diff options
| -rw-r--r-- | drivers/edac/i5100_edac.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c index 33c5c8e663f2..0a0345bd7432 100644 --- a/drivers/edac/i5100_edac.c +++ b/drivers/edac/i5100_edac.c @@ -68,6 +68,14 @@ I5100_FERR_NF_MEM_M1ERR_MASK) #define I5100_NERR_NF_MEM 0xa4 /* MC Next Non-Fatal Errors */ #define I5100_EMASK_MEM 0xa8 /* MC Error Mask Register */ +#define I5100_MEM0EINJMSK0 0x200 /* Injection Mask0 Register Channel 0 */ +#define I5100_MEM1EINJMSK0 0x208 /* Injection Mask0 Register Channel 1 */ +#define I5100_MEMXEINJMSK0_EINJEN (1 << 27) +#define I5100_MEM0EINJMSK1 0x204 /* Injection Mask1 Register Channel 0 */ +#define I5100_MEM1EINJMSK1 0x206 /* Injection Mask1 Register Channel 1 */ + +/* Device 19, Function 0 */ +#define I5100_DINJ0 0x9a /* device 21 and 22, func 0 */ #define I5100_MTR_0 0x154 /* Memory Technology Registers 0-3 */ @@ -344,6 +352,14 @@ struct i5100_priv { struct delayed_work i5100_scrubbing; int scrub_enable; + + /* Error injection */ + u8 inject_channel; + u8 inject_hlinesel; + u8 inject_deviceptr1; + u8 inject_deviceptr2; + u16 inject_eccmask1; + u16 inject_eccmask2; }; /* map a rank/chan to a slot number on the mainboard */ @@ -864,6 +880,70 @@ static void i5100_init_csrows(struct mem_ctl_info *mci) } } +/**************************************************************************** + * Error injection routines + ****************************************************************************/ + +static void i5100_do_inject(struct mem_ctl_info *mci) +{ + struct i5100_priv *priv = mci->pvt_info; + u32 mask0; + u16 mask1; + + /* MEM[1:0]EINJMSK0 + * 31 - ADDRMATCHEN + * 29:28 - HLINESEL + * 00 Reserved + * 01 Lower half of cache line + * 10 Upper half of cache line + * 11 Both upper and lower parts of cache line + * 27 - EINJEN + * 25:19 - XORMASK1 for deviceptr1 + * 9:5 - SEC2RAM for deviceptr2 + * 4:0 - FIR2RAM for deviceptr1 + */ + mask0 = ((priv->inject_hlinesel & 0x3) << 28) | + I5100_MEMXEINJMSK0_EINJEN | + ((priv->inject_eccmask1 & 0xffff) << 10) | + ((priv->inject_deviceptr2 & 0x1f) << 5) | + (priv->inject_deviceptr1 & 0x1f); + + /* MEM[1:0]EINJMSK1 + * 15:0 - XORMASK2 for deviceptr2 + */ + mask1 = priv->inject_eccmask2; + + if (priv->inject_channel == 0) { + pci_write_config_dword(priv->mc, I5100_MEM0EINJMSK0, mask0); + pci_write_config_word(priv->mc, I5100_MEM0EINJMSK1, mask1); + } else { + pci_write_config_dword(priv->mc, I5100_MEM1EINJMSK0, mask0); + pci_write_config_word(priv->mc, I5100_MEM1EINJMSK1, mask1); + } + + /* Error Injection Response Function + * Intel 5100 Memory Controller Hub Chipset (318378) datasheet + * hints about this register but carry no data about them. All + * data regarding device 19 is based on experimentation and the + * Intel 7300 Chipset Memory Controller Hub (318082) datasheet + * which appears to be accurate for the i5100 in this area. + * + * The injection code don't work without setting this register. + * The register needs to be flipped off then on else the hardware + * will only preform the first injection. + * + * Stop condition bits 7:4 + * 1010 - Stop after one injection + * 1011 - Never stop injecting faults + * + * Start condition bits 3:0 + * 1010 - Never start + * 1011 - Start immediately + */ + pci_write_config_byte(priv->einj, I5100_DINJ0, 0xaa); + pci_write_config_byte(priv->einj, I5100_DINJ0, 0xab); +} + static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id) { int rc; @@ -993,6 +1073,13 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id) mci->set_sdram_scrub_rate = i5100_set_scrub_rate; mci->get_sdram_scrub_rate = i5100_get_scrub_rate; + priv->inject_channel = 0; + priv->inject_hlinesel = 0; + priv->inject_deviceptr1 = 0; + priv->inject_deviceptr2 = 0; + priv->inject_eccmask1 = 0; + priv->inject_eccmask2 = 0; + i5100_init_csrows(mci); /* this strange construction seems to be in every driver, dunno why */ |