4d185754cf
On some platforms, BAR entries are hardcoded and must not be accessed
using standard method. Add functionality to identify this situation
and configure the bus based on Enhanced Allocation structure.
Obtained from: Semihalf
Sponsored by: Cavium
Approved by: cognet (mentor)
Reviewed by: jhb
Differential revision: https://reviews.freebsd.org/D5242
619 lines
18 KiB
C
619 lines
18 KiB
C
/*-
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* Copyright (c) 1997, Stefan Esser <se@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef _PCIVAR_H_
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#define _PCIVAR_H_
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#include <sys/queue.h>
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/* some PCI bus constants */
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#define PCI_MAXMAPS_0 6 /* max. no. of memory/port maps */
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#define PCI_MAXMAPS_1 2 /* max. no. of maps for PCI to PCI bridge */
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#define PCI_MAXMAPS_2 1 /* max. no. of maps for CardBus bridge */
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typedef uint64_t pci_addr_t;
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/* Config registers for PCI-PCI and PCI-Cardbus bridges. */
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struct pcicfg_bridge {
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uint8_t br_seclat;
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uint8_t br_subbus;
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uint8_t br_secbus;
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uint8_t br_pribus;
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uint16_t br_control;
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};
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/* Interesting values for PCI power management */
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struct pcicfg_pp {
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uint16_t pp_cap; /* PCI power management capabilities */
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uint8_t pp_status; /* conf. space addr. of PM control/status reg */
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uint8_t pp_bse; /* conf. space addr. of PM BSE reg */
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uint8_t pp_data; /* conf. space addr. of PM data reg */
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};
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struct pci_map {
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pci_addr_t pm_value; /* Raw BAR value */
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pci_addr_t pm_size;
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uint16_t pm_reg;
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STAILQ_ENTRY(pci_map) pm_link;
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};
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struct vpd_readonly {
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char keyword[2];
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char *value;
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int len;
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};
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struct vpd_write {
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char keyword[2];
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char *value;
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int start;
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int len;
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};
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struct pcicfg_vpd {
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uint8_t vpd_reg; /* base register, + 2 for addr, + 4 data */
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char vpd_cached;
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char *vpd_ident; /* string identifier */
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int vpd_rocnt;
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struct vpd_readonly *vpd_ros;
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int vpd_wcnt;
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struct vpd_write *vpd_w;
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};
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/* Interesting values for PCI MSI */
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struct pcicfg_msi {
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uint16_t msi_ctrl; /* Message Control */
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uint8_t msi_location; /* Offset of MSI capability registers. */
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uint8_t msi_msgnum; /* Number of messages */
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int msi_alloc; /* Number of allocated messages. */
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uint64_t msi_addr; /* Contents of address register. */
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uint16_t msi_data; /* Contents of data register. */
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u_int msi_handlers;
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};
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/* Interesting values for PCI MSI-X */
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struct msix_vector {
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uint64_t mv_address; /* Contents of address register. */
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uint32_t mv_data; /* Contents of data register. */
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int mv_irq;
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};
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struct msix_table_entry {
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u_int mte_vector; /* 1-based index into msix_vectors array. */
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u_int mte_handlers;
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};
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struct pcicfg_msix {
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uint16_t msix_ctrl; /* Message Control */
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uint16_t msix_msgnum; /* Number of messages */
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uint8_t msix_location; /* Offset of MSI-X capability registers. */
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uint8_t msix_table_bar; /* BAR containing vector table. */
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uint8_t msix_pba_bar; /* BAR containing PBA. */
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uint32_t msix_table_offset;
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uint32_t msix_pba_offset;
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int msix_alloc; /* Number of allocated vectors. */
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int msix_table_len; /* Length of virtual table. */
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struct msix_table_entry *msix_table; /* Virtual table. */
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struct msix_vector *msix_vectors; /* Array of allocated vectors. */
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struct resource *msix_table_res; /* Resource containing vector table. */
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struct resource *msix_pba_res; /* Resource containing PBA. */
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};
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/* Interesting values for HyperTransport */
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struct pcicfg_ht {
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uint8_t ht_slave; /* Non-zero if device is an HT slave. */
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uint8_t ht_msimap; /* Offset of MSI mapping cap registers. */
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uint16_t ht_msictrl; /* MSI mapping control */
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uint64_t ht_msiaddr; /* MSI mapping base address */
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};
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/* Interesting values for PCI-express */
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struct pcicfg_pcie {
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uint8_t pcie_location; /* Offset of PCI-e capability registers. */
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uint8_t pcie_type; /* Device type. */
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uint16_t pcie_flags; /* Device capabilities register. */
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uint16_t pcie_device_ctl; /* Device control register. */
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uint16_t pcie_link_ctl; /* Link control register. */
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uint16_t pcie_slot_ctl; /* Slot control register. */
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uint16_t pcie_root_ctl; /* Root control register. */
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uint16_t pcie_device_ctl2; /* Second device control register. */
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uint16_t pcie_link_ctl2; /* Second link control register. */
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uint16_t pcie_slot_ctl2; /* Second slot control register. */
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};
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struct pcicfg_pcix {
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uint16_t pcix_command;
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uint8_t pcix_location; /* Offset of PCI-X capability registers. */
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};
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struct pcicfg_vf {
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int index;
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};
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struct pci_ea_entry {
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int eae_bei;
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uint32_t eae_flags;
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uint64_t eae_base;
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uint64_t eae_max_offset;
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uint32_t eae_cfg_offset;
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STAILQ_ENTRY(pci_ea_entry) eae_link;
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};
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struct pcicfg_ea {
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int ea_location; /* Structure offset in Configuration Header */
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STAILQ_HEAD(, pci_ea_entry) ea_entries; /* EA entries */
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};
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#define PCICFG_VF 0x0001 /* Device is an SR-IOV Virtual Function */
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/* config header information common to all header types */
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typedef struct pcicfg {
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struct device *dev; /* device which owns this */
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STAILQ_HEAD(, pci_map) maps; /* BARs */
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uint16_t subvendor; /* card vendor ID */
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uint16_t subdevice; /* card device ID, assigned by card vendor */
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uint16_t vendor; /* chip vendor ID */
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uint16_t device; /* chip device ID, assigned by chip vendor */
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uint16_t cmdreg; /* disable/enable chip and PCI options */
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uint16_t statreg; /* supported PCI features and error state */
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uint8_t baseclass; /* chip PCI class */
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uint8_t subclass; /* chip PCI subclass */
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uint8_t progif; /* chip PCI programming interface */
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uint8_t revid; /* chip revision ID */
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uint8_t hdrtype; /* chip config header type */
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uint8_t cachelnsz; /* cache line size in 4byte units */
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uint8_t intpin; /* PCI interrupt pin */
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uint8_t intline; /* interrupt line (IRQ for PC arch) */
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uint8_t mingnt; /* min. useful bus grant time in 250ns units */
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uint8_t maxlat; /* max. tolerated bus grant latency in 250ns */
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uint8_t lattimer; /* latency timer in units of 30ns bus cycles */
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uint8_t mfdev; /* multi-function device (from hdrtype reg) */
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uint8_t nummaps; /* actual number of PCI maps used */
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uint32_t domain; /* PCI domain */
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uint8_t bus; /* config space bus address */
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uint8_t slot; /* config space slot address */
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uint8_t func; /* config space function number */
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uint32_t flags; /* flags defined above */
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size_t devinfo_size; /* Size of devinfo for this bus type. */
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struct pcicfg_bridge bridge; /* Bridges */
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struct pcicfg_pp pp; /* Power management */
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struct pcicfg_vpd vpd; /* Vital product data */
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struct pcicfg_msi msi; /* PCI MSI */
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struct pcicfg_msix msix; /* PCI MSI-X */
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struct pcicfg_ht ht; /* HyperTransport */
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struct pcicfg_pcie pcie; /* PCI Express */
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struct pcicfg_pcix pcix; /* PCI-X */
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struct pcicfg_iov *iov; /* SR-IOV */
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struct pcicfg_vf vf; /* SR-IOV Virtual Function */
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struct pcicfg_ea ea; /* Enhanced Allocation */
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} pcicfgregs;
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/* additional type 1 device config header information (PCI to PCI bridge) */
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typedef struct {
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pci_addr_t pmembase; /* base address of prefetchable memory */
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pci_addr_t pmemlimit; /* topmost address of prefetchable memory */
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uint32_t membase; /* base address of memory window */
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uint32_t memlimit; /* topmost address of memory window */
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uint32_t iobase; /* base address of port window */
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uint32_t iolimit; /* topmost address of port window */
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uint16_t secstat; /* secondary bus status register */
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uint16_t bridgectl; /* bridge control register */
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uint8_t seclat; /* CardBus latency timer */
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} pcih1cfgregs;
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/* additional type 2 device config header information (CardBus bridge) */
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typedef struct {
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uint32_t membase0; /* base address of memory window */
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uint32_t memlimit0; /* topmost address of memory window */
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uint32_t membase1; /* base address of memory window */
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uint32_t memlimit1; /* topmost address of memory window */
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uint32_t iobase0; /* base address of port window */
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uint32_t iolimit0; /* topmost address of port window */
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uint32_t iobase1; /* base address of port window */
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uint32_t iolimit1; /* topmost address of port window */
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uint32_t pccardif; /* PC Card 16bit IF legacy more base addr. */
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uint16_t secstat; /* secondary bus status register */
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uint16_t bridgectl; /* bridge control register */
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uint8_t seclat; /* CardBus latency timer */
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} pcih2cfgregs;
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extern uint32_t pci_numdevs;
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/* Only if the prerequisites are present */
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#if defined(_SYS_BUS_H_) && defined(_SYS_PCIIO_H_)
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struct pci_devinfo {
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STAILQ_ENTRY(pci_devinfo) pci_links;
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struct resource_list resources;
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pcicfgregs cfg;
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struct pci_conf conf;
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};
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#endif
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#ifdef _SYS_BUS_H_
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#include "pci_if.h"
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enum pci_device_ivars {
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PCI_IVAR_SUBVENDOR,
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PCI_IVAR_SUBDEVICE,
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PCI_IVAR_VENDOR,
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PCI_IVAR_DEVICE,
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PCI_IVAR_DEVID,
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PCI_IVAR_CLASS,
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PCI_IVAR_SUBCLASS,
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PCI_IVAR_PROGIF,
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PCI_IVAR_REVID,
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PCI_IVAR_INTPIN,
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PCI_IVAR_IRQ,
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PCI_IVAR_DOMAIN,
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PCI_IVAR_BUS,
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PCI_IVAR_SLOT,
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PCI_IVAR_FUNCTION,
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PCI_IVAR_ETHADDR,
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PCI_IVAR_CMDREG,
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PCI_IVAR_CACHELNSZ,
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PCI_IVAR_MINGNT,
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PCI_IVAR_MAXLAT,
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PCI_IVAR_LATTIMER
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};
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/*
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* Simplified accessors for pci devices
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*/
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#define PCI_ACCESSOR(var, ivar, type) \
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__BUS_ACCESSOR(pci, var, PCI, ivar, type)
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PCI_ACCESSOR(subvendor, SUBVENDOR, uint16_t)
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PCI_ACCESSOR(subdevice, SUBDEVICE, uint16_t)
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PCI_ACCESSOR(vendor, VENDOR, uint16_t)
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PCI_ACCESSOR(device, DEVICE, uint16_t)
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PCI_ACCESSOR(devid, DEVID, uint32_t)
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PCI_ACCESSOR(class, CLASS, uint8_t)
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PCI_ACCESSOR(subclass, SUBCLASS, uint8_t)
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PCI_ACCESSOR(progif, PROGIF, uint8_t)
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PCI_ACCESSOR(revid, REVID, uint8_t)
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PCI_ACCESSOR(intpin, INTPIN, uint8_t)
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PCI_ACCESSOR(irq, IRQ, uint8_t)
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PCI_ACCESSOR(domain, DOMAIN, uint32_t)
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PCI_ACCESSOR(bus, BUS, uint8_t)
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PCI_ACCESSOR(slot, SLOT, uint8_t)
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PCI_ACCESSOR(function, FUNCTION, uint8_t)
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PCI_ACCESSOR(ether, ETHADDR, uint8_t *)
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PCI_ACCESSOR(cmdreg, CMDREG, uint8_t)
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PCI_ACCESSOR(cachelnsz, CACHELNSZ, uint8_t)
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PCI_ACCESSOR(mingnt, MINGNT, uint8_t)
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PCI_ACCESSOR(maxlat, MAXLAT, uint8_t)
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PCI_ACCESSOR(lattimer, LATTIMER, uint8_t)
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#undef PCI_ACCESSOR
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/*
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* Operations on configuration space.
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*/
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static __inline uint32_t
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pci_read_config(device_t dev, int reg, int width)
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{
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return PCI_READ_CONFIG(device_get_parent(dev), dev, reg, width);
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}
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static __inline void
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pci_write_config(device_t dev, int reg, uint32_t val, int width)
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{
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PCI_WRITE_CONFIG(device_get_parent(dev), dev, reg, val, width);
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}
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/*
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* Ivars for pci bridges.
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*/
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/*typedef enum pci_device_ivars pcib_device_ivars;*/
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enum pcib_device_ivars {
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PCIB_IVAR_DOMAIN,
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PCIB_IVAR_BUS
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};
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#define PCIB_ACCESSOR(var, ivar, type) \
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__BUS_ACCESSOR(pcib, var, PCIB, ivar, type)
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PCIB_ACCESSOR(domain, DOMAIN, uint32_t)
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PCIB_ACCESSOR(bus, BUS, uint32_t)
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#undef PCIB_ACCESSOR
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/*
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* PCI interrupt validation. Invalid interrupt values such as 0 or 128
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* on i386 or other platforms should be mapped out in the MD pcireadconf
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* code and not here, since the only MI invalid IRQ is 255.
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*/
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#define PCI_INVALID_IRQ 255
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#define PCI_INTERRUPT_VALID(x) ((x) != PCI_INVALID_IRQ)
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/*
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* Convenience functions.
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*
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* These should be used in preference to manually manipulating
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* configuration space.
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*/
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static __inline int
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pci_enable_busmaster(device_t dev)
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{
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return(PCI_ENABLE_BUSMASTER(device_get_parent(dev), dev));
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}
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static __inline int
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pci_disable_busmaster(device_t dev)
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{
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return(PCI_DISABLE_BUSMASTER(device_get_parent(dev), dev));
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}
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static __inline int
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pci_enable_io(device_t dev, int space)
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{
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return(PCI_ENABLE_IO(device_get_parent(dev), dev, space));
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}
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static __inline int
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pci_disable_io(device_t dev, int space)
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{
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return(PCI_DISABLE_IO(device_get_parent(dev), dev, space));
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}
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static __inline int
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pci_get_vpd_ident(device_t dev, const char **identptr)
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{
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return(PCI_GET_VPD_IDENT(device_get_parent(dev), dev, identptr));
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}
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static __inline int
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pci_get_vpd_readonly(device_t dev, const char *kw, const char **vptr)
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{
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return(PCI_GET_VPD_READONLY(device_get_parent(dev), dev, kw, vptr));
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}
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/*
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* Check if the address range falls within the VGA defined address range(s)
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*/
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static __inline int
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pci_is_vga_ioport_range(rman_res_t start, rman_res_t end)
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{
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return (((start >= 0x3b0 && end <= 0x3bb) ||
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(start >= 0x3c0 && end <= 0x3df)) ? 1 : 0);
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}
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static __inline int
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pci_is_vga_memory_range(rman_res_t start, rman_res_t end)
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{
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return ((start >= 0xa0000 && end <= 0xbffff) ? 1 : 0);
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}
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/*
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* PCI power states are as defined by ACPI:
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*
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* D0 State in which device is on and running. It is receiving full
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* power from the system and delivering full functionality to the user.
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* D1 Class-specific low-power state in which device context may or may not
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* be lost. Buses in D1 cannot do anything to the bus that would force
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* devices on that bus to lose context.
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* D2 Class-specific low-power state in which device context may or may
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* not be lost. Attains greater power savings than D1. Buses in D2
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* can cause devices on that bus to lose some context. Devices in D2
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* must be prepared for the bus to be in D2 or higher.
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* D3 State in which the device is off and not running. Device context is
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* lost. Power can be removed from the device.
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*/
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#define PCI_POWERSTATE_D0 0
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#define PCI_POWERSTATE_D1 1
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#define PCI_POWERSTATE_D2 2
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#define PCI_POWERSTATE_D3 3
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#define PCI_POWERSTATE_UNKNOWN -1
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static __inline int
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pci_set_powerstate(device_t dev, int state)
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{
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return PCI_SET_POWERSTATE(device_get_parent(dev), dev, state);
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}
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static __inline int
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pci_get_powerstate(device_t dev)
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{
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return PCI_GET_POWERSTATE(device_get_parent(dev), dev);
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}
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static __inline int
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pci_find_cap(device_t dev, int capability, int *capreg)
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{
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return (PCI_FIND_CAP(device_get_parent(dev), dev, capability, capreg));
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}
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static __inline int
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pci_find_extcap(device_t dev, int capability, int *capreg)
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{
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return (PCI_FIND_EXTCAP(device_get_parent(dev), dev, capability, capreg));
|
|
}
|
|
|
|
static __inline int
|
|
pci_find_htcap(device_t dev, int capability, int *capreg)
|
|
{
|
|
return (PCI_FIND_HTCAP(device_get_parent(dev), dev, capability, capreg));
|
|
}
|
|
|
|
static __inline int
|
|
pci_alloc_msi(device_t dev, int *count)
|
|
{
|
|
return (PCI_ALLOC_MSI(device_get_parent(dev), dev, count));
|
|
}
|
|
|
|
static __inline int
|
|
pci_alloc_msix(device_t dev, int *count)
|
|
{
|
|
return (PCI_ALLOC_MSIX(device_get_parent(dev), dev, count));
|
|
}
|
|
|
|
static __inline void
|
|
pci_enable_msi(device_t dev, uint64_t address, uint16_t data)
|
|
{
|
|
PCI_ENABLE_MSI(device_get_parent(dev), dev, address, data);
|
|
}
|
|
|
|
static __inline void
|
|
pci_enable_msix(device_t dev, u_int index, uint64_t address, uint32_t data)
|
|
{
|
|
PCI_ENABLE_MSIX(device_get_parent(dev), dev, index, address, data);
|
|
}
|
|
|
|
static __inline void
|
|
pci_disable_msi(device_t dev)
|
|
{
|
|
PCI_DISABLE_MSI(device_get_parent(dev), dev);
|
|
}
|
|
|
|
static __inline int
|
|
pci_remap_msix(device_t dev, int count, const u_int *vectors)
|
|
{
|
|
return (PCI_REMAP_MSIX(device_get_parent(dev), dev, count, vectors));
|
|
}
|
|
|
|
static __inline int
|
|
pci_release_msi(device_t dev)
|
|
{
|
|
return (PCI_RELEASE_MSI(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline int
|
|
pci_msi_count(device_t dev)
|
|
{
|
|
return (PCI_MSI_COUNT(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline int
|
|
pci_msix_count(device_t dev)
|
|
{
|
|
return (PCI_MSIX_COUNT(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline int
|
|
pci_msix_pba_bar(device_t dev)
|
|
{
|
|
return (PCI_MSIX_PBA_BAR(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline int
|
|
pci_msix_table_bar(device_t dev)
|
|
{
|
|
return (PCI_MSIX_TABLE_BAR(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline uint16_t
|
|
pci_get_rid(device_t dev)
|
|
{
|
|
return (PCI_GET_RID(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline void
|
|
pci_child_added(device_t dev)
|
|
{
|
|
|
|
return (PCI_CHILD_ADDED(device_get_parent(dev), dev));
|
|
}
|
|
|
|
device_t pci_find_bsf(uint8_t, uint8_t, uint8_t);
|
|
device_t pci_find_dbsf(uint32_t, uint8_t, uint8_t, uint8_t);
|
|
device_t pci_find_device(uint16_t, uint16_t);
|
|
device_t pci_find_class(uint8_t class, uint8_t subclass);
|
|
|
|
/* Can be used by drivers to manage the MSI-X table. */
|
|
int pci_pending_msix(device_t dev, u_int index);
|
|
|
|
int pci_msi_device_blacklisted(device_t dev);
|
|
int pci_msix_device_blacklisted(device_t dev);
|
|
|
|
void pci_ht_map_msi(device_t dev, uint64_t addr);
|
|
|
|
device_t pci_find_pcie_root_port(device_t dev);
|
|
int pci_get_max_read_req(device_t dev);
|
|
void pci_restore_state(device_t dev);
|
|
void pci_save_state(device_t dev);
|
|
int pci_set_max_read_req(device_t dev, int size);
|
|
uint32_t pcie_read_config(device_t dev, int reg, int width);
|
|
void pcie_write_config(device_t dev, int reg, uint32_t value, int width);
|
|
uint32_t pcie_adjust_config(device_t dev, int reg, uint32_t mask,
|
|
uint32_t value, int width);
|
|
|
|
|
|
#ifdef BUS_SPACE_MAXADDR
|
|
#if (BUS_SPACE_MAXADDR > 0xFFFFFFFF)
|
|
#define PCI_DMA_BOUNDARY 0x100000000
|
|
#else
|
|
#define PCI_DMA_BOUNDARY 0
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* _SYS_BUS_H_ */
|
|
|
|
/*
|
|
* cdev switch for control device, initialised in generic PCI code
|
|
*/
|
|
extern struct cdevsw pcicdev;
|
|
|
|
/*
|
|
* List of all PCI devices, generation count for the list.
|
|
*/
|
|
STAILQ_HEAD(devlist, pci_devinfo);
|
|
|
|
extern struct devlist pci_devq;
|
|
extern uint32_t pci_generation;
|
|
|
|
struct pci_map *pci_find_bar(device_t dev, int reg);
|
|
int pci_bar_enabled(device_t dev, struct pci_map *pm);
|
|
struct pcicfg_vpd *pci_fetch_vpd_list(device_t dev);
|
|
|
|
#define VGA_PCI_BIOS_SHADOW_ADDR 0xC0000
|
|
#define VGA_PCI_BIOS_SHADOW_SIZE 131072
|
|
|
|
int vga_pci_is_boot_display(device_t dev);
|
|
void * vga_pci_map_bios(device_t dev, size_t *size);
|
|
void vga_pci_unmap_bios(device_t dev, void *bios);
|
|
int vga_pci_repost(device_t dev);
|
|
|
|
#endif /* _PCIVAR_H_ */
|