path: root/usr/src/uts/common/sys/pcie_impl.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef	_SYS_PCIE_IMPL_H
#define	_SYS_PCIE_IMPL_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#ifdef	__cplusplus
extern "C" {
#endif

#include <sys/pcie.h>

#define	PCI_GET_BDF(dip)	\
	PCIE_DIP2BUS(dip)->bus_bdf
#define	PCI_GET_SEC_BUS(dip)	\
	PCIE_DIP2BUS(dip)->bus_bdg_secbus
#define	PCI_GET_PCIE2PCI_SECBUS(dip) \
	PCIE_DIP2BUS(dip)->bus_pcie2pci_secbus

#define	DEVI_PORT_TYPE_PCI \
	((PCI_CLASS_BRIDGE << 16) | (PCI_BRIDGE_PCI << 8) | \
	PCI_BRIDGE_PCI_IF_PCI2PCI)

#define	PCIE_DIP2BUS(dip) \
	(ndi_port_type(dip, B_TRUE, DEVI_PORT_TYPE_PCI) ? \
	PCIE_DIP2UPBUS(dip) : \
	ndi_port_type(dip, B_FALSE, DEVI_PORT_TYPE_PCI) ? \
	PCIE_DIP2DOWNBUS(dip) : NULL)

#define	PCIE_DIP2UPBUS(dip) \
	((pcie_bus_t *)ndi_get_bus_private(dip, B_TRUE))
#define	PCIE_DIP2DOWNBUS(dip) \
	((pcie_bus_t *)ndi_get_bus_private(dip, B_FALSE))
#define	PCIE_DIP2PFD(dip) (PCIE_DIP2BUS(dip))->bus_pfd
#define	PCIE_PFD2BUS(pfd_p) pfd_p->pe_bus_p
#define	PCIE_PFD2DIP(pfd_p) PCIE_PFD2BUS(pfd_p)->bus_dip
#define	PCIE_BUS2DIP(bus_p) bus_p->bus_dip
#define	PCIE_BUS2PFD(bus_p) PCIE_DIP2PFD(PCIE_BUS2DIP(bus_p))

#define	PCIE_IS_PCIE(bus_p) (bus_p->bus_pcie_off)
#define	PCIE_IS_PCIX(bus_p) (bus_p->bus_pcix_off)
#define	PCIE_IS_PCI(bus_p) \
	(bus_p->bus_dev_type == PCIE_PCIECAP_DEV_TYPE_PCI_DEV)
#define	PCIE_HAS_AER(bus_p) (bus_p->bus_aer_off)
/* IS_ROOT = is RC or RP */
#define	PCIE_IS_ROOT(bus_p) (PCIE_IS_RC(bus_p) || PCIE_IS_RP(bus_p))
/*
 * This is a pseudo pcie "device type", but it's needed to explain describe
 * nodes such as PX and NPE, which aren't really PCI devices but do control or
 * interaction with PCI error handling.
 */
#define	PCIE_IS_RC(bus_p) \
	(bus_p->bus_dev_type == PCIE_PCIECAP_DEV_TYPE_RC_PSEUDO)
#define	PCIE_IS_RP(bus_p) \
	((bus_p->bus_dev_type == PCIE_PCIECAP_DEV_TYPE_ROOT) && \
	    PCIE_IS_PCIE(bus_p))
#define	PCIE_IS_SW(bus_p) \
	((bus_p->bus_dev_type == PCIE_PCIECAP_DEV_TYPE_UP) || \
	    (bus_p->bus_dev_type == PCIE_PCIECAP_DEV_TYPE_DOWN))
#define	PCIE_IS_BDG(bus_p)  (bus_p->bus_hdr_type == PCI_HEADER_ONE)
#define	PCIE_IS_PCI_BDG(bus_p) \
	((bus_p->bus_dev_type == PCIE_PCIECAP_DEV_TYPE_PCI_DEV) && \
	    PCIE_IS_BDG(bus_p))
#define	PCIE_IS_PCIE_BDG(bus_p) \
	(bus_p->bus_dev_type == PCIE_PCIECAP_DEV_TYPE_PCIE2PCI)
#define	PCIE_IS_PCIE_SEC(bus_p) \
	(PCIE_IS_PCIE(bus_p) && PCIE_IS_BDG(bus_p) && !PCIE_IS_PCIE_BDG(bus_p))
#define	PCIX_ECC_VERSION_CHECK(bus_p) \
	((bus_p->bus_ecc_ver == PCI_PCIX_VER_1) || \
	    (bus_p->bus_ecc_ver == PCI_PCIX_VER_2))

#define	PCIE_VENID(bus_p)	(bus_p->bus_dev_ven_id & 0xffff)
#define	PCIE_DEVID(bus_p)	((bus_p->bus_dev_ven_id >> 16) & 0xffff)

/* PCIE Cap/AER shortcuts */
#define	PCIE_GET(sz, bus_p, off) \
	pci_config_get ## sz(bus_p->bus_cfg_hdl, off)
#define	PCIE_PUT(sz, bus_p, off, val) \
	pci_config_put ## sz(bus_p->bus_cfg_hdl, off, val)
#define	PCIE_CAP_GET(sz, bus_p, off) \
	PCI_CAP_GET ## sz(bus_p->bus_cfg_hdl, NULL, bus_p->bus_pcie_off, off)
#define	PCIE_CAP_PUT(sz, bus_p, off, val) \
	PCI_CAP_PUT ## sz(bus_p->bus_cfg_hdl, NULL, bus_p->bus_pcie_off, off, \
	    val)
#define	PCIE_AER_GET(sz, bus_p, off) \
	PCI_XCAP_GET ## sz(bus_p->bus_cfg_hdl, NULL, bus_p->bus_aer_off, off)
#define	PCIE_AER_PUT(sz, bus_p, off, val) \
	PCI_XCAP_PUT ## sz(bus_p->bus_cfg_hdl, NULL, bus_p->bus_aer_off, off, \
	    val)
#define	PCIX_CAP_GET(sz, bus_p, off) \
	PCI_CAP_GET ## sz(bus_p->bus_cfg_hdl, NULL, bus_p->bus_pcix_off, off)
#define	PCIX_CAP_PUT(sz, bus_p, off, val) \
	PCI_CAP_PUT ## sz(bus_p->bus_cfg_hdl, NULL, bus_p->bus_pcix_off, off, \
	    val)

/* Translate PF error return values to DDI_FM values */
#define	PF_ERR2DDIFM_ERR(sts) \
	(sts & PF_ERR_FATAL_FLAGS ? DDI_FM_FATAL :	\
	(sts == PF_ERR_NO_ERROR ? DDI_FM_OK : DDI_FM_NONFATAL))

/*
 * The following flag is used for Broadcom 5714/5715 bridge prefetch issue.
 * This flag will be used both by px and px_pci nexus drivers.
 */
#define	PX_DMAI_FLAGS_MAP_BUFZONE	0x40000

/*
 * PCI(e/-X) structures used to to gather and report errors detected by
 * PCI(e/-X) compliant devices.  These registers only contain "dynamic" data.
 * Static data such as Capability Offsets and Version #s is saved in the parent
 * private data.
 */
#define	PCI_ERR_REG(pfd_p)	   pfd_p->pe_pci_regs
#define	PCI_BDG_ERR_REG(pfd_p)	   PCI_ERR_REG(pfd_p)->pci_bdg_regs
#define	PCIX_ERR_REG(pfd_p)	   pfd_p->pe_ext.pe_pcix_regs
#define	PCIX_ECC_REG(pfd_p)	   PCIX_ERR_REG(pfd_p)->pcix_ecc_regs
#define	PCIX_BDG_ERR_REG(pfd_p)	   pfd_p->pe_pcix_bdg_regs
#define	PCIX_BDG_ECC_REG(pfd_p, n) PCIX_BDG_ERR_REG(pfd_p)->pcix_bdg_ecc_regs[n]
#define	PCIE_ERR_REG(pfd_p)	   pfd_p->pe_ext.pe_pcie_regs
#define	PCIE_RP_REG(pfd_p)	   PCIE_ERR_REG(pfd_p)->pcie_rp_regs
#define	PCIE_ROOT_FAULT(pfd_p)	   pfd_p->pe_root_fault
#define	PCIE_ADV_REG(pfd_p)	   PCIE_ERR_REG(pfd_p)->pcie_adv_regs
#define	PCIE_ADV_HDR(pfd_p, n)	   PCIE_ADV_REG(pfd_p)->pcie_ue_hdr[n]
#define	PCIE_ADV_BDG_REG(pfd_p) \
	PCIE_ADV_REG(pfd_p)->pcie_ext.pcie_adv_bdg_regs
#define	PCIE_ADV_BDG_HDR(pfd_p, n) PCIE_ADV_BDG_REG(pfd_p)->pcie_sue_hdr[n]
#define	PCIE_ADV_RP_REG(pfd_p) \
	PCIE_ADV_REG(pfd_p)->pcie_ext.pcie_adv_rp_regs
#define	PFD_IS_ROOT(pfd_p)	   PCIE_IS_ROOT(PCIE_PFD2BUS(pfd_p))
#define	PFD_IS_RC(pfd_p)	   PCIE_IS_RC(PCIE_PFD2BUS(pfd_p))
#define	PFD_IS_RP(pfd_p)	   PCIE_IS_RP(PCIE_PFD2BUS(pfd_p))

typedef struct pf_pci_bdg_err_regs {
	uint16_t pci_bdg_sec_stat;	/* PCI secondary status reg */
	uint16_t pci_bdg_ctrl;		/* PCI bridge control reg */
} pf_pci_bdg_err_regs_t;

typedef struct pf_pci_err_regs {
	uint16_t pci_err_status;	/* pci status register */
	uint16_t pci_cfg_comm;		/* pci command register */
	pf_pci_bdg_err_regs_t *pci_bdg_regs;
} pf_pci_err_regs_t;

typedef struct pf_pcix_ecc_regs {
	uint32_t pcix_ecc_ctlstat;	/* pcix ecc control status reg */
	uint32_t pcix_ecc_fstaddr;	/* pcix ecc first address reg */
	uint32_t pcix_ecc_secaddr;	/* pcix ecc second address reg */
	uint32_t pcix_ecc_attr;		/* pcix ecc attributes reg */
} pf_pcix_ecc_regs_t;

typedef struct pf_pcix_err_regs {
	uint16_t pcix_command;		/* pcix command register */
	uint32_t pcix_status;		/* pcix status register */
	pf_pcix_ecc_regs_t *pcix_ecc_regs;	/* pcix ecc registers */
} pf_pcix_err_regs_t;

typedef struct pf_pcix_bdg_err_regs {
	uint16_t pcix_bdg_sec_stat;	/* pcix bridge secondary status reg */
	uint32_t pcix_bdg_stat;		/* pcix bridge status reg */
	pf_pcix_ecc_regs_t *pcix_bdg_ecc_regs[2];	/* pcix ecc registers */
} pf_pcix_bdg_err_regs_t;

typedef struct pf_pcie_adv_bdg_err_regs {
	uint32_t pcie_sue_ctl;		/* pcie bridge secondary ue control */
	uint32_t pcie_sue_status;	/* pcie bridge secondary ue status */
	uint32_t pcie_sue_mask;		/* pcie bridge secondary ue mask */
	uint32_t pcie_sue_sev;		/* pcie bridge secondary ue severity */
	uint32_t pcie_sue_hdr[4];	/* pcie bridge secondary ue hdr log */
	uint32_t pcie_sue_tgt_trans;	/* Fault trans type from SAER Logs */
	uint64_t pcie_sue_tgt_addr;	/* Fault addr from SAER Logs */
	pcie_req_id_t pcie_sue_tgt_bdf;	/* Fault bdf from SAER Logs */
} pf_pcie_adv_bdg_err_regs_t;

typedef struct pf_pcie_adv_rp_err_regs {
	uint32_t pcie_rp_err_status;	/* pcie root complex error status reg */
	uint32_t pcie_rp_err_cmd;	/* pcie root complex error cmd reg */
	uint16_t pcie_rp_ce_src_id;	/* pcie root complex ce sourpe id */
	uint16_t pcie_rp_ue_src_id;	/* pcie root complex ue sourpe id */
} pf_pcie_adv_rp_err_regs_t;

typedef struct pf_pcie_adv_err_regs {
	uint32_t pcie_adv_ctl;		/* pcie advanced control reg */
	uint32_t pcie_ue_status;	/* pcie ue error status reg */
	uint32_t pcie_ue_mask;		/* pcie ue error mask reg */
	uint32_t pcie_ue_sev;		/* pcie ue error severity reg */
	uint32_t pcie_ue_hdr[4];	/* pcie ue header log */
	uint32_t pcie_ce_status;	/* pcie ce error status reg */
	uint32_t pcie_ce_mask;		/* pcie ce error mask reg */
	union {
		pf_pcie_adv_bdg_err_regs_t *pcie_adv_bdg_regs; /* bdg regs */
		pf_pcie_adv_rp_err_regs_t *pcie_adv_rp_regs;	 /* rp regs */
	} pcie_ext;
	uint32_t pcie_ue_tgt_trans;	/* Fault trans type from AER Logs */
	uint64_t pcie_ue_tgt_addr;	/* Fault addr from AER Logs */
	pcie_req_id_t pcie_ue_tgt_bdf;	/* Fault bdf from SAER Logs */
} pf_pcie_adv_err_regs_t;

typedef struct pf_pcie_rp_err_regs {
	uint32_t pcie_rp_status;	/* root complex status register */
	uint16_t pcie_rp_ctl;		/* root complex control register */
} pf_pcie_rp_err_regs_t;

typedef struct pf_pcie_err_regs {
	uint16_t pcie_err_status;	/* pcie device status register */
	uint16_t pcie_err_ctl;		/* pcie error control register */
	uint32_t pcie_dev_cap;		/* pcie device capabilities register */
	pf_pcie_rp_err_regs_t *pcie_rp_regs;	 /* pcie root complex regs */
	pf_pcie_adv_err_regs_t *pcie_adv_regs; /* pcie aer regs */
} pf_pcie_err_regs_t;

typedef struct pf_root_fault {
	pcie_req_id_t	fault_bdf;	/* Fault BDF of error */
	uint64_t	fault_addr;	/* Fault Addr of error */
	boolean_t	full_scan;	/* Option to do a full scan */
} pf_root_fault_t;

typedef struct pf_data pf_data_t;

typedef struct pcie_bus {
	/* Needed for PCI/PCIe fabric error handling */
	dev_info_t	*bus_dip;
	dev_info_t	*bus_rp_dip;
	ddi_acc_handle_t bus_cfg_hdl;		/* error handling acc handle */
	uint_t		bus_fm_flags;

	/* Static PCI/PCIe information */
	pcie_req_id_t	bus_bdf;
	pcie_req_id_t	bus_rp_bdf;		/* BDF of device's Root Port */
	uint32_t	bus_dev_ven_id;		/* device/vendor ID */
	uint8_t		bus_rev_id;		/* revision ID */
	uint8_t		bus_hdr_type;		/* pci header type, see pci.h */
	pcie_req_id_t	bus_pcie2pci_secbus;	/* PCIe2PCI Bridge secbus num */
	uint16_t	bus_dev_type;		/* PCI-E dev type, see pcie.h */
	uint8_t		bus_bdg_secbus;		/* Bridge secondary bus num */
	uint16_t	bus_pcie_off;		/* PCIe Capability Offset */
	uint16_t	bus_aer_off;		/* PCIe Advanced Error Offset */
	uint16_t	bus_pcix_off;		/* PCIx Capability Offset */
	uint16_t	bus_ecc_ver;		/* PCIX ecc version */
	pci_bus_range_t	bus_bus_range;		/* pci bus-range property */
	ppb_ranges_t	*bus_addr_ranges;	/* pci range property */
	int		bus_addr_entries;	/* number of range prop */
	pci_regspec_t	*bus_assigned_addr;	/* "assigned-address" prop */
	int		bus_assigned_entries;	/* number of prop entries */

	/* Cache of last fault data */
	pf_data_t	*bus_pfd;
} pcie_bus_t;

struct pf_data {
	boolean_t		pe_lock;
	boolean_t		pe_valid;
	uint32_t		pe_severity_flags;	/* Severity of error */
	pcie_bus_t		*pe_bus_p;
	pf_root_fault_t		*pe_root_fault;	/* Only valid for RC and RP */
	pf_pci_err_regs_t	*pe_pci_regs;	/* PCI error reg */
	union {
		pf_pcix_err_regs_t	*pe_pcix_regs;	/* PCI-X error reg */
		pf_pcie_err_regs_t	*pe_pcie_regs;	/* PCIe error reg */
	} pe_ext;
	pf_pcix_bdg_err_regs_t *pe_pcix_bdg_regs; /* PCI-X bridge regs */
	pf_data_t		*pe_prev;	/* Next error in queue */
	pf_data_t		*pe_next;	/* Next error in queue */
};

/* Information used while handling errors in the fabric. */
typedef struct pf_impl {
	ddi_fm_error_t	*pf_derr;
	pf_root_fault_t	*pf_fault;	/* captured fault bdf/addr to scan */
	pf_data_t	*pf_dq_head_p;	/* ptr to fault data queue */
	pf_data_t	*pf_dq_tail_p;	/* ptr pt last fault data q */
	uint32_t	pf_total;	/* total non RC pf_datas */
} pf_impl_t;

/* bus_fm_flags field */
#define	PF_FM_READY		(1 << 0)	/* bus_fm_lock initialized */
#define	PF_FM_IS_NH		(1 << 1)	/* known as non-hardened */

/*
 * PCIe fabric handle lookup address flags.  Used to define what type of
 * transaction the address is for.  These same value are defined again in
 * fabric-xlate FM module.  Do not modify these variables, without modifying
 * those.
 */
#define	PF_ADDR_DMA		(1 << 0)
#define	PF_ADDR_PIO		(1 << 1)
#define	PF_ADDR_CFG		(1 << 2)

/* PCIe fabric error scanning status flags */
#define	PF_SCAN_SUCCESS		(1 << 0)
#define	PF_SCAN_CB_FAILURE	(1 << 1) /* hardened device callback failure */
#define	PF_SCAN_NO_ERR_IN_CHILD	(1 << 2) /* no errors in bridge sec stat reg */
#define	PF_SCAN_IN_DQ		(1 << 3) /* already present in the faultq */
#define	PF_SCAN_DEADLOCK	(1 << 4) /* deadlock detected */
#define	PF_SCAN_BAD_RESPONSE	(1 << 5) /* Incorrect device response */

/* PCIe fabric error handling severity return flags */
#define	PF_ERR_NO_ERROR		(1 << 0) /* No error seen */
#define	PF_ERR_CE		(1 << 1) /* Correctable Error */
#define	PF_ERR_NO_PANIC		(1 << 2) /* Error should not panic sys */
#define	PF_ERR_MATCHED_DEVICE	(1 << 3) /* Error Handled By Device */
#define	PF_ERR_MATCHED_RC	(1 << 4) /* Error Handled By RC */
#define	PF_ERR_MATCHED_PARENT	(1 << 5) /* Error Handled By Parent */
#define	PF_ERR_PANIC		(1 << 6) /* Error should panic system */
#define	PF_ERR_PANIC_DEADLOCK	(1 << 7) /* deadlock detected */

#define	PF_ERR_FATAL_FLAGS	(PF_ERR_PANIC | PF_ERR_PANIC_DEADLOCK)

#define	PF_HDL_FOUND		1
#define	PF_HDL_NOTFOUND		2

#define	PCIE_PCIECAP_DEV_TYPE_RC_PSEUDO	0x100

/* PCIe Friendly Functions */
extern int pcie_initchild(dev_info_t *dip);
extern void pcie_uninitchild(dev_info_t *dip);
extern void pcie_clear_errors(dev_info_t *dip);
extern int pcie_postattach_child(dev_info_t *dip);
extern void pcie_enable_errors(dev_info_t *dip);
extern void pcie_disable_errors(dev_info_t *dip);
extern int pcie_enable_ce(dev_info_t *dip);
extern boolean_t pcie_bridge_is_link_disabled(dev_info_t *);

extern pcie_bus_t *pcie_init_bus(dev_info_t *cdip);
extern void pcie_fini_bus(dev_info_t *cdip);
extern void pcie_rc_init_bus(dev_info_t *dip);
extern void pcie_rc_fini_bus(dev_info_t *dip);
extern void pcie_rc_init_pfd(dev_info_t *dip, pf_data_t *pfd);
extern void pcie_rc_fini_pfd(pf_data_t *pfd);
extern boolean_t pcie_is_child(dev_info_t *dip, dev_info_t *rdip);
extern int pcie_get_bdf_from_dip(dev_info_t *dip, pcie_req_id_t *bdf);
extern dev_info_t *pcie_get_my_childs_dip(dev_info_t *dip, dev_info_t *rdip);
extern uint32_t pcie_get_bdf_for_dma_xfer(dev_info_t *dip, dev_info_t *rdip);

extern uint32_t pcie_get_aer_uce_mask();
extern uint32_t pcie_get_aer_ce_mask();
extern uint32_t pcie_get_aer_suce_mask();
extern uint32_t pcie_get_serr_mask();
extern void pcie_set_aer_uce_mask(uint32_t mask);
extern void pcie_set_aer_ce_mask(uint32_t mask);
extern void pcie_set_aer_suce_mask(uint32_t mask);
extern void pcie_set_serr_mask(uint32_t mask);

/* PCIe error handling functions */
extern int pf_scan_fabric(dev_info_t *rpdip, ddi_fm_error_t *derr,
    pf_data_t *root_pfd_p);
extern void pf_init(dev_info_t *, ddi_iblock_cookie_t, ddi_attach_cmd_t);
extern void pf_fini(dev_info_t *, ddi_detach_cmd_t);
extern int pf_hdl_lookup(dev_info_t *, uint64_t, uint32_t, uint64_t,
    pcie_req_id_t);
extern int pf_tlp_decode(pcie_bus_t *, pf_pcie_adv_err_regs_t *);

#ifdef	__cplusplus
}
#endif

#endif	/* _SYS_PCIE_IMPL_H */