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Message-Id: <200803221722.11689.bzolnier@gmail.com>
Date: Sat, 22 Mar 2008 17:22:11 +0100
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To: linux-ide@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: [PATCH 1/3] ide: add "vlb|pci_clock=" parameter
* Add "vlb_clock=" parameter for specifying VLB clock frequency (in MHz).
* Add "pci_clock=" parameter for specifying PCI bus clock frequency (in MHz).
While at it:
* qd65xx.c: rename {active,recovery}_cycle variables to {act,rec}_cyc.
Cc: Alan Cox <alan@...rguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
drivers/ide/ide.c | 12 ++++++++++++
drivers/ide/legacy/ali14xx.c | 2 +-
drivers/ide/legacy/ht6560b.c | 4 ++--
drivers/ide/legacy/qd65xx.c | 24 ++++++++++++++----------
drivers/ide/pci/aec62xx.c | 2 +-
drivers/ide/pci/alim15x3.c | 2 +-
drivers/ide/pci/amd74xx.c | 2 +-
drivers/ide/pci/cmd640.c | 9 ++++++++-
drivers/ide/pci/cmd64x.c | 6 +++---
drivers/ide/pci/cy82c693.c | 2 +-
drivers/ide/pci/opti621.c | 2 +-
drivers/ide/pci/via82cxxx.c | 2 +-
include/linux/ide.h | 3 +++
13 files changed, 49 insertions(+), 23 deletions(-)
Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -1116,6 +1116,18 @@ static void ide_port_class_release(struc
put_device(&hwif->gendev);
}
+int ide_vlb_clk;
+EXPORT_SYMBOL_GPL(ide_vlb_clk);
+
+module_param_named(vlb_clock, ide_vlb_clk, int, 0);
+MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)");
+
+int ide_pci_clk;
+EXPORT_SYMBOL_GPL(ide_pci_clk);
+
+module_param_named(pci_clock, ide_pci_clk, int, 0);
+MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)");
+
static unsigned int ide_ignore_cable;
static int ide_set_ignore_cable(const char *s, struct kernel_param *kp)
Index: b/drivers/ide/legacy/ali14xx.c
===================================================================
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -116,7 +116,7 @@ static void ali14xx_set_pio_mode(ide_dri
int time1, time2;
u8 param1, param2, param3, param4;
unsigned long flags;
- int bus_speed = system_bus_clock();
+ int bus_speed = ide_vlb_clk ? ide_vlb_clk : system_bus_clock();
/* calculate timing, according to PIO mode */
time1 = ide_pio_cycle_time(drive, pio);
Index: b/drivers/ide/legacy/ht6560b.c
===================================================================
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/legacy/ht6560b.c
@@ -212,8 +212,8 @@ static u8 ht_pio2timings(ide_drive_t *dr
{
int active_time, recovery_time;
int active_cycles, recovery_cycles;
- int bus_speed = system_bus_clock();
-
+ int bus_speed = ide_vlb_clk ? ide_vlb_clk : system_bus_clock();
+
if (pio) {
unsigned int cycle_time;
Index: b/drivers/ide/legacy/qd65xx.c
===================================================================
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -114,17 +114,18 @@ static void qd65xx_select(ide_drive_t *d
static u8 qd6500_compute_timing (ide_hwif_t *hwif, int active_time, int recovery_time)
{
- u8 active_cycle,recovery_cycle;
+ int clk = ide_vlb_clk ? ide_vlb_clk : system_bus_clock();
+ u8 act_cyc, rec_cyc;
- if (system_bus_clock()<=33) {
- active_cycle = 9 - IDE_IN(active_time * system_bus_clock() / 1000 + 1, 2, 9);
- recovery_cycle = 15 - IDE_IN(recovery_time * system_bus_clock() / 1000 + 1, 0, 15);
+ if (clk <= 33) {
+ act_cyc = 9 - IDE_IN(active_time * clk / 1000 + 1, 2, 9);
+ rec_cyc = 15 - IDE_IN(recovery_time * clk / 1000 + 1, 0, 15);
} else {
- active_cycle = 8 - IDE_IN(active_time * system_bus_clock() / 1000 + 1, 1, 8);
- recovery_cycle = 18 - IDE_IN(recovery_time * system_bus_clock() / 1000 + 1, 3, 18);
+ act_cyc = 8 - IDE_IN(active_time * clk / 1000 + 1, 1, 8);
+ rec_cyc = 18 - IDE_IN(recovery_time * clk / 1000 + 1, 3, 18);
}
- return((recovery_cycle<<4) | 0x08 | active_cycle);
+ return (rec_cyc << 4) | 0x08 | act_cyc;
}
/*
@@ -135,10 +136,13 @@ static u8 qd6500_compute_timing (ide_hwi
static u8 qd6580_compute_timing (int active_time, int recovery_time)
{
- u8 active_cycle = 17 - IDE_IN(active_time * system_bus_clock() / 1000 + 1, 2, 17);
- u8 recovery_cycle = 15 - IDE_IN(recovery_time * system_bus_clock() / 1000 + 1, 2, 15);
+ int clk = ide_vlb_clk ? ide_vlb_clk : system_bus_clock();
+ u8 act_cyc, rec_cyc;
- return((recovery_cycle<<4) | active_cycle);
+ act_cyc = 17 - IDE_IN(active_time * clk / 1000 + 1, 2, 17);
+ rec_cyc = 15 - IDE_IN(recovery_time * clk / 1000 + 1, 2, 15);
+
+ return (rec_cyc << 4) | act_cyc;
}
/*
Index: b/drivers/ide/pci/aec62xx.c
===================================================================
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -140,7 +140,7 @@ static void aec_set_pio_mode(ide_drive_t
static unsigned int __devinit init_chipset_aec62xx(struct pci_dev *dev, const char *name)
{
- int bus_speed = system_bus_clock();
+ int bus_speed = ide_pci_clk ? ide_pci_clk : system_bus_clock();
if (bus_speed <= 33)
pci_set_drvdata(dev, (void *) aec6xxx_33_base);
Index: b/drivers/ide/pci/alim15x3.c
===================================================================
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -294,7 +294,7 @@ static void ali_set_pio_mode(ide_drive_t
int s_time, a_time, c_time;
u8 s_clc, a_clc, r_clc;
unsigned long flags;
- int bus_speed = system_bus_clock();
+ int bus_speed = ide_pci_clk ? ide_pci_clk : system_bus_clock();
int port = hwif->channel ? 0x5c : 0x58;
int portFIFO = hwif->channel ? 0x55 : 0x54;
u8 cd_dma_fifo = 0;
Index: b/drivers/ide/pci/amd74xx.c
===================================================================
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -179,7 +179,7 @@ static unsigned int __devinit init_chips
* Determine the system bus clock.
*/
- amd_clock = system_bus_clock() * 1000;
+ amd_clock = (ide_pci_clk ? ide_pci_clk : system_bus_clock()) * 1000;
switch (amd_clock) {
case 33000: amd_clock = 33333; break;
Index: b/drivers/ide/pci/cmd640.c
===================================================================
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -552,7 +552,14 @@ static void cmd640_set_mode(ide_drive_t
{
int setup_time, active_time, recovery_time, clock_time;
u8 setup_count, active_count, recovery_count, recovery_count2, cycle_count;
- int bus_speed = system_bus_clock();
+ int bus_speed;
+
+ if (cmd640_vlb && ide_vlb_clk)
+ bus_speed = ide_vlb_clk;
+ else if (!cmd640_vlb && ide_pci_clk)
+ bus_speed = ide_pci_clk;
+ else
+ bus_speed = system_bus_clock();
if (pio_mode > 5)
pio_mode = 5;
Index: b/drivers/ide/pci/cmd64x.c
===================================================================
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -68,8 +68,8 @@ static u8 quantize_timing(int timing, in
*/
static void program_cycle_times (ide_drive_t *drive, int cycle_time, int active_time)
{
- struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
- int clock_time = 1000 / system_bus_clock();
+ struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
+ int clock_time = 1000 / (ide_pci_clk ? ide_pci_clk : system_bus_clock());
u8 cycle_count, active_count, recovery_count, drwtim;
static const u8 recovery_values[] =
{15, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0};
@@ -128,7 +128,7 @@ static void cmd64x_tune_pio(ide_drive_t
ide_pio_timings[pio].active_time);
setup_count = quantize_timing(ide_pio_timings[pio].setup_time,
- 1000 / system_bus_clock());
+ 1000 / (ide_pci_clk ? ide_pci_clk : system_bus_clock()));
/*
* The primary channel has individual address setup timing registers
Index: b/drivers/ide/pci/cy82c693.c
===================================================================
--- a/drivers/ide/pci/cy82c693.c
+++ b/drivers/ide/pci/cy82c693.c
@@ -136,7 +136,7 @@ static int calc_clk(int time, int bus_sp
static void compute_clocks(u8 pio, pio_clocks_t *p_pclk)
{
int clk1, clk2;
- int bus_speed = system_bus_clock(); /* get speed of PCI bus */
+ int bus_speed = ide_pci_clk ? ide_pci_clk : system_bus_clock();
/* we don't check against CY82C693's min and max speed,
* so you can play with the idebus=xx parameter
Index: b/drivers/ide/pci/opti621.c
===================================================================
--- a/drivers/ide/pci/opti621.c
+++ b/drivers/ide/pci/opti621.c
@@ -210,7 +210,7 @@ static void compute_clocks(int pio, pio_
{
if (pio != PIO_NOT_EXIST) {
int adr_setup, data_pls;
- int bus_speed = system_bus_clock();
+ int bus_speed = ide_pci_clk ? ide_pci_clk : system_bus_clock();
adr_setup = ide_pio_timings[pio].setup_time;
data_pls = ide_pio_timings[pio].active_time;
Index: b/drivers/ide/pci/via82cxxx.c
===================================================================
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -340,7 +340,7 @@ static unsigned int __devinit init_chips
* Determine system bus clock.
*/
- via_clock = system_bus_clock() * 1000;
+ via_clock = (ide_pci_clk ? ide_pci_clk : system_bus_clock()) * 1000;
switch (via_clock) {
case 33000: via_clock = 33333; break;
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -802,6 +802,9 @@ extern ide_hwif_t ide_hwifs[]; /* maste
#endif
extern int noautodma;
+extern int ide_vlb_clk;
+extern int ide_pci_clk;
+
ide_hwif_t *ide_find_port_slot(const struct ide_port_info *);
static inline ide_hwif_t *ide_find_port(void)
--
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