mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![Sebastian Ott](/assets/img/avatar_default.png)
Add support for the Internal Shared Memory vPCI Adapter. This driver implements the interfaces of the SMC-D protocol. Signed-off-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
221 lines
3.6 KiB
C
221 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef S390_ISM_H
|
|
#define S390_ISM_H
|
|
|
|
#include <linux/spinlock.h>
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <net/smc.h>
|
|
|
|
#define UTIL_STR_LEN 16
|
|
|
|
/*
|
|
* Do not use the first word of the DMB bits to ensure 8 byte aligned access.
|
|
*/
|
|
#define ISM_DMB_WORD_OFFSET 1
|
|
#define ISM_DMB_BIT_OFFSET (ISM_DMB_WORD_OFFSET * 32)
|
|
#define ISM_NR_DMBS 1920
|
|
|
|
#define ISM_REG_SBA 0x1
|
|
#define ISM_REG_IEQ 0x2
|
|
#define ISM_READ_GID 0x3
|
|
#define ISM_ADD_VLAN_ID 0x4
|
|
#define ISM_DEL_VLAN_ID 0x5
|
|
#define ISM_SET_VLAN 0x6
|
|
#define ISM_RESET_VLAN 0x7
|
|
#define ISM_QUERY_INFO 0x8
|
|
#define ISM_QUERY_RGID 0x9
|
|
#define ISM_REG_DMB 0xA
|
|
#define ISM_UNREG_DMB 0xB
|
|
#define ISM_SIGNAL_IEQ 0xE
|
|
#define ISM_UNREG_SBA 0x11
|
|
#define ISM_UNREG_IEQ 0x12
|
|
|
|
#define ISM_ERROR 0xFFFF
|
|
|
|
struct ism_req_hdr {
|
|
u32 cmd;
|
|
u16 : 16;
|
|
u16 len;
|
|
};
|
|
|
|
struct ism_resp_hdr {
|
|
u32 cmd;
|
|
u16 ret;
|
|
u16 len;
|
|
};
|
|
|
|
union ism_reg_sba {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
u64 sba;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
} response;
|
|
} __aligned(16);
|
|
|
|
union ism_reg_ieq {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
u64 ieq;
|
|
u64 len;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
} response;
|
|
} __aligned(16);
|
|
|
|
union ism_read_gid {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
u64 gid;
|
|
} response;
|
|
} __aligned(16);
|
|
|
|
union ism_qi {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
u32 version;
|
|
u32 max_len;
|
|
u64 ism_state;
|
|
u64 my_gid;
|
|
u64 sba;
|
|
u64 ieq;
|
|
u32 ieq_len;
|
|
u32 : 32;
|
|
u32 dmbs_owned;
|
|
u32 dmbs_used;
|
|
u32 vlan_required;
|
|
u32 vlan_nr_ids;
|
|
u16 vlan_id[64];
|
|
} response;
|
|
} __aligned(64);
|
|
|
|
union ism_query_rgid {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
u64 rgid;
|
|
u32 vlan_valid;
|
|
u32 vlan_id;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
} response;
|
|
} __aligned(16);
|
|
|
|
union ism_reg_dmb {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
u64 dmb;
|
|
u32 dmb_len;
|
|
u32 sba_idx;
|
|
u32 vlan_valid;
|
|
u32 vlan_id;
|
|
u64 rgid;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
u64 dmb_tok;
|
|
} response;
|
|
} __aligned(32);
|
|
|
|
union ism_sig_ieq {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
u64 rgid;
|
|
u32 trigger_irq;
|
|
u32 event_code;
|
|
u64 info;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
} response;
|
|
} __aligned(32);
|
|
|
|
union ism_unreg_dmb {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
u64 dmb_tok;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
} response;
|
|
} __aligned(16);
|
|
|
|
union ism_cmd_simple {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
} response;
|
|
} __aligned(8);
|
|
|
|
union ism_set_vlan_id {
|
|
struct {
|
|
struct ism_req_hdr hdr;
|
|
u64 vlan_id;
|
|
} request;
|
|
struct {
|
|
struct ism_resp_hdr hdr;
|
|
} response;
|
|
} __aligned(16);
|
|
|
|
struct ism_eq_header {
|
|
u64 idx;
|
|
u64 ieq_len;
|
|
u64 entry_len;
|
|
u64 : 64;
|
|
};
|
|
|
|
struct ism_eq {
|
|
struct ism_eq_header header;
|
|
struct smcd_event entry[15];
|
|
};
|
|
|
|
struct ism_sba {
|
|
u32 s : 1; /* summary bit */
|
|
u32 e : 1; /* event bit */
|
|
u32 : 30;
|
|
u32 dmb_bits[ISM_NR_DMBS / 32];
|
|
u32 reserved[3];
|
|
u16 dmbe_mask[ISM_NR_DMBS];
|
|
};
|
|
|
|
struct ism_dev {
|
|
spinlock_t lock;
|
|
struct pci_dev *pdev;
|
|
struct smcd_dev *smcd;
|
|
|
|
void __iomem *ctl;
|
|
|
|
struct ism_sba *sba;
|
|
dma_addr_t sba_dma_addr;
|
|
DECLARE_BITMAP(sba_bitmap, ISM_NR_DMBS);
|
|
|
|
struct ism_eq *ieq;
|
|
dma_addr_t ieq_dma_addr;
|
|
|
|
int ieq_idx;
|
|
};
|
|
|
|
#define ISM_CREATE_REQ(dmb, idx, sf, offset) \
|
|
((dmb) | (idx) << 24 | (sf) << 23 | (offset))
|
|
|
|
static inline int __ism_move(struct ism_dev *ism, u64 dmb_req, void *data,
|
|
unsigned int size)
|
|
{
|
|
struct zpci_dev *zdev = to_zpci(ism->pdev);
|
|
u64 req = ZPCI_CREATE_REQ(zdev->fh, 0, size);
|
|
|
|
return zpci_write_block(req, data, dmb_req);
|
|
}
|
|
|
|
#endif /* S390_ISM_H */
|