bcma: add driver for PCIe Gen 2 core

New Broadcom PCIe devices (802.11ac ones?) use Gen2 and have to be
initialized differently.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 160 insertions, 0 deletions

diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h
index 0b3bb16c705a..452286a38b2b 100644
--- a/include/linux/bcma/bcma.h
+++ b/include/linux/bcma/bcma.h
@@ -6,6 +6,7 @@
 
 #include <linux/bcma/bcma_driver_chipcommon.h>
 #include <linux/bcma/bcma_driver_pci.h>
+#include <linux/bcma/bcma_driver_pcie2.h>
 #include <linux/bcma/bcma_driver_mips.h>
 #include <linux/bcma/bcma_driver_gmac_cmn.h>
 #include <linux/ssb/ssb.h> /* SPROM sharing */
@@ -333,6 +334,7 @@ struct bcma_bus {
 
         struct bcma_drv_cc drv_cc;
         struct bcma_drv_pci drv_pci[2];
+        struct bcma_drv_pcie2 drv_pcie2;
         struct bcma_drv_mips drv_mips;
         struct bcma_drv_gmac_cmn drv_gmac_cmn;
 
diff --git a/include/linux/bcma/bcma_driver_pcie2.h b/include/linux/bcma/bcma_driver_pcie2.h
new file mode 100644
index 000000000000..5988b05781c3
--- /dev/null
+++ b/include/linux/bcma/bcma_driver_pcie2.h
@@ -0,0 +1,158 @@
+#ifndef LINUX_BCMA_DRIVER_PCIE2_H_
+#define LINUX_BCMA_DRIVER_PCIE2_H_
+
+#define BCMA_CORE_PCIE2_CLK_CONTROL             0x0000
+#define  PCIE2_CLKC_RST_OE                      0x0001 /* When set, drives PCI_RESET out to pin */
+#define  PCIE2_CLKC_RST                         0x0002 /* Value driven out to pin */
+#define  PCIE2_CLKC_SPERST                      0x0004 /* SurvivePeRst */
+#define  PCIE2_CLKC_DISABLE_L1CLK_GATING        0x0010
+#define  PCIE2_CLKC_DLYPERST                    0x0100 /* Delay PeRst to CoE Core */
+#define  PCIE2_CLKC_DISSPROMLD                  0x0200 /* DisableSpromLoadOnPerst */
+#define  PCIE2_CLKC_WAKE_MODE_L2                0x1000 /* Wake on L2 */
+#define BCMA_CORE_PCIE2_RC_PM_CONTROL           0x0004
+#define BCMA_CORE_PCIE2_RC_PM_STATUS            0x0008
+#define BCMA_CORE_PCIE2_EP_PM_CONTROL           0x000C
+#define BCMA_CORE_PCIE2_EP_PM_STATUS            0x0010
+#define BCMA_CORE_PCIE2_EP_LTR_CONTROL          0x0014
+#define BCMA_CORE_PCIE2_EP_LTR_STATUS           0x0018
+#define BCMA_CORE_PCIE2_EP_OBFF_STATUS          0x001C
+#define BCMA_CORE_PCIE2_PCIE_ERR_STATUS         0x0020
+#define BCMA_CORE_PCIE2_RC_AXI_CONFIG           0x0100
+#define BCMA_CORE_PCIE2_EP_AXI_CONFIG           0x0104
+#define BCMA_CORE_PCIE2_RXDEBUG_STATUS0         0x0108
+#define BCMA_CORE_PCIE2_RXDEBUG_CONTROL0        0x010C
+#define BCMA_CORE_PCIE2_CONFIGINDADDR           0x0120
+#define BCMA_CORE_PCIE2_CONFIGINDDATA           0x0124
+#define BCMA_CORE_PCIE2_MDIOCONTROL             0x0128
+#define BCMA_CORE_PCIE2_MDIOWRDATA              0x012C
+#define BCMA_CORE_PCIE2_MDIORDDATA              0x0130
+#define BCMA_CORE_PCIE2_DATAINTF                0x0180
+#define BCMA_CORE_PCIE2_D2H_INTRLAZY_0          0x0188
+#define BCMA_CORE_PCIE2_H2D_INTRLAZY_0          0x018c
+#define BCMA_CORE_PCIE2_H2D_INTSTAT_0           0x0190
+#define BCMA_CORE_PCIE2_H2D_INTMASK_0           0x0194
+#define BCMA_CORE_PCIE2_D2H_INTSTAT_0           0x0198
+#define BCMA_CORE_PCIE2_D2H_INTMASK_0           0x019c
+#define BCMA_CORE_PCIE2_LTR_STATE               0x01A0 /* Latency Tolerance Reporting */
+#define  PCIE2_LTR_ACTIVE                       2
+#define  PCIE2_LTR_ACTIVE_IDLE                  1
+#define  PCIE2_LTR_SLEEP                        0
+#define  PCIE2_LTR_FINAL_MASK                   0x300
+#define  PCIE2_LTR_FINAL_SHIFT                  8
+#define BCMA_CORE_PCIE2_PWR_INT_STATUS          0x01A4
+#define BCMA_CORE_PCIE2_PWR_INT_MASK            0x01A8
+#define BCMA_CORE_PCIE2_CFG_ADDR                0x01F8
+#define BCMA_CORE_PCIE2_CFG_DATA                0x01FC
+#define BCMA_CORE_PCIE2_SYS_EQ_PAGE             0x0200
+#define BCMA_CORE_PCIE2_SYS_MSI_PAGE            0x0204
+#define BCMA_CORE_PCIE2_SYS_MSI_INTREN          0x0208
+#define BCMA_CORE_PCIE2_SYS_MSI_CTRL0           0x0210
+#define BCMA_CORE_PCIE2_SYS_MSI_CTRL1           0x0214
+#define BCMA_CORE_PCIE2_SYS_MSI_CTRL2           0x0218
+#define BCMA_CORE_PCIE2_SYS_MSI_CTRL3           0x021C
+#define BCMA_CORE_PCIE2_SYS_MSI_CTRL4           0x0220
+#define BCMA_CORE_PCIE2_SYS_MSI_CTRL5           0x0224
+#define BCMA_CORE_PCIE2_SYS_EQ_HEAD0            0x0250
+#define BCMA_CORE_PCIE2_SYS_EQ_TAIL0            0x0254
+#define BCMA_CORE_PCIE2_SYS_EQ_HEAD1            0x0258
+#define BCMA_CORE_PCIE2_SYS_EQ_TAIL1            0x025C
+#define BCMA_CORE_PCIE2_SYS_EQ_HEAD2            0x0260
+#define BCMA_CORE_PCIE2_SYS_EQ_TAIL2            0x0264
+#define BCMA_CORE_PCIE2_SYS_EQ_HEAD3            0x0268
+#define BCMA_CORE_PCIE2_SYS_EQ_TAIL3            0x026C
+#define BCMA_CORE_PCIE2_SYS_EQ_HEAD4            0x0270
+#define BCMA_CORE_PCIE2_SYS_EQ_TAIL4            0x0274
+#define BCMA_CORE_PCIE2_SYS_EQ_HEAD5            0x0278
+#define BCMA_CORE_PCIE2_SYS_EQ_TAIL5            0x027C
+#define BCMA_CORE_PCIE2_SYS_RC_INTX_EN          0x0330
+#define BCMA_CORE_PCIE2_SYS_RC_INTX_CSR         0x0334
+#define BCMA_CORE_PCIE2_SYS_MSI_REQ             0x0340
+#define BCMA_CORE_PCIE2_SYS_HOST_INTR_EN        0x0344
+#define BCMA_CORE_PCIE2_SYS_HOST_INTR_CSR       0x0348
+#define BCMA_CORE_PCIE2_SYS_HOST_INTR0          0x0350
+#define BCMA_CORE_PCIE2_SYS_HOST_INTR1          0x0354
+#define BCMA_CORE_PCIE2_SYS_HOST_INTR2          0x0358
+#define BCMA_CORE_PCIE2_SYS_HOST_INTR3          0x035C
+#define BCMA_CORE_PCIE2_SYS_EP_INT_EN0          0x0360
+#define BCMA_CORE_PCIE2_SYS_EP_INT_EN1          0x0364
+#define BCMA_CORE_PCIE2_SYS_EP_INT_CSR0         0x0370
+#define BCMA_CORE_PCIE2_SYS_EP_INT_CSR1         0x0374
+#define BCMA_CORE_PCIE2_SPROM(wordoffset)       (0x0800 + ((wordoffset) * 2))
+#define BCMA_CORE_PCIE2_FUNC0_IMAP0_0           0x0C00
+#define BCMA_CORE_PCIE2_FUNC0_IMAP0_1           0x0C04
+#define BCMA_CORE_PCIE2_FUNC0_IMAP0_2           0x0C08
+#define BCMA_CORE_PCIE2_FUNC0_IMAP0_3           0x0C0C
+#define BCMA_CORE_PCIE2_FUNC0_IMAP0_4           0x0C10
+#define BCMA_CORE_PCIE2_FUNC0_IMAP0_5           0x0C14
+#define BCMA_CORE_PCIE2_FUNC0_IMAP0_6           0x0C18
+#define BCMA_CORE_PCIE2_FUNC0_IMAP0_7           0x0C1C
+#define BCMA_CORE_PCIE2_FUNC1_IMAP0_0           0x0C20
+#define BCMA_CORE_PCIE2_FUNC1_IMAP0_1           0x0C24
+#define BCMA_CORE_PCIE2_FUNC1_IMAP0_2           0x0C28
+#define BCMA_CORE_PCIE2_FUNC1_IMAP0_3           0x0C2C
+#define BCMA_CORE_PCIE2_FUNC1_IMAP0_4           0x0C30
+#define BCMA_CORE_PCIE2_FUNC1_IMAP0_5           0x0C34
+#define BCMA_CORE_PCIE2_FUNC1_IMAP0_6           0x0C38
+#define BCMA_CORE_PCIE2_FUNC1_IMAP0_7           0x0C3C
+#define BCMA_CORE_PCIE2_FUNC0_IMAP1             0x0C80
+#define BCMA_CORE_PCIE2_FUNC1_IMAP1             0x0C88
+#define BCMA_CORE_PCIE2_FUNC0_IMAP2             0x0CC0
+#define BCMA_CORE_PCIE2_FUNC1_IMAP2             0x0CC8
+#define BCMA_CORE_PCIE2_IARR0_LOWER             0x0D00
+#define BCMA_CORE_PCIE2_IARR0_UPPER             0x0D04
+#define BCMA_CORE_PCIE2_IARR1_LOWER             0x0D08
+#define BCMA_CORE_PCIE2_IARR1_UPPER             0x0D0C
+#define BCMA_CORE_PCIE2_IARR2_LOWER             0x0D10
+#define BCMA_CORE_PCIE2_IARR2_UPPER             0x0D14
+#define BCMA_CORE_PCIE2_OARR0                   0x0D20
+#define BCMA_CORE_PCIE2_OARR1                   0x0D28
+#define BCMA_CORE_PCIE2_OARR2                   0x0D30
+#define BCMA_CORE_PCIE2_OMAP0_LOWER             0x0D40
+#define BCMA_CORE_PCIE2_OMAP0_UPPER             0x0D44
+#define BCMA_CORE_PCIE2_OMAP1_LOWER             0x0D48
+#define BCMA_CORE_PCIE2_OMAP1_UPPER             0x0D4C
+#define BCMA_CORE_PCIE2_OMAP2_LOWER             0x0D50
+#define BCMA_CORE_PCIE2_OMAP2_UPPER             0x0D54
+#define BCMA_CORE_PCIE2_FUNC1_IARR1_SIZE        0x0D58
+#define BCMA_CORE_PCIE2_FUNC1_IARR2_SIZE        0x0D5C
+#define BCMA_CORE_PCIE2_MEM_CONTROL             0x0F00
+#define BCMA_CORE_PCIE2_MEM_ECC_ERRLOG0         0x0F04
+#define BCMA_CORE_PCIE2_MEM_ECC_ERRLOG1         0x0F08
+#define BCMA_CORE_PCIE2_LINK_STATUS             0x0F0C
+#define BCMA_CORE_PCIE2_STRAP_STATUS            0x0F10
+#define BCMA_CORE_PCIE2_RESET_STATUS            0x0F14
+#define BCMA_CORE_PCIE2_RESETEN_IN_LINKDOWN     0x0F18
+#define BCMA_CORE_PCIE2_MISC_INTR_EN            0x0F1C
+#define BCMA_CORE_PCIE2_TX_DEBUG_CFG            0x0F20
+#define BCMA_CORE_PCIE2_MISC_CONFIG             0x0F24
+#define BCMA_CORE_PCIE2_MISC_STATUS             0x0F28
+#define BCMA_CORE_PCIE2_INTR_EN                 0x0F30
+#define BCMA_CORE_PCIE2_INTR_CLEAR              0x0F34
+#define BCMA_CORE_PCIE2_INTR_STATUS             0x0F38
+
+/* PCIE gen2 config regs */
+#define PCIE2_INTSTATUS                         0x090
+#define PCIE2_INTMASK                           0x094
+#define PCIE2_SBMBX                             0x098
+
+#define PCIE2_PMCR_REFUP                        0x1814 /* Trefup time */
+
+#define PCIE2_CAP_DEVSTSCTRL2_OFFSET            0xD4
+#define PCIE2_CAP_DEVSTSCTRL2_LTRENAB           0x400
+#define PCIE2_PVT_REG_PM_CLK_PERIOD             0x184c
+
+struct bcma_drv_pcie2 {
+        struct bcma_device *core;
+};
+
+#define pcie2_read16(pcie2, offset)             bcma_read16((pcie2)->core, offset)
+#define pcie2_read32(pcie2, offset)             bcma_read32((pcie2)->core, offset)
+#define pcie2_write16(pcie2, offset, val)       bcma_write16((pcie2)->core, offset, val)
+#define pcie2_write32(pcie2, offset, val)       bcma_write32((pcie2)->core, offset, val)
+
+#define pcie2_set32(pcie2, offset, set)         bcma_set32((pcie2)->core, offset, set)
+#define pcie2_mask32(pcie2, offset, mask)       bcma_mask32((pcie2)->core, offset, mask)
+
+void bcma_core_pcie2_init(struct bcma_drv_pcie2 *pcie2);
+
+#endif /* LINUX_BCMA_DRIVER_PCIE2_H_ */