e752x_edac.c

来自「linux 内核源代码」· C语言 代码 · 共 1,153 行 · 第 1/3 页

{
	*error_found = 1;

	if (handle_error)
		do_process_ded_retry(mci, error, retry_add);
}

static inline void process_threshold_ce(struct mem_ctl_info *mci, u16 error,
					int *error_found, int handle_error)
{
	*error_found = 1;

	if (handle_error)
		e752x_mc_printk(mci, KERN_WARNING, "Memory threshold CE\n");
}

static char *global_message[11] = {
	"PCI Express C1", "PCI Express C", "PCI Express B1",
	"PCI Express B", "PCI Express A1", "PCI Express A",
	"DMA Controler", "HUB Interface", "System Bus",
	"DRAM Controler", "Internal Buffer"
};

static char *fatal_message[2] = { "Non-Fatal ", "Fatal " };

static void do_global_error(int fatal, u32 errors)
{
	int i;

	for (i = 0; i < 11; i++) {
		if (errors & (1 << i))
			e752x_printk(KERN_WARNING, "%sError %s\n",
				fatal_message[fatal], global_message[i]);
	}
}

static inline void global_error(int fatal, u32 errors, int *error_found,
				int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_global_error(fatal, errors);
}

static char *hub_message[7] = {
	"HI Address or Command Parity", "HI Illegal Access",
	"HI Internal Parity", "Out of Range Access",
	"HI Data Parity", "Enhanced Config Access",
	"Hub Interface Target Abort"
};

static void do_hub_error(int fatal, u8 errors)
{
	int i;

	for (i = 0; i < 7; i++) {
		if (errors & (1 << i))
			e752x_printk(KERN_WARNING, "%sError %s\n",
				fatal_message[fatal], hub_message[i]);
	}
}

static inline void hub_error(int fatal, u8 errors, int *error_found,
			int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_hub_error(fatal, errors);
}

static char *membuf_message[4] = {
	"Internal PMWB to DRAM parity",
	"Internal PMWB to System Bus Parity",
	"Internal System Bus or IO to PMWB Parity",
	"Internal DRAM to PMWB Parity"
};

static void do_membuf_error(u8 errors)
{
	int i;

	for (i = 0; i < 4; i++) {
		if (errors & (1 << i))
			e752x_printk(KERN_WARNING, "Non-Fatal Error %s\n",
				membuf_message[i]);
	}
}

static inline void membuf_error(u8 errors, int *error_found, int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_membuf_error(errors);
}

static char *sysbus_message[10] = {
	"Addr or Request Parity",
	"Data Strobe Glitch",
	"Addr Strobe Glitch",
	"Data Parity",
	"Addr Above TOM",
	"Non DRAM Lock Error",
	"MCERR", "BINIT",
	"Memory Parity",
	"IO Subsystem Parity"
};

static void do_sysbus_error(int fatal, u32 errors)
{
	int i;

	for (i = 0; i < 10; i++) {
		if (errors & (1 << i))
			e752x_printk(KERN_WARNING, "%sError System Bus %s\n",
				fatal_message[fatal], sysbus_message[i]);
	}
}

static inline void sysbus_error(int fatal, u32 errors, int *error_found,
				int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_sysbus_error(fatal, errors);
}

static void e752x_check_hub_interface(struct e752x_error_info *info,
				int *error_found, int handle_error)
{
	u8 stat8;

	//pci_read_config_byte(dev,E752X_HI_FERR,&stat8);

	stat8 = info->hi_ferr;

	if (stat8 & 0x7f) {	/* Error, so process */
		stat8 &= 0x7f;

		if (stat8 & 0x2b)
			hub_error(1, stat8 & 0x2b, error_found, handle_error);

		if (stat8 & 0x54)
			hub_error(0, stat8 & 0x54, error_found, handle_error);
	}
	//pci_read_config_byte(dev,E752X_HI_NERR,&stat8);

	stat8 = info->hi_nerr;

	if (stat8 & 0x7f) {	/* Error, so process */
		stat8 &= 0x7f;

		if (stat8 & 0x2b)
			hub_error(1, stat8 & 0x2b, error_found, handle_error);

		if (stat8 & 0x54)
			hub_error(0, stat8 & 0x54, error_found, handle_error);
	}
}

static void e752x_check_sysbus(struct e752x_error_info *info,
			int *error_found, int handle_error)
{
	u32 stat32, error32;

	//pci_read_config_dword(dev,E752X_SYSBUS_FERR,&stat32);
	stat32 = info->sysbus_ferr + (info->sysbus_nerr << 16);

	if (stat32 == 0)
		return;		/* no errors */

	error32 = (stat32 >> 16) & 0x3ff;
	stat32 = stat32 & 0x3ff;

	if (stat32 & 0x087)
		sysbus_error(1, stat32 & 0x087, error_found, handle_error);

	if (stat32 & 0x378)
		sysbus_error(0, stat32 & 0x378, error_found, handle_error);

	if (error32 & 0x087)
		sysbus_error(1, error32 & 0x087, error_found, handle_error);

	if (error32 & 0x378)
		sysbus_error(0, error32 & 0x378, error_found, handle_error);
}

static void e752x_check_membuf(struct e752x_error_info *info,
			int *error_found, int handle_error)
{
	u8 stat8;

	stat8 = info->buf_ferr;

	if (stat8 & 0x0f) {	/* Error, so process */
		stat8 &= 0x0f;
		membuf_error(stat8, error_found, handle_error);
	}

	stat8 = info->buf_nerr;

	if (stat8 & 0x0f) {	/* Error, so process */
		stat8 &= 0x0f;
		membuf_error(stat8, error_found, handle_error);
	}
}

static void e752x_check_dram(struct mem_ctl_info *mci,
			struct e752x_error_info *info, int *error_found,
			int handle_error)
{
	u16 error_one, error_next;

	error_one = info->dram_ferr;
	error_next = info->dram_nerr;

	/* decode and report errors */
	if (error_one & 0x0101)	/* check first error correctable */
		process_ce(mci, error_one, info->dram_sec1_add,
			info->dram_sec1_syndrome, error_found, handle_error);

	if (error_next & 0x0101)	/* check next error correctable */
		process_ce(mci, error_next, info->dram_sec2_add,
			info->dram_sec2_syndrome, error_found, handle_error);

	if (error_one & 0x4040)
		process_ue_no_info_wr(mci, error_found, handle_error);

	if (error_next & 0x4040)
		process_ue_no_info_wr(mci, error_found, handle_error);

	if (error_one & 0x2020)
		process_ded_retry(mci, error_one, info->dram_retr_add,
				error_found, handle_error);

	if (error_next & 0x2020)
		process_ded_retry(mci, error_next, info->dram_retr_add,
				error_found, handle_error);

	if (error_one & 0x0808)
		process_threshold_ce(mci, error_one, error_found, handle_error);

	if (error_next & 0x0808)
		process_threshold_ce(mci, error_next, error_found,
				handle_error);

	if (error_one & 0x0606)
		process_ue(mci, error_one, info->dram_ded_add,
			info->dram_scrb_add, error_found, handle_error);

	if (error_next & 0x0606)
		process_ue(mci, error_next, info->dram_ded_add,
			info->dram_scrb_add, error_found, handle_error);
}

static void e752x_get_error_info(struct mem_ctl_info *mci,
				 struct e752x_error_info *info)
{
	struct pci_dev *dev;
	struct e752x_pvt *pvt;

	memset(info, 0, sizeof(*info));
	pvt = (struct e752x_pvt *)mci->pvt_info;
	dev = pvt->dev_d0f1;
	pci_read_config_dword(dev, E752X_FERR_GLOBAL, &info->ferr_global);

	if (info->ferr_global) {
		pci_read_config_byte(dev, E752X_HI_FERR, &info->hi_ferr);
		pci_read_config_word(dev, E752X_SYSBUS_FERR,
				&info->sysbus_ferr);
		pci_read_config_byte(dev, E752X_BUF_FERR, &info->buf_ferr);
		pci_read_config_word(dev, E752X_DRAM_FERR, &info->dram_ferr);
		pci_read_config_dword(dev, E752X_DRAM_SEC1_ADD,
				&info->dram_sec1_add);
		pci_read_config_word(dev, E752X_DRAM_SEC1_SYNDROME,
				&info->dram_sec1_syndrome);
		pci_read_config_dword(dev, E752X_DRAM_DED_ADD,
				&info->dram_ded_add);
		pci_read_config_dword(dev, E752X_DRAM_SCRB_ADD,
				&info->dram_scrb_add);
		pci_read_config_dword(dev, E752X_DRAM_RETR_ADD,
				&info->dram_retr_add);

		if (info->hi_ferr & 0x7f)
			pci_write_config_byte(dev, E752X_HI_FERR,
					info->hi_ferr);

		if (info->sysbus_ferr)
			pci_write_config_word(dev, E752X_SYSBUS_FERR,
					info->sysbus_ferr);

		if (info->buf_ferr & 0x0f)
			pci_write_config_byte(dev, E752X_BUF_FERR,
					info->buf_ferr);

		if (info->dram_ferr)
			pci_write_bits16(pvt->bridge_ck, E752X_DRAM_FERR,
					 info->dram_ferr, info->dram_ferr);

		pci_write_config_dword(dev, E752X_FERR_GLOBAL,
				info->ferr_global);
	}

	pci_read_config_dword(dev, E752X_NERR_GLOBAL, &info->nerr_global);

	if (info->nerr_global) {
		pci_read_config_byte(dev, E752X_HI_NERR, &info->hi_nerr);
		pci_read_config_word(dev, E752X_SYSBUS_NERR,
				&info->sysbus_nerr);
		pci_read_config_byte(dev, E752X_BUF_NERR, &info->buf_nerr);
		pci_read_config_word(dev, E752X_DRAM_NERR, &info->dram_nerr);
		pci_read_config_dword(dev, E752X_DRAM_SEC2_ADD,
				&info->dram_sec2_add);
		pci_read_config_word(dev, E752X_DRAM_SEC2_SYNDROME,
				&info->dram_sec2_syndrome);

		if (info->hi_nerr & 0x7f)
			pci_write_config_byte(dev, E752X_HI_NERR,
					info->hi_nerr);

		if (info->sysbus_nerr)
			pci_write_config_word(dev, E752X_SYSBUS_NERR,
					info->sysbus_nerr);

		if (info->buf_nerr & 0x0f)
			pci_write_config_byte(dev, E752X_BUF_NERR,
					info->buf_nerr);

		if (info->dram_nerr)
			pci_write_bits16(pvt->bridge_ck, E752X_DRAM_NERR,
					 info->dram_nerr, info->dram_nerr);

		pci_write_config_dword(dev, E752X_NERR_GLOBAL,
				info->nerr_global);
	}
}

static int e752x_process_error_info(struct mem_ctl_info *mci,
				struct e752x_error_info *info,
				int handle_errors)
{
	u32 error32, stat32;
	int error_found;

	error_found = 0;
	error32 = (info->ferr_global >> 18) & 0x3ff;
	stat32 = (info->ferr_global >> 4) & 0x7ff;

	if (error32)
		global_error(1, error32, &error_found, handle_errors);

	if (stat32)
		global_error(0, stat32, &error_found, handle_errors);

	error32 = (info->nerr_global >> 18) & 0x3ff;
	stat32 = (info->nerr_global >> 4) & 0x7ff;

	if (error32)
		global_error(1, error32, &error_found, handle_errors);

	if (stat32)
		global_error(0, stat32, &error_found, handle_errors);

	e752x_check_hub_interface(info, &error_found, handle_errors);
	e752x_check_sysbus(info, &error_found, handle_errors);
	e752x_check_membuf(info, &error_found, handle_errors);
	e752x_check_dram(mci, info, &error_found, handle_errors);
	return error_found;
}

static void e752x_check(struct mem_ctl_info *mci)
{
	struct e752x_error_info info;

	debugf3("%s()\n", __func__);
	e752x_get_error_info(mci, &info);
	e752x_process_error_info(mci, &info, 1);
}

/* Return 1 if dual channel mode is active.  Else return 0. */
static inline int dual_channel_active(u16 ddrcsr)
{