From 09a1093a292aa88af836f4fb3b604af9aa1ece3d Mon Sep 17 00:00:00 2001 From: John Soni Jose Date: Sat, 20 Oct 2012 04:44:23 +0530 Subject: [PATCH] [SCSI] be2iscsi: Fix support for V2 version of WRB. Latest adapters use the V2 version of WRB. This fix checks for the adapter type and uses appropriate version of WRB. Signed-off-by: John Soni Jose Signed-off-by: Jayamohan Kallickal Reviewed-by: Mike Christie Signed-off-by: James Bottomley --- drivers/scsi/be2iscsi/be_main.c | 265 ++++++++++++++++++++++++++++++++++------ drivers/scsi/be2iscsi/be_main.h | 51 +++++++- 2 files changed, 277 insertions(+), 39 deletions(-) diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index 8a142ce..6aef05f 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -2153,6 +2153,101 @@ static int be_iopoll(struct blk_iopoll *iop, int budget) } static void +hwi_write_sgl_v2(struct iscsi_wrb *pwrb, struct scatterlist *sg, + unsigned int num_sg, struct beiscsi_io_task *io_task) +{ + struct iscsi_sge *psgl; + unsigned int sg_len, index; + unsigned int sge_len = 0; + unsigned long long addr; + struct scatterlist *l_sg; + unsigned int offset; + + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_lo, pwrb, + io_task->bhs_pa.u.a32.address_lo); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_hi, pwrb, + io_task->bhs_pa.u.a32.address_hi); + + l_sg = sg; + for (index = 0; (index < num_sg) && (index < 2); index++, + sg = sg_next(sg)) { + if (index == 0) { + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge0_addr_lo, pwrb, + lower_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge0_addr_hi, pwrb, + upper_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge0_len, pwrb, + sg_len); + sge_len = sg_len; + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_r2t_offset, + pwrb, sge_len); + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge1_addr_lo, pwrb, + lower_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge1_addr_hi, pwrb, + upper_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge1_len, pwrb, + sg_len); + } + } + psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag; + memset(psgl, 0, sizeof(*psgl) * BE2_SGE); + + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2); + + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, + io_task->bhs_pa.u.a32.address_hi); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, + io_task->bhs_pa.u.a32.address_lo); + + if (num_sg == 1) { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb, + 1); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb, + 0); + } else if (num_sg == 2) { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb, + 0); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb, + 1); + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb, + 0); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb, + 0); + } + + sg = l_sg; + psgl++; + psgl++; + offset = 0; + for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) { + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, + lower_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, + upper_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len); + AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset); + AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0); + offset += sg_len; + } + psgl--; + AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1); +} + +static void hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg, unsigned int num_sg, struct beiscsi_io_task *io_task) { @@ -2251,6 +2346,7 @@ static void hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task) struct beiscsi_io_task *io_task = task->dd_data; struct beiscsi_conn *beiscsi_conn = io_task->conn; struct beiscsi_hba *phba = beiscsi_conn->phba; + uint8_t dsp_value = 0; io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2; AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb, @@ -2259,18 +2355,27 @@ static void hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task) io_task->bhs_pa.u.a32.address_hi); if (task->data) { - if (task->data_count) { - AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1); + + /* Check for the data_count */ + dsp_value = (task->data_count) ? 1 : 0; + + if (chip_skh_r(phba->pcidev)) + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, + pwrb, dsp_value); + else + AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, + pwrb, dsp_value); + + /* Map addr only if there is data_count */ + if (dsp_value) { io_task->mtask_addr = pci_map_single(phba->pcidev, task->data, task->data_count, PCI_DMA_TODEVICE); - io_task->mtask_data_count = task->data_count; - } else { - AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0); + } else io_task->mtask_addr = 0; - } + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb, lower_32_bits(io_task->mtask_addr)); AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb, @@ -4241,6 +4346,62 @@ free_hndls: io_task->cmd_bhs = NULL; return -ENOMEM; } +int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg, + unsigned int num_sg, unsigned int xferlen, + unsigned int writedir) +{ + + struct beiscsi_io_task *io_task = task->dd_data; + struct iscsi_conn *conn = task->conn; + struct beiscsi_conn *beiscsi_conn = conn->dd_data; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct iscsi_wrb *pwrb = NULL; + unsigned int doorbell = 0; + + pwrb = io_task->pwrb_handle->pwrb; + memset(pwrb, 0, sizeof(*pwrb)); + + io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0; + io_task->bhs_len = sizeof(struct be_cmd_bhs); + + if (writedir) { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb, + INI_WR_CMD); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 1); + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb, + INI_RD_CMD); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 0); + } + + io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb_v2, + type, pwrb); + + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, lun, pwrb, + cpu_to_be16(*(unsigned short *) + &io_task->cmd_bhs->iscsi_hdr.lun)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, xferlen); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb, + io_task->pwrb_handle->wrb_index); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb, + be32_to_cpu(task->cmdsn)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb, + io_task->psgl_handle->sgl_index); + + hwi_write_sgl_v2(pwrb, sg, num_sg, io_task); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb, + io_task->pwrb_handle->nxt_wrb_index); + + be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb)); + + doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK; + doorbell |= (io_task->pwrb_handle->wrb_index & + DB_DEF_PDU_WRB_INDEX_MASK) << + DB_DEF_PDU_WRB_INDEX_SHIFT; + doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT; + iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET); + return 0; +} static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg, unsigned int num_sg, unsigned int xferlen, @@ -4268,6 +4429,9 @@ static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg, AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0); } + io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb, + type, pwrb); + AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb, cpu_to_be16(*(unsigned short *) &io_task->cmd_bhs->iscsi_hdr.lun)); @@ -4303,55 +4467,75 @@ static int beiscsi_mtask(struct iscsi_task *task) struct iscsi_wrb *pwrb = NULL; unsigned int doorbell = 0; unsigned int cid; + unsigned int pwrb_typeoffset = 0; cid = beiscsi_conn->beiscsi_conn_cid; pwrb = io_task->pwrb_handle->pwrb; memset(pwrb, 0, sizeof(*pwrb)); - AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, - be32_to_cpu(task->cmdsn)); - AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb, - io_task->pwrb_handle->wrb_index); - AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb, - io_task->psgl_handle->sgl_index); + + if (chip_skh_r(phba->pcidev)) { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb, + be32_to_cpu(task->cmdsn)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb, + io_task->pwrb_handle->wrb_index); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb, + io_task->psgl_handle->sgl_index); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, + task->data_count); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb, + io_task->pwrb_handle->nxt_wrb_index); + pwrb_typeoffset = SKH_WRB_TYPE_OFFSET; + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, + be32_to_cpu(task->cmdsn)); + AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb, + io_task->pwrb_handle->wrb_index); + AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb, + io_task->psgl_handle->sgl_index); + AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, + task->data_count); + AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb, + io_task->pwrb_handle->nxt_wrb_index); + pwrb_typeoffset = BE_WRB_TYPE_OFFSET; + } + switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { case ISCSI_OP_LOGIN: - AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, - TGT_DM_CMD); - AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0); AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1); + ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset); hwi_write_buffer(pwrb, task); break; case ISCSI_OP_NOOP_OUT: if (task->hdr->ttt != ISCSI_RESERVED_TAG) { - AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, - TGT_DM_CMD); - AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, - pwrb, 0); - AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 1); + ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset); + if (chip_skh_r(phba->pcidev)) + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + dmsg, pwrb, 1); + else + AMAP_SET_BITS(struct amap_iscsi_wrb, + dmsg, pwrb, 1); } else { - AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, - INI_RD_CMD); - AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0); + ADAPTER_SET_WRB_TYPE(pwrb, INI_RD_CMD, pwrb_typeoffset); + if (chip_skh_r(phba->pcidev)) + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + dmsg, pwrb, 0); + else + AMAP_SET_BITS(struct amap_iscsi_wrb, + dmsg, pwrb, 0); } hwi_write_buffer(pwrb, task); break; case ISCSI_OP_TEXT: - AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, - TGT_DM_CMD); - AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0); + ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset); hwi_write_buffer(pwrb, task); break; case ISCSI_OP_SCSI_TMFUNC: - AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, - INI_TMF_CMD); - AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0); + ADAPTER_SET_WRB_TYPE(pwrb, INI_TMF_CMD, pwrb_typeoffset); hwi_write_buffer(pwrb, task); break; case ISCSI_OP_LOGOUT: - AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0); - AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, - HWH_TYPE_LOGOUT); + ADAPTER_SET_WRB_TYPE(pwrb, HWH_TYPE_LOGOUT, pwrb_typeoffset); hwi_write_buffer(pwrb, task); break; @@ -4363,11 +4547,10 @@ static int beiscsi_mtask(struct iscsi_task *task) return -EINVAL; } - AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, - task->data_count); - AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb, - io_task->pwrb_handle->nxt_wrb_index); - be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb)); + /* Set the task type */ + io_task->wrb_type = (chip_skh_r(phba->pcidev)) ? + AMAP_GET_BITS(struct amap_iscsi_wrb_v2, type, pwrb) : + AMAP_GET_BITS(struct amap_iscsi_wrb, type, pwrb); doorbell |= cid & DB_WRB_POST_CID_MASK; doorbell |= (io_task->pwrb_handle->wrb_index & @@ -4381,10 +4564,13 @@ static int beiscsi_task_xmit(struct iscsi_task *task) { struct beiscsi_io_task *io_task = task->dd_data; struct scsi_cmnd *sc = task->sc; + struct beiscsi_hba *phba = NULL; struct scatterlist *sg; int num_sg; unsigned int writedir = 0, xferlen = 0; + phba = ((struct beiscsi_conn *)task->conn->dd_data)->phba; + if (!sc) return beiscsi_mtask(task); @@ -4407,7 +4593,7 @@ static int beiscsi_task_xmit(struct iscsi_task *task) else writedir = 0; - return beiscsi_iotask(task, sg, num_sg, xferlen, writedir); + return phba->iotask_fn(task, sg, num_sg, xferlen, writedir); } /** @@ -4618,13 +4804,16 @@ static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev, case OC_DEVICE_ID1: case OC_DEVICE_ID2: phba->generation = BE_GEN2; + phba->iotask_fn = beiscsi_iotask; break; case BE_DEVICE_ID2: case OC_DEVICE_ID3: phba->generation = BE_GEN3; + phba->iotask_fn = beiscsi_iotask; break; case OC_SKH_ID1: phba->generation = BE_GEN4; + phba->iotask_fn = beiscsi_iotask_v2; default: phba->generation = 0; } diff --git a/drivers/scsi/be2iscsi/be_main.h b/drivers/scsi/be2iscsi/be_main.h index 2c9cba2..8632927 100644 --- a/drivers/scsi/be2iscsi/be_main.h +++ b/drivers/scsi/be2iscsi/be_main.h @@ -344,7 +344,10 @@ struct beiscsi_hba { struct invalidate_command_table inv_tbl[128]; unsigned int attr_log_enable; - + int (*iotask_fn)(struct iscsi_task *, + struct scatterlist *sg, + uint32_t num_sg, uint32_t xferlen, + uint32_t writedir); }; struct beiscsi_session { @@ -418,6 +421,7 @@ struct beiscsi_io_task { unsigned short bhs_len; dma_addr_t mtask_addr; uint32_t mtask_data_count; + uint8_t wrb_type; }; struct be_nonio_bhs { @@ -625,6 +629,11 @@ struct iscsi_wrb { } __packed; #define WRB_TYPE_MASK 0xF0000000 +#define SKH_WRB_TYPE_OFFSET 27 +#define BE_WRB_TYPE_OFFSET 28 + +#define ADAPTER_SET_WRB_TYPE(pwrb, wrb_type, type_offset) \ + (pwrb->dw[0] |= (wrb_type << type_offset)) /** * Pseudo amap definition in which each bit of the actual structure is defined @@ -671,6 +680,46 @@ struct amap_iscsi_wrb { } __packed; +struct amap_iscsi_wrb_v2 { + u8 r2t_exp_dtl[25]; /* DWORD 0 */ + u8 rsvd0[2]; /* DWORD 0*/ + u8 type[5]; /* DWORD 0 */ + u8 ptr2nextwrb[8]; /* DWORD 1 */ + u8 wrb_idx[8]; /* DWORD 1 */ + u8 lun[16]; /* DWORD 1 */ + u8 sgl_idx[16]; /* DWORD 2 */ + u8 ref_sgl_icd_idx[16]; /* DWORD 2 */ + u8 exp_data_sn[32]; /* DWORD 3 */ + u8 iscsi_bhs_addr_hi[32]; /* DWORD 4 */ + u8 iscsi_bhs_addr_lo[32]; /* DWORD 5 */ + u8 cq_id[16]; /* DWORD 6 */ + u8 rsvd1[16]; /* DWORD 6 */ + u8 cmdsn_itt[32]; /* DWORD 7 */ + u8 sge0_addr_hi[32]; /* DWORD 8 */ + u8 sge0_addr_lo[32]; /* DWORD 9 */ + u8 sge0_offset[24]; /* DWORD 10 */ + u8 rsvd2[7]; /* DWORD 10 */ + u8 sge0_last; /* DWORD 10 */ + u8 sge0_len[17]; /* DWORD 11 */ + u8 rsvd3[7]; /* DWORD 11 */ + u8 diff_enbl; /* DWORD 11 */ + u8 u_run; /* DWORD 11 */ + u8 o_run; /* DWORD 11 */ + u8 invalid; /* DWORD 11 */ + u8 dsp; /* DWORD 11 */ + u8 dmsg; /* DWORD 11 */ + u8 rsvd4; /* DWORD 11 */ + u8 lt; /* DWORD 11 */ + u8 sge1_addr_hi[32]; /* DWORD 12 */ + u8 sge1_addr_lo[32]; /* DWORD 13 */ + u8 sge1_r2t_offset[24]; /* DWORD 14 */ + u8 rsvd5[7]; /* DWORD 14 */ + u8 sge1_last; /* DWORD 14 */ + u8 sge1_len[17]; /* DWORD 15 */ + u8 rsvd6[15]; /* DWORD 15 */ +} __packed; + + struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid); void free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle); -- 2.7.4