drivers/edac/octeon_edac-l2c.c

Source file repositories/reference/linux-study-clean/drivers/edac/octeon_edac-l2c.c

File Facts

System
Linux kernel
Corpus path
drivers/edac/octeon_edac-l2c.c
Extension
.c
Size
5456 bytes
Lines
207
Domain
Driver Families
Bucket
drivers/edac
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/edac.h>

#include <asm/octeon/cvmx.h>

#include "edac_module.h"

#define EDAC_MOD_STR "octeon-l2c"

static void octeon_l2c_poll_oct1(struct edac_device_ctl_info *l2c)
{
	union cvmx_l2t_err l2t_err, l2t_err_reset;
	union cvmx_l2d_err l2d_err, l2d_err_reset;

	l2t_err_reset.u64 = 0;
	l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
	if (l2t_err.s.sec_err) {
		edac_device_handle_ce(l2c, 0, 0,
				      "Tag Single bit error (corrected)");
		l2t_err_reset.s.sec_err = 1;
	}
	if (l2t_err.s.ded_err) {
		edac_device_handle_ue(l2c, 0, 0,
				      "Tag Double bit error (detected)");
		l2t_err_reset.s.ded_err = 1;
	}
	if (l2t_err_reset.u64)
		cvmx_write_csr(CVMX_L2T_ERR, l2t_err_reset.u64);

	l2d_err_reset.u64 = 0;
	l2d_err.u64 = cvmx_read_csr(CVMX_L2D_ERR);
	if (l2d_err.s.sec_err) {
		edac_device_handle_ce(l2c, 0, 1,
				      "Data Single bit error (corrected)");
		l2d_err_reset.s.sec_err = 1;
	}
	if (l2d_err.s.ded_err) {
		edac_device_handle_ue(l2c, 0, 1,
				      "Data Double bit error (detected)");
		l2d_err_reset.s.ded_err = 1;
	}
	if (l2d_err_reset.u64)
		cvmx_write_csr(CVMX_L2D_ERR, l2d_err_reset.u64);

}

static void _octeon_l2c_poll_oct2(struct edac_device_ctl_info *l2c, int tad)
{
	union cvmx_l2c_err_tdtx err_tdtx, err_tdtx_reset;
	union cvmx_l2c_err_ttgx err_ttgx, err_ttgx_reset;
	char buf1[64];
	char buf2[80];

	err_tdtx_reset.u64 = 0;
	err_tdtx.u64 = cvmx_read_csr(CVMX_L2C_ERR_TDTX(tad));
	if (err_tdtx.s.dbe || err_tdtx.s.sbe ||
	    err_tdtx.s.vdbe || err_tdtx.s.vsbe)
		snprintf(buf1, sizeof(buf1),
			 "type:%d, syn:0x%x, way:%d",
			 err_tdtx.s.type, err_tdtx.s.syn, err_tdtx.s.wayidx);

	if (err_tdtx.s.dbe) {
		snprintf(buf2, sizeof(buf2),
			 "L2D Double bit error (detected):%s", buf1);
		err_tdtx_reset.s.dbe = 1;
		edac_device_handle_ue(l2c, tad, 1, buf2);
	}
	if (err_tdtx.s.sbe) {
		snprintf(buf2, sizeof(buf2),
			 "L2D Single bit error (corrected):%s", buf1);
		err_tdtx_reset.s.sbe = 1;
		edac_device_handle_ce(l2c, tad, 1, buf2);
	}
	if (err_tdtx.s.vdbe) {
		snprintf(buf2, sizeof(buf2),
			 "VBF Double bit error (detected):%s", buf1);
		err_tdtx_reset.s.vdbe = 1;
		edac_device_handle_ue(l2c, tad, 1, buf2);
	}
	if (err_tdtx.s.vsbe) {
		snprintf(buf2, sizeof(buf2),
			 "VBF Single bit error (corrected):%s", buf1);
		err_tdtx_reset.s.vsbe = 1;
		edac_device_handle_ce(l2c, tad, 1, buf2);
	}
	if (err_tdtx_reset.u64)
		cvmx_write_csr(CVMX_L2C_ERR_TDTX(tad), err_tdtx_reset.u64);

Annotation

Implementation Notes