Attachment 246791 Details for Bug 295501 – test patch

[patch] test patch

edac-backport_i3000_driver.patch (text/plain), 14.85 KB, created by Aristeu Rozanski on 2007-11-02 14:57:31 UTC

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Creator: Aristeu Rozanski

Created: 2007-11-02 14:57:31 UTC

Size: 14.85 KB

patch

obsolete

>---
> drivers/edac/Kconfig      |    7 
> drivers/edac/Makefile     |    1 
> drivers/edac/i3000_edac.c |  491 ++++++++++++++++++++++++++++++++++++++++++++++
> include/linux/pci_ids.h   |    1 
> 4 files changed, 500 insertions(+)
>
>--- tree.orig/drivers/edac/Kconfig	2007-10-31 14:52:08.000000000 -0400
>+++ tree/drivers/edac/Kconfig	2007-10-31 16:06:06.000000000 -0400
>@@ -83,6 +83,13 @@ config EDAC_I82875P
> 	  Support for error detection and correction on the Intel
> 	  DP82785P and E7210 server chipsets.
> 
>+config EDAC_I3000
>+	tristate "Intel 3000/3010"
>+	depends on EDAC_MM_EDAC && PCI && X86_32
>+	help
>+	  Support for error detection and correction on the Intel
>+	  3000 and 3010 server chipsets.
>+
> config EDAC_I82860
> 	tristate "Intel 82860"
> 	depends on EDAC_MM_EDAC && PCI && X86_32
>--- tree.orig/drivers/edac/Makefile	2007-10-31 16:05:53.000000000 -0400
>+++ tree/drivers/edac/Makefile	2007-10-31 16:06:06.000000000 -0400
>@@ -13,6 +13,7 @@ obj-$(CONFIG_EDAC_AMD76X)		+= amd76x_eda
> obj-$(CONFIG_EDAC_E7XXX)		+= e7xxx_edac.o
> obj-$(CONFIG_EDAC_E752X)		+= e752x_edac.o
> obj-$(CONFIG_EDAC_I82875P)		+= i82875p_edac.o
>+obj-$(CONFIG_EDAC_I3000)		+= i3000_edac.o
> obj-$(CONFIG_EDAC_I82860)		+= i82860_edac.o
> obj-$(CONFIG_EDAC_K8)			+= k8_edac.o
> obj-$(CONFIG_EDAC_R82600)		+= r82600_edac.o
>--- /dev/null	1970-01-01 00:00:00.000000000 +0000
>+++ tree/drivers/edac/i3000_edac.c	2007-11-01 11:10:20.000000000 -0400
>@@ -0,0 +1,491 @@
>+/*
>+ * Intel 3000/3010 Memory Controller kernel module
>+ * Copyright (C) 2007 Akamai Technologies, Inc.
>+ * Shamelessly copied from:
>+ * 	Intel D82875P Memory Controller kernel module
>+ * 	(C) 2003 Linux Networx (http://lnxi.com)
>+ *
>+ * This file may be distributed under the terms of the
>+ * GNU General Public License.
>+ */
>+
>+#include <linux/module.h>
>+#include <linux/init.h>
>+#include <linux/pci.h>
>+#include <linux/pci_ids.h>
>+#include <linux/slab.h>
>+#include "edac_mc.h"
>+
>+#define I3000_REVISION		"1.1"
>+
>+#define EDAC_MOD_STR		"i3000_edac"
>+
>+#define I3000_RANKS		8
>+#define I3000_RANKS_PER_CHANNEL	4
>+#define I3000_CHANNELS		2
>+
>+/* Intel 3000 register addresses - device 0 function 0 - DRAM Controller */
>+
>+#define I3000_MCHBAR		0x44	/* MCH Memory Mapped Register BAR */
>+#define I3000_MCHBAR_MASK	0xffffc000
>+#define I3000_MMR_WINDOW_SIZE	16384
>+
>+#define I3000_EDEAP		0x70	/* Extended DRAM Error Address Pointer (8b)
>+					 *
>+					 * 7:1   reserved
>+					 * 0     bit 32 of address
>+					 */
>+#define I3000_DEAP		0x58	/* DRAM Error Address Pointer (32b)
>+					 *
>+					 * 31:7  address
>+					 * 6:1   reserved
>+					 * 0     Error channel 0/1
>+					 */
>+#define I3000_DEAP_GRAIN	(1 << 7)
>+#define I3000_DEAP_PFN(edeap, deap)	((((edeap) & 1) << (32 - PAGE_SHIFT)) | \
>+					((deap) >> PAGE_SHIFT))
>+#define I3000_DEAP_OFFSET(deap)		((deap) & ~(I3000_DEAP_GRAIN-1) & ~PAGE_MASK)
>+#define I3000_DEAP_CHANNEL(deap)	((deap) & 1)
>+
>+#define I3000_DERRSYN		0x5c	/* DRAM Error Syndrome (8b)
>+					 *
>+					 *  7:0  DRAM ECC Syndrome
>+					 */
>+
>+#define I3000_ERRSTS		0xc8	/* Error Status Register (16b)
>+					 *
>+					 * 15:12 reserved
>+					 * 11    MCH Thermal Sensor Event for SMI/SCI/SERR
>+					 * 10    reserved
>+					 *  9    LOCK to non-DRAM Memory Flag (LCKF)
>+					 *  8    Received Refresh Timeout Flag (RRTOF)
>+					 *  7:2  reserved
>+					 *  1    Multiple-bit DRAM ECC Error Flag (DMERR)
>+					 *  0    Single-bit DRAM ECC Error Flag (DSERR)
>+					 */
>+#define I3000_ERRSTS_BITS	0x0b03	/* bits which indicate errors */
>+#define I3000_ERRSTS_UE		0x0002
>+#define I3000_ERRSTS_CE		0x0001
>+
>+#define I3000_ERRCMD		0xca	/* Error Command (16b)
>+					 *
>+					 * 15:12 reserved
>+					 * 11    SERR on MCH Thermal Sensor Event (TSESERR)
>+					 * 10    reserved
>+					 *  9    SERR on LOCK to non-DRAM Memory (LCKERR)
>+					 *  8    SERR on DRAM Refresh Timeout (DRTOERR)
>+					 *  7:2  reserved
>+					 *  1    SERR Multiple-Bit DRAM ECC Error (DMERR)
>+					 *  0    SERR on Single-Bit ECC Error (DSERR)
>+					 */
>+
>+/* Intel  MMIO register space - device 0 function 0 - MMR space */
>+
>+#define I3000_DRB_SHIFT 25	/* 32MiB grain */
>+
>+#define I3000_C0DRB		0x100	/* Channel 0 DRAM Rank Boundary (8b x 4)
>+					 *
>+					 * 7:0   Channel 0 DRAM Rank Boundary Address
>+					 */
>+#define I3000_C1DRB		0x180	/* Channel 1 DRAM Rank Boundary (8b x 4)
>+					 *
>+					 * 7:0   Channel 1 DRAM Rank Boundary Address
>+					 */
>+
>+#define I3000_C0DRA		0x108	/* Channel 0 DRAM Rank Attribute (8b x 2)
>+					 *
>+					 * 7     reserved
>+					 * 6:4   DRAM odd Rank Attribute
>+					 * 3     reserved
>+					 * 2:0   DRAM even Rank Attribute
>+					 *
>+					 * Each attribute defines the page
>+					 * size of the corresponding rank:
>+					 *     000: unpopulated
>+					 *     001: reserved
>+					 *     010: 4 KB
>+					 *     011: 8 KB
>+					 *     100: 16 KB
>+					 *     Others: reserved
>+					 */
>+#define I3000_C1DRA		0x188	/* Channel 1 DRAM Rank Attribute (8b x 2) */
>+#define ODD_RANK_ATTRIB(dra) (((dra) & 0x70) >> 4)
>+#define EVEN_RANK_ATTRIB(dra) ((dra) & 0x07)
>+
>+#define I3000_C0DRC0		0x120	/* DRAM Controller Mode 0 (32b)
>+					 *
>+					 * 31:30 reserved
>+					 * 29    Initialization Complete (IC)
>+					 * 28:11 reserved
>+					 * 10:8  Refresh Mode Select (RMS)
>+					 * 7     reserved
>+					 * 6:4   Mode Select (SMS)
>+					 * 3:2   reserved
>+					 * 1:0   DRAM Type (DT)
>+					 */
>+
>+#define I3000_C0DRC1		0x124	/* DRAM Controller Mode 1 (32b)
>+					 *
>+					 * 31    Enhanced Addressing Enable (ENHADE)
>+					 * 30:0  reserved
>+					 */
>+
>+enum i3000p_chips {
>+	I3000 = 0,
>+};
>+
>+struct i3000_dev_info {
>+	const char *ctl_name;
>+};
>+
>+struct i3000_error_info {
>+	u16 errsts;
>+	u8 derrsyn;
>+	u8 edeap;
>+	u32 deap;
>+	u16 errsts2;
>+};
>+
>+static const struct i3000_dev_info i3000_devs[] = {
>+	[I3000] = {
>+		.ctl_name = "i3000"},
>+};
>+
>+static struct pci_dev *mci_pdev;
>+static int i3000_registered = 1;
>+static struct edac_pci_ctl_info *i3000_pci;
>+
>+static void i3000_get_error_info(struct mem_ctl_info *mci,
>+				 struct i3000_error_info *info)
>+{
>+	struct pci_dev *pdev;
>+
>+	pdev = to_pci_dev(mci->dev);
>+
>+	/*
>+	 * This is a mess because there is no atomic way to read all the
>+	 * registers at once and the registers can transition from CE being
>+	 * overwritten by UE.
>+	 */
>+	pci_read_config_word(pdev, I3000_ERRSTS, &info->errsts);
>+	if (!(info->errsts & I3000_ERRSTS_BITS))
>+		return;
>+	pci_read_config_byte(pdev, I3000_EDEAP, &info->edeap);
>+	pci_read_config_dword(pdev, I3000_DEAP, &info->deap);
>+	pci_read_config_byte(pdev, I3000_DERRSYN, &info->derrsyn);
>+	pci_read_config_word(pdev, I3000_ERRSTS, &info->errsts2);
>+
>+	/*
>+	 * If the error is the same for both reads then the first set
>+	 * of reads is valid.  If there is a change then there is a CE
>+	 * with no info and the second set of reads is valid and
>+	 * should be UE info.
>+	 */
>+	if ((info->errsts ^ info->errsts2) & I3000_ERRSTS_BITS) {
>+		pci_read_config_byte(pdev, I3000_EDEAP, &info->edeap);
>+		pci_read_config_dword(pdev, I3000_DEAP, &info->deap);
>+		pci_read_config_byte(pdev, I3000_DERRSYN, &info->derrsyn);
>+	}
>+
>+	/* Clear any error bits.
>+	 * (Yes, we really clear bits by writing 1 to them.)
>+	 */
>+	pci_write_bits16(pdev, I3000_ERRSTS, I3000_ERRSTS_BITS,
>+			 I3000_ERRSTS_BITS);
>+}
>+
>+static int i3000_process_error_info(struct mem_ctl_info *mci,
>+				struct i3000_error_info *info,
>+				int handle_errors)
>+{
>+	int row, multi_chan;
>+	int pfn, offset, channel;
>+
>+	multi_chan = mci->csrows[0].nr_channels - 1;
>+
>+	if (!(info->errsts & I3000_ERRSTS_BITS))
>+		return 0;
>+
>+	if (!handle_errors)
>+		return 1;
>+
>+	if ((info->errsts ^ info->errsts2) & I3000_ERRSTS_BITS) {
>+		edac_mc_handle_ce_no_info(mci, "UE overwrote CE");
>+		info->errsts = info->errsts2;
>+	}
>+
>+	pfn = I3000_DEAP_PFN(info->edeap, info->deap);
>+	offset = I3000_DEAP_OFFSET(info->deap);
>+	channel = I3000_DEAP_CHANNEL(info->deap);
>+
>+	row = edac_mc_find_csrow_by_page(mci, pfn);
>+
>+	if (info->errsts & I3000_ERRSTS_UE)
>+		edac_mc_handle_ue(mci, pfn, offset, row, "i3000 UE");
>+	else
>+		edac_mc_handle_ce(mci, pfn, offset, info->derrsyn, row,
>+				multi_chan ? channel : 0, "i3000 CE");
>+
>+	return 1;
>+}
>+
>+static void i3000_check(struct mem_ctl_info *mci)
>+{
>+	struct i3000_error_info info;
>+
>+	debugf1("MC%d: %s()\n", mci->mc_idx, __func__);
>+	i3000_get_error_info(mci, &info);
>+	i3000_process_error_info(mci, &info, 1);
>+}
>+
>+static int i3000_is_interleaved(const unsigned char *c0dra,
>+				const unsigned char *c1dra,
>+				const unsigned char *c0drb,
>+				const unsigned char *c1drb)
>+{
>+	int i;
>+
>+	/* If the channels aren't populated identically then
>+	 * we're not interleaved.
>+	 */
>+	for (i = 0; i < I3000_RANKS_PER_CHANNEL / 2; i++)
>+		if (ODD_RANK_ATTRIB(c0dra[i]) != ODD_RANK_ATTRIB(c1dra[i]) ||
>+			EVEN_RANK_ATTRIB(c0dra[i]) !=
>+						EVEN_RANK_ATTRIB(c1dra[i]))
>+			return 0;
>+
>+	/* If the rank boundaries for the two channels are different
>+	 * then we're not interleaved.
>+	 */
>+	for (i = 0; i < I3000_RANKS_PER_CHANNEL; i++)
>+		if (c0drb[i] != c1drb[i])
>+			return 0;
>+
>+	return 1;
>+}
>+
>+static int i3000_probe1(struct pci_dev *pdev, int dev_idx)
>+{
>+	int rc;
>+	int i;
>+	struct mem_ctl_info *mci = NULL;
>+	unsigned long last_cumul_size;
>+	int interleaved, nr_channels;
>+	unsigned char dra[I3000_RANKS / 2], drb[I3000_RANKS];
>+	unsigned char *c0dra = dra, *c1dra = &dra[I3000_RANKS_PER_CHANNEL / 2];
>+	unsigned char *c0drb = drb, *c1drb = &drb[I3000_RANKS_PER_CHANNEL];
>+	unsigned long mchbar;
>+	void __iomem *window;
>+
>+	debugf0("MC: %s()\n", __func__);
>+
>+	pci_read_config_dword(pdev, I3000_MCHBAR, (u32 *) & mchbar);
>+	mchbar &= I3000_MCHBAR_MASK;
>+	window = ioremap_nocache(mchbar, I3000_MMR_WINDOW_SIZE);
>+	if (!window) {
>+		printk(KERN_ERR "i3000: cannot map mmio space at 0x%lx\n",
>+			mchbar);
>+		return -ENODEV;
>+	}
>+
>+	c0dra[0] = readb(window + I3000_C0DRA + 0);	/* ranks 0,1 */
>+	c0dra[1] = readb(window + I3000_C0DRA + 1);	/* ranks 2,3 */
>+	c1dra[0] = readb(window + I3000_C1DRA + 0);	/* ranks 0,1 */
>+	c1dra[1] = readb(window + I3000_C1DRA + 1);	/* ranks 2,3 */
>+
>+	for (i = 0; i < I3000_RANKS_PER_CHANNEL; i++) {
>+		c0drb[i] = readb(window + I3000_C0DRB + i);
>+		c1drb[i] = readb(window + I3000_C1DRB + i);
>+	}
>+
>+	iounmap(window);
>+
>+	/* Figure out how many channels we have.
>+	 *
>+	 * If we have what the datasheet calls "asymmetric channels"
>+	 * (essentially the same as what was called "virtual single
>+	 * channel mode" in the i82875) then it's a single channel as
>+	 * far as EDAC is concerned.
>+	 */
>+	interleaved = i3000_is_interleaved(c0dra, c1dra, c0drb, c1drb);
>+	nr_channels = interleaved ? 2 : 1;
>+	mci = edac_mc_alloc(0, I3000_RANKS / nr_channels, nr_channels);
>+	if (!mci)
>+		return -ENOMEM;
>+
>+	debugf3("MC: %s(): init mci\n", __func__);
>+
>+	mci->dev = &pdev->dev;
>+	mci->mtype_cap = MEM_FLAG_DDR2;
>+
>+	mci->edac_ctl_cap = EDAC_FLAG_SECDED;
>+	mci->edac_cap = EDAC_FLAG_SECDED;
>+
>+	mci->mod_name = EDAC_MOD_STR;
>+	mci->mod_ver = I3000_REVISION;
>+	mci->ctl_name = i3000_devs[dev_idx].ctl_name;
>+	mci->edac_check = i3000_check;
>+	mci->ctl_page_to_phys = NULL;
>+
>+	/*
>+	 * The dram rank boundary (DRB) reg values are boundary addresses
>+	 * for each DRAM rank with a granularity of 32MB.  DRB regs are
>+	 * cumulative; the last one will contain the total memory
>+	 * contained in all ranks.
>+	 *
>+	 * If we're in interleaved mode then we're only walking through
>+	 * the ranks of controller 0, so we double all the values we see.
>+	 */
>+	for (last_cumul_size = i = 0; i < mci->nr_csrows; i++) {
>+		u8 value;
>+		u32 cumul_size;
>+		struct csrow_info *csrow = &mci->csrows[i];
>+
>+		value = drb[i];
>+		cumul_size = value << (I3000_DRB_SHIFT - PAGE_SHIFT);
>+		if (interleaved)
>+			cumul_size <<= 1;
>+		debugf3("MC: %s(): (%d) cumul_size 0x%x\n",
>+			__func__, i, cumul_size);
>+		if (cumul_size == last_cumul_size) {
>+			csrow->mtype = MEM_EMPTY;
>+			continue;
>+		}
>+
>+		csrow->first_page = last_cumul_size;
>+		csrow->last_page = cumul_size - 1;
>+		csrow->nr_pages = cumul_size - last_cumul_size;
>+		last_cumul_size = cumul_size;
>+		csrow->grain = I3000_DEAP_GRAIN;
>+		csrow->mtype = MEM_DDR2;
>+		csrow->dtype = DEV_UNKNOWN;
>+		csrow->edac_mode = EDAC_UNKNOWN;
>+	}
>+
>+	/* Clear any error bits.
>+	 * (Yes, we really clear bits by writing 1 to them.)
>+	 */
>+	pci_write_bits16(pdev, I3000_ERRSTS, I3000_ERRSTS_BITS,
>+			 I3000_ERRSTS_BITS);
>+
>+	rc = -ENODEV;
>+	if (edac_mc_add_mc(mci, 0)) {
>+		debugf3("MC: %s(): failed edac_mc_add_mc()\n", __func__);
>+		goto fail;
>+	}
>+
>+	/* get this far and it's successful */
>+	debugf3("MC: %s(): success\n", __func__);
>+	return 0;
>+
>+      fail:
>+	if (mci)
>+		edac_mc_free(mci);
>+
>+	return rc;
>+}
>+
>+/* returns count (>= 0), or negative on error */
>+static int __devinit i3000_init_one(struct pci_dev *pdev,
>+				const struct pci_device_id *ent)
>+{
>+	int rc;
>+
>+	debugf0("MC: %s()\n", __func__);
>+
>+	if (pci_enable_device(pdev) < 0)
>+		return -EIO;
>+
>+	rc = i3000_probe1(pdev, ent->driver_data);
>+	if (mci_pdev == NULL)
>+		mci_pdev = pci_dev_get(pdev);
>+
>+	return rc;
>+}
>+
>+static void __devexit i3000_remove_one(struct pci_dev *pdev)
>+{
>+	struct mem_ctl_info *mci;
>+
>+	debugf0("%s()\n", __func__);
>+
>+	if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
>+		return;
>+
>+	edac_mc_free(mci);
>+}
>+
>+static const struct pci_device_id i3000_pci_tbl[] __devinitdata = {
>+	{
>+	 PCI_VEND_DEV(INTEL, 3000_HB), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
>+	 I3000},
>+	{
>+	 0,
>+	 }			/* 0 terminated list. */
>+};
>+
>+MODULE_DEVICE_TABLE(pci, i3000_pci_tbl);
>+
>+static struct pci_driver i3000_driver = {
>+	.name = EDAC_MOD_STR,
>+	.probe = i3000_init_one,
>+	.remove = __devexit_p(i3000_remove_one),
>+	.id_table = i3000_pci_tbl,
>+};
>+
>+static int __init i3000_init(void)
>+{
>+	int pci_rc;
>+
>+	debugf3("MC: %s()\n", __func__);
>+	pci_rc = pci_register_driver(&i3000_driver);
>+	if (pci_rc < 0)
>+		goto fail0;
>+
>+	if (mci_pdev == NULL) {
>+		i3000_registered = 0;
>+		mci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
>+					PCI_DEVICE_ID_INTEL_3000_HB, NULL);
>+		if (!mci_pdev) {
>+			debugf0("i3000 pci_get_device fail\n");
>+			pci_rc = -ENODEV;
>+			goto fail1;
>+		}
>+
>+		pci_rc = i3000_init_one(mci_pdev, i3000_pci_tbl);
>+		if (pci_rc < 0) {
>+			debugf0("i3000 init fail\n");
>+			pci_rc = -ENODEV;
>+			goto fail1;
>+		}
>+	}
>+
>+	return 0;
>+
>+fail1:
>+	pci_unregister_driver(&i3000_driver);
>+
>+fail0:
>+	if (mci_pdev)
>+		pci_dev_put(mci_pdev);
>+
>+	return pci_rc;
>+}
>+
>+static void __exit i3000_exit(void)
>+{
>+	debugf3("MC: %s()\n", __func__);
>+
>+	pci_unregister_driver(&i3000_driver);
>+	if (!i3000_registered) {
>+		i3000_remove_one(mci_pdev);
>+		pci_dev_put(mci_pdev);
>+	}
>+}
>+
>+module_init(i3000_init);
>+module_exit(i3000_exit);
>+
>+MODULE_LICENSE("GPL");
>+MODULE_AUTHOR("Akamai Technologies Arthur Ulfeldt/Jason Uhlenkott");
>+MODULE_DESCRIPTION("MC support for Intel 3000 memory hub controllers");
>--- tree.orig/include/linux/pci_ids.h	2007-10-31 14:52:08.000000000 -0400
>+++ tree/include/linux/pci_ids.h	2007-10-31 16:06:06.000000000 -0400
>@@ -2204,6 +2204,7 @@
> #define PCI_DEVICE_ID_INTEL_82915GM_IG	0x2592
> #define PCI_DEVICE_ID_INTEL_82945G_HB	0x2770
> #define PCI_DEVICE_ID_INTEL_82945G_IG	0x2772
>+#define PCI_DEVICE_ID_INTEL_3000_HB	0x2778
> #define PCI_DEVICE_ID_INTEL_82945GM_HB	0x27A0
> #define PCI_DEVICE_ID_INTEL_82945GM_IG	0x27A2
> #define PCI_DEVICE_ID_INTEL_82945GME_IG 0x27AE

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Attachments on bug 295501: 246791 | 263601