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Message-Id: <0e0c3f6501332141c5a90ae8c58a08875cefcac6.1475791899.git.fthain@telegraphics.com.au>
Date: Thu, 6 Oct 2016 19:41:07 -0400 (EDT)
From: Finn Thain <fthain@...egraphics.com.au>
To: "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Russell King <linux@...linux.org.uk>,
linux-arm-kernel@...ts.infradead.org
Cc: Michael Schmitz <schmitzmic@...il.com>,
Ondrej Zary <linux@...nbow-software.org>,
<linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 11/12] scsi/ncr5380: Use correct types for DMA routines
Apply prototypes to get consistent function signatures for the DMA
functions implemented in the board-specific drivers. To avoid using
macros to alter actual parameters, some of those functions are reworked
slightly.
This is a step toward the goal of passing the board-specific routines
to the core driver using an ops struct (as in a platform driver or
library module).
This also helps fix some inconsistent types: where the core driver uses
ints (cmd->SCp.this_residual and hostdata->dma_len) for keeping track of
transfers, certain board-specific routines used unsigned long.
While we are fixing these function signatures, pass the hostdata pointer
to DMA routines instead of a Scsi_Host pointer, for shorter and faster
code.
Signed-off-by: Finn Thain <fthain@...egraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@...e.com>
---
drivers/scsi/NCR5380.c | 74 +++++++++++++++++++++++++--------------------
drivers/scsi/NCR5380.h | 25 +++++++++++++++
drivers/scsi/arm/cumana_1.c | 26 ++++++++++------
drivers/scsi/arm/oak.c | 13 ++++----
drivers/scsi/atari_scsi.c | 45 +++++++++++++++------------
drivers/scsi/dmx3191d.c | 8 ++---
drivers/scsi/g_NCR5380.c | 13 +++-----
drivers/scsi/g_NCR5380.h | 5 ++-
drivers/scsi/mac_scsi.c | 36 +++++++++++-----------
drivers/scsi/sun3_scsi.c | 45 +++++++++++++++++++--------
10 files changed, 176 insertions(+), 114 deletions(-)
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index 3f2bfd2..72ac31cd 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -121,9 +121,10 @@
*
* Either real DMA *or* pseudo DMA may be implemented
*
- * NCR5380_dma_write_setup(instance, src, count) - initialize
- * NCR5380_dma_read_setup(instance, dst, count) - initialize
- * NCR5380_dma_residual(instance); - residual count
+ * NCR5380_dma_xfer_len - determine size of DMA/PDMA transfer
+ * NCR5380_dma_send_setup - execute DMA/PDMA from memory to 5380
+ * NCR5380_dma_recv_setup - execute DMA/PDMA from 5380 to memory
+ * NCR5380_dma_residual - residual byte count
*
* The generic driver is initialized by calling NCR5380_init(instance),
* after setting the appropriate host specific fields and ID. If the
@@ -871,7 +872,7 @@ static void NCR5380_dma_complete(struct Scsi_Host *instance)
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
NCR5380_read(RESET_PARITY_INTERRUPT_REG);
- transferred = hostdata->dma_len - NCR5380_dma_residual(instance);
+ transferred = hostdata->dma_len - NCR5380_dma_residual(hostdata);
hostdata->dma_len = 0;
data = (unsigned char **)&hostdata->connected->SCp.ptr;
@@ -1578,9 +1579,9 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
* starting the NCR. This is also the cleaner way for the TT.
*/
if (p & SR_IO)
- result = NCR5380_dma_recv_setup(instance, d, c);
+ result = NCR5380_dma_recv_setup(hostdata, d, c);
else
- result = NCR5380_dma_send_setup(instance, d, c);
+ result = NCR5380_dma_send_setup(hostdata, d, c);
}
/*
@@ -1612,9 +1613,9 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
* NCR access, else the DMA setup gets trashed!
*/
if (p & SR_IO)
- result = NCR5380_dma_recv_setup(instance, d, c);
+ result = NCR5380_dma_recv_setup(hostdata, d, c);
else
- result = NCR5380_dma_send_setup(instance, d, c);
+ result = NCR5380_dma_send_setup(hostdata, d, c);
}
/* On failure, NCR5380_dma_xxxx_setup() returns a negative int. */
@@ -1754,22 +1755,26 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
NCR5380_dprint_phase(NDEBUG_INFORMATION, instance);
}
#ifdef CONFIG_SUN3
- if (phase == PHASE_CMDOUT) {
- void *d;
- unsigned long count;
+ if (phase == PHASE_CMDOUT &&
+ sun3_dma_setup_done != cmd) {
+ int count;
if (!cmd->SCp.this_residual && cmd->SCp.buffers_residual) {
- count = cmd->SCp.buffer->length;
- d = sg_virt(cmd->SCp.buffer);
- } else {
- count = cmd->SCp.this_residual;
- d = cmd->SCp.ptr;
+ ++cmd->SCp.buffer;
+ --cmd->SCp.buffers_residual;
+ cmd->SCp.this_residual = cmd->SCp.buffer->length;
+ cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
}
- if (sun3_dma_setup_done != cmd &&
- sun3scsi_dma_xfer_len(count, cmd) > 0) {
- sun3scsi_dma_setup(instance, d, count,
- rq_data_dir(cmd->request));
+ count = sun3scsi_dma_xfer_len(hostdata, cmd);
+
+ if (count > 0) {
+ if (rq_data_dir(cmd->request))
+ sun3scsi_dma_send_setup(hostdata,
+ cmd->SCp.ptr, count);
+ else
+ sun3scsi_dma_recv_setup(hostdata,
+ cmd->SCp.ptr, count);
sun3_dma_setup_done = cmd;
}
#ifdef SUN3_SCSI_VME
@@ -1830,7 +1835,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
transfersize = 0;
if (!cmd->device->borken)
- transfersize = NCR5380_dma_xfer_len(instance, cmd, phase);
+ transfersize = NCR5380_dma_xfer_len(hostdata, cmd);
if (transfersize > 0) {
len = transfersize;
@@ -2207,22 +2212,25 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
}
#ifdef CONFIG_SUN3
- {
- void *d;
- unsigned long count;
+ if (sun3_dma_setup_done != tmp) {
+ int count;
if (!tmp->SCp.this_residual && tmp->SCp.buffers_residual) {
- count = tmp->SCp.buffer->length;
- d = sg_virt(tmp->SCp.buffer);
- } else {
- count = tmp->SCp.this_residual;
- d = tmp->SCp.ptr;
+ ++tmp->SCp.buffer;
+ --tmp->SCp.buffers_residual;
+ tmp->SCp.this_residual = tmp->SCp.buffer->length;
+ tmp->SCp.ptr = sg_virt(tmp->SCp.buffer);
}
- if (sun3_dma_setup_done != tmp &&
- sun3scsi_dma_xfer_len(count, tmp) > 0) {
- sun3scsi_dma_setup(instance, d, count,
- rq_data_dir(tmp->request));
+ count = sun3scsi_dma_xfer_len(hostdata, tmp);
+
+ if (count > 0) {
+ if (rq_data_dir(tmp->request))
+ sun3scsi_dma_send_setup(hostdata,
+ tmp->SCp.ptr, count);
+ else
+ sun3scsi_dma_recv_setup(hostdata,
+ tmp->SCp.ptr, count);
sun3_dma_setup_done = tmp;
}
}
diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h
index b2c560c..3c6ce54 100644
--- a/drivers/scsi/NCR5380.h
+++ b/drivers/scsi/NCR5380.h
@@ -317,5 +317,30 @@ static inline int NCR5380_poll_politely(struct NCR5380_hostdata *hostdata,
reg, bit, val, wait);
}
+static int NCR5380_dma_xfer_len(struct NCR5380_hostdata *,
+ struct scsi_cmnd *);
+static int NCR5380_dma_send_setup(struct NCR5380_hostdata *,
+ unsigned char *, int);
+static int NCR5380_dma_recv_setup(struct NCR5380_hostdata *,
+ unsigned char *, int);
+static int NCR5380_dma_residual(struct NCR5380_hostdata *);
+
+static inline int NCR5380_dma_xfer_none(struct NCR5380_hostdata *hostdata,
+ struct scsi_cmnd *cmd)
+{
+ return 0;
+}
+
+static inline int NCR5380_dma_setup_none(struct NCR5380_hostdata *hostdata,
+ unsigned char *data, int count)
+{
+ return 0;
+}
+
+static inline int NCR5380_dma_residual_none(struct NCR5380_hostdata *hostdata)
+{
+ return 0;
+}
+
#endif /* __KERNEL__ */
#endif /* NCR5380_H */
diff --git a/drivers/scsi/arm/cumana_1.c b/drivers/scsi/arm/cumana_1.c
index fb7600d..a87b99c 100644
--- a/drivers/scsi/arm/cumana_1.c
+++ b/drivers/scsi/arm/cumana_1.c
@@ -17,10 +17,10 @@
#define NCR5380_read(reg) cumanascsi_read(hostdata, reg)
#define NCR5380_write(reg, value) cumanascsi_write(hostdata, reg, value)
-#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
+#define NCR5380_dma_xfer_len cumanascsi_dma_xfer_len
#define NCR5380_dma_recv_setup cumanascsi_pread
#define NCR5380_dma_send_setup cumanascsi_pwrite
-#define NCR5380_dma_residual(instance) (0)
+#define NCR5380_dma_residual NCR5380_dma_residual_none
#define NCR5380_intr cumanascsi_intr
#define NCR5380_queue_command cumanascsi_queue_command
@@ -40,12 +40,12 @@ static void cumanascsi_write(struct NCR5380_hostdata *, unsigned int, u8);
#define L(v) (((v)<<16)|((v) & 0x0000ffff))
#define H(v) (((v)>>16)|((v) & 0xffff0000))
-static inline int cumanascsi_pwrite(struct Scsi_Host *host,
+static inline int cumanascsi_pwrite(struct NCR5380_hostdata *hostdata,
unsigned char *addr, int len)
{
unsigned long *laddr;
- u8 __iomem *base = priv(host)->io;
- u8 __iomem *dma = priv(host)->pdma_io + 0x2000;
+ u8 __iomem *base = hostdata->io;
+ u8 __iomem *dma = hostdata->pdma_io + 0x2000;
if(!len) return 0;
@@ -100,19 +100,19 @@ static inline int cumanascsi_pwrite(struct Scsi_Host *host,
}
}
end:
- writeb(priv(host)->ctrl | 0x40, base + CTRL);
+ writeb(hostdata->ctrl | 0x40, base + CTRL);
if (len)
return -1;
return 0;
}
-static inline int cumanascsi_pread(struct Scsi_Host *host,
+static inline int cumanascsi_pread(struct NCR5380_hostdata *hostdata,
unsigned char *addr, int len)
{
unsigned long *laddr;
- u8 __iomem *base = priv(host)->io;
- u8 __iomem *dma = priv(host)->pdma_io + 0x2000;
+ u8 __iomem *base = hostdata->io;
+ u8 __iomem *dma = hostdata->pdma_io + 0x2000;
if(!len) return 0;
@@ -166,13 +166,19 @@ static inline int cumanascsi_pread(struct Scsi_Host *host,
}
}
end:
- writeb(priv(host)->ctrl | 0x40, base + CTRL);
+ writeb(hostdata->ctrl | 0x40, base + CTRL);
if (len)
return -1;
return 0;
}
+static int cumanascsi_dma_xfer_len(struct NCR5380_hostdata *hostdata,
+ struct scsi_cmnd *cmd)
+{
+ return cmd->transfersize;
+}
+
static u8 cumanascsi_read(struct NCR5380_hostdata *hostdata,
unsigned int reg)
{
diff --git a/drivers/scsi/arm/oak.c b/drivers/scsi/arm/oak.c
index d320f88..6be6666 100644
--- a/drivers/scsi/arm/oak.c
+++ b/drivers/scsi/arm/oak.c
@@ -19,10 +19,10 @@
#define NCR5380_read(reg) readb(hostdata->io + ((reg) << 2))
#define NCR5380_write(reg, value) writeb(value, hostdata->io + ((reg) << 2))
-#define NCR5380_dma_xfer_len(instance, cmd, phase) (0)
+#define NCR5380_dma_xfer_len NCR5380_dma_xfer_none
#define NCR5380_dma_recv_setup oakscsi_pread
#define NCR5380_dma_send_setup oakscsi_pwrite
-#define NCR5380_dma_residual(instance) (0)
+#define NCR5380_dma_residual NCR5380_dma_residual_none
#define NCR5380_queue_command oakscsi_queue_command
#define NCR5380_info oakscsi_info
@@ -37,10 +37,10 @@
#define STAT ((128 + 16) << 2)
#define DATA ((128 + 8) << 2)
-static inline int oakscsi_pwrite(struct Scsi_Host *instance,
+static inline int oakscsi_pwrite(struct NCR5380_hostdata *hostdata,
unsigned char *addr, int len)
{
- u8 __iomem *base = priv(instance)->io;
+ u8 __iomem *base = hostdata->io;
printk("writing %p len %d\n",addr, len);
@@ -52,10 +52,11 @@ printk("writing %p len %d\n",addr, len);
return 0;
}
-static inline int oakscsi_pread(struct Scsi_Host *instance,
+static inline int oakscsi_pread(struct NCR5380_hostdata *hostdata,
unsigned char *addr, int len)
{
- u8 __iomem *base = priv(instance)->io;
+ u8 __iomem *base = hostdata->io;
+
printk("reading %p len %d\n", addr, len);
while(len > 0)
{
diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c
index f77c311..105b353 100644
--- a/drivers/scsi/atari_scsi.c
+++ b/drivers/scsi/atari_scsi.c
@@ -67,14 +67,10 @@ static void (*atari_scsi_reg_write)(unsigned int, u8);
#define NCR5380_abort atari_scsi_abort
#define NCR5380_info atari_scsi_info
-#define NCR5380_dma_recv_setup(instance, data, count) \
- atari_scsi_dma_setup(instance, data, count, 0)
-#define NCR5380_dma_send_setup(instance, data, count) \
- atari_scsi_dma_setup(instance, data, count, 1)
-#define NCR5380_dma_residual(instance) \
- atari_scsi_dma_residual(instance)
-#define NCR5380_dma_xfer_len(instance, cmd, phase) \
- atari_dma_xfer_len(cmd->SCp.this_residual, cmd, !((phase) & SR_IO))
+#define NCR5380_dma_xfer_len atari_scsi_dma_xfer_len
+#define NCR5380_dma_recv_setup atari_scsi_dma_recv_setup
+#define NCR5380_dma_send_setup atari_scsi_dma_send_setup
+#define NCR5380_dma_residual atari_scsi_dma_residual
#define NCR5380_acquire_dma_irq(instance) falcon_get_lock(instance)
#define NCR5380_release_dma_irq(instance) falcon_release_lock()
@@ -457,15 +453,14 @@ static int __init atari_scsi_setup(char *str)
__setup("atascsi=", atari_scsi_setup);
#endif /* !MODULE */
-
-static unsigned long atari_scsi_dma_setup(struct Scsi_Host *instance,
+static unsigned long atari_scsi_dma_setup(struct NCR5380_hostdata *hostdata,
void *data, unsigned long count,
int dir)
{
unsigned long addr = virt_to_phys(data);
- dprintk(NDEBUG_DMA, "scsi%d: setting up dma, data = %p, phys = %lx, count = %ld, "
- "dir = %d\n", instance->host_no, data, addr, count, dir);
+ dprintk(NDEBUG_DMA, "scsi%d: setting up dma, data = %p, phys = %lx, count = %ld, dir = %d\n",
+ hostdata->host->host_no, data, addr, count, dir);
if (!IS_A_TT() && !STRAM_ADDR(addr)) {
/* If we have a non-DMAable address on a Falcon, use the dribble
@@ -522,8 +517,19 @@ static unsigned long atari_scsi_dma_setup(struct Scsi_Host *instance,
return count;
}
+static inline int atari_scsi_dma_recv_setup(struct NCR5380_hostdata *hostdata,
+ unsigned char *data, int count)
+{
+ return atari_scsi_dma_setup(hostdata, data, count, 0);
+}
+
+static inline int atari_scsi_dma_send_setup(struct NCR5380_hostdata *hostdata,
+ unsigned char *data, int count)
+{
+ return atari_scsi_dma_setup(hostdata, data, count, 1);
+}
-static long atari_scsi_dma_residual(struct Scsi_Host *instance)
+static int atari_scsi_dma_residual(struct NCR5380_hostdata *hostdata)
{
return atari_dma_residual;
}
@@ -564,10 +570,11 @@ static int falcon_classify_cmd(struct scsi_cmnd *cmd)
* the overrun problem, so this question is academic :-)
*/
-static unsigned long atari_dma_xfer_len(unsigned long wanted_len,
- struct scsi_cmnd *cmd, int write_flag)
+static int atari_scsi_dma_xfer_len(struct NCR5380_hostdata *hostdata,
+ struct scsi_cmnd *cmd)
{
- unsigned long possible_len, limit;
+ int wanted_len = cmd->SCp.this_residual;
+ int possible_len, limit;
if (wanted_len < DMA_MIN_SIZE)
return 0;
@@ -604,7 +611,7 @@ static unsigned long atari_dma_xfer_len(unsigned long wanted_len,
* use the dribble buffer and thus can do only STRAM_BUFFER_SIZE bytes.
*/
- if (write_flag) {
+ if (cmd->sc_data_direction == DMA_TO_DEVICE) {
/* Write operation can always use the DMA, but the transfer size must
* be rounded up to the next multiple of 512 (atari_dma_setup() does
* this).
@@ -644,8 +651,8 @@ static unsigned long atari_dma_xfer_len(unsigned long wanted_len,
possible_len = limit;
if (possible_len != wanted_len)
- dprintk(NDEBUG_DMA, "Sorry, must cut DMA transfer size to %ld bytes "
- "instead of %ld\n", possible_len, wanted_len);
+ dprintk(NDEBUG_DMA, "DMA transfer now %d bytes instead of %d\n",
+ possible_len, wanted_len);
return possible_len;
}
diff --git a/drivers/scsi/dmx3191d.c b/drivers/scsi/dmx3191d.c
index ab7b097..3aa4657 100644
--- a/drivers/scsi/dmx3191d.c
+++ b/drivers/scsi/dmx3191d.c
@@ -37,10 +37,10 @@
#define NCR5380_read(reg) inb(hostdata->base + (reg))
#define NCR5380_write(reg, value) outb(value, hostdata->base + (reg))
-#define NCR5380_dma_xfer_len(instance, cmd, phase) (0)
-#define NCR5380_dma_recv_setup(instance, dst, len) (0)
-#define NCR5380_dma_send_setup(instance, src, len) (0)
-#define NCR5380_dma_residual(instance) (0)
+#define NCR5380_dma_xfer_len NCR5380_dma_xfer_none
+#define NCR5380_dma_recv_setup NCR5380_dma_setup_none
+#define NCR5380_dma_send_setup NCR5380_dma_setup_none
+#define NCR5380_dma_residual NCR5380_dma_residual_none
#define NCR5380_implementation_fields /* none */
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index 98aef0e..7299ad9 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -332,7 +332,7 @@ static void generic_NCR5380_release_resources(struct Scsi_Host *instance)
/**
* generic_NCR5380_pread - pseudo DMA read
- * @instance: adapter to read from
+ * @hostdata: scsi host private data
* @dst: buffer to read into
* @len: buffer length
*
@@ -340,10 +340,9 @@ static void generic_NCR5380_release_resources(struct Scsi_Host *instance)
* controller
*/
-static inline int generic_NCR5380_pread(struct Scsi_Host *instance,
+static inline int generic_NCR5380_pread(struct NCR5380_hostdata *hostdata,
unsigned char *dst, int len)
{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
int blocks = len / 128;
int start = 0;
@@ -406,7 +405,7 @@ static inline int generic_NCR5380_pread(struct Scsi_Host *instance,
/**
* generic_NCR5380_pwrite - pseudo DMA write
- * @instance: adapter to read from
+ * @hostdata: scsi host private data
* @dst: buffer to read into
* @len: buffer length
*
@@ -414,10 +413,9 @@ static inline int generic_NCR5380_pread(struct Scsi_Host *instance,
* controller
*/
-static inline int generic_NCR5380_pwrite(struct Scsi_Host *instance,
+static inline int generic_NCR5380_pwrite(struct NCR5380_hostdata *hostdata,
unsigned char *src, int len)
{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
int blocks = len / 128;
int start = 0;
@@ -480,10 +478,9 @@ static inline int generic_NCR5380_pwrite(struct Scsi_Host *instance,
return 0;
}
-static int generic_NCR5380_dma_xfer_len(struct Scsi_Host *instance,
+static int generic_NCR5380_dma_xfer_len(struct NCR5380_hostdata *hostdata,
struct scsi_cmnd *cmd)
{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
int transfersize = cmd->transfersize;
if (hostdata->flags & FLAG_NO_PSEUDO_DMA)
diff --git a/drivers/scsi/g_NCR5380.h b/drivers/scsi/g_NCR5380.h
index 10191d1..3ce5b65 100644
--- a/drivers/scsi/g_NCR5380.h
+++ b/drivers/scsi/g_NCR5380.h
@@ -32,11 +32,10 @@
#define NCR53C400_host_buffer 0x3900
#define NCR53C400_region_size 0x3a00
-#define NCR5380_dma_xfer_len(instance, cmd, phase) \
- generic_NCR5380_dma_xfer_len(instance, cmd)
+#define NCR5380_dma_xfer_len generic_NCR5380_dma_xfer_len
#define NCR5380_dma_recv_setup generic_NCR5380_pread
#define NCR5380_dma_send_setup generic_NCR5380_pwrite
-#define NCR5380_dma_residual(instance) (0)
+#define NCR5380_dma_residual NCR5380_dma_residual_none
#define NCR5380_intr generic_NCR5380_intr
#define NCR5380_queue_command generic_NCR5380_queue_command
diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c
index 07f956c..ccb68d1 100644
--- a/drivers/scsi/mac_scsi.c
+++ b/drivers/scsi/mac_scsi.c
@@ -33,11 +33,10 @@
#define NCR5380_read(reg) in_8(hostdata->io + ((reg) << 4))
#define NCR5380_write(reg, value) out_8(hostdata->io + ((reg) << 4), value)
-#define NCR5380_dma_xfer_len(instance, cmd, phase) \
- macscsi_dma_xfer_len(instance, cmd)
+#define NCR5380_dma_xfer_len macscsi_dma_xfer_len
#define NCR5380_dma_recv_setup macscsi_pread
#define NCR5380_dma_send_setup macscsi_pwrite
-#define NCR5380_dma_residual(instance) (hostdata->pdma_residual)
+#define NCR5380_dma_residual macscsi_dma_residual
#define NCR5380_intr macscsi_intr
#define NCR5380_queue_command macscsi_queue_command
@@ -152,10 +151,9 @@ __asm__ __volatile__ \
: "0"(s), "1"(d), "2"(n) \
: "d0")
-static int macscsi_pread(struct Scsi_Host *instance,
- unsigned char *dst, int len)
+static inline int macscsi_pread(struct NCR5380_hostdata *hostdata,
+ unsigned char *dst, int len)
{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
unsigned char *s = hostdata->pdma_io + (INPUT_DATA_REG << 4);
unsigned char *d = dst;
int n = len;
@@ -181,16 +179,16 @@ static int macscsi_pread(struct Scsi_Host *instance,
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH))
return 0;
- dsprintk(NDEBUG_PSEUDO_DMA, instance,
+ dsprintk(NDEBUG_PSEUDO_DMA, hostdata->host,
"%s: bus error (%d/%d)\n", __func__, transferred, len);
- NCR5380_dprint(NDEBUG_PSEUDO_DMA, instance);
+ NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host);
d = dst + transferred;
n = len - transferred;
}
scmd_printk(KERN_ERR, hostdata->connected,
"%s: phase mismatch or !DRQ\n", __func__);
- NCR5380_dprint(NDEBUG_PSEUDO_DMA, instance);
+ NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host);
return -1;
}
@@ -255,10 +253,9 @@ __asm__ __volatile__ \
: "0"(s), "1"(d), "2"(n) \
: "d0")
-static int macscsi_pwrite(struct Scsi_Host *instance,
- unsigned char *src, int len)
+static inline int macscsi_pwrite(struct NCR5380_hostdata *hostdata,
+ unsigned char *src, int len)
{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
unsigned char *s = src;
unsigned char *d = hostdata->pdma_io + (OUTPUT_DATA_REG << 4);
int n = len;
@@ -290,25 +287,23 @@ static int macscsi_pwrite(struct Scsi_Host *instance,
return 0;
}
- dsprintk(NDEBUG_PSEUDO_DMA, instance,
+ dsprintk(NDEBUG_PSEUDO_DMA, hostdata->host,
"%s: bus error (%d/%d)\n", __func__, transferred, len);
- NCR5380_dprint(NDEBUG_PSEUDO_DMA, instance);
+ NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host);
s = src + transferred;
n = len - transferred;
}
scmd_printk(KERN_ERR, hostdata->connected,
"%s: phase mismatch or !DRQ\n", __func__);
- NCR5380_dprint(NDEBUG_PSEUDO_DMA, instance);
+ NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host);
return -1;
}
-static int macscsi_dma_xfer_len(struct Scsi_Host *instance,
+static int macscsi_dma_xfer_len(struct NCR5380_hostdata *hostdata,
struct scsi_cmnd *cmd)
{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
-
if (hostdata->flags & FLAG_NO_PSEUDO_DMA ||
cmd->SCp.this_residual < 16)
return 0;
@@ -316,6 +311,11 @@ static int macscsi_dma_xfer_len(struct Scsi_Host *instance,
return cmd->SCp.this_residual;
}
+static int macscsi_dma_residual(struct NCR5380_hostdata *hostdata)
+{
+ return hostdata->pdma_residual;
+}
+
#include "NCR5380.c"
#define DRV_MODULE_NAME "mac_scsi"
diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c
index b408474..88db699 100644
--- a/drivers/scsi/sun3_scsi.c
+++ b/drivers/scsi/sun3_scsi.c
@@ -51,12 +51,10 @@
#define NCR5380_abort sun3scsi_abort
#define NCR5380_info sun3scsi_info
-#define NCR5380_dma_recv_setup(instance, data, count) (count)
-#define NCR5380_dma_send_setup(instance, data, count) (count)
-#define NCR5380_dma_residual(instance) \
- sun3scsi_dma_residual(instance)
-#define NCR5380_dma_xfer_len(instance, cmd, phase) \
- sun3scsi_dma_xfer_len(cmd->SCp.this_residual, cmd)
+#define NCR5380_dma_xfer_len sun3scsi_dma_xfer_len
+#define NCR5380_dma_recv_setup sun3scsi_dma_count
+#define NCR5380_dma_send_setup sun3scsi_dma_count
+#define NCR5380_dma_residual sun3scsi_dma_residual
#define NCR5380_acquire_dma_irq(instance) (1)
#define NCR5380_release_dma_irq(instance)
@@ -143,8 +141,8 @@ static irqreturn_t scsi_sun3_intr(int irq, void *dev)
}
/* sun3scsi_dma_setup() -- initialize the dma controller for a read/write */
-static unsigned long sun3scsi_dma_setup(struct Scsi_Host *instance,
- void *data, unsigned long count, int write_flag)
+static int sun3scsi_dma_setup(struct NCR5380_hostdata *hostdata,
+ unsigned char *data, int count, int write_flag)
{
void *addr;
@@ -196,9 +194,10 @@ static unsigned long sun3scsi_dma_setup(struct Scsi_Host *instance,
dregs->csr |= CSR_FIFO;
if(dregs->fifo_count != count) {
- shost_printk(KERN_ERR, instance, "FIFO mismatch %04x not %04x\n",
+ shost_printk(KERN_ERR, hostdata->host,
+ "FIFO mismatch %04x not %04x\n",
dregs->fifo_count, (unsigned int) count);
- NCR5380_dprint(NDEBUG_DMA, instance);
+ NCR5380_dprint(NDEBUG_DMA, hostdata->host);
}
/* setup udc */
@@ -233,14 +232,34 @@ static unsigned long sun3scsi_dma_setup(struct Scsi_Host *instance,
}
-static inline unsigned long sun3scsi_dma_residual(struct Scsi_Host *instance)
+static int sun3scsi_dma_count(struct NCR5380_hostdata *hostdata,
+ unsigned char *data, int count)
+{
+ return count;
+}
+
+static inline int sun3scsi_dma_recv_setup(struct NCR5380_hostdata *hostdata,
+ unsigned char *data, int count)
+{
+ return sun3scsi_dma_setup(hostdata, data, count, 0);
+}
+
+static inline int sun3scsi_dma_send_setup(struct NCR5380_hostdata *hostdata,
+ unsigned char *data, int count)
+{
+ return sun3scsi_dma_setup(hostdata, data, count, 1);
+}
+
+static int sun3scsi_dma_residual(struct NCR5380_hostdata *hostdata)
{
return last_residual;
}
-static inline unsigned long sun3scsi_dma_xfer_len(unsigned long wanted_len,
- struct scsi_cmnd *cmd)
+static int sun3scsi_dma_xfer_len(struct NCR5380_hostdata *hostdata,
+ struct scsi_cmnd *cmd)
{
+ int wanted_len = cmd->SCp.this_residual;
+
if (wanted_len < DMA_MIN_SIZE || cmd->request->cmd_type != REQ_TYPE_FS)
return 0;
--
2.7.3
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