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freebsd-dev/sys/contrib/octeon-sdk/cvmx-log.c
Juli Mallett dc4ee6ca91 Merge the Cavium Octeon SDK 2.3.0 Simple Executive code and update FreeBSD to 
make use of it where possible.

This primarily brings in support for newer hardware, and FreeBSD is not yet
able to support the abundance of IRQs on new hardware and many features in the
Ethernet driver.

Because of the changes to IRQs in the Simple Executive, we have to maintain our
own list of Octeon IRQs now, which probably can be pared-down and be specific
to the CIU interrupt unit soon, and when other interrupt mechanisms are added
they can maintain their own definitions.

Remove unmasking of interrupts from within the UART device now that the
function used is no longer present in the Simple Executive.  The unmasking
seems to have been gratuitous as this is more properly handled by the buses
above the UART device, and seems to work on that basis.
2012-03-11 06:17:49 +00:00

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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* cvmx-log supplies a fast log buffer implementation. Each core writes
* log data to a differnet buffer to avoid synchronization overhead. Function
* call logging can be turned on with the GCC option "-pg".
*
* <hr>$Revision: 70030 $<hr>
*/
#include "cvmx.h"
#include "cvmx-core.h"
#include "cvmx-log.h"
#define CVMX_LOG_BUFFER_SIZE (1<<15)
#define CVMX_LOG_NUM_BUFFERS 4
/**
* The possible types of log data that can be stored in the
* buffer.
*/
typedef enum
{
CVMX_LOG_TYPE_PC = 0, /**< Log of the program counter location. used for code profiling / tracing */
CVMX_LOG_TYPE_PRINTF, /**< Constant printf format string with two 64bit arguments */
CVMX_LOG_TYPE_DATA, /**< Arbitrary array of dwords. Max size is 31 dwords */
CVMX_LOG_TYPE_STRUCTURE,/**< Log a structured data element. Max size is 30 dwords */
CVMX_LOG_TYPE_PERF, /**< Mips performance counters control registers followed by the data */
} cvmx_log_type_t;
/**
* Header definition for each log entry.
*/
typedef union
{
uint64_t u64;
struct
{
cvmx_log_type_t type : 3; /* Data in the log entry */
uint64_t size : 8; /* Data size in 64bit words */
uint64_t cycle :53; /* Low bits of the cycle counter as a timestamp */
} s;
} cvmx_log_header_t;
/**
* Circular log buffer. Each processor gets a private one to
* write to. Log entries are added at the current write
* location, then the write location is incremented. The
* buffer may wrap in the middle of a log entry.
*/
static uint64_t cvmx_log_buffers[CVMX_LOG_NUM_BUFFERS][CVMX_LOG_BUFFER_SIZE];
/**
* Current locations in the log.
*/
uint64_t *cvmx_log_buffer_write_ptr = NULL; /* The next write will occur here */
uint64_t *cvmx_log_buffer_end_ptr = NULL; /* Write must move to the next buffer when it equals this */
uint64_t *cvmx_log_buffer_head_ptr = NULL; /* Pointer to begin extracting log data from */
static uint64_t *cvmx_log_buffer_read_ptr = NULL; /* Location cvmx_display is reading from */
static uint64_t *cvmx_log_buffer_read_end_ptr = NULL; /* Location where read will need the next buffer */
uint64_t cvmx_log_mcd0_on_full = 0; /* If this is set, cvm-log will assert MCD0 when the log
is full. This is set by the remote logging utility through
the debugger interface. */
/**
* @INTERNAL
* Initialize the log for writing
*/
static void __cvmx_log_initialize(void) CVMX_LOG_DISABLE_PC_LOGGING;
static void __cvmx_log_initialize(void)
{
int buf_num;
/* Link the buffers together using the last element in each buffer */
for (buf_num=0; buf_num<CVMX_LOG_NUM_BUFFERS-1; buf_num++)
cvmx_log_buffers[buf_num][CVMX_LOG_BUFFER_SIZE-1] = CAST64(cvmx_log_buffers[buf_num+1]);
cvmx_log_buffers[CVMX_LOG_NUM_BUFFERS-1][CVMX_LOG_BUFFER_SIZE-1] = CAST64(NULL);
cvmx_log_buffer_head_ptr = &cvmx_log_buffers[0][0];
cvmx_log_buffer_write_ptr = &cvmx_log_buffers[0][0];
cvmx_log_buffer_end_ptr = cvmx_log_buffer_write_ptr + CVMX_LOG_BUFFER_SIZE-1;
}
/**
* @INTERNAL
* Called when the log is full of data. This function must
* make room for more log data before returning.
*/
static void __cvmx_log_full_process(void) CVMX_LOG_DISABLE_PC_LOGGING;
static void __cvmx_log_full_process(void)
{
if (cvmx_log_mcd0_on_full)
{
register uint64_t tmp;
/* Pulse MCD0 signal so a remote utility can extract the data */
asm volatile (
"dmfc0 %0, $22\n"
"ori %0, %0, 0x1110\n"
"dmtc0 %0, $22\n"
"nop\n"
"nop\n"
"nop\n"
"nop\n"
"nop\n"
"nop\n"
: "=r" (tmp));
}
/* The write ptr may have been modifed by the debugger, check it again */
if (!(volatile uint64_t)CAST64(cvmx_log_buffer_write_ptr))
{
#ifndef __KERNEL__
/* Disabled for the Linux kernel since printk is also profiled */
cvmx_dprintf("Log is full, reusing first buffer\n");
#endif
*cvmx_log_buffer_end_ptr = CAST64(cvmx_log_buffer_head_ptr);
cvmx_log_buffer_write_ptr = cvmx_log_buffer_head_ptr;
cvmx_log_buffer_end_ptr = cvmx_log_buffer_write_ptr + CVMX_LOG_BUFFER_SIZE-1;
cvmx_log_buffer_head_ptr = CASTPTR(uint64_t, *cvmx_log_buffer_end_ptr);
*cvmx_log_buffer_end_ptr = CAST64(NULL);
}
}
/**
* @INTERNAL
* Simple inline function to build a log header
*
* @param type Type of header to build
* @param size Amount of data that follows the header in dwords
* @return The header
*/
static inline uint64_t __cvmx_log_build_header(cvmx_log_type_t type, uint64_t size) CVMX_LOG_DISABLE_PC_LOGGING;
static inline uint64_t __cvmx_log_build_header(cvmx_log_type_t type, uint64_t size)
{
cvmx_log_header_t header;
header.u64 = 0;
header.s.type = type;
header.s.size = size;
header.s.cycle = cvmx_get_cycle();
return header.u64;
}
/**
* @INTERNAL
* Function to write and increment the position. It rotates
* to the next log buffer as necessary.
*
* @param data Data to write to the log
*/
static inline void __cvmx_log_write(uint64_t data) CVMX_LOG_DISABLE_PC_LOGGING;
static inline void __cvmx_log_write(uint64_t data)
{
/* Check and see if we need to rotate the log */
if (cvmx_likely(cvmx_log_buffer_write_ptr != cvmx_log_buffer_end_ptr))
{
/* No rotate is necessary, just write the data */
*cvmx_log_buffer_write_ptr++ = data;
}
else
{
/* Initialize the log if necessary */
if (cvmx_unlikely(cvmx_log_buffer_head_ptr == NULL))
__cvmx_log_initialize();
else
{
cvmx_log_buffer_write_ptr = CASTPTR(uint64_t, *cvmx_log_buffer_end_ptr);
if (cvmx_likely(cvmx_log_buffer_write_ptr))
{
/* Rotate the log. Might be a good time to send the old buffer
somewhere */
cvmx_log_buffer_end_ptr = cvmx_log_buffer_write_ptr + CVMX_LOG_BUFFER_SIZE-1;
}
else
__cvmx_log_full_process(); /* After this function returns, the log must be ready for updates */
}
*cvmx_log_buffer_write_ptr++ = data;
}
}
/**
* Log a program counter address to the log. This is caused by
* the assembly code function mcount when writing the PC value
* is more complicated that the simple case support by it.
*
* @param pc Program counter address to log
*/
void cvmx_log_pc(uint64_t pc) CVMX_LOG_DISABLE_PC_LOGGING;
void cvmx_log_pc(uint64_t pc)
{
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_PC, 1));
__cvmx_log_write(pc);
}
/**
* Log a constant printf style format string with 0 to 4
* arguments. The string must persist until the log is read,
* but the parameters are copied into the log.
*
* @param format Constant printf style format string.
*/
void cvmx_log_printf0(const char *format)
{
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_PRINTF, 1));
__cvmx_log_write(CAST64(format));
}
/**
* Log a constant printf style format string with 0 to 4
* arguments. The string must persist until the log is read,
* but the parameters are copied into the log.
*
* @param format Constant printf style format string.
* @param number1 64bit argument to the printf format string
*/
void cvmx_log_printf1(const char *format, uint64_t number1)
{
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_PRINTF, 2));
__cvmx_log_write(CAST64(format));
__cvmx_log_write(number1);
}
/**
* Log a constant printf style format string with 0 to 4
* arguments. The string must persist until the log is read,
* but the parameters are copied into the log.
*
* @param format Constant printf style format string.
* @param number1 64bit argument to the printf format string
* @param number2 64bit argument to the printf format string
*/
void cvmx_log_printf2(const char *format, uint64_t number1, uint64_t number2)
{
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_PRINTF, 3));
__cvmx_log_write(CAST64(format));
__cvmx_log_write(number1);
__cvmx_log_write(number2);
}
/**
* Log a constant printf style format string with 0 to 4
* arguments. The string must persist until the log is read,
* but the parameters are copied into the log.
*
* @param format Constant printf style format string.
* @param number1 64bit argument to the printf format string
* @param number2 64bit argument to the printf format string
* @param number3 64bit argument to the printf format string
*/
void cvmx_log_printf3(const char *format, uint64_t number1, uint64_t number2, uint64_t number3)
{
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_PRINTF, 4));
__cvmx_log_write(CAST64(format));
__cvmx_log_write(number1);
__cvmx_log_write(number2);
__cvmx_log_write(number3);
}
/**
* Log a constant printf style format string with 0 to 4
* arguments. The string must persist until the log is read,
* but the parameters are copied into the log.
*
* @param format Constant printf style format string.
* @param number1 64bit argument to the printf format string
* @param number2 64bit argument to the printf format string
* @param number3 64bit argument to the printf format string
* @param number4 64bit argument to the printf format string
*/
void cvmx_log_printf4(const char *format, uint64_t number1, uint64_t number2, uint64_t number3, uint64_t number4)
{
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_PRINTF, 5));
__cvmx_log_write(CAST64(format));
__cvmx_log_write(number1);
__cvmx_log_write(number2);
__cvmx_log_write(number3);
__cvmx_log_write(number4);
}
/**
* Log an arbitrary block of 64bit words. At most 255 64bit
* words can be logged. The words are copied into the log.
*
* @param size_in_dwords
* Number of 64bit dwords to copy into the log.
* @param data Array of 64bit dwords to copy
*/
void cvmx_log_data(uint64_t size_in_dwords, const uint64_t *data)
{
if (size_in_dwords > 255)
size_in_dwords = 255;
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_DATA, size_in_dwords));
while (size_in_dwords--)
__cvmx_log_write(*data++);
}
/**
* Log a structured data object. Post processing will use the
* debugging information in the ELF file to determine how to
* display the structure. Max of 2032 bytes.
*
* Example:
* cvmx_log_structure("cvmx_wqe_t", work, sizeof(*work));
*
* @param type C typedef expressed as a string. This will be used to
* lookup the structure in the debugging infirmation.
* @param data Data to be written to the log.
* @param size_in_bytes
* Size if the data in bytes. Normally you'll use the
* sizeof() operator here.
*/
void cvmx_log_structure(const char *type, void *data, int size_in_bytes)
{
uint64_t size_in_dwords = (size_in_bytes + 7) >> 3;
uint64_t *ptr = (uint64_t*)data;
if (size_in_dwords > 254)
size_in_dwords = 254;
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_STRUCTURE, size_in_dwords + 1));
__cvmx_log_write(CAST64(type));
while (size_in_dwords--)
__cvmx_log_write(*ptr++);
}
/**
* Setup the mips performance counters
*
* @param counter1 Event type for counter 1
* @param counter2 Event type for counter 2
*/
void cvmx_log_perf_setup(cvmx_core_perf_t counter1, cvmx_core_perf_t counter2)
{
cvmx_core_perf_control_t control;
control.u32 = 0;
control.s.event = counter1;
control.s.u = 1;
control.s.s = 1;
control.s.k = 1;
control.s.ex = 1;
asm ("mtc0 %0, $25, 0\n" : : "r"(control.u32));
control.s.event = counter2;
asm ("mtc0 %0, $25, 2\n" : : "r"(control.u32));
}
/**
* Log the performance counters
*/
void cvmx_log_perf(void)
{
uint64_t control1;
uint64_t control2;
uint64_t data1;
uint64_t data2;
asm ("dmfc0 %0, $25, 1\n" : "=r"(data1));
asm ("dmfc0 %0, $25, 3\n" : "=r"(data2));
asm ("mfc0 %0, $25, 0\n" : "=r"(control1));
asm ("mfc0 %0, $25, 2\n" : "=r"(control2));
__cvmx_log_write(__cvmx_log_build_header(CVMX_LOG_TYPE_PERF, 3));
__cvmx_log_write(((control1 & 0xffffffff) << 32) | (control2 & 0xffffffff));
__cvmx_log_write(data1);
__cvmx_log_write(data2);
}
/**
* @INTERNAL
* Read a dword from the log
*
* @return the dword
*/
static uint64_t __cvmx_log_read(void) CVMX_LOG_DISABLE_PC_LOGGING;
static uint64_t __cvmx_log_read(void)
{
uint64_t data;
/* Check and see if we need to rotate the log */
if (cvmx_likely(cvmx_log_buffer_read_ptr != cvmx_log_buffer_read_end_ptr))
{
/* No rotate is necessary, just read the data */
data = *cvmx_log_buffer_read_ptr++;
}
else
{
cvmx_log_buffer_read_ptr = CASTPTR(uint64_t, *cvmx_log_buffer_read_end_ptr);
if (cvmx_likely(cvmx_log_buffer_read_ptr))
{
/* Rotate to the next log buffer */
cvmx_log_buffer_read_end_ptr = cvmx_log_buffer_read_ptr + CVMX_LOG_BUFFER_SIZE-1;
data = *cvmx_log_buffer_read_ptr++;
}
else
{
/* No more log buffers, return 0 */
cvmx_log_buffer_read_end_ptr = NULL;
data = 0;
}
}
return data;
}
/**
* Display the current log in a human readable format.
*/
void cvmx_log_display(void)
{
unsigned int i;
cvmx_log_header_t header;
cvmx_log_buffer_read_ptr = cvmx_log_buffer_head_ptr;
cvmx_log_buffer_read_end_ptr = cvmx_log_buffer_read_ptr + CVMX_LOG_BUFFER_SIZE-1;
while (cvmx_log_buffer_read_ptr && (cvmx_log_buffer_read_ptr != cvmx_log_buffer_write_ptr))
{
header.u64 = __cvmx_log_read();
if (header.s.cycle == 0)
continue;
printf("%llu: ", (unsigned long long)header.s.cycle);
switch (header.s.type)
{
case CVMX_LOG_TYPE_PC:
if (header.s.size == 1)
printf("pc 0x%016llx\n", (unsigned long long)__cvmx_log_read());
else
printf("Illegal size (%d) for log entry: pc\n", header.s.size);
break;
case CVMX_LOG_TYPE_PRINTF:
switch (header.s.size)
{
case 1:
printf(CASTPTR(const char, __cvmx_log_read()));
break;
case 2:
printf(CASTPTR(const char, __cvmx_log_read()), __cvmx_log_read());
break;
case 3:
printf(CASTPTR(const char, __cvmx_log_read()), __cvmx_log_read(), __cvmx_log_read());
break;
case 4:
printf(CASTPTR(const char, __cvmx_log_read()), __cvmx_log_read(), __cvmx_log_read(), __cvmx_log_read());
break;
case 5:
printf(CASTPTR(const char, __cvmx_log_read()), __cvmx_log_read(), __cvmx_log_read(), __cvmx_log_read(), __cvmx_log_read());
break;
default:
printf("Illegal size (%d) for log entry: printf\n", header.s.size);
break;
}
printf("\n");
break;
case CVMX_LOG_TYPE_DATA:
printf("data");
for (i=0; i<header.s.size; i++)
printf(" 0x%016llx", (unsigned long long)__cvmx_log_read());
printf("\n");
break;
case CVMX_LOG_TYPE_STRUCTURE:
printf("struct %s", CASTPTR(const char, __cvmx_log_read()));
for (i=1; i<header.s.size; i++)
printf(" 0x%016llx", (unsigned long long)__cvmx_log_read());
printf("\n");
break;
case CVMX_LOG_TYPE_PERF:
if (header.s.size == 3)
{
unsigned long long control = __cvmx_log_read();
unsigned long long data1 = __cvmx_log_read();
unsigned long long data2 = __cvmx_log_read();
printf("perf control=0x%016llx data1=0x%016llx data2=0x%016llx\n", control, data1, data2);
}
else
printf("Illegal size (%d) for log entry: perf\n", header.s.size);
break;
default:
break;
}
}
}
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