From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/ps3/Makefile | 8 + drivers/ps3/ps3-lpm.c | 1238 +++++++++++++++++++++++++++++++++++++++ drivers/ps3/ps3-sys-manager.c | 756 ++++++++++++++++++++++++ drivers/ps3/ps3-vuart.c | 1248 ++++++++++++++++++++++++++++++++++++++++ drivers/ps3/ps3av.c | 1062 ++++++++++++++++++++++++++++++++++ drivers/ps3/ps3av_cmd.c | 924 +++++++++++++++++++++++++++++ drivers/ps3/ps3stor_lib.c | 350 +++++++++++ drivers/ps3/sys-manager-core.c | 61 ++ drivers/ps3/vuart.h | 89 +++ 9 files changed, 5736 insertions(+) create mode 100644 drivers/ps3/Makefile create mode 100644 drivers/ps3/ps3-lpm.c create mode 100644 drivers/ps3/ps3-sys-manager.c create mode 100644 drivers/ps3/ps3-vuart.c create mode 100644 drivers/ps3/ps3av.c create mode 100644 drivers/ps3/ps3av_cmd.c create mode 100644 drivers/ps3/ps3stor_lib.c create mode 100644 drivers/ps3/sys-manager-core.c create mode 100644 drivers/ps3/vuart.h (limited to 'drivers/ps3') diff --git a/drivers/ps3/Makefile b/drivers/ps3/Makefile new file mode 100644 index 0000000000..c4d1f467f8 --- /dev/null +++ b/drivers/ps3/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_PS3_VUART) += ps3-vuart.o +obj-$(CONFIG_PS3_PS3AV) += ps3av_mod.o +ps3av_mod-y := ps3av.o ps3av_cmd.o +obj-$(CONFIG_PPC_PS3) += sys-manager-core.o +obj-$(CONFIG_PS3_SYS_MANAGER) += ps3-sys-manager.o +obj-$(CONFIG_PS3_STORAGE) += ps3stor_lib.o +obj-$(CONFIG_PS3_LPM) += ps3-lpm.o 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +/* 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); diff --git a/drivers/ps3/ps3-sys-manager.c b/drivers/ps3/ps3-sys-manager.c new file mode 100644 index 0000000000..ad8ef59dea --- /dev/null +++ b/drivers/ps3/ps3-sys-manager.c @@ -0,0 +1,756 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PS3 System Manager. + * + * Copyright (C) 2007 Sony Computer Entertainment Inc. + * Copyright 2007 Sony Corp. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "vuart.h" + +/** + * ps3_sys_manager - PS3 system manager driver. + * + * The system manager provides an asynchronous system event notification + * mechanism for reporting events like thermal alert and button presses to + * guests. It also provides support to control system shutdown and startup. + * + * The actual system manager is implemented as an application running in the + * system policy module in lpar_1. Guests communicate with the system manager + * through port 2 of the vuart using a simple packet message protocol. + * Messages are comprised of a fixed field header followed by a message + * specific payload. + */ + +/** + * struct ps3_sys_manager_header - System manager message header. + * @version: Header version, currently 1. + * @size: Header size in bytes, currently 16. + * @payload_size: Message payload size in bytes. + * @service_id: Message type, one of enum ps3_sys_manager_service_id. + * @request_tag: Unique number to identify reply. + */ + +struct ps3_sys_manager_header { + /* version 1 */ + u8 version; + u8 size; + u16 reserved_1; + u32 payload_size; + u16 service_id; + u16 reserved_2; + u32 request_tag; +}; + +#define dump_sm_header(_h) _dump_sm_header(_h, __func__, __LINE__) +static void __maybe_unused _dump_sm_header( + const struct ps3_sys_manager_header *h, const char *func, int line) +{ + pr_debug("%s:%d: version: %xh\n", func, line, h->version); + pr_debug("%s:%d: size: %xh\n", func, line, h->size); + pr_debug("%s:%d: payload_size: %xh\n", func, line, h->payload_size); + pr_debug("%s:%d: service_id: %xh\n", func, line, h->service_id); + pr_debug("%s:%d: request_tag: %xh\n", func, line, h->request_tag); +} + +/** + * @PS3_SM_RX_MSG_LEN_MIN - Shortest received message length. + * @PS3_SM_RX_MSG_LEN_MAX - Longest received message length. + * + * Currently all messages received from the system manager are either + * (16 bytes header + 8 bytes payload = 24 bytes) or (16 bytes header + * + 16 bytes payload = 32 bytes). This knowledge is used to simplify + * the logic. + */ + +enum { + PS3_SM_RX_MSG_LEN_MIN = 24, + PS3_SM_RX_MSG_LEN_MAX = 32, +}; + +/** + * enum ps3_sys_manager_service_id - Message header service_id. + * @PS3_SM_SERVICE_ID_REQUEST: guest --> sys_manager. + * @PS3_SM_SERVICE_ID_REQUEST_ERROR: guest <-- sys_manager. + * @PS3_SM_SERVICE_ID_COMMAND: guest <-- sys_manager. + * @PS3_SM_SERVICE_ID_RESPONSE: guest --> sys_manager. + * @PS3_SM_SERVICE_ID_SET_ATTR: guest --> sys_manager. + * @PS3_SM_SERVICE_ID_EXTERN_EVENT: guest <-- sys_manager. + * @PS3_SM_SERVICE_ID_SET_NEXT_OP: guest --> sys_manager. + * + * PS3_SM_SERVICE_ID_REQUEST_ERROR is returned for invalid data values in a + * a PS3_SM_SERVICE_ID_REQUEST message. It also seems to be returned when + * a REQUEST message is sent at the wrong time. + */ + +enum ps3_sys_manager_service_id { + /* version 1 */ + PS3_SM_SERVICE_ID_REQUEST = 1, + PS3_SM_SERVICE_ID_RESPONSE = 2, + PS3_SM_SERVICE_ID_COMMAND = 3, + PS3_SM_SERVICE_ID_EXTERN_EVENT = 4, + PS3_SM_SERVICE_ID_SET_NEXT_OP = 5, + PS3_SM_SERVICE_ID_REQUEST_ERROR = 6, + PS3_SM_SERVICE_ID_SET_ATTR = 8, +}; + +/** + * enum ps3_sys_manager_attr - Notification attribute (bit position mask). + * @PS3_SM_ATTR_POWER: Power button. + * @PS3_SM_ATTR_RESET: Reset button, not available on retail console. + * @PS3_SM_ATTR_THERMAL: System thermal alert. + * @PS3_SM_ATTR_CONTROLLER: Remote controller event. + * @PS3_SM_ATTR_ALL: Logical OR of all. + * + * The guest tells the system manager which events it is interested in receiving + * notice of by sending the system manager a logical OR of notification + * attributes via the ps3_sys_manager_send_attr() routine. + */ + +enum ps3_sys_manager_attr { + /* version 1 */ + PS3_SM_ATTR_POWER = 1, + PS3_SM_ATTR_RESET = 2, + PS3_SM_ATTR_THERMAL = 4, + PS3_SM_ATTR_CONTROLLER = 8, /* bogus? */ + PS3_SM_ATTR_ALL = 0x0f, +}; + +/** + * enum ps3_sys_manager_event - External event type, reported by system manager. + * @PS3_SM_EVENT_POWER_PRESSED: payload.value = + * enum ps3_sys_manager_button_event. + * @PS3_SM_EVENT_POWER_RELEASED: payload.value = time pressed in millisec. + * @PS3_SM_EVENT_RESET_PRESSED: payload.value = + * enum ps3_sys_manager_button_event. + * @PS3_SM_EVENT_RESET_RELEASED: payload.value = time pressed in millisec. + * @PS3_SM_EVENT_THERMAL_ALERT: payload.value = thermal zone id. + * @PS3_SM_EVENT_THERMAL_CLEARED: payload.value = thermal zone id. + */ + +enum ps3_sys_manager_event { + /* version 1 */ + PS3_SM_EVENT_POWER_PRESSED = 3, + PS3_SM_EVENT_POWER_RELEASED = 4, + PS3_SM_EVENT_RESET_PRESSED = 5, + PS3_SM_EVENT_RESET_RELEASED = 6, + PS3_SM_EVENT_THERMAL_ALERT = 7, + PS3_SM_EVENT_THERMAL_CLEARED = 8, + /* no info on controller events */ +}; + +/** + * enum ps3_sys_manager_button_event - Button event payload values. + * @PS3_SM_BUTTON_EVENT_HARD: Hardware generated event. + * @PS3_SM_BUTTON_EVENT_SOFT: Software generated event. + */ + +enum ps3_sys_manager_button_event { + PS3_SM_BUTTON_EVENT_HARD = 0, + PS3_SM_BUTTON_EVENT_SOFT = 1, +}; + +/** + * enum ps3_sys_manager_next_op - Operation to perform after lpar is destroyed. + */ + +enum ps3_sys_manager_next_op { + /* version 3 */ + PS3_SM_NEXT_OP_SYS_SHUTDOWN = 1, + PS3_SM_NEXT_OP_SYS_REBOOT = 2, + PS3_SM_NEXT_OP_LPAR_REBOOT = 0x82, +}; + +/** + * enum ps3_sys_manager_wake_source - Next-op wakeup source (bit position mask). + * @PS3_SM_WAKE_DEFAULT: Disk insert, power button, eject button. + * @PS3_SM_WAKE_W_O_L: Ether or wireless LAN. + * @PS3_SM_WAKE_P_O_R: Power on reset. + * + * Additional wakeup sources when specifying PS3_SM_NEXT_OP_SYS_SHUTDOWN. + * The system will always wake from the PS3_SM_WAKE_DEFAULT sources. + * Sources listed here are the only ones available to guests in the + * other-os lpar. + */ + +enum ps3_sys_manager_wake_source { + /* version 3 */ + PS3_SM_WAKE_DEFAULT = 0, + PS3_SM_WAKE_W_O_L = 0x00000400, + PS3_SM_WAKE_P_O_R = 0x80000000, +}; + +/** + * user_wake_sources - User specified wakeup sources. + * + * Logical OR of enum ps3_sys_manager_wake_source types. + */ + +static u32 user_wake_sources = PS3_SM_WAKE_DEFAULT; + +/** + * enum ps3_sys_manager_cmd - Command from system manager to guest. + * + * The guest completes the actions needed, then acks or naks the command via + * ps3_sys_manager_send_response(). In the case of @PS3_SM_CMD_SHUTDOWN, + * the guest must be fully prepared for a system poweroff prior to acking the + * command. + */ + +enum ps3_sys_manager_cmd { + /* version 1 */ + PS3_SM_CMD_SHUTDOWN = 1, /* shutdown guest OS */ +}; + +/** + * ps3_sm_force_power_off - Poweroff helper. + * + * A global variable used to force a poweroff when the power button has + * been pressed irrespective of how init handles the ctrl_alt_del signal. + * + */ + +static unsigned int ps3_sm_force_power_off; + +/** + * ps3_sys_manager_write - Helper to write a two part message to the vuart. + * + */ + +static int ps3_sys_manager_write(struct ps3_system_bus_device *dev, + const struct ps3_sys_manager_header *header, const void *payload) +{ + int result; + + BUG_ON(header->version != 1); + BUG_ON(header->size != 16); + BUG_ON(header->payload_size != 8 && header->payload_size != 16); + BUG_ON(header->service_id > 8); + + result = ps3_vuart_write(dev, header, + sizeof(struct ps3_sys_manager_header)); + + if (!result) + result = ps3_vuart_write(dev, payload, header->payload_size); + + return result; +} + +/** + * ps3_sys_manager_send_attr - Send a 'set attribute' to the system manager. + * + */ + +static int ps3_sys_manager_send_attr(struct ps3_system_bus_device *dev, + enum ps3_sys_manager_attr attr) +{ + struct ps3_sys_manager_header header; + struct { + u8 version; + u8 reserved_1[3]; + u32 attribute; + } payload; + + BUILD_BUG_ON(sizeof(payload) != 8); + + dev_dbg(&dev->core, "%s:%d: %xh\n", __func__, __LINE__, attr); + + memset(&header, 0, sizeof(header)); + header.version = 1; + header.size = 16; + header.payload_size = 16; + header.service_id = PS3_SM_SERVICE_ID_SET_ATTR; + + memset(&payload, 0, sizeof(payload)); + payload.version = 1; + payload.attribute = attr; + + return ps3_sys_manager_write(dev, &header, &payload); +} + +/** + * ps3_sys_manager_send_next_op - Send a 'set next op' to the system manager. + * + * Tell the system manager what to do after this lpar is destroyed. + */ + +static int ps3_sys_manager_send_next_op(struct ps3_system_bus_device *dev, + enum ps3_sys_manager_next_op op, + enum ps3_sys_manager_wake_source wake_source) +{ + struct ps3_sys_manager_header header; + struct { + u8 version; + u8 type; + u8 gos_id; + u8 reserved_1; + u32 wake_source; + u8 reserved_2[8]; + } payload; + + BUILD_BUG_ON(sizeof(payload) != 16); + + dev_dbg(&dev->core, "%s:%d: (%xh)\n", __func__, __LINE__, op); + + memset(&header, 0, sizeof(header)); + header.version = 1; + header.size = 16; + header.payload_size = 16; + header.service_id = PS3_SM_SERVICE_ID_SET_NEXT_OP; + + memset(&payload, 0, sizeof(payload)); + payload.version = 3; + payload.type = op; + payload.gos_id = 3; /* other os */ + payload.wake_source = wake_source; + + return ps3_sys_manager_write(dev, &header, &payload); +} + +/** + * ps3_sys_manager_send_request_shutdown - Send 'request' to the system manager. + * + * The guest sends this message to request an operation or action of the system + * manager. The reply is a command message from the system manager. In the + * command handler the guest performs the requested operation. The result of + * the command is then communicated back to the system manager with a response + * message. + * + * Currently, the only supported request is the 'shutdown self' request. + */ + +static int ps3_sys_manager_send_request_shutdown( + struct ps3_system_bus_device *dev) +{ + struct ps3_sys_manager_header header; + struct { + u8 version; + u8 type; + u8 gos_id; + u8 reserved_1[13]; + } payload; + + BUILD_BUG_ON(sizeof(payload) != 16); + + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + memset(&header, 0, sizeof(header)); + header.version = 1; + header.size = 16; + header.payload_size = 16; + header.service_id = PS3_SM_SERVICE_ID_REQUEST; + + memset(&payload, 0, sizeof(payload)); + payload.version = 1; + payload.type = 1; /* shutdown */ + payload.gos_id = 0; /* self */ + + return ps3_sys_manager_write(dev, &header, &payload); +} + +/** + * ps3_sys_manager_send_response - Send a 'response' to the system manager. + * @status: zero = success, others fail. + * + * The guest sends this message to the system manager to acnowledge success or + * failure of a command sent by the system manager. + */ + +static int ps3_sys_manager_send_response(struct ps3_system_bus_device *dev, + u64 status) +{ + struct ps3_sys_manager_header header; + struct { + u8 version; + u8 reserved_1[3]; + u8 status; + u8 reserved_2[11]; + } payload; + + BUILD_BUG_ON(sizeof(payload) != 16); + + dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__, + (status ? "nak" : "ack")); + + memset(&header, 0, sizeof(header)); + header.version = 1; + header.size = 16; + header.payload_size = 16; + header.service_id = PS3_SM_SERVICE_ID_RESPONSE; + + memset(&payload, 0, sizeof(payload)); + payload.version = 1; + payload.status = status; + + return ps3_sys_manager_write(dev, &header, &payload); +} + +/** + * ps3_sys_manager_handle_event - Second stage event msg handler. + * + */ + +static int ps3_sys_manager_handle_event(struct ps3_system_bus_device *dev) +{ + int result; + struct { + u8 version; + u8 type; + u8 reserved_1[2]; + u32 value; + u8 reserved_2[8]; + } event; + + BUILD_BUG_ON(sizeof(event) != 16); + + result = ps3_vuart_read(dev, &event, sizeof(event)); + BUG_ON(result && "need to retry here"); + + if (event.version != 1) { + dev_dbg(&dev->core, "%s:%d: unsupported event version (%u)\n", + __func__, __LINE__, event.version); + return -EIO; + } + + switch (event.type) { + case PS3_SM_EVENT_POWER_PRESSED: + dev_dbg(&dev->core, "%s:%d: POWER_PRESSED (%s)\n", + __func__, __LINE__, + (event.value == PS3_SM_BUTTON_EVENT_SOFT ? "soft" + : "hard")); + ps3_sm_force_power_off = 1; + /* + * A memory barrier is use here to sync memory since + * ps3_sys_manager_final_restart() could be called on + * another cpu. + */ + wmb(); + kill_cad_pid(SIGINT, 1); /* ctrl_alt_del */ + break; + case PS3_SM_EVENT_POWER_RELEASED: + dev_dbg(&dev->core, "%s:%d: POWER_RELEASED (%u ms)\n", + __func__, __LINE__, event.value); + break; + case PS3_SM_EVENT_RESET_PRESSED: + dev_dbg(&dev->core, "%s:%d: RESET_PRESSED (%s)\n", + __func__, __LINE__, + (event.value == PS3_SM_BUTTON_EVENT_SOFT ? "soft" + : "hard")); + ps3_sm_force_power_off = 0; + /* + * A memory barrier is use here to sync memory since + * ps3_sys_manager_final_restart() could be called on + * another cpu. + */ + wmb(); + kill_cad_pid(SIGINT, 1); /* ctrl_alt_del */ + break; + case PS3_SM_EVENT_RESET_RELEASED: + dev_dbg(&dev->core, "%s:%d: RESET_RELEASED (%u ms)\n", + __func__, __LINE__, event.value); + break; + case PS3_SM_EVENT_THERMAL_ALERT: + dev_dbg(&dev->core, "%s:%d: THERMAL_ALERT (zone %u)\n", + __func__, __LINE__, event.value); + pr_info("PS3 Thermal Alert Zone %u\n", event.value); + break; + case PS3_SM_EVENT_THERMAL_CLEARED: + dev_dbg(&dev->core, "%s:%d: THERMAL_CLEARED (zone %u)\n", + __func__, __LINE__, event.value); + break; + default: + dev_dbg(&dev->core, "%s:%d: unknown event (%u)\n", + __func__, __LINE__, event.type); + return -EIO; + } + + return 0; +} +/** + * ps3_sys_manager_handle_cmd - Second stage command msg handler. + * + * The system manager sends this in reply to a 'request' message from the guest. + */ + +static int ps3_sys_manager_handle_cmd(struct ps3_system_bus_device *dev) +{ + int result; + struct { + u8 version; + u8 type; + u8 reserved_1[14]; + } cmd; + + BUILD_BUG_ON(sizeof(cmd) != 16); + + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + result = ps3_vuart_read(dev, &cmd, sizeof(cmd)); + BUG_ON(result && "need to retry here"); + + if (result) + return result; + + if (cmd.version != 1) { + dev_dbg(&dev->core, "%s:%d: unsupported cmd version (%u)\n", + __func__, __LINE__, cmd.version); + return -EIO; + } + + if (cmd.type != PS3_SM_CMD_SHUTDOWN) { + dev_dbg(&dev->core, "%s:%d: unknown cmd (%u)\n", + __func__, __LINE__, cmd.type); + return -EIO; + } + + ps3_sys_manager_send_response(dev, 0); + return 0; +} + +/** + * ps3_sys_manager_handle_msg - First stage msg handler. + * + * Can be called directly to manually poll vuart and pump message handler. + */ + +static int ps3_sys_manager_handle_msg(struct ps3_system_bus_device *dev) +{ + int result; + struct ps3_sys_manager_header header; + + result = ps3_vuart_read(dev, &header, + sizeof(struct ps3_sys_manager_header)); + + if (result) + return result; + + if (header.version != 1) { + dev_dbg(&dev->core, "%s:%d: unsupported header version (%u)\n", + __func__, __LINE__, header.version); + dump_sm_header(&header); + goto fail_header; + } + + BUILD_BUG_ON(sizeof(header) != 16); + + if (header.size != 16 || (header.payload_size != 8 + && header.payload_size != 16)) { + dump_sm_header(&header); + BUG(); + } + + switch (header.service_id) { + case PS3_SM_SERVICE_ID_EXTERN_EVENT: + dev_dbg(&dev->core, "%s:%d: EVENT\n", __func__, __LINE__); + return ps3_sys_manager_handle_event(dev); + case PS3_SM_SERVICE_ID_COMMAND: + dev_dbg(&dev->core, "%s:%d: COMMAND\n", __func__, __LINE__); + return ps3_sys_manager_handle_cmd(dev); + case PS3_SM_SERVICE_ID_REQUEST_ERROR: + dev_dbg(&dev->core, "%s:%d: REQUEST_ERROR\n", __func__, + __LINE__); + dump_sm_header(&header); + break; + default: + dev_dbg(&dev->core, "%s:%d: unknown service_id (%u)\n", + __func__, __LINE__, header.service_id); + break; + } + goto fail_id; + +fail_header: + ps3_vuart_clear_rx_bytes(dev, 0); + return -EIO; +fail_id: + ps3_vuart_clear_rx_bytes(dev, header.payload_size); + return -EIO; +} + +static void ps3_sys_manager_fin(struct ps3_system_bus_device *dev) +{ + ps3_sys_manager_send_request_shutdown(dev); + + pr_emerg("System Halted, OK to turn off power\n"); + + while (ps3_sys_manager_handle_msg(dev)) { + /* pause until next DEC interrupt */ + lv1_pause(0); + } + + while (1) { + /* pause, ignoring DEC interrupt */ + lv1_pause(1); + } +} + +/** + * ps3_sys_manager_final_power_off - The final platform machine_power_off routine. + * + * This routine never returns. The routine disables asynchronous vuart reads + * then spins calling ps3_sys_manager_handle_msg() to receive and acknowledge + * the shutdown command sent from the system manager. Soon after the + * acknowledgement is sent the lpar is destroyed by the HV. This routine + * should only be called from ps3_power_off() through + * ps3_sys_manager_ops.power_off. + */ + +static void ps3_sys_manager_final_power_off(struct ps3_system_bus_device *dev) +{ + BUG_ON(!dev); + + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + ps3_vuart_cancel_async(dev); + + ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_SHUTDOWN, + user_wake_sources); + + ps3_sys_manager_fin(dev); +} + +/** + * ps3_sys_manager_final_restart - The final platform machine_restart routine. + * + * This routine never returns. The routine disables asynchronous vuart reads + * then spins calling ps3_sys_manager_handle_msg() to receive and acknowledge + * the shutdown command sent from the system manager. Soon after the + * acknowledgement is sent the lpar is destroyed by the HV. This routine + * should only be called from ps3_restart() through ps3_sys_manager_ops.restart. + */ + +static void ps3_sys_manager_final_restart(struct ps3_system_bus_device *dev) +{ + BUG_ON(!dev); + + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + /* Check if we got here via a power button event. */ + + if (ps3_sm_force_power_off) { + dev_dbg(&dev->core, "%s:%d: forcing poweroff\n", + __func__, __LINE__); + ps3_sys_manager_final_power_off(dev); + } + + ps3_vuart_cancel_async(dev); + + ps3_sys_manager_send_attr(dev, 0); + ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_REBOOT, + user_wake_sources); + + ps3_sys_manager_fin(dev); +} + +/** + * ps3_sys_manager_get_wol - Get wake-on-lan setting. + */ + +int ps3_sys_manager_get_wol(void) +{ + pr_debug("%s:%d\n", __func__, __LINE__); + + return (user_wake_sources & PS3_SM_WAKE_W_O_L) != 0; +} +EXPORT_SYMBOL_GPL(ps3_sys_manager_get_wol); + +/** + * ps3_sys_manager_set_wol - Set wake-on-lan setting. + */ + +void ps3_sys_manager_set_wol(int state) +{ + static DEFINE_MUTEX(mutex); + + mutex_lock(&mutex); + + pr_debug("%s:%d: %d\n", __func__, __LINE__, state); + + if (state) + user_wake_sources |= PS3_SM_WAKE_W_O_L; + else + user_wake_sources &= ~PS3_SM_WAKE_W_O_L; + mutex_unlock(&mutex); +} +EXPORT_SYMBOL_GPL(ps3_sys_manager_set_wol); + +/** + * ps3_sys_manager_work - Asynchronous read handler. + * + * Signaled when PS3_SM_RX_MSG_LEN_MIN bytes arrive at the vuart port. + */ + +static void ps3_sys_manager_work(struct ps3_system_bus_device *dev) +{ + ps3_sys_manager_handle_msg(dev); + ps3_vuart_read_async(dev, PS3_SM_RX_MSG_LEN_MIN); +} + +static int ps3_sys_manager_probe(struct ps3_system_bus_device *dev) +{ + int result; + struct ps3_sys_manager_ops ops; + + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + ops.power_off = ps3_sys_manager_final_power_off; + ops.restart = ps3_sys_manager_final_restart; + ops.dev = dev; + + /* ps3_sys_manager_register_ops copies ops. */ + + ps3_sys_manager_register_ops(&ops); + + result = ps3_sys_manager_send_attr(dev, PS3_SM_ATTR_ALL); + BUG_ON(result); + + result = ps3_vuart_read_async(dev, PS3_SM_RX_MSG_LEN_MIN); + BUG_ON(result); + + return result; +} + +static int ps3_sys_manager_remove(struct ps3_system_bus_device *dev) +{ + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + return 0; +} + +static void ps3_sys_manager_shutdown(struct ps3_system_bus_device *dev) +{ + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); +} + +static struct ps3_vuart_port_driver ps3_sys_manager = { + .core.match_id = PS3_MATCH_ID_SYSTEM_MANAGER, + .core.core.name = "ps3_sys_manager", + .probe = ps3_sys_manager_probe, + .remove = ps3_sys_manager_remove, + .shutdown = ps3_sys_manager_shutdown, + .work = ps3_sys_manager_work, +}; + +static int __init ps3_sys_manager_init(void) +{ + if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) + return -ENODEV; + + return ps3_vuart_port_driver_register(&ps3_sys_manager); +} + +module_init(ps3_sys_manager_init); +/* Module remove not supported. */ + +MODULE_AUTHOR("Sony Corporation"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("PS3 System Manager"); +MODULE_ALIAS(PS3_MODULE_ALIAS_SYSTEM_MANAGER); diff --git a/drivers/ps3/ps3-vuart.c b/drivers/ps3/ps3-vuart.c new file mode 100644 index 0000000000..6328abd51f --- /dev/null +++ b/drivers/ps3/ps3-vuart.c @@ -0,0 +1,1248 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PS3 virtual uart + * + * Copyright (C) 2006 Sony Computer Entertainment Inc. + * Copyright 2006 Sony Corp. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "vuart.h" + +MODULE_AUTHOR("Sony Corporation"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("PS3 vuart"); + +/** + * vuart - An inter-partition data link service. + * port 0: PS3 AV Settings. + * port 2: PS3 System Manager. + * + * The vuart provides a bi-directional byte stream data link between logical + * partitions. Its primary role is as a communications link between the guest + * OS and the system policy module. The current HV does not support any + * connections other than those listed. + */ + +enum {PORT_COUNT = 3,}; + +enum vuart_param { + PARAM_TX_TRIGGER = 0, + PARAM_RX_TRIGGER = 1, + PARAM_INTERRUPT_MASK = 2, + PARAM_RX_BUF_SIZE = 3, /* read only */ + PARAM_RX_BYTES = 4, /* read only */ + PARAM_TX_BUF_SIZE = 5, /* read only */ + PARAM_TX_BYTES = 6, /* read only */ + PARAM_INTERRUPT_STATUS = 7, /* read only */ +}; + +enum vuart_interrupt_bit { + INTERRUPT_BIT_TX = 0, + INTERRUPT_BIT_RX = 1, + INTERRUPT_BIT_DISCONNECT = 2, +}; + +enum vuart_interrupt_mask { + INTERRUPT_MASK_TX = 1, + INTERRUPT_MASK_RX = 2, + INTERRUPT_MASK_DISCONNECT = 4, +}; + +/** + * struct ps3_vuart_port_priv - private vuart device data. + */ + +struct ps3_vuart_port_priv { + u64 interrupt_mask; + + struct { + spinlock_t lock; + struct list_head head; + } tx_list; + struct { + struct ps3_vuart_work work; + unsigned long bytes_held; + spinlock_t lock; + struct list_head head; + } rx_list; + struct ps3_vuart_stats stats; +}; + +static struct ps3_vuart_port_priv *to_port_priv( + struct ps3_system_bus_device *dev) +{ + BUG_ON(!dev); + BUG_ON(!dev->driver_priv); + return (struct ps3_vuart_port_priv *)dev->driver_priv; +} + +/** + * struct ports_bmp - bitmap indicating ports needing service. + * + * A 256 bit read only bitmap indicating ports needing service. Do not write + * to these bits. Must not cross a page boundary. + */ + +struct ports_bmp { + u64 status; + u64 unused[3]; +} __attribute__((aligned(32))); + +#define dump_ports_bmp(_b) _dump_ports_bmp(_b, __func__, __LINE__) +static void __maybe_unused _dump_ports_bmp( + const struct ports_bmp *bmp, const char *func, int line) +{ + pr_debug("%s:%d: ports_bmp: %016llxh\n", func, line, bmp->status); +} + +#define dump_port_params(_b) _dump_port_params(_b, __func__, __LINE__) +static void __maybe_unused _dump_port_params(unsigned int port_number, + const char *func, int line) +{ +#if defined(DEBUG) + static const char *strings[] = { + "tx_trigger ", + "rx_trigger ", + "interrupt_mask ", + "rx_buf_size ", + "rx_bytes ", + "tx_buf_size ", + "tx_bytes ", + "interrupt_status", + }; + int result; + unsigned int i; + u64 value; + + for (i = 0; i < ARRAY_SIZE(strings); i++) { + result = lv1_get_virtual_uart_param(port_number, i, &value); + + if (result) { + pr_debug("%s:%d: port_%u: %s failed: %s\n", func, line, + port_number, strings[i], ps3_result(result)); + continue; + } + pr_debug("%s:%d: port_%u: %s = %lxh\n", + func, line, port_number, strings[i], value); + } +#endif +} + +int ps3_vuart_get_triggers(struct ps3_system_bus_device *dev, + struct vuart_triggers *trig) +{ + int result; + u64 size; + u64 val; + u64 tx; + + result = lv1_get_virtual_uart_param(dev->port_number, + PARAM_TX_TRIGGER, &tx); + trig->tx = tx; + + if (result) { + dev_dbg(&dev->core, "%s:%d: tx_trigger failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return result; + } + + result = lv1_get_virtual_uart_param(dev->port_number, + PARAM_RX_BUF_SIZE, &size); + + if (result) { + dev_dbg(&dev->core, "%s:%d: tx_buf_size failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return result; + } + + result = lv1_get_virtual_uart_param(dev->port_number, + PARAM_RX_TRIGGER, &val); + + if (result) { + dev_dbg(&dev->core, "%s:%d: rx_trigger failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return result; + } + + trig->rx = size - val; + + dev_dbg(&dev->core, "%s:%d: tx %lxh, rx %lxh\n", __func__, __LINE__, + trig->tx, trig->rx); + + return result; +} + +int ps3_vuart_set_triggers(struct ps3_system_bus_device *dev, unsigned int tx, + unsigned int rx) +{ + int result; + u64 size; + + result = lv1_set_virtual_uart_param(dev->port_number, + PARAM_TX_TRIGGER, tx); + + if (result) { + dev_dbg(&dev->core, "%s:%d: tx_trigger failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return result; + } + + result = lv1_get_virtual_uart_param(dev->port_number, + PARAM_RX_BUF_SIZE, &size); + + if (result) { + dev_dbg(&dev->core, "%s:%d: tx_buf_size failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return result; + } + + result = lv1_set_virtual_uart_param(dev->port_number, + PARAM_RX_TRIGGER, size - rx); + + if (result) { + dev_dbg(&dev->core, "%s:%d: rx_trigger failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return result; + } + + dev_dbg(&dev->core, "%s:%d: tx %xh, rx %xh\n", __func__, __LINE__, + tx, rx); + + return result; +} + +static int ps3_vuart_get_rx_bytes_waiting(struct ps3_system_bus_device *dev, + u64 *bytes_waiting) +{ + int result; + + result = lv1_get_virtual_uart_param(dev->port_number, + PARAM_RX_BYTES, bytes_waiting); + + if (result) + dev_dbg(&dev->core, "%s:%d: rx_bytes failed: %s\n", + __func__, __LINE__, ps3_result(result)); + + dev_dbg(&dev->core, "%s:%d: %llxh\n", __func__, __LINE__, + *bytes_waiting); + return result; +} + +/** + * ps3_vuart_set_interrupt_mask - Enable/disable the port interrupt sources. + * @dev: The struct ps3_system_bus_device instance. + * @bmp: Logical OR of enum vuart_interrupt_mask values. A zero bit disables. + */ + +static int ps3_vuart_set_interrupt_mask(struct ps3_system_bus_device *dev, + unsigned long mask) +{ + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + dev_dbg(&dev->core, "%s:%d: %lxh\n", __func__, __LINE__, mask); + + priv->interrupt_mask = mask; + + result = lv1_set_virtual_uart_param(dev->port_number, + PARAM_INTERRUPT_MASK, priv->interrupt_mask); + + if (result) + dev_dbg(&dev->core, "%s:%d: interrupt_mask failed: %s\n", + __func__, __LINE__, ps3_result(result)); + + return result; +} + +static int ps3_vuart_get_interrupt_status(struct ps3_system_bus_device *dev, + unsigned long *status) +{ + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + u64 tmp; + + result = lv1_get_virtual_uart_param(dev->port_number, + PARAM_INTERRUPT_STATUS, &tmp); + + if (result) + dev_dbg(&dev->core, "%s:%d: interrupt_status failed: %s\n", + __func__, __LINE__, ps3_result(result)); + + *status = tmp & priv->interrupt_mask; + + dev_dbg(&dev->core, "%s:%d: m %llxh, s %llxh, m&s %lxh\n", + __func__, __LINE__, priv->interrupt_mask, tmp, *status); + + return result; +} + +int ps3_vuart_enable_interrupt_tx(struct ps3_system_bus_device *dev) +{ + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + return (priv->interrupt_mask & INTERRUPT_MASK_TX) ? 0 + : ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask + | INTERRUPT_MASK_TX); +} + +int ps3_vuart_enable_interrupt_rx(struct ps3_system_bus_device *dev) +{ + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + return (priv->interrupt_mask & INTERRUPT_MASK_RX) ? 0 + : ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask + | INTERRUPT_MASK_RX); +} + +int ps3_vuart_enable_interrupt_disconnect(struct ps3_system_bus_device *dev) +{ + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + return (priv->interrupt_mask & INTERRUPT_MASK_DISCONNECT) ? 0 + : ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask + | INTERRUPT_MASK_DISCONNECT); +} + +int ps3_vuart_disable_interrupt_tx(struct ps3_system_bus_device *dev) +{ + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + return (priv->interrupt_mask & INTERRUPT_MASK_TX) + ? ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask + & ~INTERRUPT_MASK_TX) : 0; +} + +int ps3_vuart_disable_interrupt_rx(struct ps3_system_bus_device *dev) +{ + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + return (priv->interrupt_mask & INTERRUPT_MASK_RX) + ? ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask + & ~INTERRUPT_MASK_RX) : 0; +} + +int ps3_vuart_disable_interrupt_disconnect(struct ps3_system_bus_device *dev) +{ + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + return (priv->interrupt_mask & INTERRUPT_MASK_DISCONNECT) + ? ps3_vuart_set_interrupt_mask(dev, priv->interrupt_mask + & ~INTERRUPT_MASK_DISCONNECT) : 0; +} + +/** + * ps3_vuart_raw_write - Low level write helper. + * @dev: The struct ps3_system_bus_device instance. + * + * Do not call ps3_vuart_raw_write directly, use ps3_vuart_write. + */ + +static int ps3_vuart_raw_write(struct ps3_system_bus_device *dev, + const void *buf, unsigned int bytes, u64 *bytes_written) +{ + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + result = lv1_write_virtual_uart(dev->port_number, + ps3_mm_phys_to_lpar(__pa(buf)), bytes, bytes_written); + + if (result) { + dev_warn(&dev->core, "%s:%d: lv1_write_virtual_uart failed: " + "%s\n", __func__, __LINE__, ps3_result(result)); + return result; + } + + priv->stats.bytes_written += *bytes_written; + + dev_dbg(&dev->core, "%s:%d: wrote %llxh/%xh=>%lxh\n", __func__, __LINE__, + *bytes_written, bytes, priv->stats.bytes_written); + + return result; +} + +/** + * ps3_vuart_raw_read - Low level read helper. + * @dev: The struct ps3_system_bus_device instance. + * + * Do not call ps3_vuart_raw_read directly, use ps3_vuart_read. + */ + +static int ps3_vuart_raw_read(struct ps3_system_bus_device *dev, void *buf, + unsigned int bytes, u64 *bytes_read) +{ + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + + dev_dbg(&dev->core, "%s:%d: %xh\n", __func__, __LINE__, bytes); + + result = lv1_read_virtual_uart(dev->port_number, + ps3_mm_phys_to_lpar(__pa(buf)), bytes, bytes_read); + + if (result) { + dev_dbg(&dev->core, "%s:%d: lv1_read_virtual_uart failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return result; + } + + priv->stats.bytes_read += *bytes_read; + + dev_dbg(&dev->core, "%s:%d: read %llxh/%xh=>%lxh\n", __func__, __LINE__, + *bytes_read, bytes, priv->stats.bytes_read); + + return result; +} + +/** + * ps3_vuart_clear_rx_bytes - Discard bytes received. + * @dev: The struct ps3_system_bus_device instance. + * @bytes: Max byte count to discard, zero = all pending. + * + * Used to clear pending rx interrupt source. Will not block. + */ + +void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev, + unsigned int bytes) +{ + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + u64 bytes_waiting; + void *tmp; + + result = ps3_vuart_get_rx_bytes_waiting(dev, &bytes_waiting); + + BUG_ON(result); + + bytes = bytes ? min(bytes, (unsigned int)bytes_waiting) : bytes_waiting; + + dev_dbg(&dev->core, "%s:%d: %u\n", __func__, __LINE__, bytes); + + if (!bytes) + return; + + /* Add some extra space for recently arrived data. */ + + bytes += 128; + + tmp = kmalloc(bytes, GFP_KERNEL); + + if (!tmp) + return; + + ps3_vuart_raw_read(dev, tmp, bytes, &bytes_waiting); + + kfree(tmp); + + /* Don't include these bytes in the stats. */ + + priv->stats.bytes_read -= bytes_waiting; +} +EXPORT_SYMBOL_GPL(ps3_vuart_clear_rx_bytes); + +/** + * struct list_buffer - An element for a port device fifo buffer list. + */ + +struct list_buffer { + struct list_head link; + const unsigned char *head; + const unsigned char *tail; + unsigned long dbg_number; + unsigned char data[]; +}; + +/** + * ps3_vuart_write - the entry point for writing data to a port + * @dev: The struct ps3_system_bus_device instance. + * + * If the port is idle on entry as much of the incoming data is written to + * the port as the port will accept. Otherwise a list buffer is created + * and any remaning incoming data is copied to that buffer. The buffer is + * then enqueued for transmision via the transmit interrupt. + */ + +int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf, + unsigned int bytes) +{ + static unsigned long dbg_number; + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + unsigned long flags; + struct list_buffer *lb; + + dev_dbg(&dev->core, "%s:%d: %u(%xh) bytes\n", __func__, __LINE__, + bytes, bytes); + + spin_lock_irqsave(&priv->tx_list.lock, flags); + + if (list_empty(&priv->tx_list.head)) { + u64 bytes_written; + + result = ps3_vuart_raw_write(dev, buf, bytes, &bytes_written); + + spin_unlock_irqrestore(&priv->tx_list.lock, flags); + + if (result) { + dev_dbg(&dev->core, + "%s:%d: ps3_vuart_raw_write failed\n", + __func__, __LINE__); + return result; + } + + if (bytes_written == bytes) { + dev_dbg(&dev->core, "%s:%d: wrote %xh bytes\n", + __func__, __LINE__, bytes); + return 0; + } + + bytes -= bytes_written; + buf += bytes_written; + } else + spin_unlock_irqrestore(&priv->tx_list.lock, flags); + + lb = kmalloc(sizeof(struct list_buffer) + bytes, GFP_KERNEL); + + if (!lb) + return -ENOMEM; + + memcpy(lb->data, buf, bytes); + lb->head = lb->data; + lb->tail = lb->data + bytes; + lb->dbg_number = ++dbg_number; + + spin_lock_irqsave(&priv->tx_list.lock, flags); + list_add_tail(&lb->link, &priv->tx_list.head); + ps3_vuart_enable_interrupt_tx(dev); + spin_unlock_irqrestore(&priv->tx_list.lock, flags); + + dev_dbg(&dev->core, "%s:%d: queued buf_%lu, %xh bytes\n", + __func__, __LINE__, lb->dbg_number, bytes); + + return 0; +} +EXPORT_SYMBOL_GPL(ps3_vuart_write); + +/** + * ps3_vuart_queue_rx_bytes - Queue waiting bytes into the buffer list. + * @dev: The struct ps3_system_bus_device instance. + * @bytes_queued: Number of bytes queued to the buffer list. + * + * Must be called with priv->rx_list.lock held. + */ + +static int ps3_vuart_queue_rx_bytes(struct ps3_system_bus_device *dev, + u64 *bytes_queued) +{ + static unsigned long dbg_number; + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + struct list_buffer *lb; + u64 bytes; + + *bytes_queued = 0; + + result = ps3_vuart_get_rx_bytes_waiting(dev, &bytes); + BUG_ON(result); + + if (result) + return -EIO; + + if (!bytes) + return 0; + + /* Add some extra space for recently arrived data. */ + + bytes += 128; + + lb = kmalloc(sizeof(struct list_buffer) + bytes, GFP_ATOMIC); + + if (!lb) + return -ENOMEM; + + ps3_vuart_raw_read(dev, lb->data, bytes, &bytes); + + lb->head = lb->data; + lb->tail = lb->data + bytes; + lb->dbg_number = ++dbg_number; + + list_add_tail(&lb->link, &priv->rx_list.head); + priv->rx_list.bytes_held += bytes; + + dev_dbg(&dev->core, "%s:%d: buf_%lu: queued %llxh bytes\n", + __func__, __LINE__, lb->dbg_number, bytes); + + *bytes_queued = bytes; + + return 0; +} + +/** + * ps3_vuart_read - The entry point for reading data from a port. + * + * Queue data waiting at the port, and if enough bytes to satisfy the request + * are held in the buffer list those bytes are dequeued and copied to the + * caller's buffer. Emptied list buffers are retiered. If the request cannot + * be statified by bytes held in the list buffers -EAGAIN is returned. + */ + +int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf, + unsigned int bytes) +{ + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + unsigned long flags; + struct list_buffer *lb, *n; + unsigned long bytes_read; + + dev_dbg(&dev->core, "%s:%d: %u(%xh) bytes\n", __func__, __LINE__, + bytes, bytes); + + spin_lock_irqsave(&priv->rx_list.lock, flags); + + /* Queue rx bytes here for polled reads. */ + + while (priv->rx_list.bytes_held < bytes) { + u64 tmp; + + result = ps3_vuart_queue_rx_bytes(dev, &tmp); + if (result || !tmp) { + dev_dbg(&dev->core, "%s:%d: starved for %lxh bytes\n", + __func__, __LINE__, + bytes - priv->rx_list.bytes_held); + spin_unlock_irqrestore(&priv->rx_list.lock, flags); + return -EAGAIN; + } + } + + list_for_each_entry_safe(lb, n, &priv->rx_list.head, link) { + bytes_read = min((unsigned int)(lb->tail - lb->head), bytes); + + memcpy(buf, lb->head, bytes_read); + buf += bytes_read; + bytes -= bytes_read; + priv->rx_list.bytes_held -= bytes_read; + + if (bytes_read < lb->tail - lb->head) { + lb->head += bytes_read; + dev_dbg(&dev->core, "%s:%d: buf_%lu: dequeued %lxh " + "bytes\n", __func__, __LINE__, lb->dbg_number, + bytes_read); + spin_unlock_irqrestore(&priv->rx_list.lock, flags); + return 0; + } + + dev_dbg(&dev->core, "%s:%d: buf_%lu: free, dequeued %lxh " + "bytes\n", __func__, __LINE__, lb->dbg_number, + bytes_read); + + list_del(&lb->link); + kfree(lb); + } + + spin_unlock_irqrestore(&priv->rx_list.lock, flags); + return 0; +} +EXPORT_SYMBOL_GPL(ps3_vuart_read); + +/** + * ps3_vuart_work - Asynchronous read handler. + */ + +static void ps3_vuart_work(struct work_struct *work) +{ + struct ps3_system_bus_device *dev = + ps3_vuart_work_to_system_bus_dev(work); + struct ps3_vuart_port_driver *drv = + ps3_system_bus_dev_to_vuart_drv(dev); + + BUG_ON(!drv); + drv->work(dev); +} + +int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes) +{ + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + unsigned long flags; + + if (priv->rx_list.work.trigger) { + dev_dbg(&dev->core, "%s:%d: warning, multiple calls\n", + __func__, __LINE__); + return -EAGAIN; + } + + BUG_ON(!bytes); + + spin_lock_irqsave(&priv->rx_list.lock, flags); + if (priv->rx_list.bytes_held >= bytes) { + dev_dbg(&dev->core, "%s:%d: schedule_work %xh bytes\n", + __func__, __LINE__, bytes); + schedule_work(&priv->rx_list.work.work); + spin_unlock_irqrestore(&priv->rx_list.lock, flags); + return 0; + } + + priv->rx_list.work.trigger = bytes; + spin_unlock_irqrestore(&priv->rx_list.lock, flags); + + dev_dbg(&dev->core, "%s:%d: waiting for %u(%xh) bytes\n", __func__, + __LINE__, bytes, bytes); + + return 0; +} +EXPORT_SYMBOL_GPL(ps3_vuart_read_async); + +void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev) +{ + to_port_priv(dev)->rx_list.work.trigger = 0; +} +EXPORT_SYMBOL_GPL(ps3_vuart_cancel_async); + +/** + * ps3_vuart_handle_interrupt_tx - third stage transmit interrupt handler + * + * Services the transmit interrupt for the port. Writes as much data from the + * buffer list as the port will accept. Retires any emptied list buffers and + * adjusts the final list buffer state for a partial write. + */ + +static int ps3_vuart_handle_interrupt_tx(struct ps3_system_bus_device *dev) +{ + int result = 0; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + unsigned long flags; + struct list_buffer *lb, *n; + unsigned long bytes_total = 0; + + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + spin_lock_irqsave(&priv->tx_list.lock, flags); + + list_for_each_entry_safe(lb, n, &priv->tx_list.head, link) { + + u64 bytes_written; + + result = ps3_vuart_raw_write(dev, lb->head, lb->tail - lb->head, + &bytes_written); + + if (result) { + dev_dbg(&dev->core, + "%s:%d: ps3_vuart_raw_write failed\n", + __func__, __LINE__); + break; + } + + bytes_total += bytes_written; + + if (bytes_written < lb->tail - lb->head) { + lb->head += bytes_written; + dev_dbg(&dev->core, + "%s:%d cleared buf_%lu, %llxh bytes\n", + __func__, __LINE__, lb->dbg_number, + bytes_written); + goto port_full; + } + + dev_dbg(&dev->core, "%s:%d free buf_%lu\n", __func__, __LINE__, + lb->dbg_number); + + list_del(&lb->link); + kfree(lb); + } + + ps3_vuart_disable_interrupt_tx(dev); +port_full: + spin_unlock_irqrestore(&priv->tx_list.lock, flags); + dev_dbg(&dev->core, "%s:%d wrote %lxh bytes total\n", + __func__, __LINE__, bytes_total); + return result; +} + +/** + * ps3_vuart_handle_interrupt_rx - third stage receive interrupt handler + * + * Services the receive interrupt for the port. Creates a list buffer and + * copies all waiting port data to that buffer and enqueues the buffer in the + * buffer list. Buffer list data is dequeued via ps3_vuart_read. + */ + +static int ps3_vuart_handle_interrupt_rx(struct ps3_system_bus_device *dev) +{ + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + unsigned long flags; + u64 bytes; + + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + spin_lock_irqsave(&priv->rx_list.lock, flags); + result = ps3_vuart_queue_rx_bytes(dev, &bytes); + + if (result) { + spin_unlock_irqrestore(&priv->rx_list.lock, flags); + return result; + } + + if (priv->rx_list.work.trigger && priv->rx_list.bytes_held + >= priv->rx_list.work.trigger) { + dev_dbg(&dev->core, "%s:%d: schedule_work %lxh bytes\n", + __func__, __LINE__, priv->rx_list.work.trigger); + priv->rx_list.work.trigger = 0; + schedule_work(&priv->rx_list.work.work); + } + + spin_unlock_irqrestore(&priv->rx_list.lock, flags); + return result; +} + +static int ps3_vuart_handle_interrupt_disconnect( + struct ps3_system_bus_device *dev) +{ + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + BUG_ON("no support"); + return -1; +} + +/** + * ps3_vuart_handle_port_interrupt - second stage interrupt handler + * + * Services any pending interrupt types for the port. Passes control to the + * third stage type specific interrupt handler. Returns control to the first + * stage handler after one iteration. + */ + +static int ps3_vuart_handle_port_interrupt(struct ps3_system_bus_device *dev) +{ + int result; + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + unsigned long status; + + result = ps3_vuart_get_interrupt_status(dev, &status); + + if (result) + return result; + + dev_dbg(&dev->core, "%s:%d: status: %lxh\n", __func__, __LINE__, + status); + + if (status & INTERRUPT_MASK_DISCONNECT) { + priv->stats.disconnect_interrupts++; + result = ps3_vuart_handle_interrupt_disconnect(dev); + if (result) + ps3_vuart_disable_interrupt_disconnect(dev); + } + + if (status & INTERRUPT_MASK_TX) { + priv->stats.tx_interrupts++; + result = ps3_vuart_handle_interrupt_tx(dev); + if (result) + ps3_vuart_disable_interrupt_tx(dev); + } + + if (status & INTERRUPT_MASK_RX) { + priv->stats.rx_interrupts++; + result = ps3_vuart_handle_interrupt_rx(dev); + if (result) + ps3_vuart_disable_interrupt_rx(dev); + } + + return 0; +} + +static struct vuart_bus_priv { + struct ports_bmp *bmp; + unsigned int virq; + struct mutex probe_mutex; + int use_count; + struct ps3_system_bus_device *devices[PORT_COUNT]; +} vuart_bus_priv; + +/** + * ps3_vuart_irq_handler - first stage interrupt handler + * + * Loops finding any interrupting port and its associated instance data. + * Passes control to the second stage port specific interrupt handler. Loops + * until all outstanding interrupts are serviced. + */ + +static irqreturn_t ps3_vuart_irq_handler(int irq, void *_private) +{ + struct vuart_bus_priv *bus_priv = _private; + + BUG_ON(!bus_priv); + + while (1) { + unsigned int port; + + dump_ports_bmp(bus_priv->bmp); + + port = (BITS_PER_LONG - 1) - __ilog2(bus_priv->bmp->status); + + if (port == BITS_PER_LONG) + break; + + BUG_ON(port >= PORT_COUNT); + BUG_ON(!bus_priv->devices[port]); + + ps3_vuart_handle_port_interrupt(bus_priv->devices[port]); + } + + return IRQ_HANDLED; +} + +static int ps3_vuart_bus_interrupt_get(void) +{ + int result; + + pr_debug(" -> %s:%d\n", __func__, __LINE__); + + vuart_bus_priv.use_count++; + + BUG_ON(vuart_bus_priv.use_count > 2); + + if (vuart_bus_priv.use_count != 1) + return 0; + + BUG_ON(vuart_bus_priv.bmp); + + vuart_bus_priv.bmp = kzalloc(sizeof(struct ports_bmp), GFP_KERNEL); + + if (!vuart_bus_priv.bmp) { + result = -ENOMEM; + goto fail_bmp_malloc; + } + + result = ps3_vuart_irq_setup(PS3_BINDING_CPU_ANY, vuart_bus_priv.bmp, + &vuart_bus_priv.virq); + + if (result) { + pr_debug("%s:%d: ps3_vuart_irq_setup failed (%d)\n", + __func__, __LINE__, result); + result = -EPERM; + goto fail_alloc_irq; + } + + result = request_irq(vuart_bus_priv.virq, ps3_vuart_irq_handler, + 0, "vuart", &vuart_bus_priv); + + if (result) { + pr_debug("%s:%d: request_irq failed (%d)\n", + __func__, __LINE__, result); + goto fail_request_irq; + } + + pr_debug(" <- %s:%d: ok\n", __func__, __LINE__); + return result; + +fail_request_irq: + ps3_vuart_irq_destroy(vuart_bus_priv.virq); + vuart_bus_priv.virq = 0; +fail_alloc_irq: + kfree(vuart_bus_priv.bmp); + vuart_bus_priv.bmp = NULL; +fail_bmp_malloc: + vuart_bus_priv.use_count--; + pr_debug(" <- %s:%d: failed\n", __func__, __LINE__); + return result; +} + +static int ps3_vuart_bus_interrupt_put(void) +{ + pr_debug(" -> %s:%d\n", __func__, __LINE__); + + vuart_bus_priv.use_count--; + + BUG_ON(vuart_bus_priv.use_count < 0); + + if (vuart_bus_priv.use_count != 0) + return 0; + + free_irq(vuart_bus_priv.virq, &vuart_bus_priv); + + ps3_vuart_irq_destroy(vuart_bus_priv.virq); + vuart_bus_priv.virq = 0; + + kfree(vuart_bus_priv.bmp); + vuart_bus_priv.bmp = NULL; + + pr_debug(" <- %s:%d\n", __func__, __LINE__); + return 0; +} + +static int ps3_vuart_probe(struct ps3_system_bus_device *dev) +{ + int result; + struct ps3_vuart_port_driver *drv; + struct ps3_vuart_port_priv *priv = NULL; + + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + drv = ps3_system_bus_dev_to_vuart_drv(dev); + BUG_ON(!drv); + + dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__, + drv->core.core.name); + + if (dev->port_number >= PORT_COUNT) { + BUG(); + return -EINVAL; + } + + mutex_lock(&vuart_bus_priv.probe_mutex); + + result = ps3_vuart_bus_interrupt_get(); + + if (result) + goto fail_setup_interrupt; + + if (vuart_bus_priv.devices[dev->port_number]) { + dev_dbg(&dev->core, "%s:%d: port busy (%d)\n", __func__, + __LINE__, dev->port_number); + result = -EBUSY; + goto fail_busy; + } + + vuart_bus_priv.devices[dev->port_number] = dev; + + /* Setup dev->driver_priv. */ + + dev->driver_priv = kzalloc(sizeof(struct ps3_vuart_port_priv), + GFP_KERNEL); + + if (!dev->driver_priv) { + result = -ENOMEM; + goto fail_dev_malloc; + } + + priv = to_port_priv(dev); + + INIT_LIST_HEAD(&priv->tx_list.head); + spin_lock_init(&priv->tx_list.lock); + + INIT_LIST_HEAD(&priv->rx_list.head); + spin_lock_init(&priv->rx_list.lock); + + INIT_WORK(&priv->rx_list.work.work, ps3_vuart_work); + priv->rx_list.work.trigger = 0; + priv->rx_list.work.dev = dev; + + /* clear stale pending interrupts */ + + ps3_vuart_clear_rx_bytes(dev, 0); + + ps3_vuart_set_interrupt_mask(dev, INTERRUPT_MASK_RX); + + ps3_vuart_set_triggers(dev, 1, 1); + + if (drv->probe) + result = drv->probe(dev); + else { + result = 0; + dev_info(&dev->core, "%s:%d: no probe method\n", __func__, + __LINE__); + } + + if (result) { + dev_dbg(&dev->core, "%s:%d: drv->probe failed\n", + __func__, __LINE__); + goto fail_probe; + } + + mutex_unlock(&vuart_bus_priv.probe_mutex); + + return result; + +fail_probe: + ps3_vuart_set_interrupt_mask(dev, 0); + kfree(dev->driver_priv); + dev->driver_priv = NULL; +fail_dev_malloc: + vuart_bus_priv.devices[dev->port_number] = NULL; +fail_busy: + ps3_vuart_bus_interrupt_put(); +fail_setup_interrupt: + mutex_unlock(&vuart_bus_priv.probe_mutex); + dev_dbg(&dev->core, "%s:%d: failed\n", __func__, __LINE__); + return result; +} + +/** + * ps3_vuart_cleanup - common cleanup helper. + * @dev: The struct ps3_system_bus_device instance. + * + * Cleans interrupts and HV resources. Must be called with + * vuart_bus_priv.probe_mutex held. Used by ps3_vuart_remove and + * ps3_vuart_shutdown. After this call, polled reading will still work. + */ + +static int ps3_vuart_cleanup(struct ps3_system_bus_device *dev) +{ + dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); + + ps3_vuart_cancel_async(dev); + ps3_vuart_set_interrupt_mask(dev, 0); + ps3_vuart_bus_interrupt_put(); + return 0; +} + +/** + * ps3_vuart_remove - Completely clean the device instance. + * @dev: The struct ps3_system_bus_device instance. + * + * Cleans all memory, interrupts and HV resources. After this call the + * device can no longer be used. + */ + +static void ps3_vuart_remove(struct ps3_system_bus_device *dev) +{ + struct ps3_vuart_port_priv *priv = to_port_priv(dev); + struct ps3_vuart_port_driver *drv; + + BUG_ON(!dev); + + mutex_lock(&vuart_bus_priv.probe_mutex); + + dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, + dev->match_id); + + if (!dev->core.driver) { + dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, + __LINE__); + mutex_unlock(&vuart_bus_priv.probe_mutex); + return; + } + + drv = ps3_system_bus_dev_to_vuart_drv(dev); + + BUG_ON(!drv); + + if (drv->remove) { + drv->remove(dev); + } else { + dev_dbg(&dev->core, "%s:%d: no remove method\n", __func__, + __LINE__); + BUG(); + } + + ps3_vuart_cleanup(dev); + + vuart_bus_priv.devices[dev->port_number] = NULL; + kfree(priv); + priv = NULL; + + dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); + mutex_unlock(&vuart_bus_priv.probe_mutex); +} + +/** + * ps3_vuart_shutdown - Cleans interrupts and HV resources. + * @dev: The struct ps3_system_bus_device instance. + * + * Cleans interrupts and HV resources. After this call the + * device can still be used in polling mode. This behavior required + * by sys-manager to be able to complete the device power operation + * sequence. + */ + +static void ps3_vuart_shutdown(struct ps3_system_bus_device *dev) +{ + struct ps3_vuart_port_driver *drv; + + BUG_ON(!dev); + + mutex_lock(&vuart_bus_priv.probe_mutex); + + dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__, + dev->match_id); + + if (!dev->core.driver) { + dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__, + __LINE__); + mutex_unlock(&vuart_bus_priv.probe_mutex); + return; + } + + drv = ps3_system_bus_dev_to_vuart_drv(dev); + + BUG_ON(!drv); + + if (drv->shutdown) + drv->shutdown(dev); + else if (drv->remove) { + dev_dbg(&dev->core, "%s:%d: no shutdown, calling remove\n", + __func__, __LINE__); + drv->remove(dev); + } else { + dev_dbg(&dev->core, "%s:%d: no shutdown method\n", __func__, + __LINE__); + BUG(); + } + + ps3_vuart_cleanup(dev); + + dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); + + mutex_unlock(&vuart_bus_priv.probe_mutex); +} + +static int __init ps3_vuart_bus_init(void) +{ + pr_debug("%s:%d:\n", __func__, __LINE__); + + if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) + return -ENODEV; + + mutex_init(&vuart_bus_priv.probe_mutex); + + return 0; +} + +static void __exit ps3_vuart_bus_exit(void) +{ + pr_debug("%s:%d:\n", __func__, __LINE__); +} + +core_initcall(ps3_vuart_bus_init); +module_exit(ps3_vuart_bus_exit); + +/** + * ps3_vuart_port_driver_register - Add a vuart port device driver. + */ + +int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv) +{ + int result; + + pr_debug("%s:%d: (%s)\n", __func__, __LINE__, drv->core.core.name); + + BUG_ON(!drv->core.match_id); + BUG_ON(!drv->core.core.name); + + drv->core.probe = ps3_vuart_probe; + drv->core.remove = ps3_vuart_remove; + drv->core.shutdown = ps3_vuart_shutdown; + + result = ps3_system_bus_driver_register(&drv->core); + return result; +} +EXPORT_SYMBOL_GPL(ps3_vuart_port_driver_register); + +/** + * ps3_vuart_port_driver_unregister - Remove a vuart port device driver. + */ + +void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv) +{ + pr_debug("%s:%d: (%s)\n", __func__, __LINE__, drv->core.core.name); + ps3_system_bus_driver_unregister(&drv->core); +} +EXPORT_SYMBOL_GPL(ps3_vuart_port_driver_unregister); diff --git a/drivers/ps3/ps3av.c b/drivers/ps3/ps3av.c new file mode 100644 index 0000000000..f6c9e56bdb --- /dev/null +++ b/drivers/ps3/ps3av.c @@ -0,0 +1,1062 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PS3 AV backend support. + * + * Copyright (C) 2007 Sony Computer Entertainment Inc. + * Copyright 2007 Sony Corp. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include