->pu_id; + + /* + * This parameter is only used for setting the SPE signal. + */ + attr3 = 0; + + ret = __ps3_set_signal(lv1_signal_group, bus_select, signal_select, + attr1, attr2, attr3); + if (ret) + dev_err(sbd_core(), "%s:%u: __ps3_set_signal failed: %d\n", + __func__, __LINE__, ret); + + return ret; +} +EXPORT_SYMBOL_GPL(ps3_set_signal); + +u32 ps3_get_hw_thread_id(int cpu) +{ + return get_hard_smp_processor_id(cpu); +} +EXPORT_SYMBOL_GPL(ps3_get_hw_thread_id); + +/** + * ps3_enable_pm - Enable the entire performance monitoring unit. + * + * When we enable the LPM, all pending writes to counters get committed. + */ + +void ps3_enable_pm(u32 cpu) +{ + int result; + u64 tmp; + int insert_bookmark = 0; + + lpm_priv->tb_count = 0; + + if (use_start_stop_bookmark) { + if (!(lpm_priv->shadow.pm_start_stop & + (PS3_PM_START_STOP_START_MASK + | PS3_PM_START_STOP_STOP_MASK))) { + result = lv1_set_lpm_trigger_control(lpm_priv->lpm_id, + (PS3_PM_START_STOP_PPU_TH0_BOOKMARK_START | + PS3_PM_START_STOP_PPU_TH1_BOOKMARK_START | + PS3_PM_START_STOP_PPU_TH0_BOOKMARK_STOP | + PS3_PM_START_STOP_PPU_TH1_BOOKMARK_STOP), + 0xFFFFFFFFFFFFFFFFULL, &tmp); + + if (result) + dev_err(sbd_core(), "%s:%u: " + "lv1_set_lpm_trigger_control failed: " + "%s\n", __func__, __LINE__, + ps3_result(result)); + + insert_bookmark = !result; + } + } + + result = lv1_start_lpm(lpm_priv->lpm_id); + + if (result) + dev_err(sbd_core(), "%s:%u: lv1_start_lpm failed: %s\n", + __func__, __LINE__, ps3_result(result)); + + if (use_start_stop_bookmark && !result && insert_bookmark) + ps3_set_bookmark(get_tb() | PS3_PM_BOOKMARK_START); +} +EXPORT_SYMBOL_GPL(ps3_enable_pm); + +/** + * ps3_disable_pm - Disable the entire performance monitoring unit. + */ + +void ps3_disable_pm(u32 cpu) +{ + int result; + u64 tmp; + + ps3_set_bookmark(get_tb() | PS3_PM_BOOKMARK_STOP); + + result = lv1_stop_lpm(lpm_priv->lpm_id, &tmp); + + if (result) { + if (result != LV1_WRONG_STATE) + dev_err(sbd_core(), "%s:%u: lv1_stop_lpm failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return; + } + + lpm_priv->tb_count = tmp; + + dev_dbg(sbd_core(), "%s:%u: tb_count %llu (%llxh)\n", __func__, __LINE__, + lpm_priv->tb_count, lpm_priv->tb_count); +} +EXPORT_SYMBOL_GPL(ps3_disable_pm); + +/** + * ps3_lpm_copy_tb - Copy data from the trace buffer to a kernel buffer. + * @offset: Offset in bytes from the start of the trace buffer. + * @buf: Copy destination. + * @count: Maximum count of bytes to copy. + * @bytes_copied: Pointer to a variable that will receive the number of + * bytes copied to @buf. + * + * On error @buf will contain any successfully copied trace buffer data + * and bytes_copied will be set to the number of bytes successfully copied. + */ + +int ps3_lpm_copy_tb(unsigned long offset, void *buf, unsigned long count, + unsigned long *bytes_copied) +{ + int result; + + *bytes_copied = 0; + + if (!lpm_priv->tb_cache) + return -EPERM; + + if (offset >= lpm_priv->tb_count) + return 0; + + count = min_t(u64, count, lpm_priv->tb_count - offset); + + while (*bytes_copied < count) { + const unsigned long request = count - *bytes_copied; + u64 tmp; + + result = lv1_copy_lpm_trace_buffer(lpm_priv->lpm_id, offset, + request, &tmp); + if (result) { + dev_dbg(sbd_core(), "%s:%u: 0x%lx bytes at 0x%lx\n", + __func__, __LINE__, request, offset); + + dev_err(sbd_core(), "%s:%u: lv1_copy_lpm_trace_buffer " + "failed: %s\n", __func__, __LINE__, + ps3_result(result)); + return result == LV1_WRONG_STATE ? -EBUSY : -EINVAL; + } + + memcpy(buf, lpm_priv->tb_cache, tmp); + buf += tmp; + *bytes_copied += tmp; + offset += tmp; + } + dev_dbg(sbd_core(), "%s:%u: copied %lxh bytes\n", __func__, __LINE__, + *bytes_copied); + + return 0; +} +EXPORT_SYMBOL_GPL(ps3_lpm_copy_tb); + +/** + * ps3_lpm_copy_tb_to_user - Copy data from the trace buffer to a user buffer. + * @offset: Offset in bytes from the start of the trace buffer. + * @buf: A __user copy destination. + * @count: Maximum count of bytes to copy. + * @bytes_copied: Pointer to a variable that will receive the number of + * bytes copied to @buf. + * + * On error @buf will contain any successfully copied trace buffer data + * and bytes_copied will be set to the number of bytes successfully copied. + */ + +int ps3_lpm_copy_tb_to_user(unsigned long offset, void __user *buf, + unsigned long count, unsigned long *bytes_copied) +{ + int result; + + *bytes_copied = 0; + + if (!lpm_priv->tb_cache) + return -EPERM; + + if (offset >= lpm_priv->tb_count) + return 0; + + count = min_t(u64, count, lpm_priv->tb_count - offset); + + while (*bytes_copied < count) { + const unsigned long request = count - *bytes_copied; + u64 tmp; + + result = lv1_copy_lpm_trace_buffer(lpm_priv->lpm_id, offset, + request, &tmp); + if (result) { + dev_dbg(sbd_core(), "%s:%u: 0x%lx bytes at 0x%lx\n", + __func__, __LINE__, request, offset); + dev_err(sbd_core(), "%s:%u: lv1_copy_lpm_trace_buffer " + "failed: %s\n", __func__, __LINE__, + ps3_result(result)); + return result == LV1_WRONG_STATE ? -EBUSY : -EINVAL; + } + + result = copy_to_user(buf, lpm_priv->tb_cache, tmp); + + if (result) { + dev_dbg(sbd_core(), "%s:%u: 0x%llx bytes at 0x%p\n", + __func__, __LINE__, tmp, buf); + dev_err(sbd_core(), "%s:%u: copy_to_user failed: %d\n", + __func__, __LINE__, result); + return -EFAULT; + } + + buf += tmp; + *bytes_copied += tmp; + offset += tmp; + } + dev_dbg(sbd_core(), "%s:%u: copied %lxh bytes\n", __func__, __LINE__, + *bytes_copied); + + return 0; +} +EXPORT_SYMBOL_GPL(ps3_lpm_copy_tb_to_user); + +/** + * ps3_get_and_clear_pm_interrupts - + * + * Clearing interrupts for the entire performance monitoring unit. + * Reading pm_status clears the interrupt bits. + */ + +u32 ps3_get_and_clear_pm_interrupts(u32 cpu) +{ + return ps3_read_pm(cpu, pm_status); +} +EXPORT_SYMBOL_GPL(ps3_get_and_clear_pm_interrupts); + +/** + * ps3_enable_pm_interrupts - + * + * Enabling interrupts for the entire performance monitoring unit. + * Enables the interrupt bits in the pm_status register. + */ + +void ps3_enable_pm_interrupts(u32 cpu, u32 thread, u32 mask) +{ + if (mask) + ps3_write_pm(cpu, pm_status, mask); +} +EXPORT_SYMBOL_GPL(ps3_enable_pm_interrupts); + +/** + * ps3_enable_pm_interrupts - + * + * Disabling interrupts for the entire performance monitoring unit. + */ + +void ps3_disable_pm_interrupts(u32 cpu) +{ + ps3_get_and_clear_pm_interrupts(cpu); + ps3_write_pm(cpu, pm_status, 0); +} +EXPORT_SYMBOL_GPL(ps3_disable_pm_interrupts); + +/** + * ps3_lpm_open - Open the logical performance monitor device. + * @tb_type: Specifies the type of trace buffer lv1 should use for this lpm + * instance, specified by one of enum ps3_lpm_tb_type. + * @tb_cache: Optional user supplied buffer to use as the trace buffer cache. + * If NULL, the driver will allocate and manage an internal buffer. + * Unused when @tb_type is PS3_LPM_TB_TYPE_NONE. + * @tb_cache_size: The size in bytes of the user supplied @tb_cache buffer. + * Unused when @tb_cache is NULL or @tb_type is PS3_LPM_TB_TYPE_NONE. + */ + +int ps3_lpm_open(enum ps3_lpm_tb_type tb_type, void *tb_cache, + u64 tb_cache_size) +{ + int result; + u64 tb_size; + + BUG_ON(!lpm_priv); + BUG_ON(tb_type != PS3_LPM_TB_TYPE_NONE + && tb_type != PS3_LPM_TB_TYPE_INTERNAL); + + if (tb_type == PS3_LPM_TB_TYPE_NONE && tb_cache) + dev_dbg(sbd_core(), "%s:%u: bad in vals\n", __func__, __LINE__); + + if (!atomic_add_unless(&lpm_priv->open, 1, 1)) { + dev_dbg(sbd_core(), "%s:%u: busy\n", __func__, __LINE__); + return -EBUSY; + } + + /* Note tb_cache needs 128 byte alignment. */ + + if (tb_type == PS3_LPM_TB_TYPE_NONE) { + lpm_priv->tb_cache_size = 0; + lpm_priv->tb_cache_internal = NULL; + lpm_priv->tb_cache = NULL; + } else if (tb_cache) { + if (tb_cache != (void *)ALIGN((unsigned long)tb_cache, 128) + || tb_cache_size != ALIGN(tb_cache_size, 128)) { + dev_err(sbd_core(), "%s:%u: unaligned tb_cache\n", + __func__, __LINE__); + result = -EINVAL; + goto fail_align; + } + lpm_priv->tb_cache_size = tb_cache_size; + lpm_priv->tb_cache_internal = NULL; + lpm_priv->tb_cache = tb_cache; + } else { + lpm_priv->tb_cache_size = PS3_LPM_DEFAULT_TB_CACHE_SIZE; + lpm_priv->tb_cache_internal = kzalloc( + lpm_priv->tb_cache_size + 127, GFP_KERNEL); + if (!lpm_priv->tb_cache_internal) { + result = -ENOMEM; + goto fail_malloc; + } + lpm_priv->tb_cache = (void *)ALIGN( + (unsigned long)lpm_priv->tb_cache_internal, 128); + } + + result = lv1_construct_lpm(lpm_priv->node_id, tb_type, 0, 0, + ps3_mm_phys_to_lpar(__pa(lpm_priv->tb_cache)), + lpm_priv->tb_cache_size, &lpm_priv->lpm_id, + &lpm_priv->outlet_id, &tb_size); + + if (result) { + dev_err(sbd_core(), "%s:%u: lv1_construct_lpm failed: %s\n", + __func__, __LINE__, ps3_result(result)); + result = -EINVAL; + goto fail_construct; + } + + lpm_priv->shadow.pm_control = PS3_LPM_SHADOW_REG_INIT; + lpm_priv->shadow.pm_start_stop = PS3_LPM_SHADOW_REG_INIT; + lpm_priv->shadow.group_control = PS3_LPM_SHADOW_REG_INIT; + lpm_priv->shadow.debug_bus_control = PS3_LPM_SHADOW_REG_INIT; + + dev_dbg(sbd_core(), "%s:%u: lpm_id 0x%llx, outlet_id 0x%llx, " + "tb_size 0x%llx\n", __func__, __LINE__, lpm_priv->lpm_id, + lpm_priv->outlet_id, tb_size); + + return 0; + +fail_construct: + kfree(lpm_priv->tb_cache_internal); + lpm_priv->tb_cache_internal = NULL; +fail_malloc: +fail_align: + atomic_dec(&lpm_priv->open); + return result; +} +EXPORT_SYMBOL_GPL(ps3_lpm_open); + +/** + * ps3_lpm_close - Close the lpm device. + * + */ + +int ps3_lpm_close(void) +{ + dev_dbg(sbd_core(), "%s:%u\n", __func__, __LINE__); + + lv1_destruct_lpm(lpm_priv->lpm_id); + lpm_priv->lpm_id = 0; + + kfree(lpm_priv->tb_cache_internal); + lpm_priv->tb_cache_internal = NULL; + + atomic_dec(&lpm_priv->open); + return 0; +} +EXPORT_SYMBOL_GPL(ps3_lpm_close); + +static int ps3_lpm_probe(struct ps3_system_bus_device *dev) +{ + dev_dbg(&dev->core, " -> %s:%u\n", __func__, __LINE__); + + if (lpm_priv) { + dev_info(&dev->core, "%s:%u: called twice\n", + __func__, __LINE__); + return -EBUSY; + } + + lpm_priv = kzalloc(sizeof(*lpm_priv), GFP_KERNEL); + + if (!lpm_priv) + return -ENOMEM; + + lpm_priv->sbd = dev; + lpm_priv->node_id = dev->lpm.node_id; + lpm_priv->pu_id = dev->lpm.pu_id; + lpm_priv->rights = dev->lpm.rights; + + dev_info(&dev->core, " <- %s:%u:\n", __func__, __LINE__); + + return 0; +} + +static void ps3_lpm_remove(struct ps3_system_bus_device *dev) +{ + dev_dbg(&dev->core, " -> %s:%u:\n", __func__, __LINE__); + + ps3_lpm_close(); + + kfree(lpm_priv); + lpm_priv = NULL; + + dev_info(&dev->core, " <- %s:%u:\n", __func__, __LINE__); +} + +static struct ps3_system_bus_driver ps3_lpm_driver = { + .match_id = PS3_MATCH_ID_LPM, + .core.name = "ps3-lpm", + .core.owner = THIS_MODULE, + .probe = ps3_lpm_probe, + .remove = ps3_lpm_remove, + .shutdown = ps3_lpm_remove, +}; + +static int __init ps3_lpm_init(void) +{ + pr_debug("%s:%d:\n", __func__, __LINE__); + return ps3_system_bus_driver_register(&ps3_lpm_driver); +} + +static void __exit ps3_lpm_exit(void) +{ + pr_debug("%s:%d:\n", __func__, __LINE__); + ps3_system_bus_driver_unregister(&ps3_lpm_driver); +} + +module_init(ps3_lpm_init); +module_exit(ps3_lpm_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("PS3 Logical Performance Monitor Driver"); +MODULE_AUTHOR("Sony Corporation"); +MODULE_ALIAS(PS3_MODULE_ALIAS_LPM); |