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authorGabor Juhos <juhosg@openwrt.org>2009-01-14 14:17:06 -0500
committerJohn W. Linville <linville@tuxdriver.com>2009-01-29 16:00:31 -0500
commit6baff7f9a6c571dcd9a59820e3c094f7490cb0fd (patch)
tree17345f71c943ec94cdd16826c7f5be8bc03a416d /drivers/net/wireless/ath9k
parent39c3c2f2de6bccf698bfb5b9c4f56ddf99de0dbc (diff)
ath9k: move PCI code into separate file
Now that we have converted all bus specific routines to replaceable, we can move the PCI specific codes into a separate file. Changes-licensed-under: ISC Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> Tested-by: Pavel Roskin <proski@gnu.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath9k')
-rw-r--r--drivers/net/wireless/ath9k/Makefile1
-rw-r--r--drivers/net/wireless/ath9k/core.h19
-rw-r--r--drivers/net/wireless/ath9k/main.c300
-rw-r--r--drivers/net/wireless/ath9k/pci.c287
4 files changed, 328 insertions, 279 deletions
diff --git a/drivers/net/wireless/ath9k/Makefile b/drivers/net/wireless/ath9k/Makefile
index 1209d14613ac..af3f39bbddd5 100644
--- a/drivers/net/wireless/ath9k/Makefile
+++ b/drivers/net/wireless/ath9k/Makefile
@@ -11,6 +11,7 @@ ath9k-y += hw.o \
11 xmit.o \ 11 xmit.o \
12 rc.o 12 rc.o
13 13
14ath9k-$(CONFIG_PCI) += pci.o
14ath9k-$(CONFIG_ATH9K_DEBUG) += debug.o 15ath9k-$(CONFIG_ATH9K_DEBUG) += debug.o
15 16
16obj-$(CONFIG_ATH9K) += ath9k.o 17obj-$(CONFIG_ATH9K) += ath9k.o
diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index f9fa5c64c77b..1e86a9cbe42b 100644
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -18,7 +18,7 @@
18#define CORE_H 18#define CORE_H
19 19
20#include <linux/etherdevice.h> 20#include <linux/etherdevice.h>
21#include <linux/pci.h> 21#include <linux/device.h>
22#include <net/mac80211.h> 22#include <net/mac80211.h>
23#include <linux/leds.h> 23#include <linux/leds.h>
24#include <linux/rfkill.h> 24#include <linux/rfkill.h>
@@ -767,4 +767,21 @@ static inline void ath_bus_cleanup(struct ath_softc *sc)
767 sc->bus_ops->cleanup(sc); 767 sc->bus_ops->cleanup(sc);
768} 768}
769 769
770extern struct ieee80211_ops ath9k_ops;
771
772irqreturn_t ath_isr(int irq, void *dev);
773void ath_cleanup(struct ath_softc *sc);
774int ath_attach(u16 devid, struct ath_softc *sc);
775void ath_detach(struct ath_softc *sc);
776const char *ath_mac_bb_name(u32 mac_bb_version);
777const char *ath_rf_name(u16 rf_version);
778
779#ifdef CONFIG_PCI
780int ath_pci_init(void);
781void ath_pci_exit(void);
782#else
783static inline int ath_pci_init(void) { return 0; };
784static inline void ath_pci_exit(void) {};
785#endif
786
770#endif /* CORE_H */ 787#endif /* CORE_H */
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index dd2be2644cad..6257790e49da 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -28,39 +28,6 @@ MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
28MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); 28MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
29MODULE_LICENSE("Dual BSD/GPL"); 29MODULE_LICENSE("Dual BSD/GPL");
30 30
31static struct pci_device_id ath_pci_id_table[] __devinitdata = {
32 { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */
33 { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
34 { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
35 { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
36 { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
37 { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
38 { 0 }
39};
40
41static void ath_detach(struct ath_softc *sc);
42static void ath_cleanup(struct ath_softc *sc);
43
44/* return bus cachesize in 4B word units */
45
46static void ath_pci_read_cachesize(struct ath_softc *sc, int *csz)
47{
48 u8 u8tmp;
49
50 pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE,
51 (u8 *)&u8tmp);
52 *csz = (int)u8tmp;
53
54 /*
55 * This check was put in to avoid "unplesant" consequences if
56 * the bootrom has not fully initialized all PCI devices.
57 * Sometimes the cache line size register is not set
58 */
59
60 if (*csz == 0)
61 *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */
62}
63
64static void ath_cache_conf_rate(struct ath_softc *sc, 31static void ath_cache_conf_rate(struct ath_softc *sc,
65 struct ieee80211_conf *conf) 32 struct ieee80211_conf *conf)
66{ 33{
@@ -500,7 +467,7 @@ static void ath9k_tasklet(unsigned long data)
500 ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask); 467 ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask);
501} 468}
502 469
503static irqreturn_t ath_isr(int irq, void *dev) 470irqreturn_t ath_isr(int irq, void *dev)
504{ 471{
505 struct ath_softc *sc = dev; 472 struct ath_softc *sc = dev;
506 struct ath_hal *ah = sc->sc_ah; 473 struct ath_hal *ah = sc->sc_ah;
@@ -1279,7 +1246,7 @@ static int ath_start_rfkill_poll(struct ath_softc *sc)
1279} 1246}
1280#endif /* CONFIG_RFKILL */ 1247#endif /* CONFIG_RFKILL */
1281 1248
1282static void ath_cleanup(struct ath_softc *sc) 1249void ath_cleanup(struct ath_softc *sc)
1283{ 1250{
1284 ath_detach(sc); 1251 ath_detach(sc);
1285 free_irq(sc->irq, sc); 1252 free_irq(sc->irq, sc);
@@ -1287,7 +1254,7 @@ static void ath_cleanup(struct ath_softc *sc)
1287 ieee80211_free_hw(sc->hw); 1254 ieee80211_free_hw(sc->hw);
1288} 1255}
1289 1256
1290static void ath_detach(struct ath_softc *sc) 1257void ath_detach(struct ath_softc *sc)
1291{ 1258{
1292 struct ieee80211_hw *hw = sc->hw; 1259 struct ieee80211_hw *hw = sc->hw;
1293 int i = 0; 1260 int i = 0;
@@ -1541,7 +1508,7 @@ bad:
1541 return error; 1508 return error;
1542} 1509}
1543 1510
1544static int ath_attach(u16 devid, struct ath_softc *sc) 1511int ath_attach(u16 devid, struct ath_softc *sc)
1545{ 1512{
1546 struct ieee80211_hw *hw = sc->hw; 1513 struct ieee80211_hw *hw = sc->hw;
1547 int error = 0; 1514 int error = 0;
@@ -2462,7 +2429,7 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
2462 return ret; 2429 return ret;
2463} 2430}
2464 2431
2465static struct ieee80211_ops ath9k_ops = { 2432struct ieee80211_ops ath9k_ops = {
2466 .tx = ath9k_tx, 2433 .tx = ath9k_tx,
2467 .start = ath9k_start, 2434 .start = ath9k_start,
2468 .stop = ath9k_stop, 2435 .stop = ath9k_stop,
@@ -2506,7 +2473,7 @@ static struct {
2506/* 2473/*
2507 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown. 2474 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
2508 */ 2475 */
2509static const char * 2476const char *
2510ath_mac_bb_name(u32 mac_bb_version) 2477ath_mac_bb_name(u32 mac_bb_version)
2511{ 2478{
2512 int i; 2479 int i;
@@ -2523,7 +2490,7 @@ ath_mac_bb_name(u32 mac_bb_version)
2523/* 2490/*
2524 * Return the RF name. "????" is returned if the RF is unknown. 2491 * Return the RF name. "????" is returned if the RF is unknown.
2525 */ 2492 */
2526static const char * 2493const char *
2527ath_rf_name(u16 rf_version) 2494ath_rf_name(u16 rf_version)
2528{ 2495{
2529 int i; 2496 int i;
@@ -2537,234 +2504,7 @@ ath_rf_name(u16 rf_version)
2537 return "????"; 2504 return "????";
2538} 2505}
2539 2506
2540static void ath_pci_cleanup(struct ath_softc *sc) 2507static int __init ath9k_init(void)
2541{
2542 struct pci_dev *pdev = to_pci_dev(sc->dev);
2543
2544 pci_iounmap(pdev, sc->mem);
2545 pci_release_region(pdev, 0);
2546 pci_disable_device(pdev);
2547}
2548
2549static struct ath_bus_ops ath_pci_bus_ops = {
2550 .read_cachesize = ath_pci_read_cachesize,
2551 .cleanup = ath_pci_cleanup,
2552};
2553
2554static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2555{
2556 void __iomem *mem;
2557 struct ath_softc *sc;
2558 struct ieee80211_hw *hw;
2559 u8 csz;
2560 u32 val;
2561 int ret = 0;
2562 struct ath_hal *ah;
2563
2564 if (pci_enable_device(pdev))
2565 return -EIO;
2566
2567 ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2568
2569 if (ret) {
2570 printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
2571 goto bad;
2572 }
2573
2574 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2575
2576 if (ret) {
2577 printk(KERN_ERR "ath9k: 32-bit DMA consistent "
2578 "DMA enable failed\n");
2579 goto bad;
2580 }
2581
2582 /*
2583 * Cache line size is used to size and align various
2584 * structures used to communicate with the hardware.
2585 */
2586 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
2587 if (csz == 0) {
2588 /*
2589 * Linux 2.4.18 (at least) writes the cache line size
2590 * register as a 16-bit wide register which is wrong.
2591 * We must have this setup properly for rx buffer
2592 * DMA to work so force a reasonable value here if it
2593 * comes up zero.
2594 */
2595 csz = L1_CACHE_BYTES / sizeof(u32);
2596 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
2597 }
2598 /*
2599 * The default setting of latency timer yields poor results,
2600 * set it to the value used by other systems. It may be worth
2601 * tweaking this setting more.
2602 */
2603 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
2604
2605 pci_set_master(pdev);
2606
2607 /*
2608 * Disable the RETRY_TIMEOUT register (0x41) to keep
2609 * PCI Tx retries from interfering with C3 CPU state.
2610 */
2611 pci_read_config_dword(pdev, 0x40, &val);
2612 if ((val & 0x0000ff00) != 0)
2613 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2614
2615 ret = pci_request_region(pdev, 0, "ath9k");
2616 if (ret) {
2617 dev_err(&pdev->dev, "PCI memory region reserve error\n");
2618 ret = -ENODEV;
2619 goto bad;
2620 }
2621
2622 mem = pci_iomap(pdev, 0, 0);
2623 if (!mem) {
2624 printk(KERN_ERR "PCI memory map error\n") ;
2625 ret = -EIO;
2626 goto bad1;
2627 }
2628
2629 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
2630 if (hw == NULL) {
2631 printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
2632 goto bad2;
2633 }
2634
2635 SET_IEEE80211_DEV(hw, &pdev->dev);
2636 pci_set_drvdata(pdev, hw);
2637
2638 sc = hw->priv;
2639 sc->hw = hw;
2640 sc->dev = &pdev->dev;
2641 sc->mem = mem;
2642 sc->bus_ops = &ath_pci_bus_ops;
2643
2644 if (ath_attach(id->device, sc) != 0) {
2645 ret = -ENODEV;
2646 goto bad3;
2647 }
2648
2649 /* setup interrupt service routine */
2650
2651 if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
2652 printk(KERN_ERR "%s: request_irq failed\n",
2653 wiphy_name(hw->wiphy));
2654 ret = -EIO;
2655 goto bad4;
2656 }
2657
2658 sc->irq = pdev->irq;
2659
2660 ah = sc->sc_ah;
2661 printk(KERN_INFO
2662 "%s: Atheros AR%s MAC/BB Rev:%x "
2663 "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n",
2664 wiphy_name(hw->wiphy),
2665 ath_mac_bb_name(ah->ah_macVersion),
2666 ah->ah_macRev,
2667 ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
2668 ah->ah_phyRev,
2669 (unsigned long)mem, pdev->irq);
2670
2671 return 0;
2672bad4:
2673 ath_detach(sc);
2674bad3:
2675 ieee80211_free_hw(hw);
2676bad2:
2677 pci_iounmap(pdev, mem);
2678bad1:
2679 pci_release_region(pdev, 0);
2680bad:
2681 pci_disable_device(pdev);
2682 return ret;
2683}
2684
2685static void ath_pci_remove(struct pci_dev *pdev)
2686{
2687 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2688 struct ath_softc *sc = hw->priv;
2689
2690 ath_cleanup(sc);
2691}
2692
2693#ifdef CONFIG_PM
2694
2695static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2696{
2697 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2698 struct ath_softc *sc = hw->priv;
2699
2700 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
2701
2702#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2703 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
2704 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
2705#endif
2706
2707 pci_save_state(pdev);
2708 pci_disable_device(pdev);
2709 pci_set_power_state(pdev, PCI_D3hot);
2710
2711 return 0;
2712}
2713
2714static int ath_pci_resume(struct pci_dev *pdev)
2715{
2716 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2717 struct ath_softc *sc = hw->priv;
2718 u32 val;
2719 int err;
2720
2721 err = pci_enable_device(pdev);
2722 if (err)
2723 return err;
2724 pci_restore_state(pdev);
2725 /*
2726 * Suspend/Resume resets the PCI configuration space, so we have to
2727 * re-disable the RETRY_TIMEOUT register (0x41) to keep
2728 * PCI Tx retries from interfering with C3 CPU state
2729 */
2730 pci_read_config_dword(pdev, 0x40, &val);
2731 if ((val & 0x0000ff00) != 0)
2732 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2733
2734 /* Enable LED */
2735 ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
2736 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
2737 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
2738
2739#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2740 /*
2741 * check the h/w rfkill state on resume
2742 * and start the rfkill poll timer
2743 */
2744 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
2745 queue_delayed_work(sc->hw->workqueue,
2746 &sc->rf_kill.rfkill_poll, 0);
2747#endif
2748
2749 return 0;
2750}
2751
2752#endif /* CONFIG_PM */
2753
2754MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
2755
2756static struct pci_driver ath_pci_driver = {
2757 .name = "ath9k",
2758 .id_table = ath_pci_id_table,
2759 .probe = ath_pci_probe,
2760 .remove = ath_pci_remove,
2761#ifdef CONFIG_PM
2762 .suspend = ath_pci_suspend,
2763 .resume = ath_pci_resume,
2764#endif /* CONFIG_PM */
2765};
2766
2767static int __init init_ath_pci(void)
2768{ 2508{
2769 int error; 2509 int error;
2770 2510
@@ -2776,26 +2516,30 @@ static int __init init_ath_pci(void)
2776 printk(KERN_ERR 2516 printk(KERN_ERR
2777 "Unable to register rate control algorithm: %d\n", 2517 "Unable to register rate control algorithm: %d\n",
2778 error); 2518 error);
2779 ath_rate_control_unregister(); 2519 goto err_out;
2780 return error;
2781 } 2520 }
2782 2521
2783 if (pci_register_driver(&ath_pci_driver) < 0) { 2522 error = ath_pci_init();
2523 if (error < 0) {
2784 printk(KERN_ERR 2524 printk(KERN_ERR
2785 "ath_pci: No devices found, driver not installed.\n"); 2525 "ath_pci: No devices found, driver not installed.\n");
2786 ath_rate_control_unregister(); 2526 error = -ENODEV;
2787 pci_unregister_driver(&ath_pci_driver); 2527 goto err_rate_unregister;
2788 return -ENODEV;
2789 } 2528 }
2790 2529
2791 return 0; 2530 return 0;
2531
2532 err_rate_unregister:
2533 ath_rate_control_unregister();
2534 err_out:
2535 return error;
2792} 2536}
2793module_init(init_ath_pci); 2537module_init(ath9k_init);
2794 2538
2795static void __exit exit_ath_pci(void) 2539static void __exit ath9k_exit(void)
2796{ 2540{
2541 ath_pci_exit();
2797 ath_rate_control_unregister(); 2542 ath_rate_control_unregister();
2798 pci_unregister_driver(&ath_pci_driver);
2799 printk(KERN_INFO "%s: Driver unloaded\n", dev_info); 2543 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
2800} 2544}
2801module_exit(exit_ath_pci); 2545module_exit(ath9k_exit);
diff --git a/drivers/net/wireless/ath9k/pci.c b/drivers/net/wireless/ath9k/pci.c
new file mode 100644
index 000000000000..4ff1caa9ba99
--- /dev/null
+++ b/drivers/net/wireless/ath9k/pci.c
@@ -0,0 +1,287 @@
1/*
2 * Copyright (c) 2008 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <linux/nl80211.h>
18#include <linux/pci.h>
19#include "core.h"
20#include "reg.h"
21#include "hw.h"
22
23static struct pci_device_id ath_pci_id_table[] __devinitdata = {
24 { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */
25 { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
26 { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
27 { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
28 { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
29 { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
30 { 0 }
31};
32
33/* return bus cachesize in 4B word units */
34static void ath_pci_read_cachesize(struct ath_softc *sc, int *csz)
35{
36 u8 u8tmp;
37
38 pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE,
39 (u8 *)&u8tmp);
40 *csz = (int)u8tmp;
41
42 /*
43 * This check was put in to avoid "unplesant" consequences if
44 * the bootrom has not fully initialized all PCI devices.
45 * Sometimes the cache line size register is not set
46 */
47
48 if (*csz == 0)
49 *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */
50}
51
52static void ath_pci_cleanup(struct ath_softc *sc)
53{
54 struct pci_dev *pdev = to_pci_dev(sc->dev);
55
56 pci_iounmap(pdev, sc->mem);
57 pci_release_region(pdev, 0);
58 pci_disable_device(pdev);
59}
60
61static struct ath_bus_ops ath_pci_bus_ops = {
62 .read_cachesize = ath_pci_read_cachesize,
63 .cleanup = ath_pci_cleanup,
64};
65
66static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
67{
68 void __iomem *mem;
69 struct ath_softc *sc;
70 struct ieee80211_hw *hw;
71 u8 csz;
72 u32 val;
73 int ret = 0;
74 struct ath_hal *ah;
75
76 if (pci_enable_device(pdev))
77 return -EIO;
78
79 ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
80
81 if (ret) {
82 printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
83 goto bad;
84 }
85
86 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
87
88 if (ret) {
89 printk(KERN_ERR "ath9k: 32-bit DMA consistent "
90 "DMA enable failed\n");
91 goto bad;
92 }
93
94 /*
95 * Cache line size is used to size and align various
96 * structures used to communicate with the hardware.
97 */
98 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
99 if (csz == 0) {
100 /*
101 * Linux 2.4.18 (at least) writes the cache line size
102 * register as a 16-bit wide register which is wrong.
103 * We must have this setup properly for rx buffer
104 * DMA to work so force a reasonable value here if it
105 * comes up zero.
106 */
107 csz = L1_CACHE_BYTES / sizeof(u32);
108 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
109 }
110 /*
111 * The default setting of latency timer yields poor results,
112 * set it to the value used by other systems. It may be worth
113 * tweaking this setting more.
114 */
115 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
116
117 pci_set_master(pdev);
118
119 /*
120 * Disable the RETRY_TIMEOUT register (0x41) to keep
121 * PCI Tx retries from interfering with C3 CPU state.
122 */
123 pci_read_config_dword(pdev, 0x40, &val);
124 if ((val & 0x0000ff00) != 0)
125 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
126
127 ret = pci_request_region(pdev, 0, "ath9k");
128 if (ret) {
129 dev_err(&pdev->dev, "PCI memory region reserve error\n");
130 ret = -ENODEV;
131 goto bad;
132 }
133
134 mem = pci_iomap(pdev, 0, 0);
135 if (!mem) {
136 printk(KERN_ERR "PCI memory map error\n") ;
137 ret = -EIO;
138 goto bad1;
139 }
140
141 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
142 if (hw == NULL) {
143 printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
144 goto bad2;
145 }
146
147 SET_IEEE80211_DEV(hw, &pdev->dev);
148 pci_set_drvdata(pdev, hw);
149
150 sc = hw->priv;
151 sc->hw = hw;
152 sc->dev = &pdev->dev;
153 sc->mem = mem;
154 sc->bus_ops = &ath_pci_bus_ops;
155
156 if (ath_attach(id->device, sc) != 0) {
157 ret = -ENODEV;
158 goto bad3;
159 }
160
161 /* setup interrupt service routine */
162
163 if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
164 printk(KERN_ERR "%s: request_irq failed\n",
165 wiphy_name(hw->wiphy));
166 ret = -EIO;
167 goto bad4;
168 }
169
170 sc->irq = pdev->irq;
171
172 ah = sc->sc_ah;
173 printk(KERN_INFO
174 "%s: Atheros AR%s MAC/BB Rev:%x "
175 "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n",
176 wiphy_name(hw->wiphy),
177 ath_mac_bb_name(ah->ah_macVersion),
178 ah->ah_macRev,
179 ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
180 ah->ah_phyRev,
181 (unsigned long)mem, pdev->irq);
182
183 return 0;
184bad4:
185 ath_detach(sc);
186bad3:
187 ieee80211_free_hw(hw);
188bad2:
189 pci_iounmap(pdev, mem);
190bad1:
191 pci_release_region(pdev, 0);
192bad:
193 pci_disable_device(pdev);
194 return ret;
195}
196
197static void ath_pci_remove(struct pci_dev *pdev)
198{
199 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
200 struct ath_softc *sc = hw->priv;
201
202 ath_cleanup(sc);
203}
204
205#ifdef CONFIG_PM
206
207static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
208{
209 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
210 struct ath_softc *sc = hw->priv;
211
212 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
213
214#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
215 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
216 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
217#endif
218
219 pci_save_state(pdev);
220 pci_disable_device(pdev);
221 pci_set_power_state(pdev, PCI_D3hot);
222
223 return 0;
224}
225
226static int ath_pci_resume(struct pci_dev *pdev)
227{
228 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
229 struct ath_softc *sc = hw->priv;
230 u32 val;
231 int err;
232
233 err = pci_enable_device(pdev);
234 if (err)
235 return err;
236 pci_restore_state(pdev);
237 /*
238 * Suspend/Resume resets the PCI configuration space, so we have to
239 * re-disable the RETRY_TIMEOUT register (0x41) to keep
240 * PCI Tx retries from interfering with C3 CPU state
241 */
242 pci_read_config_dword(pdev, 0x40, &val);
243 if ((val & 0x0000ff00) != 0)
244 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
245
246 /* Enable LED */
247 ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
248 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
249 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
250
251#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
252 /*
253 * check the h/w rfkill state on resume
254 * and start the rfkill poll timer
255 */
256 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
257 queue_delayed_work(sc->hw->workqueue,
258 &sc->rf_kill.rfkill_poll, 0);
259#endif
260
261 return 0;
262}
263
264#endif /* CONFIG_PM */
265
266MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
267
268static struct pci_driver ath_pci_driver = {
269 .name = "ath9k",
270 .id_table = ath_pci_id_table,
271 .probe = ath_pci_probe,
272 .remove = ath_pci_remove,
273#ifdef CONFIG_PM
274 .suspend = ath_pci_suspend,
275 .resume = ath_pci_resume,
276#endif /* CONFIG_PM */
277};
278
279int __init ath_pci_init(void)
280{
281 return pci_register_driver(&ath_pci_driver);
282}
283
284void ath_pci_exit(void)
285{
286 pci_unregister_driver(&ath_pci_driver);
287}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-17 13:16:05 -0500