| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Suzuki K. Poulose | 538 | 59.71% | 17 | 68.00% |
| Mathieu J. Poirier | 363 | 40.29% | 8 | 32.00% |
| Total | 901 | 25 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright(C) 2015 Linaro Limited. All rights reserved. * Author: Mathieu Poirier <mathieu.poirier@linaro.org> */ #ifndef _CORESIGHT_TMC_H #define _CORESIGHT_TMC_H #include <linux/dma-mapping.h> #include <linux/miscdevice.h> #define TMC_RSZ 0x004 #define TMC_STS 0x00c #define TMC_RRD 0x010 #define TMC_RRP 0x014 #define TMC_RWP 0x018 #define TMC_TRG 0x01c #define TMC_CTL 0x020 #define TMC_RWD 0x024 #define TMC_MODE 0x028 #define TMC_LBUFLEVEL 0x02c #define TMC_CBUFLEVEL 0x030 #define TMC_BUFWM 0x034 #define TMC_RRPHI 0x038 #define TMC_RWPHI 0x03c #define TMC_AXICTL 0x110 #define TMC_DBALO 0x118 #define TMC_DBAHI 0x11c #define TMC_FFSR 0x300 #define TMC_FFCR 0x304 #define TMC_PSCR 0x308 #define TMC_ITMISCOP0 0xee0 #define TMC_ITTRFLIN 0xee8 #define TMC_ITATBDATA0 0xeec #define TMC_ITATBCTR2 0xef0 #define TMC_ITATBCTR1 0xef4 #define TMC_ITATBCTR0 0xef8 /* register description */ /* TMC_CTL - 0x020 */ #define TMC_CTL_CAPT_EN BIT(0) /* TMC_STS - 0x00C */ #define TMC_STS_TMCREADY_BIT 2 #define TMC_STS_FULL BIT(0) #define TMC_STS_TRIGGERED BIT(1) /* * TMC_AXICTL - 0x110 * * TMC AXICTL format for SoC-400 * Bits [0-1] : ProtCtrlBit0-1 * Bits [2-5] : CacheCtrlBits 0-3 (AXCACHE) * Bit 6 : Reserved * Bit 7 : ScatterGatherMode * Bits [8-11] : WrBurstLen * Bits [12-31] : Reserved. * TMC AXICTL format for SoC-600, as above except: * Bits [2-5] : AXI WCACHE * Bits [16-19] : AXI RCACHE * Bits [20-31] : Reserved */ #define TMC_AXICTL_CLEAR_MASK 0xfbf #define TMC_AXICTL_ARCACHE_MASK (0xf << 16) #define TMC_AXICTL_PROT_CTL_B0 BIT(0) #define TMC_AXICTL_PROT_CTL_B1 BIT(1) #define TMC_AXICTL_SCT_GAT_MODE BIT(7) #define TMC_AXICTL_WR_BURST_16 0xF00 /* Write-back Read and Write-allocate */ #define TMC_AXICTL_AXCACHE_OS (0xf << 2) #define TMC_AXICTL_ARCACHE_OS (0xf << 16) /* TMC_FFCR - 0x304 */ #define TMC_FFCR_FLUSHMAN_BIT 6 #define TMC_FFCR_EN_FMT BIT(0) #define TMC_FFCR_EN_TI BIT(1) #define TMC_FFCR_FON_FLIN BIT(4) #define TMC_FFCR_FON_TRIG_EVT BIT(5) #define TMC_FFCR_TRIGON_TRIGIN BIT(8) #define TMC_FFCR_STOP_ON_FLUSH BIT(12) #define TMC_DEVID_NOSCAT BIT(24) #define TMC_DEVID_AXIAW_VALID BIT(16) #define TMC_DEVID_AXIAW_SHIFT 17 #define TMC_DEVID_AXIAW_MASK 0x7f enum tmc_config_type { TMC_CONFIG_TYPE_ETB, TMC_CONFIG_TYPE_ETR, TMC_CONFIG_TYPE_ETF, }; enum tmc_mode { TMC_MODE_CIRCULAR_BUFFER, TMC_MODE_SOFTWARE_FIFO, TMC_MODE_HARDWARE_FIFO, }; enum tmc_mem_intf_width { TMC_MEM_INTF_WIDTH_32BITS = 1, TMC_MEM_INTF_WIDTH_64BITS = 2, TMC_MEM_INTF_WIDTH_128BITS = 4, TMC_MEM_INTF_WIDTH_256BITS = 8, }; /* TMC ETR Capability bit definitions */ #define TMC_ETR_SG (0x1U << 0) /* ETR has separate read/write cache encodings */ #define TMC_ETR_AXI_ARCACHE (0x1U << 1) /* * TMC_ETR_SAVE_RESTORE - Values of RRP/RWP/STS.Full are * retained when TMC leaves Disabled state, allowing us to continue * the tracing from a point where we stopped. This also implies that * the RRP/RWP/STS.Full should always be programmed to the correct * value. Unfortunately this is not advertised by the hardware, * so we have to rely on PID of the IP to detect the functionality. */ #define TMC_ETR_SAVE_RESTORE (0x1U << 2) /* Coresight SoC-600 TMC-ETR unadvertised capabilities */ #define CORESIGHT_SOC_600_ETR_CAPS \ (TMC_ETR_SAVE_RESTORE | TMC_ETR_AXI_ARCACHE) enum etr_mode { ETR_MODE_FLAT, /* Uses contiguous flat buffer */ ETR_MODE_ETR_SG, /* Uses in-built TMC ETR SG mechanism */ ETR_MODE_CATU, /* Use SG mechanism in CATU */ }; struct etr_buf_operations; /** * struct etr_buf - Details of the buffer used by ETR * @mode : Mode of the ETR buffer, contiguous, Scatter Gather etc. * @full : Trace data overflow * @size : Size of the buffer. * @hwaddr : Address to be programmed in the TMC:DBA{LO,HI} * @offset : Offset of the trace data in the buffer for consumption. * @len : Available trace data @buf (may round up to the beginning). * @ops : ETR buffer operations for the mode. * @private : Backend specific information for the buf */ struct etr_buf { enum etr_mode mode; bool full; ssize_t size; dma_addr_t hwaddr; unsigned long offset; s64 len; const struct etr_buf_operations *ops; void *private; }; /** * struct tmc_drvdata - specifics associated to an TMC component * @base: memory mapped base address for this component. * @dev: the device entity associated to this component. * @csdev: component vitals needed by the framework. * @miscdev: specifics to handle "/dev/xyz.tmc" entry. * @spinlock: only one at a time pls. * @buf: Snapshot of the trace data for ETF/ETB. * @etr_buf: details of buffer used in TMC-ETR * @len: size of the available trace for ETF/ETB. * @size: trace buffer size for this TMC (common for all modes). * @mode: how this TMC is being used. * @config_type: TMC variant, must be of type @tmc_config_type. * @memwidth: width of the memory interface databus, in bytes. * @trigger_cntr: amount of words to store after a trigger. * @etr_caps: Bitmask of capabilities of the TMC ETR, inferred from the * device configuration register (DEVID) * @perf_data: PERF buffer for ETR. * @sysfs_data: SYSFS buffer for ETR. */ struct tmc_drvdata { void __iomem *base; struct device *dev; struct coresight_device *csdev; struct miscdevice miscdev; spinlock_t spinlock; bool reading; union { char *buf; /* TMC ETB */ struct etr_buf *etr_buf; /* TMC ETR */ }; u32 len; u32 size; u32 mode; enum tmc_config_type config_type; enum tmc_mem_intf_width memwidth; u32 trigger_cntr; u32 etr_caps; struct etr_buf *sysfs_buf; void *perf_data; }; struct etr_buf_operations { int (*alloc)(struct tmc_drvdata *drvdata, struct etr_buf *etr_buf, int node, void **pages); void (*sync)(struct etr_buf *etr_buf, u64 rrp, u64 rwp); ssize_t (*get_data)(struct etr_buf *etr_buf, u64 offset, size_t len, char **bufpp); void (*free)(struct etr_buf *etr_buf); }; /** * struct tmc_pages - Collection of pages used for SG. * @nr_pages: Number of pages in the list. * @daddrs: Array of DMA'able page address. * @pages: Array pages for the buffer. */ struct tmc_pages { int nr_pages; dma_addr_t *daddrs; struct page **pages; }; /* * struct tmc_sg_table - Generic SG table for TMC * @dev: Device for DMA allocations * @table_vaddr: Contiguous Virtual address for PageTable * @data_vaddr: Contiguous Virtual address for Data Buffer * @table_daddr: DMA address of the PageTable base * @node: Node for Page allocations * @table_pages: List of pages & dma address for Table * @data_pages: List of pages & dma address for Data */ struct tmc_sg_table { struct device *dev; void *table_vaddr; void *data_vaddr; dma_addr_t table_daddr; int node; struct tmc_pages table_pages; struct tmc_pages data_pages; }; /* Generic functions */ void tmc_wait_for_tmcready(struct tmc_drvdata *drvdata); void tmc_flush_and_stop(struct tmc_drvdata *drvdata); void tmc_enable_hw(struct tmc_drvdata *drvdata); void tmc_disable_hw(struct tmc_drvdata *drvdata); /* ETB/ETF functions */ int tmc_read_prepare_etb(struct tmc_drvdata *drvdata); int tmc_read_unprepare_etb(struct tmc_drvdata *drvdata); extern const struct coresight_ops tmc_etb_cs_ops; extern const struct coresight_ops tmc_etf_cs_ops; ssize_t tmc_etb_get_sysfs_trace(struct tmc_drvdata *drvdata, loff_t pos, size_t len, char **bufpp); /* ETR functions */ int tmc_read_prepare_etr(struct tmc_drvdata *drvdata); int tmc_read_unprepare_etr(struct tmc_drvdata *drvdata); extern const struct coresight_ops tmc_etr_cs_ops; ssize_t tmc_etr_get_sysfs_trace(struct tmc_drvdata *drvdata, loff_t pos, size_t len, char **bufpp); #define TMC_REG_PAIR(name, lo_off, hi_off) \ static inline u64 \ tmc_read_##name(struct tmc_drvdata *drvdata) \ { \ return coresight_read_reg_pair(drvdata->base, lo_off, hi_off); \ } \ static inline void \ tmc_write_##name(struct tmc_drvdata *drvdata, u64 val) \ { \ coresight_write_reg_pair(drvdata->base, val, lo_off, hi_off); \ } TMC_REG_PAIR(rrp, TMC_RRP, TMC_RRPHI) TMC_REG_PAIR(rwp, TMC_RWP, TMC_RWPHI) TMC_REG_PAIR(dba, TMC_DBALO, TMC_DBAHI) /* Initialise the caps from unadvertised static capabilities of the device */ static inline void tmc_etr_init_caps(struct tmc_drvdata *drvdata, u32 dev_caps) { WARN_ON(drvdata->etr_caps); drvdata->etr_caps = dev_caps; } static inline void tmc_etr_set_cap(struct tmc_drvdata *drvdata, u32 cap) { drvdata->etr_caps |= cap; } static inline bool tmc_etr_has_cap(struct tmc_drvdata *drvdata, u32 cap) { return !!(drvdata->etr_caps & cap); } struct tmc_sg_table *tmc_alloc_sg_table(struct device *dev, int node, int nr_tpages, int nr_dpages, void **pages); void tmc_free_sg_table(struct tmc_sg_table *sg_table); void tmc_sg_table_sync_table(struct tmc_sg_table *sg_table); void tmc_sg_table_sync_data_range(struct tmc_sg_table *table, u64 offset, u64 size); ssize_t tmc_sg_table_get_data(struct tmc_sg_table *sg_table, u64 offset, size_t len, char **bufpp); static inline unsigned long tmc_sg_table_buf_size(struct tmc_sg_table *sg_table) { return sg_table->data_pages.nr_pages << PAGE_SHIFT; } struct coresight_device *tmc_etr_get_catu_device(struct tmc_drvdata *drvdata); #endif
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