diff options
author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2010-01-18 18:17:12 +0100 |
---|---|---|
committer | Jeff Garzik <jgarzik@redhat.com> | 2010-03-01 14:58:46 -0500 |
commit | 460f5318460a9a3b2562d8055b9fb1c60b768e1f (patch) | |
tree | 7043ab4339aa826e307800e062ad8c663b0a954a /drivers | |
parent | f777582f4963413320ce5fe1d1d3651a32075c07 (diff) | |
download | linux-460f5318460a9a3b2562d8055b9fb1c60b768e1f.tar.bz2 |
pata_via: store UDMA masks in via_isa_bridges table
* store UDMA masks in via_isa_bridges[] and while at it make "flags"
field to be u8 instead of u16
* convert the driver to use UDMA masks from via_isa_bridges[]
* remove no longer needed VIA_UDMA* defines
Make some minor documentation and CodingStyle fixes while at it.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/ata/pata_via.c | 204 |
1 files changed, 94 insertions, 110 deletions
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c index 82e75a1f1b95..6356377231fd 100644 --- a/drivers/ata/pata_via.c +++ b/drivers/ata/pata_via.c @@ -22,6 +22,7 @@ * VIA VT8233c - UDMA100 * VIA VT8235 - UDMA133 * VIA VT8237 - UDMA133 + * VIA VT8237A - UDMA133 * VIA VT8237S - UDMA133 * VIA VT8251 - UDMA133 * @@ -64,26 +65,15 @@ #define DRV_NAME "pata_via" #define DRV_VERSION "0.3.4" -/* - * The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx - * driver. - */ - enum { - VIA_UDMA = 0x007, - VIA_UDMA_NONE = 0x000, - VIA_UDMA_33 = 0x001, - VIA_UDMA_66 = 0x002, - VIA_UDMA_100 = 0x003, - VIA_UDMA_133 = 0x004, - VIA_BAD_PREQ = 0x010, /* Crashes if PREQ# till DDACK# set */ - VIA_BAD_CLK66 = 0x020, /* 66 MHz clock doesn't work correctly */ - VIA_SET_FIFO = 0x040, /* Needs to have FIFO split set */ - VIA_NO_UNMASK = 0x080, /* Doesn't work with IRQ unmasking on */ - VIA_BAD_ID = 0x100, /* Has wrong vendor ID (0x1107) */ - VIA_BAD_AST = 0x200, /* Don't touch Address Setup Timing */ - VIA_NO_ENABLES = 0x400, /* Has no enablebits */ - VIA_SATA_PATA = 0x800, /* SATA/PATA combined configuration */ + VIA_BAD_PREQ = 0x01, /* Crashes if PREQ# till DDACK# set */ + VIA_BAD_CLK66 = 0x02, /* 66 MHz clock doesn't work correctly */ + VIA_SET_FIFO = 0x04, /* Needs to have FIFO split set */ + VIA_NO_UNMASK = 0x08, /* Doesn't work with IRQ unmasking on */ + VIA_BAD_ID = 0x10, /* Has wrong vendor ID (0x1107) */ + VIA_BAD_AST = 0x20, /* Don't touch Address Setup Timing */ + VIA_NO_ENABLES = 0x40, /* Has no enablebits */ + VIA_SATA_PATA = 0x80, /* SATA/PATA combined configuration */ }; enum { @@ -99,40 +89,37 @@ static const struct via_isa_bridge { u16 id; u8 rev_min; u8 rev_max; - u16 flags; + u8 udma_mask; + u8 flags; } via_isa_bridges[] = { - { "vx855", PCI_DEVICE_ID_VIA_VX855, 0x00, 0x2f, - VIA_UDMA_133 | VIA_BAD_AST | VIA_SATA_PATA }, - { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, VIA_UDMA_133 | - VIA_BAD_AST | VIA_SATA_PATA }, - { "vt8261", PCI_DEVICE_ID_VIA_8261, 0x00, 0x2f, - VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST | VIA_SATA_PATA }, - { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST | VIA_NO_ENABLES }, - { "vt6415", PCI_DEVICE_ID_VIA_6415, 0x00, 0xff, VIA_UDMA_133 | VIA_BAD_AST | VIA_NO_ENABLES }, - { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, VIA_UDMA_100 }, - { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, VIA_UDMA_100 }, - { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, VIA_UDMA_100 }, - { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, VIA_UDMA_100 }, - { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, VIA_UDMA_66 }, - { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 }, - { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, VIA_UDMA_66 }, - { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 }, - { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, VIA_UDMA_33 | VIA_SET_FIFO }, - { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, VIA_UDMA_33 | VIA_SET_FIFO | VIA_BAD_PREQ }, - { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, VIA_UDMA_33 | VIA_SET_FIFO }, - { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, VIA_UDMA_33 | VIA_SET_FIFO }, - { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, VIA_UDMA_NONE | VIA_SET_FIFO }, - { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK }, - { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID }, - { "vtxxxx", PCI_DEVICE_ID_VIA_ANON, 0x00, 0x2f, - VIA_UDMA_133 | VIA_BAD_AST }, + { "vx855", PCI_DEVICE_ID_VIA_VX855, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA }, + { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA }, + { "vt8261", PCI_DEVICE_ID_VIA_8261, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, + { "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, + { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, + { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA }, + { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_NO_ENABLES }, + { "vt6415", PCI_DEVICE_ID_VIA_6415, 0x00, 0xff, ATA_UDMA6, VIA_BAD_AST | VIA_NO_ENABLES }, + { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, + { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, + { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, + { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, + { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, ATA_UDMA5, }, + { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, ATA_UDMA5, }, + { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, ATA_UDMA5, }, + { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, ATA_UDMA5, }, + { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, ATA_UDMA4, }, + { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 }, + { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, ATA_UDMA4, }, + { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 }, + { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, ATA_UDMA2, VIA_SET_FIFO }, + { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, ATA_UDMA2, VIA_SET_FIFO | VIA_BAD_PREQ }, + { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, ATA_UDMA2, VIA_SET_FIFO }, + { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, ATA_UDMA2, VIA_SET_FIFO }, + { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, 0x00, VIA_SET_FIFO }, + { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK }, + { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID }, + { "vtxxxx", PCI_DEVICE_ID_VIA_ANON, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, { NULL } }; @@ -191,10 +178,10 @@ static int via_cable_detect(struct ata_port *ap) { return ATA_CBL_SATA; /* Early chips are 40 wire */ - if ((config->flags & VIA_UDMA) < VIA_UDMA_66) + if (config->udma_mask < ATA_UDMA4) return ATA_CBL_PATA40; /* UDMA 66 chips have only drive side logic */ - else if ((config->flags & VIA_UDMA) < VIA_UDMA_100) + else if (config->udma_mask < ATA_UDMA5) return ATA_CBL_PATA_UNK; /* UDMA 100 or later */ pci_read_config_dword(pdev, 0x50, &ata66); @@ -233,7 +220,6 @@ static int via_pre_reset(struct ata_link *link, unsigned long deadline) * @ap: ATA interface * @adev: ATA device * @mode: ATA mode being programmed - * @tdiv: Clocks per PCI clock * @set_ast: Set to program address setup * @udma_type: UDMA mode/format of registers * @@ -244,17 +230,27 @@ static int via_pre_reset(struct ata_link *link, unsigned long deadline) * on the two channels. */ -static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, int mode, int tdiv, int set_ast, int udma_type) +static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, + int mode, int set_ast, int udma_type) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); struct ata_device *peer = ata_dev_pair(adev); struct ata_timing t, p; - static int via_clock = 33333; /* Bus clock in kHZ - ought to be tunable one day */ + static int via_clock = 33333; /* Bus clock in kHZ */ unsigned long T = 1000000000 / via_clock; - unsigned long UT = T/tdiv; + unsigned long UT = T; int ut; int offset = 3 - (2*ap->port_no) - adev->devno; + switch (udma_type) { + case ATA_UDMA4: + UT = T / 2; break; + case ATA_UDMA5: + UT = T / 3; break; + case ATA_UDMA6: + UT = T / 4; break; + } + /* Calculate the timing values we require */ ata_timing_compute(adev, mode, &t, T, UT); @@ -284,22 +280,20 @@ static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, int mo ((clamp_val(t.active, 1, 16) - 1) << 4) | (clamp_val(t.recover, 1, 16) - 1)); /* Load the UDMA bits according to type */ - switch(udma_type) { - default: - /* BUG() ? */ - /* fall through */ - case 33: - ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 5) - 2)) : 0x03; - break; - case 66: - ut = t.udma ? (0xe8 | (clamp_val(t.udma, 2, 9) - 2)) : 0x0f; - break; - case 100: - ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 9) - 2)) : 0x07; - break; - case 133: - ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 9) - 2)) : 0x07; - break; + switch (udma_type) { + case ATA_UDMA2: + default: + ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 5) - 2)) : 0x03; + break; + case ATA_UDMA4: + ut = t.udma ? (0xe8 | (clamp_val(t.udma, 2, 9) - 2)) : 0x0f; + break; + case ATA_UDMA5: + ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 9) - 2)) : 0x07; + break; + case ATA_UDMA6: + ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 9) - 2)) : 0x07; + break; } /* Set UDMA unless device is not UDMA capable */ @@ -325,22 +319,16 @@ static void via_set_piomode(struct ata_port *ap, struct ata_device *adev) { const struct via_isa_bridge *config = ap->host->private_data; int set_ast = (config->flags & VIA_BAD_AST) ? 0 : 1; - int mode = config->flags & VIA_UDMA; - static u8 tclock[5] = { 1, 1, 2, 3, 4 }; - static u8 udma[5] = { 0, 33, 66, 100, 133 }; - via_do_set_mode(ap, adev, adev->pio_mode, tclock[mode], set_ast, udma[mode]); + via_do_set_mode(ap, adev, adev->pio_mode, set_ast, config->udma_mask); } static void via_set_dmamode(struct ata_port *ap, struct ata_device *adev) { const struct via_isa_bridge *config = ap->host->private_data; int set_ast = (config->flags & VIA_BAD_AST) ? 0 : 1; - int mode = config->flags & VIA_UDMA; - static u8 tclock[5] = { 1, 1, 2, 3, 4 }; - static u8 udma[5] = { 0, 33, 66, 100, 133 }; - via_do_set_mode(ap, adev, adev->dma_mode, tclock[mode], set_ast, udma[mode]); + via_do_set_mode(ap, adev, adev->dma_mode, set_ast, config->udma_mask); } /** @@ -604,33 +592,29 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) via_config_fifo(pdev, config->flags); /* Clock set up */ - switch(config->flags & VIA_UDMA) { - case VIA_UDMA_NONE: - if (config->flags & VIA_NO_UNMASK) - ppi[0] = &via_mwdma_info_borked; - else - ppi[0] = &via_mwdma_info; - break; - case VIA_UDMA_33: - ppi[0] = &via_udma33_info; - break; - case VIA_UDMA_66: - ppi[0] = &via_udma66_info; - /* The 66 MHz devices require we enable the clock */ - pci_read_config_dword(pdev, 0x50, &timing); - timing |= 0x80008; - pci_write_config_dword(pdev, 0x50, timing); - break; - case VIA_UDMA_100: - ppi[0] = &via_udma100_info; - break; - case VIA_UDMA_133: - ppi[0] = &via_udma133_info; - break; - default: - WARN_ON(1); - return -ENODEV; - } + switch (config->udma_mask) { + case 0x00: + if (config->flags & VIA_NO_UNMASK) + ppi[0] = &via_mwdma_info_borked; + else + ppi[0] = &via_mwdma_info; + break; + case ATA_UDMA2: + ppi[0] = &via_udma33_info; + break; + case ATA_UDMA4: + ppi[0] = &via_udma66_info; + break; + case ATA_UDMA5: + ppi[0] = &via_udma100_info; + break; + case ATA_UDMA6: + ppi[0] = &via_udma133_info; + break; + default: + WARN_ON(1); + return -ENODEV; + } if (config->flags & VIA_BAD_CLK66) { /* Disable the 66MHz clock on problem devices */ @@ -667,7 +651,7 @@ static int via_reinit_one(struct pci_dev *pdev) via_config_fifo(pdev, config->flags); - if ((config->flags & VIA_UDMA) == VIA_UDMA_66) { + if (config->udma_mask == ATA_UDMA4) { /* The 66 MHz devices require we enable the clock */ pci_read_config_dword(pdev, 0x50, &timing); timing |= 0x80008; |