From 5826b318aa02e81575c352ca26f00773c999795b Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sat, 5 May 2007 22:03:50 +0200 Subject: [PATCH] cmd64x: procfs code fixes/cleanups (take 2) Fix several issues with the driver's procfs output: - when testing if channel is enabled, the code looks at the "simplex" bits, not at the real enable bits -- add #define for the primary channel enable bit; - UltraDMA modes 0, 1, 3 for slave drive reported incorrectly due to using the master drive's clock cycle resolution bit. While at it, also perform the following cleanups: - don't print extra newline before the first controller's dump; - correct the chipset names (from CMDxxx to PCI-xxx) - don't read from the registers which aren't used for dump; - better align the table column sizes; - rework UltraDMA mode dump code; - remove PIO mode dump code that has never been finished; - remove the duplicate interrupt status (the MRDMODE register bits mirror those those in the CFR and ARTTIM23 registers) and fold the dump into single line; - correct the style of the ?: operators... Signed-off-by: Sergei Shtylyov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/pci/cmd64x.c | 129 +++++++++++++++++---------------------- 1 file changed, 55 insertions(+), 74 deletions(-) diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c index 63fd9294c7c..24acddfc27b 100644 --- a/drivers/ide/pci/cmd64x.c +++ b/drivers/ide/pci/cmd64x.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/cmd64x.c Version 1.45 Mar 14, 2007 + * linux/drivers/ide/pci/cmd64x.c Version 1.46 Mar 16, 2007 * * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines. * Due to massive hardware bugs, UltraDMA is only supported @@ -38,9 +38,10 @@ #define CFR 0x50 #define CFR_INTR_CH0 0x04 #define CNTRL 0x51 -#define CNTRL_DIS_RA0 0x40 -#define CNTRL_DIS_RA1 0x80 -#define CNTRL_ENA_2ND 0x08 +#define CNTRL_ENA_1ST 0x04 +#define CNTRL_ENA_2ND 0x08 +#define CNTRL_DIS_RA0 0x40 +#define CNTRL_DIS_RA1 0x80 #define CMDTIM 0x52 #define ARTTIM0 0x53 @@ -87,86 +88,67 @@ static int n_cmd_devs; static char * print_cmd64x_get_info (char *buf, struct pci_dev *dev, int index) { char *p = buf; - - u8 reg53 = 0, reg54 = 0, reg55 = 0, reg56 = 0; /* primary */ - u8 reg57 = 0, reg58 = 0, reg5b; /* secondary */ u8 reg72 = 0, reg73 = 0; /* primary */ u8 reg7a = 0, reg7b = 0; /* secondary */ - u8 reg50 = 0, reg71 = 0; /* extra */ + u8 reg50 = 1, reg51 = 1, reg57 = 0, reg71 = 0; /* extra */ + u8 rev = 0; p += sprintf(p, "\nController: %d\n", index); - p += sprintf(p, "CMD%x Chipset.\n", dev->device); + p += sprintf(p, "PCI-%x Chipset.\n", dev->device); + (void) pci_read_config_byte(dev, CFR, ®50); - (void) pci_read_config_byte(dev, ARTTIM0, ®53); - (void) pci_read_config_byte(dev, DRWTIM0, ®54); - (void) pci_read_config_byte(dev, ARTTIM1, ®55); - (void) pci_read_config_byte(dev, DRWTIM1, ®56); - (void) pci_read_config_byte(dev, ARTTIM2, ®57); - (void) pci_read_config_byte(dev, DRWTIM2, ®58); - (void) pci_read_config_byte(dev, DRWTIM3, ®5b); + (void) pci_read_config_byte(dev, CNTRL, ®51); + (void) pci_read_config_byte(dev, ARTTIM23, ®57); (void) pci_read_config_byte(dev, MRDMODE, ®71); (void) pci_read_config_byte(dev, BMIDESR0, ®72); (void) pci_read_config_byte(dev, UDIDETCR0, ®73); (void) pci_read_config_byte(dev, BMIDESR1, ®7a); (void) pci_read_config_byte(dev, UDIDETCR1, ®7b); - p += sprintf(p, "--------------- Primary Channel " - "---------------- Secondary Channel " - "-------------\n"); - p += sprintf(p, " %sabled " - " %sabled\n", - (reg72&0x80)?"dis":" en", - (reg7a&0x80)?"dis":" en"); - p += sprintf(p, "--------------- drive0 " - "--------- drive1 -------- drive0 " - "---------- drive1 ------\n"); - p += sprintf(p, "DMA enabled: %s %s" - " %s %s\n", - (reg72&0x20)?"yes":"no ", (reg72&0x40)?"yes":"no ", - (reg7a&0x20)?"yes":"no ", (reg7a&0x40)?"yes":"no "); - - p += sprintf(p, "DMA Mode: %s(%s) %s(%s)", - (reg72&0x20)?((reg73&0x01)?"UDMA":" DMA"):" PIO", - (reg72&0x20)?( - ((reg73&0x30)==0x30)?(((reg73&0x35)==0x35)?"3":"0"): - ((reg73&0x20)==0x20)?(((reg73&0x25)==0x25)?"3":"1"): - ((reg73&0x10)==0x10)?(((reg73&0x15)==0x15)?"4":"2"): - ((reg73&0x00)==0x00)?(((reg73&0x05)==0x05)?"5":"2"): - "X"):"?", - (reg72&0x40)?((reg73&0x02)?"UDMA":" DMA"):" PIO", - (reg72&0x40)?( - ((reg73&0xC0)==0xC0)?(((reg73&0xC5)==0xC5)?"3":"0"): - ((reg73&0x80)==0x80)?(((reg73&0x85)==0x85)?"3":"1"): - ((reg73&0x40)==0x40)?(((reg73&0x4A)==0x4A)?"4":"2"): - ((reg73&0x00)==0x00)?(((reg73&0x0A)==0x0A)?"5":"2"): - "X"):"?"); - p += sprintf(p, " %s(%s) %s(%s)\n", - (reg7a&0x20)?((reg7b&0x01)?"UDMA":" DMA"):" PIO", - (reg7a&0x20)?( - ((reg7b&0x30)==0x30)?(((reg7b&0x35)==0x35)?"3":"0"): - ((reg7b&0x20)==0x20)?(((reg7b&0x25)==0x25)?"3":"1"): - ((reg7b&0x10)==0x10)?(((reg7b&0x15)==0x15)?"4":"2"): - ((reg7b&0x00)==0x00)?(((reg7b&0x05)==0x05)?"5":"2"): - "X"):"?", - (reg7a&0x40)?((reg7b&0x02)?"UDMA":" DMA"):" PIO", - (reg7a&0x40)?( - ((reg7b&0xC0)==0xC0)?(((reg7b&0xC5)==0xC5)?"3":"0"): - ((reg7b&0x80)==0x80)?(((reg7b&0x85)==0x85)?"3":"1"): - ((reg7b&0x40)==0x40)?(((reg7b&0x4A)==0x4A)?"4":"2"): - ((reg7b&0x00)==0x00)?(((reg7b&0x0A)==0x0A)?"5":"2"): - "X"):"?" ); - p += sprintf(p, "PIO Mode: %s %s" - " %s %s\n", - "?", "?", "?", "?"); - p += sprintf(p, " %s %s\n", - (reg50 & CFR_INTR_CH0) ? "interrupting" : "polling ", - (reg57 & ARTTIM23_INTR_CH1) ? "interrupting" : "polling"); - p += sprintf(p, " %s %s\n", - (reg71 & MRDMODE_INTR_CH0) ? "pending" : "clear ", - (reg71 & MRDMODE_INTR_CH1) ? "pending" : "clear"); - p += sprintf(p, " %s %s\n", - (reg71 & MRDMODE_BLK_CH0) ? "blocked" : "enabled", - (reg71 & MRDMODE_BLK_CH1) ? "blocked" : "enabled"); + /* PCI0643/6 originally didn't have the primary channel enable bit */ + (void) pci_read_config_byte(dev, PCI_REVISION_ID, &rev); + if ((dev->device == PCI_DEVICE_ID_CMD_643) || + (dev->device == PCI_DEVICE_ID_CMD_646 && rev < 3)) + reg51 |= CNTRL_ENA_1ST; + + p += sprintf(p, "---------------- Primary Channel " + "---------------- Secondary Channel ------------\n"); + p += sprintf(p, " %s %s\n", + (reg51 & CNTRL_ENA_1ST) ? "enabled " : "disabled", + (reg51 & CNTRL_ENA_2ND) ? "enabled " : "disabled"); + p += sprintf(p, "---------------- drive0 --------- drive1 " + "-------- drive0 --------- drive1 ------\n"); + p += sprintf(p, "DMA enabled: %s %s" + " %s %s\n", + (reg72 & 0x20) ? "yes" : "no ", (reg72 & 0x40) ? "yes" : "no ", + (reg7a & 0x20) ? "yes" : "no ", (reg7a & 0x40) ? "yes" : "no "); + p += sprintf(p, "UltraDMA mode: %s (%c) %s (%c)", + ( reg73 & 0x01) ? " on" : "off", + ((reg73 & 0x30) == 0x30) ? ((reg73 & 0x04) ? '3' : '0') : + ((reg73 & 0x30) == 0x20) ? ((reg73 & 0x04) ? '3' : '1') : + ((reg73 & 0x30) == 0x10) ? ((reg73 & 0x04) ? '4' : '2') : + ((reg73 & 0x30) == 0x00) ? ((reg73 & 0x04) ? '5' : '2') : '?', + ( reg73 & 0x02) ? " on" : "off", + ((reg73 & 0xC0) == 0xC0) ? ((reg73 & 0x08) ? '3' : '0') : + ((reg73 & 0xC0) == 0x80) ? ((reg73 & 0x08) ? '3' : '1') : + ((reg73 & 0xC0) == 0x40) ? ((reg73 & 0x08) ? '4' : '2') : + ((reg73 & 0xC0) == 0x00) ? ((reg73 & 0x08) ? '5' : '2') : '?'); + p += sprintf(p, " %s (%c) %s (%c)\n", + ( reg7b & 0x01) ? " on" : "off", + ((reg7b & 0x30) == 0x30) ? ((reg7b & 0x04) ? '3' : '0') : + ((reg7b & 0x30) == 0x20) ? ((reg7b & 0x04) ? '3' : '1') : + ((reg7b & 0x30) == 0x10) ? ((reg7b & 0x04) ? '4' : '2') : + ((reg7b & 0x30) == 0x00) ? ((reg7b & 0x04) ? '5' : '2') : '?', + ( reg7b & 0x02) ? " on" : "off", + ((reg7b & 0xC0) == 0xC0) ? ((reg7b & 0x08) ? '3' : '0') : + ((reg7b & 0xC0) == 0x80) ? ((reg7b & 0x08) ? '3' : '1') : + ((reg7b & 0xC0) == 0x40) ? ((reg7b & 0x08) ? '4' : '2') : + ((reg7b & 0xC0) == 0x00) ? ((reg7b & 0x08) ? '5' : '2') : '?'); + p += sprintf(p, "Interrupt: %s, %s %s, %s\n", + (reg71 & MRDMODE_BLK_CH0 ) ? "blocked" : "enabled", + (reg50 & CFR_INTR_CH0 ) ? "pending" : "clear ", + (reg71 & MRDMODE_BLK_CH1 ) ? "blocked" : "enabled", + (reg57 & ARTTIM23_INTR_CH1) ? "pending" : "clear "); return (char *)p; } @@ -176,7 +158,6 @@ static int cmd64x_get_info (char *buffer, char **addr, off_t offset, int count) char *p = buffer; int i; - p += sprintf(p, "\n"); for (i = 0; i < n_cmd_devs; i++) { struct pci_dev *dev = cmd_devs[i]; p = print_cmd64x_get_info(p, dev, i); -- 2.41.0