Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull powerpc fixes from Benjamin Herrenschmidt:
 "Some more P8 related bits, a bunch of fixes for our P7+/P8 HW crypto
  drivers, some added workarounds for those radeons that don't do proper
  64-bit MSIs and a couple of other trivialities by myself."

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/pseries: Make 32-bit MSI quirk work on systems lacking firmware support
  powerpc/powernv: Build a zImage.epapr
  powerpc: Make radeon 32-bit MSI quirk work on powernv
  powerpc: Context switch more PMU related SPRs
  powerpc/powernv: Fix condition for when to invalidate the TCE cache
  powerpc/pci: Fix bogus message at boot about empty memory resources
  powerpc: Fix TLB cleanup at boot on POWER8
  drivers/crypto/nx: Fixes for multiple races and issues

12 files changed, 127 insertions, 57 deletions

diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index 8b11b5bd9938..2c1d8cb9b265 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -174,6 +174,8 @@ struct pci_dn {
 /* Get the pointer to a device_node's pci_dn */
 #define PCI_DN(dn)      ((struct pci_dn *) (dn)->data)
 
+extern struct pci_dn *pci_get_pdn(struct pci_dev *pdev);
+
 extern void * update_dn_pci_info(struct device_node *dn, void *data);
 
 static inline int pci_device_from_OF_node(struct device_node *np,
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index d7e67ca8b4a6..594db6bc093c 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -284,6 +284,12 @@ struct thread_struct {
         unsigned long   ebbrr;
         unsigned long   ebbhr;
         unsigned long   bescr;
+        unsigned long   siar;
+        unsigned long   sdar;
+        unsigned long   sier;
+        unsigned long   mmcr0;
+        unsigned long   mmcr2;
+        unsigned long   mmcra;
 #endif
 };
 
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index b51a97cfedf8..6f16ffafa6f0 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -127,6 +127,12 @@ int main(void)
         DEFINE(THREAD_BESCR, offsetof(struct thread_struct, bescr));
         DEFINE(THREAD_EBBHR, offsetof(struct thread_struct, ebbhr));
         DEFINE(THREAD_EBBRR, offsetof(struct thread_struct, ebbrr));
+        DEFINE(THREAD_SIAR, offsetof(struct thread_struct, siar));
+        DEFINE(THREAD_SDAR, offsetof(struct thread_struct, sdar));
+        DEFINE(THREAD_SIER, offsetof(struct thread_struct, sier));
+        DEFINE(THREAD_MMCR0, offsetof(struct thread_struct, mmcr0));
+        DEFINE(THREAD_MMCR2, offsetof(struct thread_struct, mmcr2));
+        DEFINE(THREAD_MMCRA, offsetof(struct thread_struct, mmcra));
 #endif
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
         DEFINE(PACATMSCRATCH, offsetof(struct paca_struct, tm_scratch));
diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S
index a283b6442b26..18b5b9cf8e37 100644
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S
@@ -135,8 +135,12 @@ __init_HFSCR:
         blr
 
 __init_TLB:
-        /* Clear the TLB */
-        li      r6,128
+        /*
+         * Clear the TLB using the "IS 3" form of tlbiel instruction
+         * (invalidate by congruence class). P7 has 128 CCs, P8 has 512
+         * so we just always do 512
+         */
+        li      r6,512
         mtctr   r6
         li      r7,0xc00        /* IS field = 0b11 */
         ptesync
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 51cfb8fc301f..0e9095e47b5b 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -465,6 +465,20 @@ BEGIN_FTR_SECTION
         std     r0, THREAD_EBBHR(r3)
         mfspr   r0, SPRN_EBBRR
         std     r0, THREAD_EBBRR(r3)
+
+        /* PMU registers made user read/(write) by EBB */
+        mfspr   r0, SPRN_SIAR
+        std     r0, THREAD_SIAR(r3)
+        mfspr   r0, SPRN_SDAR
+        std     r0, THREAD_SDAR(r3)
+        mfspr   r0, SPRN_SIER
+        std     r0, THREAD_SIER(r3)
+        mfspr   r0, SPRN_MMCR0
+        std     r0, THREAD_MMCR0(r3)
+        mfspr   r0, SPRN_MMCR2
+        std     r0, THREAD_MMCR2(r3)
+        mfspr   r0, SPRN_MMCRA
+        std     r0, THREAD_MMCRA(r3)
 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
 #endif
 
@@ -560,6 +574,20 @@ BEGIN_FTR_SECTION
         ld      r0, THREAD_EBBRR(r4)
         mtspr   SPRN_EBBRR, r0
 
+        /* PMU registers made user read/(write) by EBB */
+        ld      r0, THREAD_SIAR(r4)
+        mtspr   SPRN_SIAR, r0
+        ld      r0, THREAD_SDAR(r4)
+        mtspr   SPRN_SDAR, r0
+        ld      r0, THREAD_SIER(r4)
+        mtspr   SPRN_SIER, r0
+        ld      r0, THREAD_MMCR0(r4)
+        mtspr   SPRN_MMCR0, r0
+        ld      r0, THREAD_MMCR2(r4)
+        mtspr   SPRN_MMCR2, r0
+        ld      r0, THREAD_MMCRA(r4)
+        mtspr   SPRN_MMCRA, r0
+
         ld      r0,THREAD_TAR(r4)
         mtspr   SPRN_TAR,r0
 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 6053f037ef0a..e9acf50dd5b2 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1520,9 +1520,10 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose,
         for (i = 0; i < 3; ++i) {
                 res = &hose->mem_resources[i];
                 if (!res->flags) {
-                        printk(KERN_ERR "PCI: Memory resource 0 not set for "
-                               "host bridge %s (domain %d)\n",
-                               hose->dn->full_name, hose->global_number);
+                        if (i == 0)
+                                printk(KERN_ERR "PCI: Memory resource 0 not set for "
+                                       "host bridge %s (domain %d)\n",
+                                       hose->dn->full_name, hose->global_number);
                         continue;
                 }
                 offset = hose->mem_offset[i];
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 873050d26840..2e8629654ca8 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -266,3 +266,13 @@ int pcibus_to_node(struct pci_bus *bus)
 }
 EXPORT_SYMBOL(pcibus_to_node);
 #endif
+
+static void quirk_radeon_32bit_msi(struct pci_dev *dev)
+{
+        struct pci_dn *pdn = pci_get_pdn(dev);
+
+        if (pdn)
+                pdn->force_32bit_msi = 1;
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x68f2, quirk_radeon_32bit_msi);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0xaa68, quirk_radeon_32bit_msi);
diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
index e7af165f8b9d..df038442548a 100644
--- a/arch/powerpc/kernel/pci_dn.c
+++ b/arch/powerpc/kernel/pci_dn.c
@@ -32,6 +32,14 @@
 #include <asm/ppc-pci.h>
 #include <asm/firmware.h>
 
+struct pci_dn *pci_get_pdn(struct pci_dev *pdev)
+{
+        struct device_node *dn = pci_device_to_OF_node(pdev);
+        if (!dn)
+                return NULL;
+        return PCI_DN(dn);
+}
+
 /*
  * Traverse_func that inits the PCI fields of the device node.
  * NOTE: this *must* be done before read/write config to the device.
diff --git a/arch/powerpc/platforms/powernv/Kconfig b/arch/powerpc/platforms/powernv/Kconfig
index d3e840d643af..c24684c818ab 100644
--- a/arch/powerpc/platforms/powernv/Kconfig
+++ b/arch/powerpc/platforms/powernv/Kconfig
@@ -6,6 +6,7 @@ config PPC_POWERNV
         select PPC_ICP_NATIVE
         select PPC_P7_NAP
         select PPC_PCI_CHOICE if EMBEDDED
+        select EPAPR_BOOT
         default y
 
 config POWERNV_MSI
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 3937aaae5bc4..9c9d15e4cdf2 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -68,16 +68,6 @@ define_pe_printk_level(pe_err, KERN_ERR);
 define_pe_printk_level(pe_warn, KERN_WARNING);
 define_pe_printk_level(pe_info, KERN_INFO);
 
-static struct pci_dn *pnv_ioda_get_pdn(struct pci_dev *dev)
-{
-        struct device_node *np;
-
-        np = pci_device_to_OF_node(dev);
-        if (!np)
-                return NULL;
-        return PCI_DN(np);
-}
-
 static int pnv_ioda_alloc_pe(struct pnv_phb *phb)
 {
         unsigned long pe;
@@ -110,7 +100,7 @@ static struct pnv_ioda_pe *pnv_ioda_get_pe(struct pci_dev *dev)
 {
         struct pci_controller *hose = pci_bus_to_host(dev->bus);
         struct pnv_phb *phb = hose->private_data;
-        struct pci_dn *pdn = pnv_ioda_get_pdn(dev);
+        struct pci_dn *pdn = pci_get_pdn(dev);
 
         if (!pdn)
                 return NULL;
@@ -173,7 +163,7 @@ static int pnv_ioda_configure_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe)
 
         /* Add to all parents PELT-V */
         while (parent) {
-                struct pci_dn *pdn = pnv_ioda_get_pdn(parent);
+                struct pci_dn *pdn = pci_get_pdn(parent);
                 if (pdn && pdn->pe_number != IODA_INVALID_PE) {
                         rc = opal_pci_set_peltv(phb->opal_id, pdn->pe_number,
                                                 pe->pe_number, OPAL_ADD_PE_TO_DOMAIN);
@@ -252,7 +242,7 @@ static struct pnv_ioda_pe *pnv_ioda_setup_dev_PE(struct pci_dev *dev)
 {
         struct pci_controller *hose = pci_bus_to_host(dev->bus);
         struct pnv_phb *phb = hose->private_data;
-        struct pci_dn *pdn = pnv_ioda_get_pdn(dev);
+        struct pci_dn *pdn = pci_get_pdn(dev);
         struct pnv_ioda_pe *pe;
         int pe_num;
 
@@ -323,7 +313,7 @@ static void pnv_ioda_setup_same_PE(struct pci_bus *bus, struct pnv_ioda_pe *pe)
         struct pci_dev *dev;
 
         list_for_each_entry(dev, &bus->devices, bus_list) {
-                struct pci_dn *pdn = pnv_ioda_get_pdn(dev);
+                struct pci_dn *pdn = pci_get_pdn(dev);
 
                 if (pdn == NULL) {
                         pr_warn("%s: No device node associated with device !\n",
@@ -436,7 +426,7 @@ static void pnv_pci_ioda_setup_PEs(void)
 
 static void pnv_pci_ioda_dma_dev_setup(struct pnv_phb *phb, struct pci_dev *pdev)
 {
-        struct pci_dn *pdn = pnv_ioda_get_pdn(pdev);
+        struct pci_dn *pdn = pci_get_pdn(pdev);
         struct pnv_ioda_pe *pe;
 
         /*
@@ -768,6 +758,7 @@ static int pnv_pci_ioda_msi_setup(struct pnv_phb *phb, struct pci_dev *dev,
                                   unsigned int is_64, struct msi_msg *msg)
 {
         struct pnv_ioda_pe *pe = pnv_ioda_get_pe(dev);
+        struct pci_dn *pdn = pci_get_pdn(dev);
         struct irq_data *idata;
         struct irq_chip *ichip;
         unsigned int xive_num = hwirq - phb->msi_base;
@@ -783,6 +774,10 @@ static int pnv_pci_ioda_msi_setup(struct pnv_phb *phb, struct pci_dev *dev,
         if (pe->mve_number < 0)
                 return -ENXIO;
 
+        /* Force 32-bit MSI on some broken devices */
+        if (pdn && pdn->force_32bit_msi)
+                is_64 = 0;
+
         /* Assign XIVE to PE */
         rc = opal_pci_set_xive_pe(phb->opal_id, pe->pe_number, xive_num);
         if (rc) {
@@ -1035,7 +1030,7 @@ static int pnv_pci_enable_device_hook(struct pci_dev *dev)
         if (!phb->initialized)
                 return 0;
 
-        pdn = pnv_ioda_get_pdn(dev);
+        pdn = pci_get_pdn(dev);
         if (!pdn || pdn->pe_number == IODA_INVALID_PE)
                 return -EINVAL;
 
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index 163bd7422f1c..277343cc6a3d 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -47,6 +47,10 @@ static int pnv_msi_check_device(struct pci_dev* pdev, int nvec, int type)
 {
         struct pci_controller *hose = pci_bus_to_host(pdev->bus);
         struct pnv_phb *phb = hose->private_data;
+        struct pci_dn *pdn = pci_get_pdn(pdev);
+
+        if (pdn && pdn->force_32bit_msi && !phb->msi32_support)
+                return -ENODEV;
 
         return (phb && phb->msi_bmp.bitmap) ? 0 : -ENODEV;
 }
@@ -367,7 +371,7 @@ static void pnv_tce_free(struct iommu_table *tbl, long index, long npages)
         while (npages--)
                 *(tcep++) = 0;
 
-        if (tbl->it_type & TCE_PCI_SWINV_CREATE)
+        if (tbl->it_type & TCE_PCI_SWINV_FREE)
                 pnv_pci_ioda_tce_invalidate(tbl, tces, tcep - 1);
 }
 
diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index 420524e6f8c9..6d2f0abce6fa 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -26,26 +26,6 @@ static int query_token, change_token;
 #define RTAS_CHANGE_MSIX_FN     4
 #define RTAS_CHANGE_32MSI_FN    5
 
-static struct pci_dn *get_pdn(struct pci_dev *pdev)
-{
-        struct device_node *dn;
-        struct pci_dn *pdn;
-
-        dn = pci_device_to_OF_node(pdev);
-        if (!dn) {
-                dev_dbg(&pdev->dev, "rtas_msi: No OF device node\n");
-                return NULL;
-        }
-
-        pdn = PCI_DN(dn);
-        if (!pdn) {
-                dev_dbg(&pdev->dev, "rtas_msi: No PCI DN\n");
-                return NULL;
-        }
-
-        return pdn;
-}
-
 /* RTAS Helpers */
 
 static int rtas_change_msi(struct pci_dn *pdn, u32 func, u32 num_irqs)
@@ -91,7 +71,7 @@ static void rtas_disable_msi(struct pci_dev *pdev)
 {
         struct pci_dn *pdn;
 
-        pdn = get_pdn(pdev);
+        pdn = pci_get_pdn(pdev);
         if (!pdn)
                 return;
 
@@ -152,7 +132,7 @@ static int check_req(struct pci_dev *pdev, int nvec, char *prop_name)
         struct pci_dn *pdn;
         const u32 *req_msi;
 
-        pdn = get_pdn(pdev);
+        pdn = pci_get_pdn(pdev);
         if (!pdn)
                 return -ENODEV;
 
@@ -394,6 +374,23 @@ static int check_msix_entries(struct pci_dev *pdev)
         return 0;
 }
 
+static void rtas_hack_32bit_msi_gen2(struct pci_dev *pdev)
+{
+        u32 addr_hi, addr_lo;
+
+        /*
+         * We should only get in here for IODA1 configs. This is based on the
+         * fact that we using RTAS for MSIs, we don't have the 32 bit MSI RTAS
+         * support, and we are in a PCIe Gen2 slot.
+         */
+        dev_info(&pdev->dev,
+                 "rtas_msi: No 32 bit MSI firmware support, forcing 32 bit MSI\n");
+        pci_read_config_dword(pdev, pdev->msi_cap + PCI_MSI_ADDRESS_HI, &addr_hi);
+        addr_lo = 0xffff0000 | ((addr_hi >> (48 - 32)) << 4);
+        pci_write_config_dword(pdev, pdev->msi_cap + PCI_MSI_ADDRESS_LO, addr_lo);
+        pci_write_config_dword(pdev, pdev->msi_cap + PCI_MSI_ADDRESS_HI, 0);
+}
+
 static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec_in, int type)
 {
         struct pci_dn *pdn;
@@ -401,8 +398,9 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec_in, int type)
         struct msi_desc *entry;
         struct msi_msg msg;
         int nvec = nvec_in;
+        int use_32bit_msi_hack = 0;
 
-        pdn = get_pdn(pdev);
+        pdn = pci_get_pdn(pdev);
         if (!pdn)
                 return -ENODEV;
 
@@ -428,15 +426,31 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec_in, int type)
          */
 again:
         if (type == PCI_CAP_ID_MSI) {
-                if (pdn->force_32bit_msi)
+                if (pdn->force_32bit_msi) {
                         rc = rtas_change_msi(pdn, RTAS_CHANGE_32MSI_FN, nvec);
-                else
+                        if (rc < 0) {
+                                /*
+                                 * We only want to run the 32 bit MSI hack below if
+                                 * the max bus speed is Gen2 speed
+                                 */
+                                if (pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT)
+                                        return rc;
+
+                                use_32bit_msi_hack = 1;
+                        }
+                } else
+                        rc = -1;
+
+                if (rc < 0)
                         rc = rtas_change_msi(pdn, RTAS_CHANGE_MSI_FN, nvec);
 
-                if (rc < 0 && !pdn->force_32bit_msi) {
+                if (rc < 0) {
                         pr_debug("rtas_msi: trying the old firmware call.\n");
                         rc = rtas_change_msi(pdn, RTAS_CHANGE_FN, nvec);
                 }
+
+                if (use_32bit_msi_hack && rc > 0)
+                        rtas_hack_32bit_msi_gen2(pdev);
         } else
                 rc = rtas_change_msi(pdn, RTAS_CHANGE_MSIX_FN, nvec);
 
@@ -518,12 +532,3 @@ static int rtas_msi_init(void)
 }
 arch_initcall(rtas_msi_init);
 
-static void quirk_radeon(struct pci_dev *dev)
-{
-        struct pci_dn *pdn = get_pdn(dev);
-
-        if (pdn)
-                pdn->force_32bit_msi = 1;
-}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x68f2, quirk_radeon);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0xaa68, quirk_radeon);