#include <linux/hypervisor.h>
#include <linux/irqdomain.h>
#include <linux/pm_runtime.h>
+#include <linux/bitfield.h>
#include "pci.h"
#define CARDBUS_LATENCY_TIMER 176 /* secondary latency timer */
pdev->pcie_cap = pos;
pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
pdev->pcie_flags_reg = reg16;
- pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
- pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
+ pci_read_config_dword(pdev, pos + PCI_EXP_DEVCAP, &pdev->devcap);
+ pdev->pcie_mpss = FIELD_GET(PCI_EXP_DEVCAP_PAYLOAD, pdev->devcap);
parent = pci_upstream_bridge(pdev);
if (!parent)
dev->error_state = pci_channel_io_normal;
set_pcie_port_type(dev);
+ pci_set_of_node(dev);
+ pci_set_acpi_fwnode(dev);
+
pci_dev_assign_slot(dev);
/*
default: /* unknown header */
pci_err(dev, "unknown header type %02x, ignoring device\n",
dev->hdr_type);
+ pci_release_of_node(dev);
return -EIO;
bad:
{
pci_aer_exit(dev);
pci_rcec_exit(dev);
- pci_vpd_release(dev);
pci_iov_release(dev);
pci_free_cap_save_buffers(dev);
}
dev->vendor = l & 0xffff;
dev->device = (l >> 16) & 0xffff;
- pci_set_of_node(dev);
-
if (pci_setup_device(dev)) {
- pci_release_of_node(dev);
pci_bus_put(dev->bus);
kfree(dev);
return NULL;
pci_rcec_init(dev); /* Root Complex Event Collector */
pcie_report_downtraining(dev);
-
- if (pci_probe_reset_function(dev) == 0)
- dev->reset_fn = 1;
+ pci_init_reset_methods(dev);
}
/*
PCI_STATUS_SIG_TARGET_ABORT | \
PCI_STATUS_PARITY)
+/* Number of reset methods used in pci_reset_fn_methods array in pci.c */
+#define PCI_NUM_RESET_METHODS 7
+
+#define PCI_RESET_PROBE true
+#define PCI_RESET_DO_RESET false
+
/*
* The PCI interface treats multi-function devices as independent
* devices. The slot/function address of each device is encoded
struct pci_cap_saved_data cap;
};
+ struct pci_vpd {
+ struct mutex lock;
+ unsigned int len;
+ u8 cap;
+ };
+
struct irq_affinity;
struct pcie_link_state;
- struct pci_vpd;
struct pci_sriov;
struct pci_p2pdma;
struct rcec_ea;
struct rcec_ea *rcec_ea; /* RCEC cached endpoint association */
struct pci_dev *rcec; /* Associated RCEC device */
#endif
+ u32 devcap; /* PCIe Device Capabilities */
u8 pcie_cap; /* PCIe capability offset */
u8 msi_cap; /* MSI capability offset */
u8 msix_cap; /* MSI-X capability offset */
supported from root to here */
u16 l1ss; /* L1SS Capability pointer */
#endif
+ unsigned int pasid_no_tlp:1; /* PASID works without TLP Prefix */
unsigned int eetlp_prefix_path:1; /* End-to-End TLP Prefix */
pci_channel_state_t error_state; /* Current connectivity state */
unsigned int state_saved:1;
unsigned int is_physfn:1;
unsigned int is_virtfn:1;
- unsigned int reset_fn:1;
unsigned int is_hotplug_bridge:1;
unsigned int shpc_managed:1; /* SHPC owned by shpchp */
unsigned int is_thunderbolt:1; /* Thunderbolt controller */
#ifdef CONFIG_PCI_MSI
const struct attribute_group **msi_irq_groups;
#endif
- struct pci_vpd *vpd;
+ struct pci_vpd vpd;
#ifdef CONFIG_PCIE_DPC
u16 dpc_cap;
unsigned int dpc_rp_extensions:1;
char *driver_override; /* Driver name to force a match */
unsigned long priv_flags; /* Private flags for the PCI driver */
+
+ /* These methods index pci_reset_fn_methods[] */
+ u8 reset_methods[PCI_NUM_RESET_METHODS]; /* In priority order */
};
static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
enum pci_bus_speed *speed,
enum pcie_link_width *width);
void pcie_print_link_status(struct pci_dev *dev);
-bool pcie_has_flr(struct pci_dev *dev);
+int pcie_reset_flr(struct pci_dev *dev, bool probe);
int pcie_flr(struct pci_dev *dev);
int __pci_reset_function_locked(struct pci_dev *dev);
int pci_reset_function(struct pci_dev *dev);
#define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
#define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
#define pci_resource_len(dev,bar) \
- ((pci_resource_start((dev), (bar)) == 0 && \
- pci_resource_end((dev), (bar)) == \
- pci_resource_start((dev), (bar))) ? 0 : \
+ ((pci_resource_end((dev), (bar)) == 0) ? 0 : \
\
(pci_resource_end((dev), (bar)) - \
pci_resource_start((dev), (bar)) + 1))
#define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA)
#define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA)
- /* Small Resource Data Type Tag Item Names */
- #define PCI_VPD_STIN_END 0x0f /* End */
-
- #define PCI_VPD_SRDT_END (PCI_VPD_STIN_END << 3)
-
- #define PCI_VPD_SRDT_TIN_MASK 0x78
- #define PCI_VPD_SRDT_LEN_MASK 0x07
- #define PCI_VPD_LRDT_TIN_MASK 0x7f
-
- #define PCI_VPD_LRDT_TAG_SIZE 3
- #define PCI_VPD_SRDT_TAG_SIZE 1
-
- #define PCI_VPD_INFO_FLD_HDR_SIZE 3
-
#define PCI_VPD_RO_KEYWORD_PARTNO "PN"
#define PCI_VPD_RO_KEYWORD_SERIALNO "SN"
#define PCI_VPD_RO_KEYWORD_MFR_ID "MN"
#define PCI_VPD_RO_KEYWORD_CHKSUM "RV"
/**
- * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length
- * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
- *
- * Returns the extracted Large Resource Data Type length.
- */
- static inline u16 pci_vpd_lrdt_size(const u8 *lrdt)
- {
- return (u16)lrdt[1] + ((u16)lrdt[2] << 8);
- }
-
- /**
- * pci_vpd_lrdt_tag - Extracts the Large Resource Data Type Tag Item
- * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
- *
- * Returns the extracted Large Resource Data Type Tag item.
- */
- static inline u16 pci_vpd_lrdt_tag(const u8 *lrdt)
- {
- return (u16)(lrdt[0] & PCI_VPD_LRDT_TIN_MASK);
- }
-
- /**
- * pci_vpd_srdt_size - Extracts the Small Resource Data Type length
- * @srdt: Pointer to the beginning of the Small Resource Data Type tag
- *
- * Returns the extracted Small Resource Data Type length.
- */
- static inline u8 pci_vpd_srdt_size(const u8 *srdt)
- {
- return (*srdt) & PCI_VPD_SRDT_LEN_MASK;
- }
-
- /**
- * pci_vpd_srdt_tag - Extracts the Small Resource Data Type Tag Item
- * @srdt: Pointer to the beginning of the Small Resource Data Type tag
+ * pci_vpd_alloc - Allocate buffer and read VPD into it
+ * @dev: PCI device
+ * @size: pointer to field where VPD length is returned
*
- * Returns the extracted Small Resource Data Type Tag Item.
+ * Returns pointer to allocated buffer or an ERR_PTR in case of failure
*/
- static inline u8 pci_vpd_srdt_tag(const u8 *srdt)
- {
- return ((*srdt) & PCI_VPD_SRDT_TIN_MASK) >> 3;
- }
+ void *pci_vpd_alloc(struct pci_dev *dev, unsigned int *size);
/**
- * pci_vpd_info_field_size - Extracts the information field length
- * @info_field: Pointer to the beginning of an information field header
+ * pci_vpd_find_id_string - Locate id string in VPD
+ * @buf: Pointer to buffered VPD data
+ * @len: The length of the buffer area in which to search
+ * @size: Pointer to field where length of id string is returned
*
- * Returns the extracted information field length.
+ * Returns the index of the id string or -ENOENT if not found.
*/
- static inline u8 pci_vpd_info_field_size(const u8 *info_field)
- {
- return info_field[2];
- }
+ int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size);
/**
- * pci_vpd_find_tag - Locates the Resource Data Type tag provided
- * @buf: Pointer to buffered vpd data
- * @len: The length of the vpd buffer
- * @rdt: The Resource Data Type to search for
+ * pci_vpd_find_ro_info_keyword - Locate info field keyword in VPD RO section
+ * @buf: Pointer to buffered VPD data
+ * @len: The length of the buffer area in which to search
+ * @kw: The keyword to search for
+ * @size: Pointer to field where length of found keyword data is returned
*
- * Returns the index where the Resource Data Type was found or
- * -ENOENT otherwise.
+ * Returns the index of the information field keyword data or -ENOENT if
+ * not found.
*/
- int pci_vpd_find_tag(const u8 *buf, unsigned int len, u8 rdt);
+ int pci_vpd_find_ro_info_keyword(const void *buf, unsigned int len,
+ const char *kw, unsigned int *size);
/**
- * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD
- * @buf: Pointer to buffered vpd data
- * @off: The offset into the buffer at which to begin the search
- * @len: The length of the buffer area, relative to off, in which to search
- * @kw: The keyword to search for
+ * pci_vpd_check_csum - Check VPD checksum
+ * @buf: Pointer to buffered VPD data
+ * @len: VPD size
*
- * Returns the index where the information field keyword was found or
- * -ENOENT otherwise.
+ * Returns 1 if VPD has no checksum, otherwise 0 or an errno
*/
- int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
- unsigned int len, const char *kw);
+ int pci_vpd_check_csum(const void *buf, unsigned int len);
/* PCI <-> OF binding helpers */
#ifdef CONFIG_OF
projects / platform / kernel / linux-rpi.git / commitdiff