mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
f0a399dbae
qemu/hw/s390x/s390-pci-bus.h
Yi Min Zhao f0a399dbae s390x/pci: fix up IOMMU size 
Present code uses @size==UINT64_MAX to initialize IOMMU. It infers that it
can map any 64-bit IOVA whatsoever. But in fact, the largest DMA range for
each PCI Device on s390x is from ZPCI_SDMA_ADDR to ZPCI_EDMA_ADDR. The largest
value is returned from hardware, which is to indicate the largest range
hardware can support. But the real IOMMU size for specific PCI Device is
obtained once qemu intercepts mpcifc instruction that guest is requesting a
DMA range for that PCI Device. Therefore, before intercepting mpcifc instruction,
qemu cannot be aware of the size of IOMMU region that guest will use.

Moreover, iommu replay during device initialization for the whole region in
4k steps takes a very long time.

In conclusion, this patch intializes IOMMU region for each PCI Device when
intercept mpcifc instruction which is to register DMA range for the PCI Device.
And then, destroy IOMMU region when guest wants to deregister IOAT.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-12-01 09:57:28 +01:00

254 lines
7.3 KiB
C
Raw Blame History

/*
* s390 PCI BUS definitions
*
* Copyright 2014 IBM Corp.
* Author(s): Frank Blaschka <frank.blaschka@de.ibm.com>
* Hong Bo Li <lihbbj@cn.ibm.com>
* Yi Min Zhao <zyimin@cn.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef HW_S390_PCI_BUS_H
#define HW_S390_PCI_BUS_H
#include <hw/pci/pci.h>
#include <hw/pci/pci_host.h>
#include "hw/s390x/sclp.h"
#include "hw/s390x/s390_flic.h"
#include "hw/s390x/css.h"
#define TYPE_S390_PCI_HOST_BRIDGE "s390-pcihost"
#define FH_VIRT 0x00ff0000
#define ENABLE_BIT_OFFSET 31
#define S390_PCIPT_ADAPTER 2
#define S390_PCI_HOST_BRIDGE(obj) \
OBJECT_CHECK(S390pciState, (obj), TYPE_S390_PCI_HOST_BRIDGE)
#define HP_EVENT_TO_CONFIGURED 0x0301
#define HP_EVENT_RESERVED_TO_STANDBY 0x0302
#define HP_EVENT_CONFIGURED_TO_STBRES 0x0304
#define HP_EVENT_STANDBY_TO_RESERVED 0x0308
#define ERR_EVENT_INVALAS 0x1
#define ERR_EVENT_OORANGE 0x2
#define ERR_EVENT_INVALTF 0x3
#define ERR_EVENT_TPROTE 0x4
#define ERR_EVENT_APROTE 0x5
#define ERR_EVENT_KEYE 0x6
#define ERR_EVENT_INVALTE 0x7
#define ERR_EVENT_INVALTL 0x8
#define ERR_EVENT_TT 0x9
#define ERR_EVENT_INVALMS 0xa
#define ERR_EVENT_SERR 0xb
#define ERR_EVENT_NOMSI 0x10
#define ERR_EVENT_INVALBV 0x11
#define ERR_EVENT_AIBV 0x12
#define ERR_EVENT_AIRERR 0x13
#define ERR_EVENT_FMBA 0x2a
#define ERR_EVENT_FMBUP 0x2b
#define ERR_EVENT_FMBPRO 0x2c
#define ERR_EVENT_CCONF 0x30
#define ERR_EVENT_SERVAC 0x3a
#define ERR_EVENT_PERMERR 0x3b
#define ERR_EVENT_Q_BIT 0x2
#define ERR_EVENT_MVN_OFFSET 16
#define ZPCI_MSI_VEC_BITS 11
#define ZPCI_MSI_VEC_MASK 0x7ff
#define ZPCI_MSI_ADDR 0xfe00000000000000ULL
#define ZPCI_SDMA_ADDR 0x100000000ULL
#define ZPCI_EDMA_ADDR 0x1ffffffffffffffULL
#define PAGE_SHIFT 12
#define PAGE_MASK (~(PAGE_SIZE-1))
#define PAGE_DEFAULT_ACC 0
#define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4)
/* I/O Translation Anchor (IOTA) */
enum ZpciIoatDtype {
ZPCI_IOTA_STO = 0,
ZPCI_IOTA_RTTO = 1,
ZPCI_IOTA_RSTO = 2,
ZPCI_IOTA_RFTO = 3,
ZPCI_IOTA_PFAA = 4,
ZPCI_IOTA_IOPFAA = 5,
ZPCI_IOTA_IOPTO = 7
};
#define ZPCI_IOTA_IOT_ENABLED 0x800ULL
#define ZPCI_IOTA_DT_ST (ZPCI_IOTA_STO << 2)
#define ZPCI_IOTA_DT_RT (ZPCI_IOTA_RTTO << 2)
#define ZPCI_IOTA_DT_RS (ZPCI_IOTA_RSTO << 2)
#define ZPCI_IOTA_DT_RF (ZPCI_IOTA_RFTO << 2)
#define ZPCI_IOTA_DT_PF (ZPCI_IOTA_PFAA << 2)
#define ZPCI_IOTA_FS_4K 0
#define ZPCI_IOTA_FS_1M 1
#define ZPCI_IOTA_FS_2G 2
#define ZPCI_KEY (PAGE_DEFAULT_KEY << 5)
#define ZPCI_IOTA_STO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_ST)
#define ZPCI_IOTA_RTTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RT)
#define ZPCI_IOTA_RSTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RS)
#define ZPCI_IOTA_RFTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RF)
#define ZPCI_IOTA_RFAA_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY |\
ZPCI_IOTA_DT_PF | ZPCI_IOTA_FS_2G)
/* I/O Region and segment tables */
#define ZPCI_INDEX_MASK 0x7ffULL
#define ZPCI_TABLE_TYPE_MASK 0xc
#define ZPCI_TABLE_TYPE_RFX 0xc
#define ZPCI_TABLE_TYPE_RSX 0x8
#define ZPCI_TABLE_TYPE_RTX 0x4
#define ZPCI_TABLE_TYPE_SX 0x0
#define ZPCI_TABLE_LEN_RFX 0x3
#define ZPCI_TABLE_LEN_RSX 0x3
#define ZPCI_TABLE_LEN_RTX 0x3
#define ZPCI_TABLE_OFFSET_MASK 0xc0
#define ZPCI_TABLE_SIZE 0x4000
#define ZPCI_TABLE_ALIGN ZPCI_TABLE_SIZE
#define ZPCI_TABLE_ENTRY_SIZE (sizeof(unsigned long))
#define ZPCI_TABLE_ENTRIES (ZPCI_TABLE_SIZE / ZPCI_TABLE_ENTRY_SIZE)
#define ZPCI_TABLE_BITS 11
#define ZPCI_PT_BITS 8
#define ZPCI_ST_SHIFT (ZPCI_PT_BITS + PAGE_SHIFT)
#define ZPCI_RT_SHIFT (ZPCI_ST_SHIFT + ZPCI_TABLE_BITS)
#define ZPCI_RTE_FLAG_MASK 0x3fffULL
#define ZPCI_RTE_ADDR_MASK (~ZPCI_RTE_FLAG_MASK)
#define ZPCI_STE_FLAG_MASK 0x7ffULL
#define ZPCI_STE_ADDR_MASK (~ZPCI_STE_FLAG_MASK)
/* I/O Page tables */
#define ZPCI_PTE_VALID_MASK 0x400
#define ZPCI_PTE_INVALID 0x400
#define ZPCI_PTE_VALID 0x000
#define ZPCI_PT_SIZE 0x800
#define ZPCI_PT_ALIGN ZPCI_PT_SIZE
#define ZPCI_PT_ENTRIES (ZPCI_PT_SIZE / ZPCI_TABLE_ENTRY_SIZE)
#define ZPCI_PT_MASK (ZPCI_PT_ENTRIES - 1)
#define ZPCI_PTE_FLAG_MASK 0xfffULL
#define ZPCI_PTE_ADDR_MASK (~ZPCI_PTE_FLAG_MASK)
/* Shared bits */
#define ZPCI_TABLE_VALID 0x00
#define ZPCI_TABLE_INVALID 0x20
#define ZPCI_TABLE_PROTECTED 0x200
#define ZPCI_TABLE_UNPROTECTED 0x000
#define ZPCI_TABLE_VALID_MASK 0x20
#define ZPCI_TABLE_PROT_MASK 0x200
typedef struct SeiContainer {
QTAILQ_ENTRY(SeiContainer) link;
uint32_t fid;
uint32_t fh;
uint8_t cc;
uint16_t pec;
uint64_t faddr;
uint32_t e;
} SeiContainer;
typedef struct PciCcdfErr {
uint32_t reserved1;
uint32_t fh;
uint32_t fid;
uint32_t e;
uint64_t faddr;
uint32_t reserved3;
uint16_t reserved4;
uint16_t pec;
} QEMU_PACKED PciCcdfErr;
typedef struct PciCcdfAvail {
uint32_t reserved1;
uint32_t fh;
uint32_t fid;
uint32_t reserved2;
uint32_t reserved3;
uint32_t reserved4;
uint32_t reserved5;
uint16_t reserved6;
uint16_t pec;
} QEMU_PACKED PciCcdfAvail;
typedef struct ChscSeiNt2Res {
uint16_t length;
uint16_t code;
uint16_t reserved1;
uint8_t reserved2;
uint8_t nt;
uint8_t flags;
uint8_t reserved3;
uint8_t reserved4;
uint8_t cc;
uint32_t reserved5[13];
uint8_t ccdf[4016];
} QEMU_PACKED ChscSeiNt2Res;
typedef struct PciCfgSccb {
SCCBHeader header;
uint8_t atype;
uint8_t reserved1;
uint16_t reserved2;
uint32_t aid;
} QEMU_PACKED PciCfgSccb;
typedef struct S390MsixInfo {
bool available;
uint8_t table_bar;
uint8_t pba_bar;
uint16_t entries;
uint32_t table_offset;
uint32_t pba_offset;
} S390MsixInfo;
typedef struct S390PCIBusDevice {
PCIDevice *pdev;
bool configured;
bool error_state;
bool lgstg_blocked;
uint32_t fh;
uint32_t fid;
uint64_t g_iota;
uint64_t pba;
uint64_t pal;
uint64_t fmb_addr;
uint8_t isc;
uint16_t noi;
uint8_t sum;
S390MsixInfo msix;
AdapterRoutes routes;
AddressSpace as;
MemoryRegion mr;
MemoryRegion iommu_mr;
} S390PCIBusDevice;
typedef struct S390pciState {
PCIHostState parent_obj;
S390PCIBusDevice pbdev[PCI_SLOT_MAX];
AddressSpace msix_notify_as;
MemoryRegion msix_notify_mr;
QTAILQ_HEAD(, SeiContainer) pending_sei;
} S390pciState;
int chsc_sei_nt2_get_event(void *res);
int chsc_sei_nt2_have_event(void);
void s390_pci_sclp_configure(int configure, SCCB *sccb);
void s390_pcihost_iommu_configure(S390PCIBusDevice *pbdev, bool enable);
S390PCIBusDevice *s390_pci_find_dev_by_idx(uint32_t idx);
S390PCIBusDevice *s390_pci_find_dev_by_fh(uint32_t fh);
S390PCIBusDevice *s390_pci_find_dev_by_fid(uint32_t fid);
#endif
Reference in New Issue View Git Blame Copy Permalink