Add functionality to init slot indexing. Slot indexing is for the host to track which slots (or tags) are free and which are used.
Signed-off-by: John Garry <[email protected]> --- drivers/scsi/hisi_sas/Makefile | 2 +- drivers/scsi/hisi_sas/hisi_sas.h | 2 ++ drivers/scsi/hisi_sas/hisi_sas_init.c | 2 ++ drivers/scsi/hisi_sas/hisi_sas_main.c | 28 ++++++++++++++++++++++++++++ 4 files changed, 33 insertions(+), 1 deletion(-) create mode 100644 drivers/scsi/hisi_sas/hisi_sas_main.c diff --git a/drivers/scsi/hisi_sas/Makefile b/drivers/scsi/hisi_sas/Makefile index 63c3c4d..33f30e8 100644 --- a/drivers/scsi/hisi_sas/Makefile +++ b/drivers/scsi/hisi_sas/Makefile @@ -1,2 +1,2 @@ obj-$(CONFIG_SCSI_HISI_SAS) += hisi_sas.o -hisi_sas-y+= hisi_sas_init.o +hisi_sas-y+= hisi_sas_init.o hisi_sas_main.o diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 2c15036..929c513 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -257,4 +257,6 @@ union hisi_sas_command_table { struct hisi_sas_command_table_smp smp; struct hisi_sas_command_table_stp stp; }; + +void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba); #endif diff --git a/drivers/scsi/hisi_sas/hisi_sas_init.c b/drivers/scsi/hisi_sas/hisi_sas_init.c index 0116782..38b9ed2 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_init.c +++ b/drivers/scsi/hisi_sas/hisi_sas_init.c @@ -131,6 +131,8 @@ static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) goto err_out; memset(hisi_hba->sata_breakpoint, 0, s); + hisi_sas_slot_index_init(hisi_hba); + return 0; err_out: return -ENOMEM; diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c new file mode 100644 index 0000000..721412e --- /dev/null +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2015 Linaro Ltd. + * Copyright (c) 2015 Hisilicon Limited. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include "hisi_sas.h" + + +static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) +{ + void *bitmap = hisi_hba->slot_index_tags; + + clear_bit(slot_idx, bitmap); +} + +void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) +{ + int i; + + for (i = 0; i < hisi_hba->slot_index_count; ++i) + hisi_sas_slot_index_clear(hisi_hba, i); +} -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
