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authorQiuxu Zhuo <qiuxu.zhuo@intel.com>2019-01-30 22:15:17 +0300
committerBorislav Petkov <bp@suse.de>2019-02-02 12:50:59 +0300
commit88a242c9874044740ab990d4fccba8bb90cb924b (patch)
tree4a111eb5c9d93fb3d00c621acf1cd5fc686f4f3b /drivers/edac/skx_common.h
parent84ba10d633f1e8886e62bfd88e1b04ea28310483 (diff)
downloadlinux-88a242c9874044740ab990d4fccba8bb90cb924b.tar.xz
EDAC, skx_common: Separate common code out from skx_edac
Parts of skx_edac can be shared with the Intel 10nm server EDAC driver. Carve out the common parts from skx_edac in preparation to support both skx_edac driver and i10nm_edac drivers. Co-developed-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: James Morse <james.morse@arm.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: linux-edac <linux-edac@vger.kernel.org> Link: https://lkml.kernel.org/r/20190130191519.15393-3-tony.luck@intel.com
Diffstat (limited to 'drivers/edac/skx_common.h')
-rw-r--r--drivers/edac/skx_common.h152
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/edac/skx_common.h b/drivers/edac/skx_common.h
new file mode 100644
index 000000000000..d25374e34d4f
--- /dev/null
+++ b/drivers/edac/skx_common.h
@@ -0,0 +1,152 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Common codes for both the skx_edac driver and Intel 10nm server EDAC driver.
+ * Originally split out from the skx_edac driver.
+ *
+ * Copyright (c) 2018, Intel Corporation.
+ */
+
+#ifndef _SKX_COMM_EDAC_H
+#define _SKX_COMM_EDAC_H
+
+#define MSG_SIZE 1024
+
+/*
+ * Debug macros
+ */
+#define skx_printk(level, fmt, arg...) \
+ edac_printk(level, "skx", fmt, ##arg)
+
+#define skx_mc_printk(mci, level, fmt, arg...) \
+ edac_mc_chipset_printk(mci, level, "skx", fmt, ##arg)
+
+/*
+ * Get a bit field at register value <v>, from bit <lo> to bit <hi>
+ */
+#define GET_BITFIELD(v, lo, hi) \
+ (((v) & GENMASK_ULL((hi), (lo))) >> (lo))
+
+#define SKX_NUM_IMC 2 /* Memory controllers per socket */
+#define SKX_NUM_CHANNELS 3 /* Channels per memory controller */
+#define SKX_NUM_DIMMS 2 /* Max DIMMS per channel */
+
+#define I10NM_NUM_IMC 4
+#define I10NM_NUM_CHANNELS 2
+#define I10NM_NUM_DIMMS 2
+
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define NUM_IMC MAX(SKX_NUM_IMC, I10NM_NUM_IMC)
+#define NUM_CHANNELS MAX(SKX_NUM_CHANNELS, I10NM_NUM_CHANNELS)
+#define NUM_DIMMS MAX(SKX_NUM_DIMMS, I10NM_NUM_DIMMS)
+
+#define IS_DIMM_PRESENT(r) GET_BITFIELD(r, 15, 15)
+#define IS_NVDIMM_PRESENT(r, i) GET_BITFIELD(r, i, i)
+
+/*
+ * Each cpu socket contains some pci devices that provide global
+ * information, and also some that are local to each of the two
+ * memory controllers on the die.
+ */
+struct skx_dev {
+ struct list_head list;
+ u8 bus[4];
+ int seg;
+ struct pci_dev *sad_all;
+ struct pci_dev *util_all;
+ struct pci_dev *uracu; /* for i10nm CPU */
+ u32 mcroute;
+ struct skx_imc {
+ struct mem_ctl_info *mci;
+ struct pci_dev *mdev; /* for i10nm CPU */
+ void __iomem *mbase; /* for i10nm CPU */
+ u8 mc; /* system wide mc# */
+ u8 lmc; /* socket relative mc# */
+ u8 src_id, node_id;
+ struct skx_channel {
+ struct pci_dev *cdev;
+ struct skx_dimm {
+ u8 close_pg;
+ u8 bank_xor_enable;
+ u8 fine_grain_bank;
+ u8 rowbits;
+ u8 colbits;
+ } dimms[NUM_DIMMS];
+ } chan[NUM_CHANNELS];
+ } imc[NUM_IMC];
+};
+
+struct skx_pvt {
+ struct skx_imc *imc;
+};
+
+enum type {
+ SKX,
+ I10NM
+};
+
+enum {
+ INDEX_SOCKET,
+ INDEX_MEMCTRL,
+ INDEX_CHANNEL,
+ INDEX_DIMM,
+ INDEX_MAX
+};
+
+struct decoded_addr {
+ struct skx_dev *dev;
+ u64 addr;
+ int socket;
+ int imc;
+ int channel;
+ u64 chan_addr;
+ int sktways;
+ int chanways;
+ int dimm;
+ int rank;
+ int channel_rank;
+ u64 rank_address;
+ int row;
+ int column;
+ int bank_address;
+ int bank_group;
+};
+
+typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci);
+typedef bool (*skx_decode_f)(struct decoded_addr *res);
+
+int __init skx_adxl_get(void);
+void __exit skx_adxl_put(void);
+void skx_set_decode(skx_decode_f decode);
+
+int skx_get_src_id(struct skx_dev *d, u8 *id);
+int skx_get_node_id(struct skx_dev *d, u8 *id);
+
+int skx_get_all_bus_mappings(unsigned int did, int off, enum type,
+ struct list_head **list);
+
+int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm);
+
+int skx_get_dimm_info(u32 mtr, u32 amap, struct dimm_info *dimm,
+ struct skx_imc *imc, int chan, int dimmno);
+
+int skx_get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc,
+ int chan, int dimmno, const char *mod_str);
+
+int skx_register_mci(struct skx_imc *imc, struct pci_dev *pdev,
+ const char *ctl_name, const char *mod_str,
+ get_dimm_config_f get_dimm_config);
+
+int skx_mce_check_error(struct notifier_block *nb, unsigned long val,
+ void *data);
+
+void skx_remove(void);
+
+#ifdef CONFIG_EDAC_DEBUG
+void setup_skx_debug(const char *dirname);
+void teardown_skx_debug(void);
+#else
+static inline void setup_skx_debug(const char *dirname) {}
+static inline void teardown_skx_debug(void) {}
+#endif /*CONFIG_EDAC_DEBUG*/
+
+#endif /* _SKX_COMM_EDAC_H */