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path: root/target/linux/generic-2.6/files-2.6.24/drivers/ssb/pci.c
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Diffstat (limited to 'target/linux/generic-2.6/files-2.6.24/drivers/ssb/pci.c')
-rw-r--r--target/linux/generic-2.6/files-2.6.24/drivers/ssb/pci.c790
1 files changed, 0 insertions, 790 deletions
diff --git a/target/linux/generic-2.6/files-2.6.24/drivers/ssb/pci.c b/target/linux/generic-2.6/files-2.6.24/drivers/ssb/pci.c
deleted file mode 100644
index b434df7504..0000000000
--- a/target/linux/generic-2.6/files-2.6.24/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;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 01:46:16 +0000