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path: root/drivers/ata/sata_qstor.c
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Diffstat (limited to 'drivers/ata/sata_qstor.c')
-rw-r--r--drivers/ata/sata_qstor.c82
1 files changed, 18 insertions, 64 deletions
diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c
index 1fe941688e95..cfb9b5b61cd7 100644
--- a/drivers/ata/sata_qstor.c
+++ b/drivers/ata/sata_qstor.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* sata_qstor.c - Pacific Digital Corporation QStor SATA
*
@@ -6,25 +7,8 @@
* Copyright 2005 Pacific Digital Corporation.
* (OSL/GPL code release authorized by Jalil Fadavi).
*
- *
- * 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, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
* libata documentation is available via 'make {ps|pdf}docs',
* as Documentation/driver-api/libata.rst
- *
*/
#include <linux/kernel.h>
@@ -116,7 +100,7 @@ static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static int qs_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int qs_port_start(struct ata_port *ap);
static void qs_host_stop(struct ata_host *host);
-static void qs_qc_prep(struct ata_queued_cmd *qc);
+static enum ata_completion_errors qs_qc_prep(struct ata_queued_cmd *qc);
static unsigned int qs_qc_issue(struct ata_queued_cmd *qc);
static int qs_check_atapi_dma(struct ata_queued_cmd *qc);
static void qs_freeze(struct ata_port *ap);
@@ -124,7 +108,7 @@ static void qs_thaw(struct ata_port *ap);
static int qs_prereset(struct ata_link *link, unsigned long deadline);
static void qs_error_handler(struct ata_port *ap);
-static struct scsi_host_template qs_ata_sht = {
+static const struct scsi_host_template qs_ata_sht = {
ATA_BASE_SHT(DRV_NAME),
.sg_tablesize = QS_MAX_PRD,
.dma_boundary = QS_DMA_BOUNDARY,
@@ -139,8 +123,8 @@ static struct ata_port_operations qs_ata_ops = {
.freeze = qs_freeze,
.thaw = qs_thaw,
- .prereset = qs_prereset,
- .softreset = ATA_OP_NULL,
+ .reset.prereset = qs_prereset,
+ .reset.softreset = ATA_OP_NULL,
.error_handler = qs_error_handler,
.lost_interrupt = ATA_OP_NULL,
@@ -268,15 +252,12 @@ static unsigned int qs_fill_sg(struct ata_queued_cmd *qc)
len = sg_dma_len(sg);
*(__le32 *)prd = cpu_to_le32(len);
prd += sizeof(u64);
-
- VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", si,
- (unsigned long long)addr, len);
}
return si;
}
-static void qs_qc_prep(struct ata_queued_cmd *qc)
+static enum ata_completion_errors qs_qc_prep(struct ata_queued_cmd *qc)
{
struct qs_port_priv *pp = qc->ap->private_data;
u8 dflags = QS_DF_PORD, *buf = pp->pkt;
@@ -284,11 +265,9 @@ static void qs_qc_prep(struct ata_queued_cmd *qc)
u64 addr;
unsigned int nelem;
- VPRINTK("ENTER\n");
-
qs_enter_reg_mode(qc->ap);
if (qc->tf.protocol != ATA_PROT_DMA)
- return;
+ return AC_ERR_OK;
nelem = qs_fill_sg(qc);
@@ -311,6 +290,8 @@ static void qs_qc_prep(struct ata_queued_cmd *qc)
/* frame information structure (FIS) */
ata_tf_to_fis(&qc->tf, 0, 1, &buf[32]);
+
+ return AC_ERR_OK;
}
static inline void qs_packet_start(struct ata_queued_cmd *qc)
@@ -318,8 +299,6 @@ static inline void qs_packet_start(struct ata_queued_cmd *qc)
struct ata_port *ap = qc->ap;
u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
- VPRINTK("ENTER, ap %p\n", ap);
-
writeb(QS_CTR0_CLER, chan + QS_CCT_CTR0);
wmb(); /* flush PRDs and pkt to memory */
writel(QS_CCF_RUN_PKT, chan + QS_CCT_CFF);
@@ -388,8 +367,8 @@ static inline unsigned int qs_intr_pkt(struct ata_host *host)
struct qs_port_priv *pp = ap->private_data;
struct ata_queued_cmd *qc;
- DPRINTK("SFF=%08x%08x: sCHAN=%u sHST=%d sDST=%02x\n",
- sff1, sff0, port_no, sHST, sDST);
+ dev_dbg(host->dev, "SFF=%08x%08x: sHST=%d sDST=%02x\n",
+ sff1, sff0, sHST, sDST);
handled = 1;
if (!pp || pp->state != qs_state_pkt)
continue;
@@ -449,14 +428,10 @@ static irqreturn_t qs_intr(int irq, void *dev_instance)
unsigned int handled = 0;
unsigned long flags;
- VPRINTK("ENTER\n");
-
spin_lock_irqsave(&host->lock, flags);
handled = qs_intr_pkt(host) | qs_intr_mmio(host);
spin_unlock_irqrestore(&host->lock, flags);
- VPRINTK("EXIT\n");
-
return IRQ_RETVAL(handled);
}
@@ -493,7 +468,6 @@ static int qs_port_start(struct ata_port *ap)
GFP_KERNEL);
if (!pp->pkt)
return -ENOMEM;
- memset(pp->pkt, 0, QS_PKT_BYTES);
ap->private_data = pp;
qs_enter_reg_mode(ap);
@@ -554,33 +528,13 @@ static void qs_host_init(struct ata_host *host, unsigned int chip_id)
static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base)
{
u32 bus_info = readl(mmio_base + QS_HID_HPHY);
- int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT);
-
- if (have_64bit_bus &&
- !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
- rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
- if (rc) {
- rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (rc) {
- dev_err(&pdev->dev,
- "64-bit DMA enable failed\n");
- return rc;
- }
- }
- } else {
- rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (rc) {
- dev_err(&pdev->dev, "32-bit DMA enable failed\n");
- return rc;
- }
- rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (rc) {
- dev_err(&pdev->dev,
- "32-bit consistent DMA enable failed\n");
- return rc;
- }
- }
- return 0;
+ int dma_bits = (bus_info & QS_HPHY_64BIT) ? 64 : 32;
+ int rc;
+
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_bits));
+ if (rc)
+ dev_err(&pdev->dev, "%d-bit DMA enable failed\n", dma_bits);
+ return rc;
}
static int qs_ata_init_one(struct pci_dev *pdev,
generated by cgit (git 2.34.1) at 2025-12-26 19:50:41 +0000