diff options
| -rw-r--r-- | drivers/scsi/isci/core/sci_util.c | 16 | ||||
| -rw-r--r-- | drivers/scsi/isci/core/sci_util.h | 9 | ||||
| -rw-r--r-- | drivers/scsi/isci/core/scic_sds_request.c | 9 | ||||
| -rw-r--r-- | drivers/scsi/isci/core/scic_sds_request.h | 8 | ||||
| -rw-r--r-- | drivers/scsi/isci/core/scic_sds_stp_request.c | 148 | ||||
| -rw-r--r-- | drivers/scsi/isci/core/scic_sds_stp_request.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/isci/isci.h | 1 |
7 files changed, 84 insertions, 109 deletions
diff --git a/drivers/scsi/isci/core/sci_util.c b/drivers/scsi/isci/core/sci_util.c index 5cdd96f..03f919f 100644 --- a/drivers/scsi/isci/core/sci_util.c +++ b/drivers/scsi/isci/core/sci_util.c @@ -53,7 +53,9 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#include <linux/kernel.h> #include "sci_util.h" +#include "sci_environment.h" void scic_word_copy_with_swap( u32 *destination, @@ -68,3 +70,17 @@ void scic_word_copy_with_swap( } } +void *scic_request_get_virt_addr(struct scic_sds_request *sci_req, dma_addr_t phys_addr) +{ + struct isci_request *ireq = sci_object_get_association(sci_req); + dma_addr_t offset; + + BUG_ON(phys_addr < ireq->request_daddr); + + offset = phys_addr - ireq->request_daddr; + + BUG_ON(offset >= ireq->request_alloc_size); + + return (char *)ireq + offset; +} + diff --git a/drivers/scsi/isci/core/sci_util.h b/drivers/scsi/isci/core/sci_util.h index 9748c76..50c272e 100644 --- a/drivers/scsi/isci/core/sci_util.h +++ b/drivers/scsi/isci/core/sci_util.h @@ -57,6 +57,7 @@ #define _SCI_UTIL_H_ #include <linux/string.h> +#include "scic_sds_request.h" /** * SCIC_SWAP_DWORD() - @@ -96,9 +97,9 @@ * byte swap. * */ -void scic_word_copy_with_swap( - u32 *destination, - u32 *source, - u32 word_count); +void scic_word_copy_with_swap(u32 *destination, u32 *source, u32 word_count); + +void *scic_request_get_virt_addr(struct scic_sds_request *sds_request, + dma_addr_t phys_addr); #endif /* _SCI_UTIL_H_ */ diff --git a/drivers/scsi/isci/core/scic_sds_request.c b/drivers/scsi/isci/core/scic_sds_request.c index 2bd47f4..9fa45cd0 100644 --- a/drivers/scsi/isci/core/scic_sds_request.c +++ b/drivers/scsi/isci/core/scic_sds_request.c @@ -100,15 +100,6 @@ * **************************************************************************** */ /** - * scic_sds_request_get_user_request() - - * - * This is a helper macro to return the os handle for this request object. - */ -#define scic_sds_request_get_user_request(request) \ - ((request)->user_request) - - -/** * scic_ssp_io_request_get_object_size() - * * This macro returns the sizeof memory required to store the an SSP IO diff --git a/drivers/scsi/isci/core/scic_sds_request.h b/drivers/scsi/isci/core/scic_sds_request.h index 0691a75..60337e6 100644 --- a/drivers/scsi/isci/core/scic_sds_request.h +++ b/drivers/scsi/isci/core/scic_sds_request.h @@ -400,6 +400,14 @@ extern const struct scic_sds_io_request_state_handler scic_sds_smp_request_start (scu_sge).address_modifier = 0; \ } +/** + * scic_sds_request_get_user_request() - + * + * This is a helper macro to return the os handle for this request object. + */ +#define scic_sds_request_get_user_request(request) \ + ((request)->user_request) + /* * ***************************************************************************** * * CORE REQUEST PROTOTYPES diff --git a/drivers/scsi/isci/core/scic_sds_stp_request.c b/drivers/scsi/isci/core/scic_sds_stp_request.c index 6d280c0a..10f160e 100644 --- a/drivers/scsi/isci/core/scic_sds_stp_request.c +++ b/drivers/scsi/isci/core/scic_sds_stp_request.c @@ -486,45 +486,34 @@ void *scic_stp_io_request_get_d2h_reg_address( * - if there are more SGL element pairs - advance to the next pair and return * element A struct scu_sgl_element* */ -struct scu_sgl_element *scic_sds_stp_request_pio_get_next_sgl( - struct scic_sds_stp_request *this_request - ) { +struct scu_sgl_element *scic_sds_stp_request_pio_get_next_sgl(struct scic_sds_stp_request *stp_req) +{ struct scu_sgl_element *current_sgl; + struct scic_sds_request *sci_req = &stp_req->parent; + struct scic_sds_request_pio_sgl *pio_sgl = &stp_req->type.pio.request_current; - if (this_request->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A) { - if ( - (this_request->type.pio.request_current.sgl_pair->B.address_lower == 0) - && (this_request->type.pio.request_current.sgl_pair->B.address_upper == 0) - ) { + if (pio_sgl->sgl_set == SCU_SGL_ELEMENT_PAIR_A) { + if (pio_sgl->sgl_pair->B.address_lower == 0 && + pio_sgl->sgl_pair->B.address_upper == 0) { current_sgl = NULL; } else { - this_request->type.pio.request_current.sgl_set = SCU_SGL_ELEMENT_PAIR_B; - current_sgl = &(this_request->type.pio.request_current.sgl_pair->B); + pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_B; + current_sgl = &pio_sgl->sgl_pair->B; } } else { - if ( - (this_request->type.pio.request_current.sgl_pair->next_pair_lower == 0) - && (this_request->type.pio.request_current.sgl_pair->next_pair_upper == 0) - ) { + if (pio_sgl->sgl_pair->next_pair_lower == 0 && + pio_sgl->sgl_pair->next_pair_upper == 0) { current_sgl = NULL; } else { - dma_addr_t physical_address; - - sci_cb_make_physical_address( - physical_address, - this_request->type.pio.request_current.sgl_pair->next_pair_upper, - this_request->type.pio.request_current.sgl_pair->next_pair_lower - ); + u64 phys_addr; - this_request->type.pio.request_current.sgl_pair = - (struct scu_sgl_element_pair *)scic_cb_get_virtual_address( - this_request->parent.owning_controller, - physical_address - ); + phys_addr = pio_sgl->sgl_pair->next_pair_upper; + phys_addr <<= 32; + phys_addr |= pio_sgl->sgl_pair->next_pair_lower; - this_request->type.pio.request_current.sgl_set = SCU_SGL_ELEMENT_PAIR_A; - - current_sgl = &(this_request->type.pio.request_current.sgl_pair->A); + pio_sgl->sgl_pair = scic_request_get_virt_addr(sci_req, phys_addr); + pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_A; + current_sgl = &pio_sgl->sgl_pair->A; } } @@ -882,82 +871,51 @@ static enum sci_status scic_sds_stp_request_pio_data_out_transmit_data( /** * - * @this_request: The request that is used for the SGL processing. + * @stp_request: The request that is used for the SGL processing. * @data_buffer: The buffer of data to be copied. * @length: The length of the data transfer. * * Copy the data from the buffer for the length specified to the IO reqeust SGL * specified data region. enum sci_status */ -static enum sci_status scic_sds_stp_request_pio_data_in_copy_data_buffer( - struct scic_sds_stp_request *this_request, - u8 *data_buffer, - u32 length) +static enum sci_status +scic_sds_stp_request_pio_data_in_copy_data_buffer(struct scic_sds_stp_request *stp_req, + u8 *data_buf, u32 len) { - enum sci_status status; - struct scu_sgl_element *current_sgl; - u32 sgl_offset; - u32 data_offset; - u8 *source_address; - u8 *destination_address; - u32 copy_length; - - /* Initial setup to get the current working SGL and the offset within the buffer */ - current_sgl = - (this_request->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A) ? - &(this_request->type.pio.request_current.sgl_pair->A) : - &(this_request->type.pio.request_current.sgl_pair->B); - - sgl_offset = this_request->type.pio.request_current.sgl_offset; - - source_address = data_buffer; - data_offset = 0; - - status = SCI_SUCCESS; - - /* While we are still doing Ok and there is more data to transfer */ - while ( - (length > 0) - && (status == SCI_SUCCESS) - ) { - if (current_sgl->length == sgl_offset) { - /* This SGL has been exauhasted so we need to get the next SGL */ - current_sgl = scic_sds_stp_request_pio_get_next_sgl(this_request); - - if (current_sgl == NULL) - status = SCI_FAILURE; - else - sgl_offset = 0; - } else { - dma_addr_t physical_address; - - sci_cb_make_physical_address( - physical_address, - current_sgl->address_upper, - current_sgl->address_lower - ); - - destination_address = (u8 *)scic_cb_get_virtual_address( - this_request->parent.owning_controller, - physical_address - ); - - source_address += data_offset; - destination_address += sgl_offset; - - copy_length = min(length, current_sgl->length - sgl_offset); - - memcpy(destination_address, source_address, copy_length); - - length -= copy_length; - sgl_offset += copy_length; - data_offset += copy_length; + struct scic_sds_request *sci_req; + struct isci_request *ireq; + u8 *src_addr; + int copy_len; + struct sas_task *task; + struct scatterlist *sg; + void *kaddr; + int total_len = len; + + sci_req = &stp_req->parent; + ireq = scic_sds_request_get_user_request(sci_req); + task = isci_request_access_task(ireq); + src_addr = data_buf; + + if (task->num_scatter > 0) { + sg = task->scatter; + + while (total_len > 0) { + struct page *page = sg_page(sg); + + copy_len = min_t(int, total_len, sg_dma_len(sg)); + kaddr = kmap_atomic(page, KM_IRQ0); + memcpy(kaddr + sg->offset, src_addr, copy_len); + kunmap_atomic(kaddr, KM_IRQ0); + total_len -= copy_len; + src_addr += copy_len; + sg = sg_next(sg); } + } else { + BUG_ON(task->total_xfer_len < total_len); + memcpy(task->scatter, src_addr, total_len); } - this_request->type.pio.request_current.sgl_offset = sgl_offset; - - return status; + return SCI_SUCCESS; } /** diff --git a/drivers/scsi/isci/core/scic_sds_stp_request.h b/drivers/scsi/isci/core/scic_sds_stp_request.h index 4a4c68a..c950bb3 100644 --- a/drivers/scsi/isci/core/scic_sds_stp_request.h +++ b/drivers/scsi/isci/core/scic_sds_stp_request.h @@ -116,7 +116,7 @@ struct scic_sds_stp_request { */ u8 sat_protocol; - struct { + struct scic_sds_request_pio_sgl { struct scu_sgl_element_pair *sgl_pair; u8 sgl_set; u32 sgl_offset; diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h index 6c79b29..225764f 100644 --- a/drivers/scsi/isci/isci.h +++ b/drivers/scsi/isci/isci.h @@ -84,6 +84,7 @@ #include "host.h" #include "timers.h" #include "sci_status.h" +#include "request.h" extern struct kmem_cache *isci_kmem_cache; extern struct isci_firmware *isci_firmware; |
