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Diffstat (limited to 'drivers/scsi/aha1542.c')
-rw-r--r--drivers/scsi/aha1542.c213
1 files changed, 54 insertions, 159 deletions
diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c
index 8c915d721ce0..d15191324b06 100644
--- a/drivers/scsi/aha1542.c
+++ b/drivers/scsi/aha1542.c
@@ -53,56 +53,30 @@
#else
#define DEB(x)
#endif
+#define MAXBOARDS 4
-/*
- static const char RCSid[] = "$Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $";
- */
-
-/* The adaptec can be configured for quite a number of addresses, but
- I generally do not want the card poking around at random. We allow
- two addresses - this allows people to use the Adaptec with a Midi
- card, which also used 0x330 -- can be overridden with LILO! */
-
-#define MAXBOARDS 4 /* Increase this and the sizes of the
- arrays below, if you need more.. */
-
-/* Boards 3,4 slots are reserved for ISAPnP scans */
-
-static unsigned int bases[MAXBOARDS] = {0x330, 0x334, 0, 0};
+static bool isapnp = 1;
+module_param(isapnp, bool, 0);
+MODULE_PARM_DESC(isapnp, "enable PnP support (default=1)");
-/* set by aha1542_setup according to the command line; they also may
- be marked __initdata, but require zero initializers then */
+static int io[MAXBOARDS] = { 0x330, 0x334, 0, 0 };
+module_param_array(io, int, NULL, 0);
+MODULE_PARM_DESC(io, "base IO address of controller (0x130,0x134,0x230,0x234,0x330,0x334, default=0x330,0x334)");
-static int setup_called[MAXBOARDS];
-static int setup_buson[MAXBOARDS];
-static int setup_busoff[MAXBOARDS];
-static int setup_dmaspeed[MAXBOARDS] = { -1, -1, -1, -1 };
+/* time AHA spends on the AT-bus during data transfer */
+static int bus_on[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 11us */
+module_param_array(bus_on, int, NULL, 0);
+MODULE_PARM_DESC(bus_on, "bus on time [us] (2-15, default=-1 [HW default: 11])");
-/*
- * LILO/Module params: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]
- *
- * Where: <PORTBASE> is any of the valid AHA addresses:
- * 0x130, 0x134, 0x230, 0x234, 0x330, 0x334
- * <BUSON> is the time (in microsecs) that AHA spends on the AT-bus
- * when transferring data. 1542A power-on default is 11us,
- * valid values are in range: 2..15 (decimal)
- * <BUSOFF> is the time that AHA spends OFF THE BUS after while
- * it is transferring data (not to monopolize the bus).
- * Power-on default is 4us, valid range: 1..64 microseconds.
- * <DMASPEED> Default is jumper selected (1542A: on the J1),
- * but experimenter can alter it with this.
- * Valid values: 5, 6, 7, 8, 10 (MB/s)
- * Factory default is 5 MB/s.
- */
+/* time AHA spends off the bus (not to monopolize it) during data transfer */
+static int bus_off[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 4us */
+module_param_array(bus_off, int, NULL, 0);
+MODULE_PARM_DESC(bus_off, "bus off time [us] (1-64, default=-1 [HW default: 4])");
-#if defined(MODULE)
-static bool isapnp = 0;
-static int aha1542[] = {0x330, 11, 4, -1};
-module_param_array(aha1542, int, NULL, 0);
-module_param(isapnp, bool, 0);
-#else
-static int isapnp = 1;
-#endif
+/* default is jumper selected (J1 on 1542A), factory default = 5 MB/s */
+static int dma_speed[MAXBOARDS] = { -1, -1, -1, -1 };
+module_param_array(dma_speed, int, NULL, 0);
+MODULE_PARM_DESC(dma_speed, "DMA speed [MB/s] (5,6,7,8,10, default=-1 [by jumper])");
#define BIOS_TRANSLATION_1632 0 /* Used by some old 1542A boards */
#define BIOS_TRANSLATION_6432 1 /* Default case these days */
@@ -792,101 +766,48 @@ static int aha1542_query(int base_io, int *transl)
return 0;
}
-#ifndef MODULE
-static char *setup_str[MAXBOARDS] __initdata;
-static int setup_idx = 0;
-
-static void __init aha1542_setup(char *str, int *ints)
+static u8 dma_speed_hw(int dma_speed)
{
- const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n";
- int setup_portbase;
-
- if (setup_idx >= MAXBOARDS) {
- printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n");
- printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]);
- printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]);
- printk(KERN_ERR " This line: %s\n", str);
- return;
- }
- if (ints[0] < 1 || ints[0] > 4) {
- printk(KERN_ERR "aha1542: %s\n", str);
- printk(ahausage);
- printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n");
- }
- setup_called[setup_idx] = ints[0];
- setup_str[setup_idx] = str;
-
- setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */
- setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7;
- setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5;
- if (ints[0] >= 4)
- {
- int atbt = -1;
- switch (ints[4]) {
- case 5:
- atbt = 0x00;
- break;
- case 6:
- atbt = 0x04;
- break;
- case 7:
- atbt = 0x01;
- break;
- case 8:
- atbt = 0x02;
- break;
- case 10:
- atbt = 0x03;
- break;
- default:
- printk(KERN_ERR "aha1542: %s\n", str);
- printk(ahausage);
- printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n");
- break;
- }
- setup_dmaspeed[setup_idx] = atbt;
+ switch (dma_speed) {
+ case 5:
+ return 0x00;
+ case 6:
+ return 0x04;
+ case 7:
+ return 0x01;
+ case 8:
+ return 0x02;
+ case 10:
+ return 0x03;
}
- if (setup_portbase != 0)
- bases[setup_idx] = setup_portbase;
- ++setup_idx;
+ return 0xff; /* invalid */
}
-static int __init do_setup(char *str)
+/* Set the Bus on/off-times as not to ruin floppy performance */
+static void aha1542_set_bus_times(int indx)
{
- int ints[5];
+ unsigned int base_io = io[indx];
- int count=setup_idx;
+ if (bus_on[indx] > 0) {
+ u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on[indx], 2, 15) };
- get_options(str, ARRAY_SIZE(ints), ints);
- aha1542_setup(str,ints);
+ aha1542_intr_reset(base_io);
+ if (aha1542_out(base_io, oncmd, 2))
+ goto fail;
+ }
- return count<setup_idx;
-}
+ if (bus_off[indx] > 0) {
+ u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off[indx], 1, 64) };
-__setup("aha1542=",do_setup);
-#endif
+ aha1542_intr_reset(base_io);
+ if (aha1542_out(base_io, offcmd, 2))
+ goto fail;
+ }
-/* Set the Bus on/off-times as not to ruin floppy performance */
-static void aha1542_set_bus_times(int indx)
-{
- unsigned int base_io = bases[indx];
- u8 oncmd[] = {CMD_BUSON_TIME, 7};
- u8 offcmd[] = {CMD_BUSOFF_TIME, 5};
+ if (dma_speed_hw(dma_speed[indx]) != 0xff) {
+ u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed[indx]) };
- if (setup_called[indx]) {
- oncmd[1] = setup_buson[indx];
- offcmd[1] = setup_busoff[indx];
- }
- aha1542_intr_reset(base_io);
- if (aha1542_out(base_io, oncmd, 2))
- goto fail;
- aha1542_intr_reset(base_io);
- if (aha1542_out(base_io, offcmd, 2))
- goto fail;
- if (setup_dmaspeed[indx] >= 0) {
- u8 dmacmd[] = {CMD_DMASPEED, 0};
- dmacmd[1] = setup_dmaspeed[indx];
aha1542_intr_reset(base_io);
if (aha1542_out(base_io, dmacmd, 2))
goto fail;
@@ -901,7 +822,7 @@ fail:
/* return non-zero on detection */
static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx)
{
- unsigned int base_io = bases[indx];
+ unsigned int base_io = io[indx];
struct Scsi_Host *shpnt;
struct aha1542_hostdata *aha1542;
@@ -1207,19 +1128,19 @@ static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *i
int indx;
struct Scsi_Host *sh;
- for (indx = 0; indx < ARRAY_SIZE(bases); indx++) {
- if (bases[indx])
+ for (indx = 0; indx < ARRAY_SIZE(io); indx++) {
+ if (io[indx])
continue;
if (pnp_activate_dev(pdev) < 0)
continue;
- bases[indx] = pnp_port_start(pdev, 0);
+ io[indx] = pnp_port_start(pdev, 0);
/* The card can be queried for its DMA, we have
the DMA set up that is enough */
- printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]);
+ printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", io[indx]);
}
sh = aha1542_hw_init(&driver_template, &pdev->dev, indx);
@@ -1248,32 +1169,6 @@ static int pnp_registered;
static int __init aha1542_init(void)
{
int ret = 0;
-#ifdef MODULE
- int atbt = -1;
-
- bases[0] = aha1542[0];
- setup_buson[0] = aha1542[1];
- setup_busoff[0] = aha1542[2];
-
- switch (aha1542[3]) {
- case 5:
- atbt = 0x00;
- break;
- case 6:
- atbt = 0x04;
- break;
- case 7:
- atbt = 0x01;
- break;
- case 8:
- atbt = 0x02;
- break;
- case 10:
- atbt = 0x03;
- break;
- };
- setup_dmaspeed[0] = atbt;
-#endif
#ifdef CONFIG_PNP
if (isapnp) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 04:09:59 +0000