FM / asm

/usr/src/linux-headers-5.15.0-190/arch/s390/include/asm/

/usr/src/linux-headers-5.15.0-190/arch/s390/include/asm

Name	Size	Mode	Actions
fpu/	-	0755	rm
trace/	-	0755	rm
vdso/	-	0755	rm
airq.h	3421	0644	edit dl rm
alternative-asm.h	3148	0644	edit dl rm
alternative.h	5742	0644	edit dl rm
ap.h	13098	0644	edit dl rm
appldata.h	1593	0644	edit dl rm
archrandom.h	1319	0644	edit dl rm
asm-const.h	376	0644	edit dl rm
asm-prototypes.h	227	0644	edit dl rm
atomic.h	4225	0644	edit dl rm
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mem_detect.h	2589	0644	edit dl rm
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mmu.h	1515	0644	edit dl rm
mmu_context.h	3491	0644	edit dl rm
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module.h	1209	0644	edit dl rm
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page-states.h	486	0644	edit dl rm
page.h	5194	0644	edit dl rm
pci.h	8691	0644	edit dl rm
pci_clp.h	5346	0644	edit dl rm
pci_debug.h	608	0644	edit dl rm
pci_dma.h	5541	0644	edit dl rm
pci_insn.h	4089	0644	edit dl rm
pci_io.h	4405	0644	edit dl rm
percpu.h	6638	0644	edit dl rm
perf_event.h	3245	0644	edit dl rm
pgalloc.h	4024	0644	edit dl rm
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processor.h	9637	0644	edit dl rm
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qdio.h	10011	0644	edit dl rm
runtime_instr.h	634	0644	edit dl rm
schid.h	525	0644	edit dl rm
sclp.h	4332	0644	edit dl rm
scsw.h	24630	0644	edit dl rm
seccomp.h	808	0644	edit dl rm
sections.h	1357	0644	edit dl rm
serial.h	147	0644	edit dl rm
setup.h	5156	0644	edit dl rm
set_memory.h	989	0644	edit dl rm
shmparam.h	285	0644	edit dl rm
signal.h	644	0644	edit dl rm
sigp.h	1900	0644	edit dl rm
smp.h	1932	0644	edit dl rm
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vga.h	170	0644	edit dl rm
vmalloc.h	90	0644	edit dl rm
vmlinux.lds.h	1167	0644	edit dl rm
vtime.h	718	0644	edit dl rm
vtimer.h	830	0644	edit dl rm
vx-insn.h	13477	0644	edit dl rm
xor.h	454	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/arch/s390/include/asm/pci.h (8691B)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_S390_PCI_H
#define __ASM_S390_PCI_H

#include <linux/pci.h>
#include <linux/mutex.h>
#include <linux/iommu.h>
#include <linux/pci_hotplug.h>
#include <asm-generic/pci.h>
#include <asm/pci_clp.h>
#include <asm/pci_debug.h>
#include <asm/pci_insn.h>
#include <asm/sclp.h>

#define PCIBIOS_MIN_IO		0x1000
#define PCIBIOS_MIN_MEM		0x10000000

#define pcibios_assign_all_busses()	(0)

void __iomem *pci_iomap(struct pci_dev *, int, unsigned long);
void pci_iounmap(struct pci_dev *, void __iomem *);
int pci_domain_nr(struct pci_bus *);
int pci_proc_domain(struct pci_bus *);

#define ZPCI_BUS_NR			0	/* default bus number */

#define ZPCI_NR_DMA_SPACES		1
#define ZPCI_NR_DEVICES			CONFIG_PCI_NR_FUNCTIONS
#define ZPCI_DOMAIN_BITMAP_SIZE		(1 << 16)

#ifdef PCI
#if (ZPCI_NR_DEVICES > ZPCI_DOMAIN_BITMAP_SIZE)
# error ZPCI_NR_DEVICES can not be bigger than ZPCI_DOMAIN_BITMAP_SIZE
#endif
#endif /* PCI */

/* PCI Function Controls */
#define ZPCI_FC_FN_ENABLED		0x80
#define ZPCI_FC_ERROR			0x40
#define ZPCI_FC_BLOCKED			0x20
#define ZPCI_FC_DMA_ENABLED		0x10

#define ZPCI_FMB_DMA_COUNTER_VALID	(1 << 23)

struct zpci_fmb_fmt0 {
	u64 dma_rbytes;
	u64 dma_wbytes;
};

struct zpci_fmb_fmt1 {
	u64 rx_bytes;
	u64 rx_packets;
	u64 tx_bytes;
	u64 tx_packets;
};

struct zpci_fmb_fmt2 {
	u64 consumed_work_units;
	u64 max_work_units;
};

struct zpci_fmb_fmt3 {
	u64 tx_bytes;
};

struct zpci_fmb {
	u32 format	: 8;
	u32 fmt_ind	: 24;
	u32 samples;
	u64 last_update;
	/* common counters */
	u64 ld_ops;
	u64 st_ops;
	u64 stb_ops;
	u64 rpcit_ops;
	/* format specific counters */
	union {
		struct zpci_fmb_fmt0 fmt0;
		struct zpci_fmb_fmt1 fmt1;
		struct zpci_fmb_fmt2 fmt2;
		struct zpci_fmb_fmt3 fmt3;
	};
} __packed __aligned(128);

enum zpci_state {
	ZPCI_FN_STATE_STANDBY = 0,
	ZPCI_FN_STATE_CONFIGURED = 1,
	ZPCI_FN_STATE_RESERVED = 2,
};

struct zpci_bar_struct {
	struct resource *res;		/* bus resource */
	void __iomem	*mio_wb;
	void __iomem	*mio_wt;
	u32		val;		/* bar start & 3 flag bits */
	u16		map_idx;	/* index into bar mapping array */
	u8		size;		/* order 2 exponent */
};

struct s390_domain;
struct kvm_zdev;

#define ZPCI_FUNCTIONS_PER_BUS 256
struct zpci_bus {
	struct kref		kref;
	struct pci_bus		*bus;
	struct zpci_dev		*function[ZPCI_FUNCTIONS_PER_BUS];
	struct list_head	resources;
	struct list_head	bus_next;
	struct resource		bus_resource;
	int			pchid;
	int			domain_nr;
	bool			multifunction;
	enum pci_bus_speed	max_bus_speed;
};

/* Private data per function */
struct zpci_dev {
	struct zpci_bus *zbus;
	struct list_head entry;		/* list of all zpci_devices, needed for hotplug, etc. */
	struct list_head bus_next;
	struct kref kref;
	struct hotplug_slot hotplug_slot;

enum zpci_state state;
	u32		fid;		/* function ID, used by sclp */
	u32		fh;		/* function handle, used by insn's */
	u32		gisa;		/* GISA designation for passthrough */
	u16		vfn;		/* virtual function number */
	u16		pchid;		/* physical channel ID */
	u16		maxstbl;	/* Maximum store block size */
	u8		pfgid;		/* function group ID */
	u8		pft;		/* pci function type */
	u8		port;
	u8		dtsm;		/* Supported DT mask */
	u8		rid_available	: 1;
	u8		has_hp_slot	: 1;
	u8		has_resources	: 1;
	u8		is_physfn	: 1;
	u8		util_str_avail	: 1;
	u8		irqs_registered	: 1;
	u8		reserved	: 2;
	unsigned int	devfn;		/* DEVFN part of the RID*/

struct mutex lock;
	u8 pfip[CLP_PFIP_NR_SEGMENTS];	/* pci function internal path */
	u32 uid;			/* user defined id */
	u8 util_str[CLP_UTIL_STR_LEN];	/* utility string */

/* IRQ stuff */
	u64		msi_addr;	/* MSI address */
	unsigned int	max_msi;	/* maximum number of MSI's */
	unsigned int	msi_first_bit;
	unsigned int	msi_nr_irqs;
	struct airq_iv *aibv;		/* adapter interrupt bit vector */
	unsigned long	aisb;		/* number of the summary bit */

/* DMA stuff */
	unsigned long	*dma_table;
	spinlock_t	dma_table_lock;
	int		tlb_refresh;

spinlock_t	iommu_bitmap_lock;
	unsigned long	*iommu_bitmap;
	unsigned long	*lazy_bitmap;
	unsigned long	iommu_size;
	unsigned long	iommu_pages;
	unsigned int	next_bit;

struct iommu_device iommu_dev;  /* IOMMU core handle */

char res_name[16];
	bool mio_capable;
	struct zpci_bar_struct bars[PCI_STD_NUM_BARS];

u64		start_dma;	/* Start of available DMA addresses */
	u64		end_dma;	/* End of available DMA addresses */
	u64		dma_mask;	/* DMA address space mask */

/* Function measurement block */
	struct zpci_fmb *fmb;
	u16		fmb_update;	/* update interval */
	u16		fmb_length;
	/* software counters */
	atomic64_t allocated_pages;
	atomic64_t mapped_pages;
	atomic64_t unmapped_pages;

u8		version;
	enum pci_bus_speed max_bus_speed;

struct dentry	*debugfs_dev;

/* IOMMU and passthrough */
	struct s390_domain *s390_domain; /* s390 IOMMU domain data */
	struct kvm_zdev *kzdev;
	struct mutex kzdev_lock;
	struct notifier_block kvm_group_nb; /* Jammy-specific */
};

static inline bool zdev_enabled(struct zpci_dev *zdev)
{
	return (zdev->fh & (1UL << 31)) ? true : false;
}

extern const struct attribute_group *zpci_attr_groups[];
extern unsigned int s390_pci_force_floating __initdata;
extern unsigned int s390_pci_no_rid;

extern union zpci_sic_iib *zpci_aipb;
extern struct airq_iv *zpci_aif_sbv;

/* -----------------------------------------------------------------------------
  Prototypes
----------------------------------------------------------------------------- */
/* Base stuff */
struct zpci_dev *zpci_create_device(u32 fid, u32 fh, enum zpci_state state);
int zpci_enable_device(struct zpci_dev *);
int zpci_disable_device(struct zpci_dev *);
int zpci_scan_configured_device(struct zpci_dev *zdev, u32 fh);
int zpci_deconfigure_device(struct zpci_dev *zdev);
void zpci_device_reserved(struct zpci_dev *zdev);
bool zpci_is_device_configured(struct zpci_dev *zdev);

int zpci_hot_reset_device(struct zpci_dev *zdev);
int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
int zpci_unregister_ioat(struct zpci_dev *, u8);
void zpci_remove_reserved_devices(void);
void zpci_update_fh(struct zpci_dev *zdev, u32 fh);

/* CLP */
int clp_setup_writeback_mio(void);
int clp_scan_pci_devices(void);
int clp_query_pci_fn(struct zpci_dev *zdev);
int clp_enable_fh(struct zpci_dev *zdev, u32 *fh, u8 nr_dma_as);
int clp_disable_fh(struct zpci_dev *zdev, u32 *fh);
int clp_get_state(u32 fid, enum zpci_state *state);
int clp_refresh_fh(u32 fid, u32 *fh);

/* UID */
void update_uid_checking(bool new);

/* IOMMU Interface */
int zpci_init_iommu(struct zpci_dev *zdev);
void zpci_destroy_iommu(struct zpci_dev *zdev);

#ifdef CONFIG_PCI
static inline bool zpci_use_mio(struct zpci_dev *zdev)
{
	return static_branch_likely(&have_mio) && zdev->mio_capable;
}

/* Error handling and recovery */
void zpci_event_error(void *);
void zpci_event_availability(void *);
bool zpci_is_enabled(void);
#else /* CONFIG_PCI */
static inline void zpci_event_error(void *e) {}
static inline void zpci_event_availability(void *e) {}
#endif /* CONFIG_PCI */

#ifdef CONFIG_HOTPLUG_PCI_S390
int zpci_init_slot(struct zpci_dev *);
void zpci_exit_slot(struct zpci_dev *);
#else /* CONFIG_HOTPLUG_PCI_S390 */
static inline int zpci_init_slot(struct zpci_dev *zdev)
{
	return 0;
}
static inline void zpci_exit_slot(struct zpci_dev *zdev) {}
#endif /* CONFIG_HOTPLUG_PCI_S390 */

/* Helpers */
static inline struct zpci_dev *to_zpci(struct pci_dev *pdev)
{
	struct zpci_bus *zbus = pdev->sysdata;

return zbus->function[pdev->devfn];
}

static inline struct zpci_dev *to_zpci_dev(struct device *dev)
{
	return to_zpci(to_pci_dev(dev));
}

struct zpci_dev *get_zdev_by_fid(u32);

/* DMA */
int zpci_dma_init(void);
void zpci_dma_exit(void);
int zpci_dma_init_device(struct zpci_dev *zdev);
int zpci_dma_exit_device(struct zpci_dev *zdev);

/* IRQ */
int __init zpci_irq_init(void);
void __init zpci_irq_exit(void);

int zpci_set_irq(struct zpci_dev *zdev);
int zpci_clear_irq(struct zpci_dev *zdev);

/* FMB */
int zpci_fmb_enable_device(struct zpci_dev *);
int zpci_fmb_disable_device(struct zpci_dev *);

/* Debug */
int zpci_debug_init(void);
void zpci_debug_exit(void);
void zpci_debug_init_device(struct zpci_dev *, const char *);
void zpci_debug_exit_device(struct zpci_dev *);

/* Error handling */
int zpci_report_error(struct pci_dev *, struct zpci_report_error_header *);
int zpci_clear_error_state(struct zpci_dev *zdev);
int zpci_reset_load_store_blocked(struct zpci_dev *zdev);

#ifdef CONFIG_NUMA

/* Returns the node based on PCI bus */
static inline int __pcibus_to_node(const struct pci_bus *bus)
{
	return NUMA_NO_NODE;
}

static inline const struct cpumask *
cpumask_of_pcibus(const struct pci_bus *bus)
{
	return cpu_online_mask;
}

#endif /* CONFIG_NUMA */

#endif

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