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| Current File : //sys/contrib/octeon-sdk/cvmx-error.c |
/***********************license start***************
* Copyright (c) 2003-2010 Cavium Networks (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 Networks 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
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* regulations, and may be subject to export or import regulations in other
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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***********************license end**************************************/
/**
* @file
*
* Interface to the Octeon extended error status.
*
* <hr>$Revision: 44252 $<hr>
*/
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-error.h>
#include <asm/octeon/cvmx-error-custom.h>
#include <asm/octeon/cvmx-pcie.h>
#include <asm/octeon/cvmx-srio.h>
#include <asm/octeon/cvmx-pexp-defs.h>
#else
#include "cvmx.h"
#include "cvmx-error.h"
#include "cvmx-error-custom.h"
#include "cvmx-pcie.h"
#include "cvmx-srio.h"
#include "cvmx-interrupt.h"
#endif
#define MAX_TABLE_SIZE 1024 /* Max number of error status bits we can support */
extern int cvmx_error_initialize_cn63xx(void);
extern int cvmx_error_initialize_cn63xxp1(void);
extern int cvmx_error_initialize_cn58xxp1(void);
extern int cvmx_error_initialize_cn58xx(void);
extern int cvmx_error_initialize_cn56xxp1(void);
extern int cvmx_error_initialize_cn56xx(void);
extern int cvmx_error_initialize_cn50xx(void);
extern int cvmx_error_initialize_cn52xxp1(void);
extern int cvmx_error_initialize_cn52xx(void);
extern int cvmx_error_initialize_cn38xxp2(void);
extern int cvmx_error_initialize_cn38xx(void);
extern int cvmx_error_initialize_cn31xx(void);
extern int cvmx_error_initialize_cn30xx(void);
/* Each entry in this array represents a status bit function or chain */
static CVMX_SHARED cvmx_error_info_t __cvmx_error_table[MAX_TABLE_SIZE];
static CVMX_SHARED int __cvmx_error_table_size = 0;
static CVMX_SHARED cvmx_error_flags_t __cvmx_error_flags;
#define REG_MATCH(h, reg_type, status_addr, status_mask) \
((h->reg_type == reg_type) && (h->status_addr == status_addr) && (h->status_mask == status_mask))
/**
* @INTERNAL
* Read a status or enable register from the hardware
*
* @param reg_type Register type to read
* @param addr Address to read
*
* @return Result of the read
*/
static uint64_t __cvmx_error_read_hw(cvmx_error_register_t reg_type, uint64_t addr)
{
switch (reg_type)
{
case __CVMX_ERROR_REGISTER_NONE:
return 0;
case CVMX_ERROR_REGISTER_IO64:
return cvmx_read_csr(addr);
case CVMX_ERROR_REGISTER_IO32:
return cvmx_read64_uint32(addr ^ 4);
case CVMX_ERROR_REGISTER_PCICONFIG:
return cvmx_pcie_cfgx_read(addr>>32, addr&0xffffffffull);
case CVMX_ERROR_REGISTER_SRIOMAINT:
{
uint32_t r;
if (cvmx_srio_config_read32(addr>>32, 0, -1, 0, 0, addr&0xffffffffull, &r))
return 0;
else
return r;
}
}
return 0;
}
/**
* @INTERNAL
* Write a status or enable register to the hardware
*
* @param reg_type Register type to write
* @param addr Address to write
* @param value Value to write
*/
static void __cvmx_error_write_hw(cvmx_error_register_t reg_type, uint64_t addr, uint64_t value)
{
switch (reg_type)
{
case __CVMX_ERROR_REGISTER_NONE:
return;
case CVMX_ERROR_REGISTER_IO64:
cvmx_write_csr(addr, value);
return;
case CVMX_ERROR_REGISTER_IO32:
cvmx_write64_uint32(addr ^ 4, value);
return;
case CVMX_ERROR_REGISTER_PCICONFIG:
cvmx_pcie_cfgx_write(addr>>32, addr&0xffffffffull, value);
return;
case CVMX_ERROR_REGISTER_SRIOMAINT:
{
cvmx_srio_config_write32(addr>>32, 0, -1, 0, 0, addr&0xffffffffull, value);
return;
}
}
}
/**
* @INTERNAL
* Function for processing non leaf error status registers. This function
* calls all handlers for this passed register and all children linked
* to it.
*
* @param info Error register to check
*
* @return Number of error status bits found or zero if no bits were set.
*/
int __cvmx_error_decode(const cvmx_error_info_t *info)
{
uint64_t status;
uint64_t enable;
int i;
int handled = 0;
/* Read the status and enable state */
status = __cvmx_error_read_hw(info->reg_type, info->status_addr);
if (info->enable_addr)
enable = __cvmx_error_read_hw(info->reg_type, info->enable_addr);
else
enable = 0;
for (i = 0; i < __cvmx_error_table_size; i++)
{
const cvmx_error_info_t *h = &__cvmx_error_table[i];
uint64_t masked_status = status;
/* If this is a child of the current register then recurse and process
the child */
if ((h->parent.reg_type == info->reg_type) &&
(h->parent.status_addr == info->status_addr) &&
(status & h->parent.status_mask))
handled += __cvmx_error_decode(h);
if ((h->reg_type != info->reg_type) || (h->status_addr != info->status_addr))
continue;
/* If the corresponding enable bit is not set then we have nothing to do */
if (h->enable_addr && h->enable_mask)
{
if (!(enable & h->enable_mask))
continue;
}
/* Apply the mask to eliminate irrelevant bits */
if (h->status_mask)
masked_status &= h->status_mask;
/* Finally call the handler function unless it is this function */
if (masked_status && h->func && (h->func != __cvmx_error_decode))
handled += h->func(h);
}
/* Ths should be the total errors found */
return handled;
}
/**
* @INTERNAL
* This error bit handler simply prints a message and clears the status bit
*
* @param info Error register to check
*
* @return
*/
int __cvmx_error_display(const cvmx_error_info_t *info)
{
const char *message = (const char *)(long)info->user_info;
/* This assumes that all bits in the status register are RO or R/W1C */
__cvmx_error_write_hw(info->reg_type, info->status_addr, info->status_mask);
cvmx_safe_printf("%s", message);
return 1;
}
/**
* Initalize the error status system. This should be called once
* before any other functions are called. This function adds default
* handlers for most all error events but does not enable them. Later
* calls to cvmx_error_enable() are needed.
*
* @param flags Optional flags.
*
* @return Zero on success, negative on failure.
*/
int cvmx_error_initialize(cvmx_error_flags_t flags)
{
__cvmx_error_flags = flags;
if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS2_X))
{
if (cvmx_error_initialize_cn63xx())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X))
{
if (cvmx_error_initialize_cn63xxp1())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN58XX_PASS1_X))
{
if (cvmx_error_initialize_cn58xxp1())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN58XX))
{
if (cvmx_error_initialize_cn58xx())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X))
{
if (cvmx_error_initialize_cn56xxp1())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN56XX))
{
if (cvmx_error_initialize_cn56xx())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN50XX))
{
if (cvmx_error_initialize_cn50xx())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X))
{
if (cvmx_error_initialize_cn52xxp1())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN52XX))
{
if (cvmx_error_initialize_cn52xx())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN38XX_PASS2))
{
if (cvmx_error_initialize_cn38xxp2())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN38XX))
{
if (cvmx_error_initialize_cn38xx())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN31XX))
{
if (cvmx_error_initialize_cn31xx())
return -1;
}
else if (OCTEON_IS_MODEL(OCTEON_CN30XX))
{
if (cvmx_error_initialize_cn30xx())
return -1;
}
else
{
cvmx_warn("cvmx_error_initialize() needs update for this Octeon model\n");
return -1;
}
if (__cvmx_error_custom_initialize())
return -1;
/* Enable all of the purely internal error sources by default */
cvmx_error_enable_group(CVMX_ERROR_GROUP_INTERNAL, 0);
/* Enable DDR error reporting based on the memory controllers */
if (OCTEON_IS_MODEL(OCTEON_CN56XX))
{
cvmx_l2c_cfg_t l2c_cfg;
l2c_cfg.u64 = cvmx_read_csr(CVMX_L2C_CFG);
if (l2c_cfg.s.dpres0)
cvmx_error_enable_group(CVMX_ERROR_GROUP_LMC, 0);
if (l2c_cfg.s.dpres1)
cvmx_error_enable_group(CVMX_ERROR_GROUP_LMC, 1);
}
else
cvmx_error_enable_group(CVMX_ERROR_GROUP_LMC, 0);
/* Old PCI parts don't have a common PCI init, so enable error
reporting if the bootloader told us we are a PCI host. PCIe
is handled when cvmx_pcie_rc_initialize is called */
if (!octeon_has_feature(OCTEON_FEATURE_PCIE) &&
(cvmx_sysinfo_get()->bootloader_config_flags & CVMX_BOOTINFO_CFG_FLAG_PCI_HOST))
cvmx_error_enable_group(CVMX_ERROR_GROUP_PCI, 0);
/* FIXME: Why is this needed for CN63XX? */
if (OCTEON_IS_MODEL(OCTEON_CN63XX))
cvmx_write_csr(CVMX_PEXP_SLI_INT_SUM, 1);
return 0;
}
/**
* Poll the error status registers and call the appropriate error
* handlers. This should be called in the RSL interrupt handler
* for your application or operating system.
*
* @return Number of error handlers called. Zero means this call
* found no errors and was spurious.
*/
int cvmx_error_poll(void)
{
int i;
int count = 0;
/* Call all handlers that don't have a parent */
for (i = 0; i < __cvmx_error_table_size; i++)
if (__cvmx_error_table[i].parent.reg_type == __CVMX_ERROR_REGISTER_NONE)
count += __cvmx_error_decode(&__cvmx_error_table[i]);
return count;
}
/**
* Register to be called when an error status bit is set. Most users
* will not need to call this function as cvmx_error_initialize()
* registers default handlers for most error conditions. This function
* is normally used to add more handlers without changing the existing
* handlers.
*
* @param new_info Information about the handler for a error register. The
* structure passed is copied and can be destroyed after the
* call. All members of the structure must be populated, even the
* parent information.
*
* @return Zero on success, negative on failure.
*/
int cvmx_error_add(const cvmx_error_info_t *new_info)
{
if (__cvmx_error_table_size >= MAX_TABLE_SIZE)
{
cvmx_warn("cvmx-error table full\n");
return -1;
}
__cvmx_error_table[__cvmx_error_table_size] = *new_info;
__cvmx_error_table_size++;
return 0;
}
/**
* Remove all handlers for a status register and mask. Normally
* this function should not be called. Instead a new handler should be
* installed to replace the existing handler. In the even that all
* reporting of a error bit should be removed, then use this
* function.
*
* @param reg_type Type of the status register to remove
* @param status_addr
* Status register to remove.
* @param status_mask
* All handlers for this status register with this mask will be
* removed.
* @param old_info If not NULL, this is filled with information about the handler
* that was removed.
*
* @return Zero on success, negative on failure (not found).
*/
int cvmx_error_remove(cvmx_error_register_t reg_type,
uint64_t status_addr, uint64_t status_mask,
cvmx_error_info_t *old_info)
{
int found = 0;
int i;
for (i = 0; i < __cvmx_error_table_size; i++)
{
cvmx_error_info_t *h = &__cvmx_error_table[i];
if (!REG_MATCH(h, reg_type, status_addr, status_mask))
continue;
if (old_info)
*old_info = *h;
memset(h, 0, sizeof(*h));
found = 1;
}
if (found)
return 0;
else
{
cvmx_warn("cvmx-error remove couldn't find requested register\n");
return -1;
}
}
/**
* Change the function and user_info for an existing error status
* register. This function should be used to replace the default
* handler with an application specific version as needed.
*
* @param reg_type Type of the status register to change
* @param status_addr
* Status register to change.
* @param status_mask
* All handlers for this status register with this mask will be
* changed.
* @param new_func New function to use to handle the error status
* @param new_user_info
* New user info parameter for the function
* @param old_func If not NULL, the old function is returned. Useful for restoring
* the old handler.
* @param old_user_info
* If not NULL, the old user info parameter.
*
* @return Zero on success, negative on failure
*/
int cvmx_error_change_handler(cvmx_error_register_t reg_type,
uint64_t status_addr, uint64_t status_mask,
cvmx_error_func_t new_func, uint64_t new_user_info,
cvmx_error_func_t *old_func, uint64_t *old_user_info)
{
int found = 0;
int i;
for (i = 0; i < __cvmx_error_table_size; i++)
{
cvmx_error_info_t *h = &__cvmx_error_table[i];
if (!REG_MATCH(h, reg_type, status_addr, status_mask))
continue;
if (old_func)
*old_func = h->func;
if (old_user_info)
*old_user_info = h->user_info;
h->func = new_func;
h->user_info = new_user_info;
found = 1;
}
if (found)
return 0;
else
{
cvmx_warn("cvmx-error change couldn't find requested register\n");
return -1;
}
}
/**
* Enable all error registers for a logical group. This should be
* called whenever a logical group is brought online.
*
* @param group Logical group to enable
* @param group_index
* Index for the group as defined in the cvmx_error_group_t
* comments.
*
* @return Zero on success, negative on failure.
*/
int cvmx_error_enable_group(cvmx_error_group_t group, int group_index)
{
int i;
uint64_t enable;
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
return 0;
for (i = 0; i < __cvmx_error_table_size; i++)
{
const cvmx_error_info_t *h = &__cvmx_error_table[i];
/* Skip entries that have a different group or group index. We
also skip entries that don't have an enable */
if ((h->group != group) || (h->group_index != group_index) || (!h->enable_addr))
continue;
/* Skip entries that have flags that don't match the user's
selected flags */
if (h->flags && (h->flags != (h->flags & __cvmx_error_flags)))
continue;
/* Update the enables for this entry */
enable = __cvmx_error_read_hw(h->reg_type, h->enable_addr);
if (h->reg_type == CVMX_ERROR_REGISTER_PCICONFIG)
enable &= ~h->enable_mask; /* PCI bits have reversed polarity */
else
enable |= h->enable_mask;
__cvmx_error_write_hw(h->reg_type, h->enable_addr, enable);
}
return 0;
}
/**
* Disable all error registers for a logical group. This should be
* called whenever a logical group is brought offline. Many blocks
* will report spurious errors when offline unless this function
* is called.
*
* @param group Logical group to disable
* @param group_index
* Index for the group as defined in the cvmx_error_group_t
* comments.
*
* @return Zero on success, negative on failure.
*/
int cvmx_error_disable_group(cvmx_error_group_t group, int group_index)
{
int i;
uint64_t enable;
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
return 0;
for (i = 0; i < __cvmx_error_table_size; i++)
{
const cvmx_error_info_t *h = &__cvmx_error_table[i];
/* Skip entries that have a different group or group index. We
also skip entries that don't have an enable */
if ((h->group != group) || (h->group_index != group_index) || (!h->enable_addr))
continue;
/* Update the enables for this entry */
enable = __cvmx_error_read_hw(h->reg_type, h->enable_addr);
if (h->reg_type == CVMX_ERROR_REGISTER_PCICONFIG)
enable |= h->enable_mask; /* PCI bits have reversed polarity */
else
enable &= ~h->enable_mask;
__cvmx_error_write_hw(h->reg_type, h->enable_addr, enable);
}
return 0;
}
/**
* Enable all handlers for a specific status register mask.
*
* @param reg_type Type of the status register
* @param status_addr
* Status register address
* @param status_mask
* All handlers for this status register with this mask will be
* enabled.
*
* @return Zero on success, negative on failure.
*/
int cvmx_error_enable(cvmx_error_register_t reg_type,
uint64_t status_addr, uint64_t status_mask)
{
int found = 0;
int i;
uint64_t enable;
for (i = 0; i < __cvmx_error_table_size; i++)
{
cvmx_error_info_t *h = &__cvmx_error_table[i];
if (!REG_MATCH(h, reg_type, status_addr, status_mask) || !h->enable_addr)
continue;
enable = __cvmx_error_read_hw(h->reg_type, h->enable_addr);
if (h->reg_type == CVMX_ERROR_REGISTER_PCICONFIG)
enable &= ~h->enable_mask; /* PCI bits have reversed polarity */
else
enable |= h->enable_mask;
__cvmx_error_write_hw(h->reg_type, h->enable_addr, enable);
h->flags &= ~CVMX_ERROR_FLAGS_DISABLED;
found = 1;
}
if (found)
return 0;
else
{
cvmx_warn("cvmx-error enable couldn't find requested register\n");
return -1;
}
}
/**
* Disable all handlers for a specific status register and mask.
*
* @param reg_type Type of the status register
* @param status_addr
* Status register address
* @param status_mask
* All handlers for this status register with this mask will be
* disabled.
*
* @return Zero on success, negative on failure.
*/
int cvmx_error_disable(cvmx_error_register_t reg_type,
uint64_t status_addr, uint64_t status_mask)
{
int found = 0;
int i;
uint64_t enable;
for (i = 0; i < __cvmx_error_table_size; i++)
{
cvmx_error_info_t *h = &__cvmx_error_table[i];
if (!REG_MATCH(h, reg_type, status_addr, status_mask) || !h->enable_addr)
continue;
enable = __cvmx_error_read_hw(h->reg_type, h->enable_addr);
if (h->reg_type == CVMX_ERROR_REGISTER_PCICONFIG)
enable |= h->enable_mask; /* PCI bits have reversed polarity */
else
enable &= ~h->enable_mask;
__cvmx_error_write_hw(h->reg_type, h->enable_addr, enable);
h->flags |= CVMX_ERROR_FLAGS_DISABLED;
found = 1;
}
if (found)
return 0;
else
{
cvmx_warn("cvmx-error disable couldn't find requested register\n");
return -1;
}
}