diff options
author | Felix Fietkau <nbd@openwrt.org> | 2008-10-18 21:43:30 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2008-10-18 21:43:30 +0000 |
commit | 1e570a9288856bcd288a80115f2233c9c785706c (patch) | |
tree | 8491af08bde47e22f96c01e6f560206b3fd02a4a /target/linux/generic-2.6/files/drivers/ssb/pci.c | |
parent | 487c622ac0c37f3cd26add56df9081ea7caf3835 (diff) | |
download | upstream-1e570a9288856bcd288a80115f2233c9c785706c.tar.gz upstream-1e570a9288856bcd288a80115f2233c9c785706c.tar.bz2 upstream-1e570a9288856bcd288a80115f2233c9c785706c.zip |
change the way ./files* and the generic kernel files are applied. ./files now applies to *ALL* kernel versions, and is copied along with ./files-* - this gets rid of quite a bit of redundancy in the extra kernel drivers.
SVN-Revision: 13010
Diffstat (limited to 'target/linux/generic-2.6/files/drivers/ssb/pci.c')
-rw-r--r-- | target/linux/generic-2.6/files/drivers/ssb/pci.c | 790 |
1 files changed, 0 insertions, 790 deletions
diff --git a/target/linux/generic-2.6/files/drivers/ssb/pci.c b/target/linux/generic-2.6/files/drivers/ssb/pci.c deleted file mode 100644 index b434df7504..0000000000 --- a/target/linux/generic-2.6/files/drivers/ssb/pci.c +++ /dev/null @@ -1,790 +0,0 @@ -/* - * Sonics Silicon Backplane PCI-Hostbus related functions. - * - * Copyright (C) 2005-2006 Michael Buesch <mb@bu3sch.de> - * Copyright (C) 2005 Martin Langer <martin-langer@gmx.de> - * Copyright (C) 2005 Stefano Brivio <st3@riseup.net> - * Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org> - * Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> - * - * Derived from the Broadcom 4400 device driver. - * Copyright (C) 2002 David S. Miller (davem@redhat.com) - * Fixed by Pekka Pietikainen (pp@ee.oulu.fi) - * Copyright (C) 2006 Broadcom Corporation. - * - * Licensed under the GNU/GPL. See COPYING for details. - */ - -#include <linux/ssb/ssb.h> -#include <linux/ssb/ssb_regs.h> -#include <linux/pci.h> -#include <linux/delay.h> - -#include "ssb_private.h" - - -/* Define the following to 1 to enable a printk on each coreswitch. */ -#define SSB_VERBOSE_PCICORESWITCH_DEBUG 0 - - -/* Lowlevel coreswitching */ -int ssb_pci_switch_coreidx(struct ssb_bus *bus, u8 coreidx) -{ - int err; - int attempts = 0; - u32 cur_core; - - while (1) { - err = pci_write_config_dword(bus->host_pci, SSB_BAR0_WIN, - (coreidx * SSB_CORE_SIZE) - + SSB_ENUM_BASE); - if (err) - goto error; - err = pci_read_config_dword(bus->host_pci, SSB_BAR0_WIN, - &cur_core); - if (err) - goto error; - cur_core = (cur_core - SSB_ENUM_BASE) - / SSB_CORE_SIZE; - if (cur_core == coreidx) - break; - - if (attempts++ > SSB_BAR0_MAX_RETRIES) - goto error; - udelay(10); - } - return 0; -error: - ssb_printk(KERN_ERR PFX "Failed to switch to core %u\n", coreidx); - return -ENODEV; -} - -int ssb_pci_switch_core(struct ssb_bus *bus, - struct ssb_device *dev) -{ - int err; - unsigned long flags; - -#if SSB_VERBOSE_PCICORESWITCH_DEBUG - ssb_printk(KERN_INFO PFX - "Switching to %s core, index %d\n", - ssb_core_name(dev->id.coreid), - dev->core_index); -#endif - - spin_lock_irqsave(&bus->bar_lock, flags); - err = ssb_pci_switch_coreidx(bus, dev->core_index); - if (!err) - bus->mapped_device = dev; - spin_unlock_irqrestore(&bus->bar_lock, flags); - - return err; -} - -/* Enable/disable the on board crystal oscillator and/or PLL. */ -int ssb_pci_xtal(struct ssb_bus *bus, u32 what, int turn_on) -{ - int err; - u32 in, out, outenable; - u16 pci_status; - - if (bus->bustype != SSB_BUSTYPE_PCI) - return 0; - - err = pci_read_config_dword(bus->host_pci, SSB_GPIO_IN, &in); - if (err) - goto err_pci; - err = pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT, &out); - if (err) - goto err_pci; - err = pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, &outenable); - if (err) - goto err_pci; - - outenable |= what; - - if (turn_on) { - /* Avoid glitching the clock if GPRS is already using it. - * We can't actually read the state of the PLLPD so we infer it - * by the value of XTAL_PU which *is* readable via gpioin. - */ - if (!(in & SSB_GPIO_XTAL)) { - if (what & SSB_GPIO_XTAL) { - /* Turn the crystal on */ - out |= SSB_GPIO_XTAL; - if (what & SSB_GPIO_PLL) - out |= SSB_GPIO_PLL; - err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out); - if (err) - goto err_pci; - err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, - outenable); - if (err) - goto err_pci; - msleep(1); - } - if (what & SSB_GPIO_PLL) { - /* Turn the PLL on */ - out &= ~SSB_GPIO_PLL; - err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out); - if (err) - goto err_pci; - msleep(5); - } - } - - err = pci_read_config_word(bus->host_pci, PCI_STATUS, &pci_status); - if (err) - goto err_pci; - pci_status &= ~PCI_STATUS_SIG_TARGET_ABORT; - err = pci_write_config_word(bus->host_pci, PCI_STATUS, pci_status); - if (err) - goto err_pci; - } else { - if (what & SSB_GPIO_XTAL) { - /* Turn the crystal off */ - out &= ~SSB_GPIO_XTAL; - } - if (what & SSB_GPIO_PLL) { - /* Turn the PLL off */ - out |= SSB_GPIO_PLL; - } - err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out); - if (err) - goto err_pci; - err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, outenable); - if (err) - goto err_pci; - } - -out: - return err; - -err_pci: - printk(KERN_ERR PFX "Error: ssb_pci_xtal() could not access PCI config space!\n"); - err = -EBUSY; - goto out; -} - -/* Get the word-offset for a SSB_SPROM_XXX define. */ -#define SPOFF(offset) (((offset) - SSB_SPROM_BASE) / sizeof(u16)) -/* Helper to extract some _offset, which is one of the SSB_SPROM_XXX defines. */ -#define SPEX(_outvar, _offset, _mask, _shift) \ - out->_outvar = ((in[SPOFF(_offset)] & (_mask)) >> (_shift)) - -static inline u8 ssb_crc8(u8 crc, u8 data) -{ - /* Polynomial: x^8 + x^7 + x^6 + x^4 + x^2 + 1 */ - static const u8 t[] = { - 0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B, - 0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21, - 0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF, - 0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5, - 0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14, - 0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E, - 0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80, - 0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA, - 0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95, - 0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF, - 0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01, - 0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B, - 0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA, - 0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0, - 0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E, - 0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34, - 0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0, - 0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A, - 0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54, - 0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E, - 0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF, - 0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5, - 0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B, - 0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61, - 0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E, - 0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74, - 0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA, - 0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0, - 0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41, - 0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B, - 0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5, - 0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F, - }; - return t[crc ^ data]; -} - -static u8 ssb_sprom_crc(const u16 *sprom, u16 size) -{ - int word; - u8 crc = 0xFF; - - for (word = 0; word < size - 1; word++) { - crc = ssb_crc8(crc, sprom[word] & 0x00FF); - crc = ssb_crc8(crc, (sprom[word] & 0xFF00) >> 8); - } - crc = ssb_crc8(crc, sprom[size - 1] & 0x00FF); - crc ^= 0xFF; - - return crc; -} - -static int sprom_check_crc(const u16 *sprom, u16 size) -{ - u8 crc; - u8 expected_crc; - u16 tmp; - - crc = ssb_sprom_crc(sprom, size); - tmp = sprom[size - 1] & SSB_SPROM_REVISION_CRC; - expected_crc = tmp >> SSB_SPROM_REVISION_CRC_SHIFT; - if (crc != expected_crc) - return -EPROTO; - - return 0; -} - -static void sprom_do_read(struct ssb_bus *bus, u16 *sprom) -{ - int i; - - for (i = 0; i < bus->sprom_size; i++) - sprom[i] = ioread16(bus->mmio + SSB_SPROM_BASE + (i * 2)); -} - -static int sprom_do_write(struct ssb_bus *bus, const u16 *sprom) -{ - struct pci_dev *pdev = bus->host_pci; - int i, err; - u32 spromctl; - u16 size = bus->sprom_size; - - ssb_printk(KERN_NOTICE PFX "Writing SPROM. Do NOT turn off the power! Please stand by...\n"); - err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl); - if (err) - goto err_ctlreg; - spromctl |= SSB_SPROMCTL_WE; - err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl); - if (err) - goto err_ctlreg; - ssb_printk(KERN_NOTICE PFX "[ 0%%"); - msleep(500); - for (i = 0; i < size; i++) { - if (i == size / 4) - ssb_printk("25%%"); - else if (i == size / 2) - ssb_printk("50%%"); - else if (i == (size * 3) / 4) - ssb_printk("75%%"); - else if (i % 2) - ssb_printk("."); - writew(sprom[i], bus->mmio + SSB_SPROM_BASE + (i * 2)); - mmiowb(); - msleep(20); - } - err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl); - if (err) - goto err_ctlreg; - spromctl &= ~SSB_SPROMCTL_WE; - err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl); - if (err) - goto err_ctlreg; - msleep(500); - ssb_printk("100%% ]\n"); - ssb_printk(KERN_NOTICE PFX "SPROM written.\n"); - - return 0; -err_ctlreg: - ssb_printk(KERN_ERR PFX "Could not access SPROM control register.\n"); - return err; -} - -static s8 r123_extract_antgain(u8 sprom_revision, const u16 *in, - u16 mask, u16 shift) -{ - u16 v; - u8 gain; - - v = in[SPOFF(SSB_SPROM1_AGAIN)]; - gain = (v & mask) >> shift; - if (gain == 0xFF) - gain = 2; /* If unset use 2dBm */ - if (sprom_revision == 1) { - /* Convert to Q5.2 */ - gain <<= 2; - } else { - /* Q5.2 Fractional part is stored in 0xC0 */ - gain = ((gain & 0xC0) >> 6) | ((gain & 0x3F) << 2); - } - - return (s8)gain; -} - -static void sprom_extract_r123(struct ssb_sprom *out, const u16 *in) -{ - int i; - u16 v; - s8 gain; - u16 loc[3]; - - if (out->revision == 3) { /* rev 3 moved MAC */ - loc[0] = SSB_SPROM3_IL0MAC; - loc[1] = SSB_SPROM3_ET0MAC; - loc[2] = SSB_SPROM3_ET1MAC; - } else { - loc[0] = SSB_SPROM1_IL0MAC; - loc[1] = SSB_SPROM1_ET0MAC; - loc[2] = SSB_SPROM1_ET1MAC; - } - for (i = 0; i < 3; i++) { - v = in[SPOFF(loc[0]) + i]; - *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v); - } - for (i = 0; i < 3; i++) { - v = in[SPOFF(loc[1]) + i]; - *(((__be16 *)out->et0mac) + i) = cpu_to_be16(v); - } - for (i = 0; i < 3; i++) { - v = in[SPOFF(loc[2]) + i]; - *(((__be16 *)out->et1mac) + i) = cpu_to_be16(v); - } - SPEX(et0phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0A, 0); - SPEX(et1phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1A, - SSB_SPROM1_ETHPHY_ET1A_SHIFT); - SPEX(et0mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0M, 14); - SPEX(et1mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1M, 15); - SPEX(board_rev, SSB_SPROM1_BINF, SSB_SPROM1_BINF_BREV, 0); - SPEX(country_code, SSB_SPROM1_BINF, SSB_SPROM1_BINF_CCODE, - SSB_SPROM1_BINF_CCODE_SHIFT); - SPEX(ant_available_a, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTA, - SSB_SPROM1_BINF_ANTA_SHIFT); - SPEX(ant_available_bg, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTBG, - SSB_SPROM1_BINF_ANTBG_SHIFT); - SPEX(pa0b0, SSB_SPROM1_PA0B0, 0xFFFF, 0); - SPEX(pa0b1, SSB_SPROM1_PA0B1, 0xFFFF, 0); - SPEX(pa0b2, SSB_SPROM1_PA0B2, 0xFFFF, 0); - SPEX(pa1b0, SSB_SPROM1_PA1B0, 0xFFFF, 0); - SPEX(pa1b1, SSB_SPROM1_PA1B1, 0xFFFF, 0); - SPEX(pa1b2, SSB_SPROM1_PA1B2, 0xFFFF, 0); - SPEX(gpio0, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P0, 0); - SPEX(gpio1, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P1, - SSB_SPROM1_GPIOA_P1_SHIFT); - SPEX(gpio2, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P2, 0); - SPEX(gpio3, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P3, - SSB_SPROM1_GPIOB_P3_SHIFT); - SPEX(maxpwr_a, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_A, - SSB_SPROM1_MAXPWR_A_SHIFT); - SPEX(maxpwr_bg, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_BG, 0); - SPEX(itssi_a, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_A, - SSB_SPROM1_ITSSI_A_SHIFT); - SPEX(itssi_bg, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_BG, 0); - SPEX(boardflags_lo, SSB_SPROM1_BFLLO, 0xFFFF, 0); - if (out->revision >= 2) - SPEX(boardflags_hi, SSB_SPROM2_BFLHI, 0xFFFF, 0); - - /* Extract the antenna gain values. */ - gain = r123_extract_antgain(out->revision, in, - SSB_SPROM1_AGAIN_BG, - SSB_SPROM1_AGAIN_BG_SHIFT); - out->antenna_gain.ghz24.a0 = gain; - out->antenna_gain.ghz24.a1 = gain; - out->antenna_gain.ghz24.a2 = gain; - out->antenna_gain.ghz24.a3 = gain; - gain = r123_extract_antgain(out->revision, in, - SSB_SPROM1_AGAIN_A, - SSB_SPROM1_AGAIN_A_SHIFT); - out->antenna_gain.ghz5.a0 = gain; - out->antenna_gain.ghz5.a1 = gain; - out->antenna_gain.ghz5.a2 = gain; - out->antenna_gain.ghz5.a3 = gain; -} - -static void sprom_extract_r4(struct ssb_sprom *out, const u16 *in) -{ - int i; - u16 v; - - /* extract the equivalent of the r1 variables */ - for (i = 0; i < 3; i++) { - v = in[SPOFF(SSB_SPROM4_IL0MAC) + i]; - *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v); - } - for (i = 0; i < 3; i++) { - v = in[SPOFF(SSB_SPROM4_ET0MAC) + i]; - *(((__be16 *)out->et0mac) + i) = cpu_to_be16(v); - } - for (i = 0; i < 3; i++) { - v = in[SPOFF(SSB_SPROM4_ET1MAC) + i]; - *(((__be16 *)out->et1mac) + i) = cpu_to_be16(v); - } - SPEX(et0phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET0A, 0); - SPEX(et1phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET1A, - SSB_SPROM4_ETHPHY_ET1A_SHIFT); - SPEX(country_code, SSB_SPROM4_CCODE, 0xFFFF, 0); - SPEX(boardflags_lo, SSB_SPROM4_BFLLO, 0xFFFF, 0); - SPEX(boardflags_hi, SSB_SPROM4_BFLHI, 0xFFFF, 0); - SPEX(ant_available_a, SSB_SPROM4_ANTAVAIL, SSB_SPROM4_ANTAVAIL_A, - SSB_SPROM4_ANTAVAIL_A_SHIFT); - SPEX(ant_available_bg, SSB_SPROM4_ANTAVAIL, SSB_SPROM4_ANTAVAIL_BG, - SSB_SPROM4_ANTAVAIL_BG_SHIFT); - SPEX(maxpwr_bg, SSB_SPROM4_MAXP_BG, SSB_SPROM4_MAXP_BG_MASK, 0); - SPEX(itssi_bg, SSB_SPROM4_MAXP_BG, SSB_SPROM4_ITSSI_BG, - SSB_SPROM4_ITSSI_BG_SHIFT); - SPEX(maxpwr_a, SSB_SPROM4_MAXP_A, SSB_SPROM4_MAXP_A_MASK, 0); - SPEX(itssi_a, SSB_SPROM4_MAXP_A, SSB_SPROM4_ITSSI_A, - SSB_SPROM4_ITSSI_A_SHIFT); - SPEX(gpio0, SSB_SPROM4_GPIOA, SSB_SPROM4_GPIOA_P0, 0); - SPEX(gpio1, SSB_SPROM4_GPIOA, SSB_SPROM4_GPIOA_P1, - SSB_SPROM4_GPIOA_P1_SHIFT); - SPEX(gpio2, SSB_SPROM4_GPIOB, SSB_SPROM4_GPIOB_P2, 0); - SPEX(gpio3, SSB_SPROM4_GPIOB, SSB_SPROM4_GPIOB_P3, - SSB_SPROM4_GPIOB_P3_SHIFT); - - /* Extract the antenna gain values. */ - SPEX(antenna_gain.ghz24.a0, SSB_SPROM4_AGAIN01, - SSB_SPROM4_AGAIN0, SSB_SPROM4_AGAIN0_SHIFT); - SPEX(antenna_gain.ghz24.a1, SSB_SPROM4_AGAIN01, - SSB_SPROM4_AGAIN1, SSB_SPROM4_AGAIN1_SHIFT); - SPEX(antenna_gain.ghz24.a2, SSB_SPROM4_AGAIN23, - SSB_SPROM4_AGAIN2, SSB_SPROM4_AGAIN2_SHIFT); - SPEX(antenna_gain.ghz24.a3, SSB_SPROM4_AGAIN23, - SSB_SPROM4_AGAIN3, SSB_SPROM4_AGAIN3_SHIFT); - memcpy(&out->antenna_gain.ghz5, &out->antenna_gain.ghz24, - sizeof(out->antenna_gain.ghz5)); - - /* TODO - get remaining rev 4 stuff needed */ -} - -static int sprom_extract(struct ssb_bus *bus, struct ssb_sprom *out, - const u16 *in, u16 size) -{ - memset(out, 0, sizeof(*out)); - - out->revision = in[size - 1] & 0x00FF; - ssb_dprintk(KERN_DEBUG PFX "SPROM revision %d detected.\n", out->revision); - if ((bus->chip_id & 0xFF00) == 0x4400) { - /* Workaround: The BCM44XX chip has a stupid revision - * number stored in the SPROM. - * Always extract r1. */ - out->revision = 1; - sprom_extract_r123(out, in); - } else if (bus->chip_id == 0x4321) { - /* the BCM4328 has a chipid == 0x4321 and a rev 4 SPROM */ - out->revision = 4; - sprom_extract_r4(out, in); - } else { - if (out->revision == 0) - goto unsupported; - if (out->revision >= 1 && out->revision <= 3) { - sprom_extract_r123(out, in); - } - if (out->revision == 4) - sprom_extract_r4(out, in); - if (out->revision >= 5) - goto unsupported; - } - - return 0; -unsupported: - ssb_printk(KERN_WARNING PFX "Unsupported SPROM revision %d " - "detected. Will extract v1\n", out->revision); - sprom_extract_r123(out, in); - return 0; -} - -static int ssb_pci_sprom_get(struct ssb_bus *bus, - struct ssb_sprom *sprom) -{ - int err = -ENOMEM; - u16 *buf; - - buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL); - if (!buf) - goto out; - bus->sprom_size = SSB_SPROMSIZE_WORDS_R123; - sprom_do_read(bus, buf); - err = sprom_check_crc(buf, bus->sprom_size); - if (err) { - /* check for rev 4 sprom - has special signature */ - if (buf[32] == 0x5372) { - kfree(buf); - buf = kcalloc(SSB_SPROMSIZE_WORDS_R4, sizeof(u16), - GFP_KERNEL); - if (!buf) - goto out; - bus->sprom_size = SSB_SPROMSIZE_WORDS_R4; - sprom_do_read(bus, buf); - err = sprom_check_crc(buf, bus->sprom_size); - } - if (err) - ssb_printk(KERN_WARNING PFX "WARNING: Invalid" - " SPROM CRC (corrupt SPROM)\n"); - } - err = sprom_extract(bus, sprom, buf, bus->sprom_size); - - kfree(buf); -out: - return err; -} - -static void ssb_pci_get_boardinfo(struct ssb_bus *bus, - struct ssb_boardinfo *bi) -{ - pci_read_config_word(bus->host_pci, PCI_SUBSYSTEM_VENDOR_ID, - &bi->vendor); - pci_read_config_word(bus->host_pci, PCI_SUBSYSTEM_ID, - &bi->type); - pci_read_config_word(bus->host_pci, PCI_REVISION_ID, - &bi->rev); -} - -int ssb_pci_get_invariants(struct ssb_bus *bus, - struct ssb_init_invariants *iv) -{ - int err; - - err = ssb_pci_sprom_get(bus, &iv->sprom); - if (err) - goto out; - ssb_pci_get_boardinfo(bus, &iv->boardinfo); - -out: - return err; -} - -#ifdef CONFIG_SSB_DEBUG -static int ssb_pci_assert_buspower(struct ssb_bus *bus) -{ - if (likely(bus->powered_up)) - return 0; - - printk(KERN_ERR PFX "FATAL ERROR: Bus powered down " - "while accessing PCI MMIO space\n"); - if (bus->power_warn_count <= 10) { - bus->power_warn_count++; - dump_stack(); - } - - return -ENODEV; -} -#else /* DEBUG */ -static inline int ssb_pci_assert_buspower(struct ssb_bus *bus) -{ - return 0; -} -#endif /* DEBUG */ - -static u16 ssb_pci_read16(struct ssb_device *dev, u16 offset) -{ - struct ssb_bus *bus = dev->bus; - - if (unlikely(ssb_pci_assert_buspower(bus))) - return 0xFFFF; - if (unlikely(bus->mapped_device != dev)) { - if (unlikely(ssb_pci_switch_core(bus, dev))) - return 0xFFFF; - } - return ioread16(bus->mmio + offset); -} - -static u32 ssb_pci_read32(struct ssb_device *dev, u16 offset) -{ - struct ssb_bus *bus = dev->bus; - - if (unlikely(ssb_pci_assert_buspower(bus))) - return 0xFFFFFFFF; - if (unlikely(bus->mapped_device != dev)) { - if (unlikely(ssb_pci_switch_core(bus, dev))) - return 0xFFFFFFFF; - } - return ioread32(bus->mmio + offset); -} - -static void ssb_pci_write16(struct ssb_device *dev, u16 offset, u16 value) -{ - struct ssb_bus *bus = dev->bus; - - if (unlikely(ssb_pci_assert_buspower(bus))) - return; - if (unlikely(bus->mapped_device != dev)) { - if (unlikely(ssb_pci_switch_core(bus, dev))) - return; - } - iowrite16(value, bus->mmio + offset); -} - -static void ssb_pci_write32(struct ssb_device *dev, u16 offset, u32 value) -{ - struct ssb_bus *bus = dev->bus; - - if (unlikely(ssb_pci_assert_buspower(bus))) - return; - if (unlikely(bus->mapped_device != dev)) { - if (unlikely(ssb_pci_switch_core(bus, dev))) - return; - } - iowrite32(value, bus->mmio + offset); -} - -/* Not "static", as it's used in main.c */ -const struct ssb_bus_ops ssb_pci_ops = { - .read16 = ssb_pci_read16, - .read32 = ssb_pci_read32, - .write16 = ssb_pci_write16, - .write32 = ssb_pci_write32, -}; - -static int sprom2hex(const u16 *sprom, char *buf, size_t buf_len, u16 size) -{ - int i, pos = 0; - - for (i = 0; i < size; i++) - pos += snprintf(buf + pos, buf_len - pos - 1, - "%04X", swab16(sprom[i]) & 0xFFFF); - pos += snprintf(buf + pos, buf_len - pos - 1, "\n"); - - return pos + 1; -} - -static int hex2sprom(u16 *sprom, const char *dump, size_t len, u16 size) -{ - char tmp[5] = { 0 }; - int cnt = 0; - unsigned long parsed; - - if (len < size * 2) - return -EINVAL; - - while (cnt < size) { - memcpy(tmp, dump, 4); - dump += 4; - parsed = simple_strtoul(tmp, NULL, 16); - sprom[cnt++] = swab16((u16)parsed); - } - - return 0; -} - -static ssize_t ssb_pci_attr_sprom_show(struct device *pcidev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev); - struct ssb_bus *bus; - u16 *sprom; - int err = -ENODEV; - ssize_t count = 0; - - bus = ssb_pci_dev_to_bus(pdev); - if (!bus) - goto out; - err = -ENOMEM; - sprom = kcalloc(bus->sprom_size, sizeof(u16), GFP_KERNEL); - if (!sprom) - goto out; - - /* Use interruptible locking, as the SPROM write might - * be holding the lock for several seconds. So allow userspace - * to cancel operation. */ - err = -ERESTARTSYS; - if (mutex_lock_interruptible(&bus->pci_sprom_mutex)) - goto out_kfree; - sprom_do_read(bus, sprom); - mutex_unlock(&bus->pci_sprom_mutex); - - count = sprom2hex(sprom, buf, PAGE_SIZE, bus->sprom_size); - err = 0; - -out_kfree: - kfree(sprom); -out: - return err ? err : count; -} - -static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev); - struct ssb_bus *bus; - u16 *sprom; - int res = 0, err = -ENODEV; - - bus = ssb_pci_dev_to_bus(pdev); - if (!bus) - goto out; - err = -ENOMEM; - sprom = kcalloc(bus->sprom_size, sizeof(u16), GFP_KERNEL); - if (!sprom) - goto out; - err = hex2sprom(sprom, buf, count, bus->sprom_size); - if (err) { - err = -EINVAL; - goto out_kfree; - } - err = sprom_check_crc(sprom, bus->sprom_size); - if (err) { - err = -EINVAL; - goto out_kfree; - } - - /* Use interruptible locking, as the SPROM write might - * be holding the lock for several seconds. So allow userspace - * to cancel operation. */ - err = -ERESTARTSYS; - if (mutex_lock_interruptible(&bus->pci_sprom_mutex)) - goto out_kfree; - err = ssb_devices_freeze(bus); - if (err == -EOPNOTSUPP) { - ssb_printk(KERN_ERR PFX "SPROM write: Could not freeze devices. " - "No suspend support. Is CONFIG_PM enabled?\n"); - goto out_unlock; - } - if (err) { - ssb_printk(KERN_ERR PFX "SPROM write: Could not freeze all devices\n"); - goto out_unlock; - } - res = sprom_do_write(bus, sprom); - err = ssb_devices_thaw(bus); - if (err) - ssb_printk(KERN_ERR PFX "SPROM write: Could not thaw all devices\n"); -out_unlock: - mutex_unlock(&bus->pci_sprom_mutex); -out_kfree: - kfree(sprom); -out: - if (res) - return res; - return err ? err : count; -} - -static DEVICE_ATTR(ssb_sprom, 0600, - ssb_pci_attr_sprom_show, - ssb_pci_attr_sprom_store); - -void ssb_pci_exit(struct ssb_bus *bus) -{ - struct pci_dev *pdev; - - if (bus->bustype != SSB_BUSTYPE_PCI) - return; - - pdev = bus->host_pci; - device_remove_file(&pdev->dev, &dev_attr_ssb_sprom); -} - -int ssb_pci_init(struct ssb_bus *bus) -{ - struct pci_dev *pdev; - int err; - - if (bus->bustype != SSB_BUSTYPE_PCI) - return 0; - - pdev = bus->host_pci; - mutex_init(&bus->pci_sprom_mutex); - err = device_create_file(&pdev->dev, &dev_attr_ssb_sprom); - if (err) - goto out; - -out: - return err; -} |