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![Benjamin Herrenschmidt](/assets/img/avatar_default.png)
The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which is currently unused on OpenPower systems. This adds an alternative to the fsi-master-gpio driver that uses that coprocessor instead of bit banging from the ARM core itself. The end result is about 4 times faster. The firmware for the coprocessor and its source code can be found at https://github.com/ozbenh/cf-fsi and is system specific. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
150 lines
3.7 KiB
C
150 lines
3.7 KiB
C
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM fsi_master_ast_cf
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#if !defined(_TRACE_FSI_MASTER_ACF_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_FSI_MASTER_ACF_H
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#include <linux/tracepoint.h>
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TRACE_EVENT(fsi_master_acf_copro_command,
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TP_PROTO(const struct fsi_master_acf *master, uint32_t op),
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TP_ARGS(master, op),
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TP_STRUCT__entry(
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__field(int, master_idx)
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__field(uint32_t, op)
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),
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TP_fast_assign(
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__entry->master_idx = master->master.idx;
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__entry->op = op;
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),
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TP_printk("fsi-acf%d command %08x",
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__entry->master_idx, __entry->op
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)
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);
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TRACE_EVENT(fsi_master_acf_send_request,
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TP_PROTO(const struct fsi_master_acf *master, const struct fsi_msg *cmd, u8 rbits),
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TP_ARGS(master, cmd, rbits),
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TP_STRUCT__entry(
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__field(int, master_idx)
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__field(uint64_t, msg)
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__field(u8, bits)
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__field(u8, rbits)
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),
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TP_fast_assign(
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__entry->master_idx = master->master.idx;
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__entry->msg = cmd->msg;
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__entry->bits = cmd->bits;
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__entry->rbits = rbits;
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),
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TP_printk("fsi-acf%d cmd: %016llx/%d/%d",
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__entry->master_idx, (unsigned long long)__entry->msg,
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__entry->bits, __entry->rbits
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)
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);
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TRACE_EVENT(fsi_master_acf_copro_response,
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TP_PROTO(const struct fsi_master_acf *master, u8 rtag, u8 rcrc, __be32 rdata, bool crc_ok),
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TP_ARGS(master, rtag, rcrc, rdata, crc_ok),
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TP_STRUCT__entry(
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__field(int, master_idx)
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__field(u8, rtag)
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__field(u8, rcrc)
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__field(u32, rdata)
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__field(bool, crc_ok)
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),
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TP_fast_assign(
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__entry->master_idx = master->master.idx;
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__entry->rtag = rtag;
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__entry->rcrc = rcrc;
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__entry->rdata = be32_to_cpu(rdata);
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__entry->crc_ok = crc_ok;
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),
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TP_printk("fsi-acf%d rsp: tag=%04x crc=%04x data=%08x %c\n",
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__entry->master_idx, __entry->rtag, __entry->rcrc,
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__entry->rdata, __entry->crc_ok ? ' ' : '!'
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)
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);
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TRACE_EVENT(fsi_master_acf_crc_rsp_error,
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TP_PROTO(const struct fsi_master_acf *master, int retries),
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TP_ARGS(master, retries),
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TP_STRUCT__entry(
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__field(int, master_idx)
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__field(int, retries)
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),
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TP_fast_assign(
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__entry->master_idx = master->master.idx;
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__entry->retries = retries;
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),
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TP_printk("fsi-acf%d CRC error in response retry %d",
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__entry->master_idx, __entry->retries
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)
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);
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TRACE_EVENT(fsi_master_acf_poll_response_busy,
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TP_PROTO(const struct fsi_master_acf *master, int busy_count),
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TP_ARGS(master, busy_count),
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TP_STRUCT__entry(
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__field(int, master_idx)
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__field(int, busy_count)
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),
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TP_fast_assign(
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__entry->master_idx = master->master.idx;
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__entry->busy_count = busy_count;
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),
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TP_printk("fsi-acf%d: device reported busy %d times",
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__entry->master_idx, __entry->busy_count
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)
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);
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TRACE_EVENT(fsi_master_acf_cmd_abs_addr,
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TP_PROTO(const struct fsi_master_acf *master, u32 addr),
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TP_ARGS(master, addr),
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TP_STRUCT__entry(
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__field(int, master_idx)
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__field(u32, addr)
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),
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TP_fast_assign(
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__entry->master_idx = master->master.idx;
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__entry->addr = addr;
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),
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TP_printk("fsi-acf%d: Sending ABS_ADR %06x",
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__entry->master_idx, __entry->addr
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)
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);
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TRACE_EVENT(fsi_master_acf_cmd_rel_addr,
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TP_PROTO(const struct fsi_master_acf *master, u32 rel_addr),
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TP_ARGS(master, rel_addr),
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TP_STRUCT__entry(
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__field(int, master_idx)
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__field(u32, rel_addr)
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),
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TP_fast_assign(
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__entry->master_idx = master->master.idx;
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__entry->rel_addr = rel_addr;
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),
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TP_printk("fsi-acf%d: Sending REL_ADR %03x",
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__entry->master_idx, __entry->rel_addr
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)
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);
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TRACE_EVENT(fsi_master_acf_cmd_same_addr,
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TP_PROTO(const struct fsi_master_acf *master),
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TP_ARGS(master),
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TP_STRUCT__entry(
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__field(int, master_idx)
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),
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TP_fast_assign(
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__entry->master_idx = master->master.idx;
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),
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TP_printk("fsi-acf%d: Sending SAME_ADR",
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__entry->master_idx
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)
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);
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#endif /* _TRACE_FSI_MASTER_ACF_H */
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#include <trace/define_trace.h>
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