#include "piix.h"
static int no_piix_dma;
+#if defined(DISPLAY_PIIX_TIMINGS) && defined(CONFIG_PROC_FS)
+#include <linux/stat.h>
+#include <linux/proc_fs.h>
+
+static u8 piix_proc = 0;
+#define PIIX_MAX_DEVS 5
+static struct pci_dev *piix_devs[PIIX_MAX_DEVS];
+static int n_piix_devs;
+
+/**
+ * piix_get_info - fill in /proc for PIIX ide
+ * @buffer: buffer to fill
+ * @addr: address of user start in buffer
+ * @offset: offset into 'file'
+ * @count: buffer count
+ *
+ * Walks the PIIX devices and outputs summary data on the tuning and
+ * anything else that will help with debugging
+ */
+
+static int piix_get_info (char *buffer, char **addr, off_t offset, int count)
+{
+ char *p = buffer;
+ int i;
+
+ for (i = 0; i < n_piix_devs; i++) {
+ struct pci_dev *dev = piix_devs[i];
+ unsigned long bibma = pci_resource_start(dev, 4);
+ u16 reg40 = 0, psitre = 0, reg42 = 0, ssitre = 0;
+ u8 c0 = 0, c1 = 0, reg54 = 0, reg55 = 0;
+ u8 reg44 = 0, reg48 = 0, reg4a = 0, reg4b = 0;
+
+ p += sprintf(p, "\nController: %d\n", i);
+ p += sprintf(p, "\n Intel ");
+ switch(dev->device) {
+ case PCI_DEVICE_ID_INTEL_82801EB_1:
+ p += sprintf(p, "PIIX4 SATA 150 ");
+ break;
+ case PCI_DEVICE_ID_INTEL_82801BA_8:
+ case PCI_DEVICE_ID_INTEL_82801BA_9:
+ case PCI_DEVICE_ID_INTEL_82801CA_10:
+ case PCI_DEVICE_ID_INTEL_82801CA_11:
+ case PCI_DEVICE_ID_INTEL_82801DB_10:
+ case PCI_DEVICE_ID_INTEL_82801DB_11:
+ case PCI_DEVICE_ID_INTEL_82801EB_11:
+ case PCI_DEVICE_ID_INTEL_82801E_11:
+ case PCI_DEVICE_ID_INTEL_ESB_2:
+ case PCI_DEVICE_ID_INTEL_ICH6_19:
+ p += sprintf(p, "PIIX4 Ultra 100 ");
+ break;
+ case PCI_DEVICE_ID_INTEL_82372FB_1:
+ case PCI_DEVICE_ID_INTEL_82801AA_1:
+ p += sprintf(p, "PIIX4 Ultra 66 ");
+ break;
+ case PCI_DEVICE_ID_INTEL_82451NX:
+ case PCI_DEVICE_ID_INTEL_82801AB_1:
+ case PCI_DEVICE_ID_INTEL_82443MX_1:
+ case PCI_DEVICE_ID_INTEL_82371AB:
+ p += sprintf(p, "PIIX4 Ultra 33 ");
+ break;
+ case PCI_DEVICE_ID_INTEL_82371SB_1:
+ p += sprintf(p, "PIIX3 ");
+ break;
+ case PCI_DEVICE_ID_INTEL_82371MX:
+ p += sprintf(p, "MPIIX ");
+ break;
+ case PCI_DEVICE_ID_INTEL_82371FB_1:
+ case PCI_DEVICE_ID_INTEL_82371FB_0:
+ default:
+ p += sprintf(p, "PIIX ");
+ break;
+ }
+ p += sprintf(p, "Chipset.\n");
+
+ if (dev->device == PCI_DEVICE_ID_INTEL_82371MX)
+ continue;
+
+ pci_read_config_word(dev, 0x40, ®40);
+ pci_read_config_word(dev, 0x42, ®42);
+ pci_read_config_byte(dev, 0x44, ®44);
+ pci_read_config_byte(dev, 0x48, ®48);
+ pci_read_config_byte(dev, 0x4a, ®4a);
+ pci_read_config_byte(dev, 0x4b, ®4b);
+ pci_read_config_byte(dev, 0x54, ®54);
+ pci_read_config_byte(dev, 0x55, ®55);
+
+ psitre = (reg40 & 0x4000) ? 1 : 0;
+ ssitre = (reg42 & 0x4000) ? 1 : 0;
+
+ /*
+ * at that point bibma+0x2 et bibma+0xa are byte registers
+ * to investigate:
+ */
+ c0 = inb(bibma + 0x02);
+ c1 = inb(bibma + 0x0a);
+
+ p += sprintf(p, "--------------- Primary Channel "
+ "---------------- Secondary Channel "
+ "-------------\n");
+ p += sprintf(p, " %sabled "
+ " %sabled\n",
+ (c0&0x80) ? "dis" : " en",
+ (c1&0x80) ? "dis" : " en");
+ p += sprintf(p, "--------------- drive0 --------- drive1 "
+ "-------- drive0 ---------- drive1 ------\n");
+ p += sprintf(p, "DMA enabled: %s %s "
+ " %s %s\n",
+ (c0&0x20) ? "yes" : "no ",
+ (c0&0x40) ? "yes" : "no ",
+ (c1&0x20) ? "yes" : "no ",
+ (c1&0x40) ? "yes" : "no " );
+ p += sprintf(p, "UDMA enabled: %s %s "
+ " %s %s\n",
+ (reg48&0x01) ? "yes" : "no ",
+ (reg48&0x02) ? "yes" : "no ",
+ (reg48&0x04) ? "yes" : "no ",
+ (reg48&0x08) ? "yes" : "no " );
+ p += sprintf(p, "UDMA enabled: %s %s "
+ " %s %s\n",
+ ((reg54&0x11) &&
+ (reg55&0x10) && (reg4a&0x01)) ? "5" :
+ ((reg54&0x11) && (reg4a&0x02)) ? "4" :
+ ((reg54&0x11) && (reg4a&0x01)) ? "3" :
+ (reg4a&0x02) ? "2" :
+ (reg4a&0x01) ? "1" :
+ (reg4a&0x00) ? "0" : "X",
+ ((reg54&0x22) &&
+ (reg55&0x20) && (reg4a&0x10)) ? "5" :
+ ((reg54&0x22) && (reg4a&0x20)) ? "4" :
+ ((reg54&0x22) && (reg4a&0x10)) ? "3" :
+ (reg4a&0x20) ? "2" :
+ (reg4a&0x10) ? "1" :
+ (reg4a&0x00) ? "0" : "X",
+ ((reg54&0x44) &&
+ (reg55&0x40) && (reg4b&0x03)) ? "5" :
+ ((reg54&0x44) && (reg4b&0x02)) ? "4" :
+ ((reg54&0x44) && (reg4b&0x01)) ? "3" :
+ (reg4b&0x02) ? "2" :
+ (reg4b&0x01) ? "1" :
+ (reg4b&0x00) ? "0" : "X",
+ ((reg54&0x88) &&
+ (reg55&0x80) && (reg4b&0x30)) ? "5" :
+ ((reg54&0x88) && (reg4b&0x20)) ? "4" :
+ ((reg54&0x88) && (reg4b&0x10)) ? "3" :
+ (reg4b&0x20) ? "2" :
+ (reg4b&0x10) ? "1" :
+ (reg4b&0x00) ? "0" : "X");
+
+ p += sprintf(p, "UDMA\n");
+ p += sprintf(p, "DMA\n");
+ p += sprintf(p, "PIO\n");
+
+ /*
+ * FIXME.... Add configuration junk data....blah blah......
+ */
+ }
+ return p-buffer; /* => must be less than 4k! */
+}
+#endif /* defined(DISPLAY_PIIX_TIMINGS) && defined(CONFIG_PROC_FS) */
/**
* piix_ratemask - compute rate mask for PIIX IDE
case PCI_DEVICE_ID_INTEL_82801EB_11:
case PCI_DEVICE_ID_INTEL_ESB_2:
case PCI_DEVICE_ID_INTEL_ICH6_19:
- case PCI_DEVICE_ID_INTEL_ICH7_21:
mode = 3;
break;
/* UDMA 66 capable */
if ((id->capability & 1) && drive->autodma) {
- if (ide_use_dma(drive)) {
+ /* Consult the list of known "bad" drives */
+ if (__ide_dma_bad_drive(drive))
+ goto fast_ata_pio;
+
+ /**
+ * Try to turn DMA on if:
+ * - UDMA or EIDE modes are supported or
+ * - drive is a known "good" drive
+ *
+ * Checks for best mode supported are down later by
+ * piix_config_drive_for_dma() -> ide_dma_speed()
+ */
+ if ((id->field_valid & (4 | 2)) ||
+ (__ide_dma_good_drive(drive) && id->eide_dma_time < 150)) {
if (piix_config_drive_for_dma(drive))
return hwif->ide_dma_on(drive);
}
+ /* For some reason DMA wasn't turned on, so try PIO. */
goto fast_ata_pio;
} else if ((id->capability & 8) || (id->field_valid & 2)) {
case PCI_DEVICE_ID_INTEL_82801E_11:
case PCI_DEVICE_ID_INTEL_ESB_2:
case PCI_DEVICE_ID_INTEL_ICH6_19:
- case PCI_DEVICE_ID_INTEL_ICH7_21:
{
unsigned int extra = 0;
pci_read_config_dword(dev, 0x54, &extra);
break;
}
+#if defined(DISPLAY_PIIX_TIMINGS) && defined(CONFIG_PROC_FS)
+ piix_devs[n_piix_devs++] = dev;
+
+ if (!piix_proc) {
+ piix_proc = 1;
+ ide_pci_create_host_proc("piix", piix_get_info);
+ }
+#endif /* DISPLAY_PIIX_TIMINGS && CONFIG_PROC_FS */
return 0;
}
#endif
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 19},
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_19, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 20},
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 21},
{ 0, },
};
MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
git://git.onelab.eu / linux-2.6.git / blobdiff