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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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666db563d3
Originally the mpc85xx-pci-edac driver bound directly to the PCI
controller node.
Commit
905e75c46d ("powerpc/fsl-pci: Unify pci/pcie initialization code")
turned the PCI controller code into a platform device. Since we can't
have two drivers binding to the same device, the EDAC code was changed
to be called into as a library-style submodule. However, this doesn't
work if the EDAC driver is built as a module.
Commit
8d8fcba6d1ea ("EDAC: Rip out the edac_subsys reference counting")
exposed another problem with this approach -- mpc85xx_pci_err_probe()
was being called in the same early boot phase that the PCI controller
is initialized, rather than in the device_initcall phase that the EDAC
layer expects. This caused a crash on boot.
To fix this, the PCI controller code now creates a child platform device
specifically for EDAC, which the mpc85xx-pci-edac driver binds to.
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Jia Hongtao <B38951@freescale.com>
Cc: Jiri Kosina <jkosina@suse.com>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Masanari Iida <standby24x7@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Rob Herring <robh@kernel.org>
Link: http://lkml.kernel.org/r/1449774432-18593-1-git-send-email-scottwood@freescale.com
Signed-off-by: Borislav Petkov <bp@suse.de>
141 lines
5.2 KiB
C
141 lines
5.2 KiB
C
/*
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* MPC85xx/86xx PCI Express structure define
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*
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* Copyright 2007,2011 Freescale Semiconductor, Inc
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#ifdef __KERNEL__
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#ifndef __POWERPC_FSL_PCI_H
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#define __POWERPC_FSL_PCI_H
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struct platform_device;
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/* FSL PCI controller BRR1 register */
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#define PCI_FSL_BRR1 0xbf8
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#define PCI_FSL_BRR1_VER 0xffff
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#define PCIE_LTSSM 0x0404 /* PCIE Link Training and Status */
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#define PCIE_LTSSM_L0 0x16 /* L0 state */
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#define PCIE_IP_REV_2_2 0x02080202 /* PCIE IP block version Rev2.2 */
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#define PCIE_IP_REV_3_0 0x02080300 /* PCIE IP block version Rev3.0 */
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#define PIWAR_EN 0x80000000 /* Enable */
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#define PIWAR_PF 0x20000000 /* prefetch */
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#define PIWAR_TGI_LOCAL 0x00f00000 /* target - local memory */
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#define PIWAR_READ_SNOOP 0x00050000
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#define PIWAR_WRITE_SNOOP 0x00005000
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#define PIWAR_SZ_MASK 0x0000003f
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#define PEX_PMCR_PTOMR 0x1
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#define PEX_PMCR_EXL2S 0x2
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#define PME_DISR_EN_PTOD 0x00008000
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#define PME_DISR_EN_ENL23D 0x00002000
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#define PME_DISR_EN_EXL23D 0x00001000
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/* PCI/PCI Express outbound window reg */
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struct pci_outbound_window_regs {
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__be32 potar; /* 0x.0 - Outbound translation address register */
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__be32 potear; /* 0x.4 - Outbound translation extended address register */
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__be32 powbar; /* 0x.8 - Outbound window base address register */
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u8 res1[4];
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__be32 powar; /* 0x.10 - Outbound window attributes register */
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u8 res2[12];
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};
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/* PCI/PCI Express inbound window reg */
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struct pci_inbound_window_regs {
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__be32 pitar; /* 0x.0 - Inbound translation address register */
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u8 res1[4];
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__be32 piwbar; /* 0x.8 - Inbound window base address register */
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__be32 piwbear; /* 0x.c - Inbound window base extended address register */
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__be32 piwar; /* 0x.10 - Inbound window attributes register */
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u8 res2[12];
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};
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/* PCI/PCI Express IO block registers for 85xx/86xx */
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struct ccsr_pci {
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__be32 config_addr; /* 0x.000 - PCI/PCIE Configuration Address Register */
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__be32 config_data; /* 0x.004 - PCI/PCIE Configuration Data Register */
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__be32 int_ack; /* 0x.008 - PCI Interrupt Acknowledge Register */
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__be32 pex_otb_cpl_tor; /* 0x.00c - PCIE Outbound completion timeout register */
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__be32 pex_conf_tor; /* 0x.010 - PCIE configuration timeout register */
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__be32 pex_config; /* 0x.014 - PCIE CONFIG Register */
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__be32 pex_int_status; /* 0x.018 - PCIE interrupt status */
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u8 res2[4];
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__be32 pex_pme_mes_dr; /* 0x.020 - PCIE PME and message detect register */
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__be32 pex_pme_mes_disr; /* 0x.024 - PCIE PME and message disable register */
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__be32 pex_pme_mes_ier; /* 0x.028 - PCIE PME and message interrupt enable register */
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__be32 pex_pmcr; /* 0x.02c - PCIE power management command register */
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u8 res3[3016];
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__be32 block_rev1; /* 0x.bf8 - PCIE Block Revision register 1 */
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__be32 block_rev2; /* 0x.bfc - PCIE Block Revision register 2 */
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/* PCI/PCI Express outbound window 0-4
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* Window 0 is the default window and is the only window enabled upon reset.
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* The default outbound register set is used when a transaction misses
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* in all of the other outbound windows.
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*/
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struct pci_outbound_window_regs pow[5];
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u8 res14[96];
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struct pci_inbound_window_regs pmit; /* 0xd00 - 0xd9c Inbound MSI */
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u8 res6[96];
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/* PCI/PCI Express inbound window 3-0
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* inbound window 1 supports only a 32-bit base address and does not
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* define an inbound window base extended address register.
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*/
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struct pci_inbound_window_regs piw[4];
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__be32 pex_err_dr; /* 0x.e00 - PCI/PCIE error detect register */
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u8 res21[4];
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__be32 pex_err_en; /* 0x.e08 - PCI/PCIE error interrupt enable register */
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u8 res22[4];
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__be32 pex_err_disr; /* 0x.e10 - PCI/PCIE error disable register */
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u8 res23[12];
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__be32 pex_err_cap_stat; /* 0x.e20 - PCI/PCIE error capture status register */
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u8 res24[4];
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__be32 pex_err_cap_r0; /* 0x.e28 - PCIE error capture register 0 */
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__be32 pex_err_cap_r1; /* 0x.e2c - PCIE error capture register 0 */
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__be32 pex_err_cap_r2; /* 0x.e30 - PCIE error capture register 0 */
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__be32 pex_err_cap_r3; /* 0x.e34 - PCIE error capture register 0 */
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u8 res_e38[200];
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__be32 pdb_stat; /* 0x.f00 - PCIE Debug Status */
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u8 res_f04[16];
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__be32 pex_csr0; /* 0x.f14 - PEX Control/Status register 0*/
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#define PEX_CSR0_LTSSM_MASK 0xFC
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#define PEX_CSR0_LTSSM_SHIFT 2
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#define PEX_CSR0_LTSSM_L0 0x11
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__be32 pex_csr1; /* 0x.f18 - PEX Control/Status register 1*/
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u8 res_f1c[228];
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};
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extern int fsl_add_bridge(struct platform_device *pdev, int is_primary);
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extern void fsl_pcibios_fixup_bus(struct pci_bus *bus);
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extern void fsl_pcibios_fixup_phb(struct pci_controller *phb);
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extern int mpc83xx_add_bridge(struct device_node *dev);
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u64 fsl_pci_immrbar_base(struct pci_controller *hose);
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extern struct device_node *fsl_pci_primary;
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#ifdef CONFIG_PCI
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void fsl_pci_assign_primary(void);
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#else
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static inline void fsl_pci_assign_primary(void) {}
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#endif
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#ifdef CONFIG_FSL_PCI
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extern int fsl_pci_mcheck_exception(struct pt_regs *);
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#else
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static inline int fsl_pci_mcheck_exception(struct pt_regs *regs) {return 0; }
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#endif
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#endif /* __POWERPC_FSL_PCI_H */
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#endif /* __KERNEL__ */
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