[6/9] scsi_transport_spi: Make spi_execute() accept a request queue pointer

Message ID	20200906012219.17893-7-bvanassche@acm.org (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=a8U3=CP=vger.kernel.org=linux-scsi-owner@kernel.org> From: Bart Van Assche <bvanassche@acm.org> To: Jens Axboe <axboe@kernel.dk>, "Martin K . Petersen" <martin.petersen@oracle.com>, "James E . J . Bottomley" <jejb@linux.vnet.ibm.com> Cc: linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>, linux-scsi@vger.kernel.org, Alan Stern <stern@rowland.harvard.edu>, Bart Van Assche <bvanassche@acm.org>, James Bottomley <James.Bottomley@HansenPartnership.com>, Woody Suwalski <terraluna977@gmail.com>, Can Guo <cang@codeaurora.org>, Stanley Chu <stanley.chu@mediatek.com>, Ming Lei <ming.lei@redhat.com>, "Rafael J . Wysocki" <rafael.j.wysocki@intel.com> Subject: [PATCH 6/9] scsi_transport_spi: Make spi_execute() accept a request queue pointer Date: Sat, 5 Sep 2020 18:22:16 -0700 Message-Id: <20200906012219.17893-7-bvanassche@acm.org> In-Reply-To: <20200906012219.17893-1-bvanassche@acm.org> References: <20200906012219.17893-1-bvanassche@acm.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk
Series	Rework runtime suspend and SCSI domain validation \| expand [0/9] Rework runtime suspend and SCSI domain validation [1/9] block: Fix a race in the runtime power management code [2/9] ide: Do not set the RQF_PREEMPT flag for sense requests [3/9] scsi: Pass a request queue pointer to __scsi_execute() [4/9] scsi: Rework scsi_mq_alloc_queue() [5/9] scsi: Do not wait for a request in scsi_eh_lock_door() [6/9] scsi_transport_spi: Make spi_execute() accept a request queue pointer [7/9] scsi_transport_spi: Freeze request queues instead of quiescing [8/9] block, scsi, ide: Only process PM requests if rpm_status != RPM_ACTIVE [9/9] block: Do not accept any requests while suspended

diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index f3d5b1bbd5aa..959990f66865 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -104,7 +104,7 @@ static int sprint_frac(char *dest, int value, int denom) return result; } -static int spi_execute(struct scsi_device *sdev, const void *cmd, +static int spi_execute(struct request_queue *q, const void *cmd, enum dma_data_direction dir, void *buffer, unsigned bufflen, struct scsi_sense_hdr *sshdr) @@ -117,7 +117,7 @@ static int spi_execute(struct scsi_device *sdev, const void *cmd, sshdr = &sshdr_tmp; for(i = 0; i < DV_RETRIES; i++) { - result = scsi_execute(sdev, cmd, dir, buffer, bufflen, sense, + result = __scsi_execute(q, cmd, dir, buffer, bufflen, sense, sshdr, DV_TIMEOUT, /* retries */ 1, REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | @@ -620,13 +620,14 @@ enum spi_compare_returns { /* This is for read/write Domain Validation: If the device supports * an echo buffer, we do read/write tests to it */ static enum spi_compare_returns -spi_dv_device_echo_buffer(struct scsi_device *sdev, u8 *buffer, - u8 *ptr, const int retries) +spi_dv_device_echo_buffer(struct scsi_device *sdev, struct request_queue *q, + u8 *buffer, u8 *ptr, const int retries) { int len = ptr - buffer; int j, k, r, result; unsigned int pattern = 0x0000ffff; struct scsi_sense_hdr sshdr; + enum scsi_device_state sdev_state = sdev->sdev_state; const char spi_write_buffer[] = { WRITE_BUFFER, 0x0a, 0, 0, 0, 0, 0, len >> 8, len & 0xff, 0 @@ -671,11 +672,10 @@ spi_dv_device_echo_buffer(struct scsi_device *sdev, u8 *buffer, } for (r = 0; r < retries; r++) { - result = spi_execute(sdev, spi_write_buffer, DMA_TO_DEVICE, + result = spi_execute(q, spi_write_buffer, DMA_TO_DEVICE, buffer, len, &sshdr); if(result || !scsi_device_online(sdev)) { - - scsi_device_set_state(sdev, SDEV_QUIESCE); + scsi_device_set_state(sdev, sdev_state); if (scsi_sense_valid(&sshdr) && sshdr.sense_key == ILLEGAL_REQUEST /* INVALID FIELD IN CDB */ @@ -693,9 +693,9 @@ spi_dv_device_echo_buffer(struct scsi_device *sdev, u8 *buffer, } memset(ptr, 0, len); - spi_execute(sdev, spi_read_buffer, DMA_FROM_DEVICE, - ptr, len, NULL); - scsi_device_set_state(sdev, SDEV_QUIESCE); + spi_execute(q, spi_read_buffer, DMA_FROM_DEVICE, ptr, len, + NULL); + scsi_device_set_state(sdev, sdev_state); if (memcmp(buffer, ptr, len) != 0) return SPI_COMPARE_FAILURE; @@ -706,11 +706,12 @@ spi_dv_device_echo_buffer(struct scsi_device *sdev, u8 *buffer, /* This is for the simplest form of Domain Validation: a read test * on the inquiry data from the device */ static enum spi_compare_returns -spi_dv_device_compare_inquiry(struct scsi_device *sdev, u8 *buffer, - u8 *ptr, const int retries) +spi_dv_device_compare_inquiry(struct scsi_device *sdev, struct request_queue *q, + u8 *buffer, u8 *ptr, const int retries) { int r, result; const int len = sdev->inquiry_len; + enum scsi_device_state sdev_state = sdev->sdev_state; const char spi_inquiry[] = { INQUIRY, 0, 0, 0, len, 0 }; @@ -718,11 +719,11 @@ spi_dv_device_compare_inquiry(struct scsi_device *sdev, u8 *buffer, for (r = 0; r < retries; r++) { memset(ptr, 0, len); - result = spi_execute(sdev, spi_inquiry, DMA_FROM_DEVICE, - ptr, len, NULL); + result = spi_execute(q, spi_inquiry, DMA_FROM_DEVICE, ptr, len, + NULL); if(result || !scsi_device_online(sdev)) { - scsi_device_set_state(sdev, SDEV_QUIESCE); + scsi_device_set_state(sdev, sdev_state); return SPI_COMPARE_FAILURE; } @@ -742,9 +743,10 @@ spi_dv_device_compare_inquiry(struct scsi_device *sdev, u8 *buffer, } static enum spi_compare_returns -spi_dv_retrain(struct scsi_device *sdev, u8 *buffer, u8 *ptr, - enum spi_compare_returns - (*compare_fn)(struct scsi_device *, u8 *, u8 *, int)) +spi_dv_retrain(struct scsi_device *sdev, struct request_queue *q, u8 *buffer, + u8 *ptr, enum spi_compare_returns + (*compare_fn)(struct scsi_device *, struct request_queue *, + u8 *, u8 *, int)) { struct spi_internal *i = to_spi_internal(sdev->host->transportt); struct scsi_target *starget = sdev->sdev_target; @@ -754,7 +756,7 @@ spi_dv_retrain(struct scsi_device *sdev, u8 *buffer, u8 *ptr, for (;;) { int newperiod; - retval = compare_fn(sdev, buffer, ptr, DV_LOOPS); + retval = compare_fn(sdev, q, buffer, ptr, DV_LOOPS); if (retval == SPI_COMPARE_SUCCESS || retval == SPI_COMPARE_SKIP_TEST) @@ -800,7 +802,8 @@ spi_dv_retrain(struct scsi_device *sdev, u8 *buffer, u8 *ptr, } static int -spi_dv_device_get_echo_buffer(struct scsi_device *sdev, u8 *buffer) +spi_dv_device_get_echo_buffer(struct scsi_device *sdev, + struct request_queue *q, u8 *buffer) { int l, result; @@ -824,8 +827,8 @@ spi_dv_device_get_echo_buffer(struct scsi_device *sdev, u8 *buffer) * (reservation conflict, device not ready, etc) just * skip the write tests */ for (l = 0; ; l++) { - result = spi_execute(sdev, spi_test_unit_ready, DMA_NONE, - NULL, 0, NULL); + result = spi_execute(q, spi_test_unit_ready, DMA_NONE, NULL, 0, + NULL); if(result) { if(l >= 3) @@ -836,8 +839,8 @@ spi_dv_device_get_echo_buffer(struct scsi_device *sdev, u8 *buffer) } } - result = spi_execute(sdev, spi_read_buffer_descriptor, - DMA_FROM_DEVICE, buffer, 4, NULL); + result = spi_execute(q, spi_read_buffer_descriptor, DMA_FROM_DEVICE, + buffer, 4, NULL); if (result) /* Device has no echo buffer */ @@ -847,7 +850,8 @@ spi_dv_device_get_echo_buffer(struct scsi_device *sdev, u8 *buffer) } static void -spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer) +spi_dv_device_internal(struct scsi_device *sdev, struct request_queue *q, + u8 *buffer) { struct spi_internal *i = to_spi_internal(sdev->host->transportt); struct scsi_target *starget = sdev->sdev_target; @@ -859,7 +863,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer) DV_SET(offset, 0); DV_SET(width, 0); - if (spi_dv_device_compare_inquiry(sdev, buffer, buffer, DV_LOOPS) + if (spi_dv_device_compare_inquiry(sdev, q, buffer, buffer, DV_LOOPS) != SPI_COMPARE_SUCCESS) { starget_printk(KERN_ERR, starget, "Domain Validation Initial Inquiry Failed\n"); /* FIXME: should probably offline the device here? */ @@ -875,9 +879,8 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer) if (i->f->set_width && max_width) { i->f->set_width(starget, 1); - if (spi_dv_device_compare_inquiry(sdev, buffer, - buffer + len, - DV_LOOPS) + if (spi_dv_device_compare_inquiry(sdev, q, buffer, buffer + len, + DV_LOOPS) != SPI_COMPARE_SUCCESS) { starget_printk(KERN_ERR, starget, "Wide Transfers Fail\n"); i->f->set_width(starget, 0); @@ -946,7 +949,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer) DV_SET(width, max_width); /* Do the read only INQUIRY tests */ - spi_dv_retrain(sdev, buffer, buffer + sdev->inquiry_len, + spi_dv_retrain(sdev, q, buffer, buffer + sdev->inquiry_len, spi_dv_device_compare_inquiry); /* See if we actually managed to negotiate and sustain DT */ if (i->f->get_dt) @@ -958,7 +961,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer) * negotiated DT */ if (len == -1 && spi_dt(starget)) - len = spi_dv_device_get_echo_buffer(sdev, buffer); + len = spi_dv_device_get_echo_buffer(sdev, q, buffer); if (len <= 0) { starget_printk(KERN_INFO, starget, "Domain Validation skipping write tests\n"); @@ -970,7 +973,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer) len = SPI_MAX_ECHO_BUFFER_SIZE; } - if (spi_dv_retrain(sdev, buffer, buffer + len, + if (spi_dv_retrain(sdev, q, buffer, buffer + len, spi_dv_device_echo_buffer) == SPI_COMPARE_SKIP_TEST) { /* OK, the stupid drive can't do a write echo buffer @@ -1030,7 +1033,7 @@ spi_dv_device(struct scsi_device *sdev) starget_printk(KERN_INFO, starget, "Beginning Domain Validation\n"); - spi_dv_device_internal(sdev, buffer); + spi_dv_device_internal(sdev, sdev->request_queue, buffer); starget_printk(KERN_INFO, starget, "Ending Domain Validation\n");

[6/9] scsi_transport_spi: Make spi_execute() accept a request queue pointer

Commit Message

Patch